’06–’07
Limit Switches
Limit Switches ’06–’07
Please contact ..........
Matsushita Electric Works, Ltd.
Automation Controls Business Unit
Head Office: 1048, Kadoma, Kadoma-shi, Osaka 571-8686, Japan
Telephone: +81-6-6908-1050
Facsimile: +81-6-6908-5781
http://www.nais-e.com/
All Rights Reserved © 2006 COPYRIGHT Matsushita Electric Works, Ltd.
ARCT1B272E 200609-1YT
Specifications are subject to change without notice.
Matsushita Electric Works, Ltd.
These materials are printed on ECF pulp.
These materials are printed with earth-friendly vegetable-based (soybean oil) ink.
Limit Switches
ARCT1B272E ’06.9
Printed in Japan.
Matsushita Electric Works, Ltd.
COMPACT SIZE
LIMIT SWITCHES
VL (AZ8) Mini
Limit Switches
A compact and accurate vertical limit switch. Type with a lamp which makes maintenance convenient; either a neon AC powered lamp or an LED DC powered lamp.
The cable can either be screwed in
directly, or can use U-shaped and circular pressure terminals.
Inner construction
Cover
attachment screw
Cable
Cover
Terminal screw
Cord vent
Body
Standard type
With lamps
(Roller arm)
RoHS Directive compatibility information
http://www.nais-e.com/
Operating lamp
4. Mounting are possible to both front
and back
Inoperability lamp
(with shipping)
<Front>
M4 attachment nut
1. Compact design approximately 1/3
of the AZ5 limit switches
M4 attachment bolt
Approx. 1/3
Spring washer
r
<Back>
VL
2. Au-clad contacts that can even use
low level circuit and little chattering
and bouncing
The built-in switch has Au-clad contacts
with excellent contact reliability and uses
a crossbar contact method, and moreover, has a dual cutoff circuit (1 Form A
1 Form B contact) with little chattering
and bouncing due to computer-operated
analysis.
3. Easy wiring with full-open terminals
When the cover is removed, the terminals are open as far as the flank, so the
necessity to insert your fingers into a
case to complete the wiring has been
removed. Moreover, the wiring space is
large despite the compact size, and the
terminals are spread in a tiered array, so
that wiring work can be completed very
easily.
52
Construction permits lamp attachment method to be changed.
Head block
FEATURES
AZ5 type
6. Lamp connection can be either
spring type or lead wire type
• Spring type (wiring unnecessary)
(With neon or LED lamp type)
Wiring is unnecessary because the lamp
is directly connected to the terminals. By
simply changing the direction of the lamp
holder attachment, it is possible to display both lights during inoperability and
during operation (however, if both N.O.
and N.C. loads are connected, only the
inoperability lamp can be displayed.)
M5 attachment bolt
Spring washer
5. Type with a lamp that can be used
with a wide range of voltages
• With neon lamp
Compatible with: 100 and 200V AC ;
Even at 100V AC, sufficient luminosity is
achieved through the diamond-cut lens.
Also with a long lifespan of more than 20
thousand hours.
• With LED lamp
Covers 6 to 48V DC and comes in three
types, 6V DC , 12V DC , 24 to 48V DC
Uses two highly luminescent LEDs and
in addition, sufficient luminosity is
achieved through the diamond-cut lens.
• Lead wiring type <Current leakage: 0>
(LED lamp type only)
Because the wiring can be made parallel
to the load, current leakage from the
lamp can be reduced to 0. Even with a
slight leak, the electronic circuit incurring
the leak can be used safely.
7. Dust-proof, waterproof, oil resistant
construction
The main unit and the cover are sealed
with rubber packing, and the cord runner
is doubly sealed by the cord vent. The
actuator is sealed by both a rubber cap
and an O ring in all models. Also, the
lens and cover are formed simultaneously with the lamp type, and moreover, a
nameplate is affixed to the upper surface, thereby improving the already
excellent waterproof capabilities.
(Note: Applications directly involving the
cord entrance and the locations which
are always wet and oily, or submersion
in water or oil, cannot be used.)
TYPICAL APPLICATIONS
Ideal for general plant facilities such as
engineering machinery, conveyer
machinery, and assembly lines
LED lamp type is also compatible with
low-voltage DC control circuits such as in
PCs and computers.
VL (AZ8)
PRODUCT TYPE
1. Standard type
Actuator
Part No.
AZ8111
AZ8112
AZ8122
AZ8104
AZ8108
AZ8107
AZ8166
AZ8169
Push plunger
Roller plunger
Cross roller plunger
Roller arm
Adjustable roller arm
Adjustable rod
Flexible rod
Spring wire
Note) When ordering an overseas-specified product,refer to the “FOREIGN STANDARDS” given below.
2. With neon lamp
Lamp connection
Spring type
Actuator
Push plunger
Roller plunger
Cross roller plunger
Roller arm
Adjustable roller arm
Adjustable rod
Flexible rod
Spring wire
Lamp rating
Part No.
AZ811106
AZ811206
AZ812206
AZ810406
AZ810806
AZ810706
AZ816606
AZ816906
100 to 200V AC
Note) When ordering an overseas-specified product,refer to the “FOREIGN STANDARDS” given below.
3. With LED
Lamp rating
Lamp connection
Actuator
12V DC
24 to 48V DC
Part No.
Spring type
Lead wire type
Push plunger
Roller plunger
Cross roller plunger
Roller arm
Adjustable roller arm
Adjustable rod
Flexible rod
Spring wire
Push plunger
Roller plunger
Cross roller plunger
Roller arm
Adjustable roller arm
Adjustable rod
Flexible rod
Spring wire
AZ8111161
AZ8112161
AZ8122161
AZ8104161
AZ8108161
AZ8107161
AZ8166161
AZ8169161
AZ8111661
AZ81122661
AZ8122661
AZ8104661
AZ8108661
AZ8107661
AZ8166661
AZ8169661
AZ811116
AZ811216
AZ812216
AZ810416
AZ810816
AZ810716
AZ816616
AZ816916
AZ811166
AZ811266
AZ812266
AZ810466
AZ810866
AZ810766
AZ816666
AZ816966
Notes) 1. LED rating 6V DC type is available. When ordering, add suffix 162(spring type) or 662(lead wire type) to the standard part No.
2.The 24 to 48V DC rated lamp is recommended for PC input use.
3. The roller arm and adjustable roller arm are available with metal rollers on a custom-made basis. Please inquire.
4. Option
VL limit conduit adapter
Application
VL, VL with lamp, VL-T
Part No.
AZ8801
FOREIGN STANDARDS
Standard
UL
C-UL
TÜV
Applicable product
: E122222
: 5A 250V AC
Pilot duty B300
Product type : Standard model, with neon lamp
Part No.
File No.
Ratings
File No.
Ratings
: E122222
: 5A 250V AC
Pilot duty B300
Product type : Standard model, with neon lamp
File No.
: J9551203
Ratings
: AC-15 2A/250V~
Product type : Standard model only
Order by standard part No. However,
add “9” to the end of the part No. for the
model with neon lamp.
Order by standard part No.
53
VL (AZ8)
SPECIFICATIONS
1. Rating
1) Standard type
2) Types with neon lamp and with LED
Load
Rated control voltage
Resistive load
(cos φ]1)
Inductive load
(cos φ]0.4)
5A
5A
0.4A
3A
2A
0.1A
125V AC
250V AC
125V DC
Types
Rated control
voltage
Resistive load
(cos φ]1)
Inductive load
(cos φ]0.4)
125V AC
240V AC
24V DC
5A
5A
3A
3A
2A
–
With Neon lamp
With LED
2. Characteristics
Contact arrangement
Initial contact resistance, max.
Contact material
Initial insulation resistance (At 500V DC)
Initial breakdown voltage
In the free position
In the full operating position
Shock resistance max.
Vibration resistance
Mechanical
Electrical
Life of lamp
Expected life (Min. operations)
Ambient temperature/Ambient humidity
Max. operating speed
1 Form A 1 Form B
15mΩ (By voltage drop 6 to 8V DC at rated current)
Gold clad silver alloy (cadmium free)
Min. 100MΩ
1,000Vrms for 1 min Between non-consecutive terminals 2,000Vrms for 1 min Between
dead metal parts and each terminal 2,000Vrms for 1 min Between ground and each terminal
Max. 98m/s2 {10G}
Max. 294m/s2{30G}
Standard type: Max. 55Hz Type with indicator: 10 to 50Hz, double amplitude of 1.5mm
107 (at 120 cpm)
3105 (at rated resistive load) 5106 (Magnetic contactor FC-100 200V AC load)
Min. 2104 hours (Neon lamp type)
–20 to +60°C –4 to +140°F/Max. 95%
120 cpm
3. EN60947-5-1 performance
Item
Rated insulation voltage (Ui)
Rated impulse withstand voltage (Uimp)
Switching overvoltage
Rated enclosed thermal current (Ithe)
Conditional short-circuit current
Short-circuit protection device
Protective construction
Pollution degree
Rating
250VAC
2.5kV
2.5kV
5A
100A
10A fuse
IP64
3
4. Operating characteristics
Characteristics
O.F. (N {gf}) max.
Actuator
Push plunger
Roller plunger
8.83 {900}
Cross roller plunger
Roller arm
5.88 {600}
Adjustable roller arm
7.84 {800}~3.35 {342}
Adjustable rod
7.84 {800}~1.99 {203}
Flexible rod spring wire
0.88 {90}
R.F. (N {gf}) min.
Pretravel (P.T.), max. Movement Differential Overtravel (O.T.), min. Totaltravel (T.T.), min.
mm inch
(M.D.), max. mm inch
mm inch
mm inch
1.47 {150}
1.5 .059
0.7 .028
4 .028
5.5 .217
0.49 {50}
0.49 {50}~0.21 {21}
0.49 {50}~0.12 {12}
–
20°
20°
20°
30 (1.181)
10°
10°
10°
–
75°
75°
75°
20 (.787)
95°
95°
95°
50 (1.969)
*Characteristics measured at bent condition: min. radius 100mm 3.937inch.
Notes) 1. Keep the total travel values in the specified range. Otherwise the actuator force may rise to several times the operating force, resulting in a mechanical failure or much shorter service life.
2. For the operating characteristics, refer to the TECHNICAL INFORMATION.
5. Protective construction
Protective construction
IEC
IP60
IP64
6.Lamp rating
VL Mini limit switch
VL Mini limit switch
(with lamp)
Types
Rated operating voltage Operating voltage range
Neon lamp
100 to 200V AC
80 to 240V AC
6V DC
5 to 15V DC
LED
12V DC
9 to 28V DC
24 to 48V DC
20 to 55V DC
DATA
WIRING DIAGRAM
1. Life curve
Life curve, resistive load
(AC 240VC cos φ =1)
400
300
200
100
30
5
Load current, A
Output circuit
13
VL
14
N.O.
500
0
54
2. Actual load life curve (relay coil load)
No. of operating, million times
No. of operating, million times
1000
Internal resister
120kΩ
2.4kΩ
4.7kΩ
15kΩ
1000
N.O.
11
N.C.
500
0
12
N.C.
Terminal
0.5 1.0
NK HC
50
3 5
HP HG VC-20 FC-10
Various relay loads (VA)
13
14
11
12
260 700
FC-35 FC-100
10
Note: The FC magnetic contactor series is 200V AC. The NK
is 2 Form C 24V DC type.
VL (AZ8)
DIMENSIONS
Push plunger
Standard type
AZ8111
7 .276 dia.
stainless steel plunger
PT 1.5max
10.2
.402
3
.118
mm inch
10.2
.402
General
tolerance:
±0.4 ±.016
+0.2
2-4.1 0 dia.
mounting holes
4
.157
26.5
1.043
M36
cover screw
4
.157
2-M5 (P=0.8) tapped
7 .276 in depth
mounting holes
20.4±0.3
.803±.012
56±0.3
2.205±.012
2-M5 (P=0.8)
7 .276 in depth
mounting holes
64
2.520
64
2.520
Operation indicator
2-M5 (P=0.8)
mounting holes
2-M5 (P=0.8) tapped
mounting holes
2-M323
cover screw
14
.551
14
.551
21±0.2
.827±.008
28
1.102
7.5±0.2
.295±.008
15.1
.594
25
.984
15.1
.594
30.3
1.193
7.5±0.2
.295±.008
20.4±0.3
.803±.012
Standard type
Roller plunger
Standard type
AZ8112
12.5 dia.3.8
stainless steel roller
PT 1.5max
With lamp
10.2
.402
General
tolerance:
±0.4 ±.016
10.2
.402
14.8
.583
38
1.496
+0.2
0
dia.
2-4.1
mounting holes
4
.157
4
.157
M36
cover screw
2-M5 (P=0.8) tapped
7 .276 in depth
mounting holes
20.4±0.3
.803±.012
64
2.520
56±0.3
2.205±.012
2-M5 (P=0.8)
7 .276 in depth
mounting holes
64
2.520
Operation indicator
2-M5 (P=0.8)
mounting holes
2-M5 (P=0.8) tapped
mounting holes
2-M323
cover screw
14
.551
21±0.2
.827±.008
28
1.102
14
.551
7.5±0.2
.295±.008
15.1
.594
25
.984
15.1
.594
30.3
1.193
7.5±0.2
.295±.008
20.4±0.3
.803±.012
Standard type
Cross roller plunger
Standard type
AZ8122
With lamp
General
tolerance:
±0.4 ±.016
10.2
.402
10.2
.402
12.5 dia.3.8
stainless steel roller
PT 1.5max
14.8
.583
38
1.496
+0.2
0
2-4.1
dia.
mounting holes
4
.157
4
.157
M36
cover screw
20.4±0.3
.803±.012
64
2.520
56±0.3
2.205±.012
2-M5 (P=0.8) tapped
7 .276 in depth
mounting holes
2-M5 (P=0.8)
7 .276 in depth
mounting holes
64
2.520
Operation indicator
2-M5 (P=0.8) tapped
mounting holes
2-M323
cover screw
2-M5 (P=0.8)
mounting holes
14
.551
14
.551
21±0.2
.827±.008
28
1.102
15.1
.594
25
.984
7.5±0.2
.295±.008
15.1
.594
30.3
1.193
7.5±0.2
.295±.008
20.4±0.3
.803±.012
Standard type
18 dia.7
nylon roller
(Roller can be rotated
and locked in any
position through 360°)
Roller arm
Standard type
AZ8104
20° m
PT
ax
With lamp
45.2±0.8
1.780±.031
40.2±0.8
1.583±.031
41.2±0.8
1.622±.031
36.2±0.8
1.425±.031
10.2
.402
Weight: 156.5g
R3
0
10.2
.402
M4 arm fixing nut
+0.2
2-4.1 0 dia.
mounting holes
M4 arm
fixing screw
(with hexagonal
holes)
M36
cover screw
2-M5 (P=0.8) tapped
7 .276 in depth
mounting holes
18.5
.728
12.5
.492
General
tolerance:
±0.4 ±.016
18.5
.728
2-M5 (P=0.8)
7 .276 in depth
mounting holes
20.4±0.3
.803±.012
56±0.3
2.205±.012
64
2.520
64
2.520
Operation indicator
2-M5 (P=0.8) tapped
mounting holes
2-M323
cover screw
2-M5 (P=0.8)
mounting holes
14
.551
21±0.2
.827±.008
28
1.102
15.1
.594
38.1
1.5
14
.551
7.5±0.2
.295±.008
25
.984
Standard type
15.1
.594
30.3
1.193
7.5±0.2
.295±.008
20.4±0.3
.803±.012
With lamp
55
VL (AZ8)
Adjustable rod
PT20°
max
General
tolerance:
±0.4 ±.016
2.6 .102 dia. rod
(Roller can be rotated
and locked in any
position through 360°)
M4 rod fastening plate
screw with hexagonal holes
Adjustable lenght of rod
(30-118)
mm inch
(44.9)
(1.768)
36.3±0.8
1.429±.031
(44.9)
(1.768)
36.3±0.8
1.429±.031
5.5
.217
Standard type
AZ8107
10.2
.402
10.2
.402
Rod fastening plate
+0.2
2-4.1 0 dia.
mounting holes
12.5
.492
18.5
.728
Rod mounting metal
18.5
.728
Rod mounting metal
M6 mounting rod
fastening screw with
hexagonal holes
M6 mounting rod
fastening screw with
hexagonal holes
M36
cover screw
64
2.520
2-M5 (P=0.8) tapped
7 .276 in depth
mounting holes
64
2.520
56±0.3
2.205±.012
Operation indicator
2-M5 (P=0.8)
7 .276 in depth
mounting holes
2-M5 (P=0.8) tapped
mounting holes
2-M323
cover screw
14
.551
21±0.2
.827±.008
28
1.102
Adjustable roller arm
Standard type
AZ8108
2-M5 (P=0.8)
mounting holes
14
.551
7.5±0.2
.295±.008
15.1
.594
25
.984
(44.9) (1.768)
7.5±0.2
.295±.008
15.1
.594
20.4±0.3
.803±.012
Standard type
20.4±0.3
.803±.012
30.3
1.193
(44.9) (1.768)
With lamp
(Length of arm can be adjustable within 30 to 70mm 1.181 to 2.756inch by 1mm .039inch pitch)
47.7±0.8
1.878±.031
Adjustable lenght of arm
(30-70)
PT2
0° max
18 dia.7 nylon roller
(Roller can be rotated
and locked in any
position through 360°)
M4 arm fastening
plate screw with
hexagonal holes
47.7±0.8
1.878±.031
42.7±0.8
1.681±.031
33.5±0.8
1.319±.031
28.5±0.8
1.122±.031
42.7±0.8
1.681±.031
33.5±0.8
1.319±.031
28.5±0.8
1.122±.031
General
tolerance:
±0.4 ±.016
10.2
.402
10.2
.402
Arm fastening plate
+0.2
2-4.1 0 dia.
mounting holes
12.5
.492
M36
cover screw
18.5
.728
Mounting metal
M6 arm fastening
plate screw with
hexagonal holes
M6 arm fastening
plate screw with
hexagonal holes
2-M5 (P=0.8)
7 .276 in depth
mounting holes
64
2.520
56±0.3
2.205±.012
2-M5 (P=0.8) tapped
mounting holes
2.0
.079
2-M323
cover screw
64
2.520
2-M5 (P=0.8) tapped
7 .276 in depth
mounting holes
Operation indicator
2-M5 (P=0.8)
mounting holes
2.0
.079
14
.551
14
.551
21±0.2
.827±.008
28
1.102
Flexible rod type
18.5
.728
Mounting metal
15.1
.594
25
.984
(46.4) (1.827)
7.5±0.2
.295±.008
20.4±0.3
.803±.012
Standard type
15.1
.594
30.3
1.193
(46.4) (1.827)
7.5±0.2
.295±.008
20.4±0.3
.803±.012
With lamp
(Should be used with less than 50mm 1.969inch of T.T.)
Standard type
AZ8166
10.2
.402
10.2
.402
PT 30 max
Nylon rod
Weight: 112g
General
tolerance:
±0.4 ±.016
3 dia.
.118
3 dia.
.118
Nylon rod
41.5
1.634
5.8 dia.
.228
5.8 dia.
.228
100±1.5
3.937±.059
+0.2
2-4.1 0 dia.
mounting holes
4
.157
4
.157
M36
cover screw
56±0.3
2.205±.012
2-M5 (P=0.8)
7 .276 in depth
mounting holes
2-M5 (P=0.8) tapped
7 .276 in depth
mounting holes
20.4±0.3
.803±.012
64
2.520
64
2.520
Operation indicator
2-M5 (P=0.8)
mounting holes
2-M5 (P=0.8) tapped
mounting holes
2-M323
cover screw
21±0.2
.827±.008
28
1.102
15.1
.594
25
.984
15.1
.594
30.3
1.193
Standard type
56
14
.551
14
.551
7.5±0.2
.295±.008
7.5±0.2
.295±.008
20.4±0.3
.803±.012
With lamp
VL (AZ8)
Spring wire
General tolerance: ±0.4 ±.016
(Should be used with less than 50mm 1.969inch of T.T.)
Standard type
AZ8169
10.2
.402
10.2
.402
PT 30 max
1.2 dia.
.047 stainless
steel wire
Weight: 112g
1.2 dia.
.047 stainless
steel wire
51.5
2.028
100±1.5
3.937±.059
+0.2
2-4.1 0 dia.
mounting holes
4
.157
M36
cover screw
4
.157
2-M5 (P=0.8) tapped
7 .276 in depth
mounting holes
20.4±0.3
.803±.012
56±0.3
2.205±.012
2-M5 (P=0.8)
7 .276 in depth
mounting holes
64
2.520
64
2.520
Operation indicator
2-M5 (P=0.8)
mounting holes
2-M5 (P=0.8) tapped
mounting holes
2-M323
cover screw
14
.551
14
.551
21±0.2
.827±.008
28
1.102
15.1
.594
25
.984
7.5±0.2
.295±.008
15.1
.594
30.3
1.193
7.5±0.2
.295±.008
20.4±0.3
.803±.012
Standard type
With lamp
mm inch
OPTION
VL Limit Conduit Adapter
t=7 max.
.276
AZ8801
Applicable wire
Electric wire name
Finished outside diameter
Vinyl cabtire cord (VCTF)
8.7 to 11 dia.
.343 to .433 dia.
Vinyl cabtire cable (VCT)
56
13/64
(Same as with the
VL limit switch)
23
.906
(A set of mounting hex. socket screws is supplied.)
18
.709
21
.827
28
1.102
(Same as with the
VL limit switch)
(Front)
14.8
.583
27.8
1.094
Part A
(Tighten up
with no gap)
(Side)
Note: Diagram shows adapter when installed to an AZ8104.
57
VL (AZ8)
LAMP LIGHTING CIRCUIT
1. Spring type
1) When connecting load to N.O. side:
When the switch is at free position, the
lamp is lit, and when the switch operates,
the lamp turns off. (Use the lamp holder
in the same condition as when it was at
the time of shipment.)
(With neon lamp)
Neon lamp
(With LED)
Resistor
13
(With neon lamp)
13
3) When connecting loads to both N.O.
and N.C. sides: Same as in 1).
(Use the lamp holder in the same condition as when it was at the time of shipment. In this case, it is impossible to use
it, changing its direction by 180°.)
(With LED)
Built-in switch
LED Resistor
14
(With neon lamp)
LED Resistor
N.C.
14
13
12
Built-in switch
13
N.O.
14
Load
13
N.O.
14
11
Load
12
Built-in switch
N.C.
AC power source
11
12
Load
13
+
14
Load
11
12
Load
Built-in switch
–
DC power source
N.O.
N.C.
AC power source
Built-in switch
Built-in switch
–
Load
N.C.
Load
~
Neon lamp
12
~
~
N.C.
11
12
Resistor
AC power source
LED Resistor
14
N.O.
11
Load
(With LED)
Neon lamp Resistor
N.O.
N.C.
Load
N.O.
11
2) When connecting load to N.C. side:
When connecting switch is at free position, the lamp turns off, and when the
switch operates, the lamp is lit.
(Use the lamp holder, changing it direction by 180°.)
+
–
DC power source
2. Lead wire type (only for types with LED)
2) When the indication circuit is connect1) When giving indication on N.O. side
ed with load in parallel:
and N.C. side, operation is same as that
Load performs the same operation as
in the case of the spring type. However,
the indication circuit does.
when load is connected to both N.O. side
(When load operates, the lamp is lit, and
and N.C. side, indication can be given on
when load is turned off, the lamp goes
both N.C. side and N.O. side.
out.)
• More loads than for one circuit cannot
be controlled.
• There is no leakage current.
+
DC power source
LED
13
N.O.
14
Resistor
Load
N.C.
11
12
Built-in switch
–
+
DC power source
mm inch
MOUNTING DIMENSIONS
2. Rear mounting
1. Surface mounting
1) When installation hole is tapped.
2) Through hole mounting
t
M4 .157 tap
(P=0.7)
M4 .157
mouting screw
56±0.2
2.205±.008
washer
21±0.2
.827±.008
Depth of screw holes > 15mm .591inch
58
mounting nut
4-4.5 .177 dia.
M5 .197 mounting screw
4-5.5 .217 dia.
M4 .157
mounting screw
56±0.3
2.205±.012
56±0.3
2.205±.012
washer
21±0.3
.827±.012
Thickness of panel < 5mm .197inch
washer
21±0.3
.827±.012
Length of bolt < panel thickness t+7mm .276inch
VL (AZ8)
WIRING (unit: mm inch)
1. Insulation distance greater than
6.4 mm
Reinforced plastic with superior electrical
insulation characteristics is used in the
wiring and charging sections. Despite its
compactness, to maintain stable insulation performance, the insulation distance
for each part is greater than 6.4 mm
without using an insulation sheet.
(Complies with UL, CSA, and VDE.)
2. Includes ground terminal
3. Loose stop terminals used.
Applicable fasten terminal
N.C. use
Max. 6.4 .252
Max. 6.4 .252
3.0 to 3.7 dia.
.118 to .146
Max. 10
.394
Terminal
screw
Max. 10
.394
N.O. use
Max. 6.4 .252
32 1.260
16 .630
3.0 to 3.7 dia.
.118 to .146
3.0 to 3.7 dia.
.118 to .146
With insulated grip
Max. 6.4 .252
Max. 6.4 .252
3.0 to 3.7 dia.
.118 to .146
Max. 6.4 .252
3.0 to 3.7 dia.
.118 to .146
Max. 14
.551
Projection (8 locations)
Fasten terminal
Max. 14
.551
3.0 to 3.7 dia.
.118 to .146
Max. 10
.394
Grounding terminal
Groove (8 points)
Spring (4 locations)
Terminal
washer
Head block direction
change
Applicable wire
Wire name
Wire-strand
2-wire
3-wire
4-wire
2-wire
Vinyl cabtire cord (VCTF)
Vinyl cabtire cable (VCT)
600V vinyl insulation sealed cable
(VVF)
2-wire
Applicable wire
Conductor
0.75mm2·1.25mm2
2.0mm2
0.75mm2·1.25mm2
0.75mm2
1.0 dia. to 1.2 dia.
1.6 dia.
(Roller arm, adjustable roller arm, adjustable rod types)
Finished outside diameter
Round shape
6 dia. to 9 dia.
Flat shape Max. 9.4
Actuator heads
may be moved
in 90° increments to any of
four directions,
by removing
one screw.
Lock screw (Black)
CAUTIONS
1. Over travel (O.T.)
1) When overtravel is too large, life is
shortened due to possible damage to the
mechanism. Please use in the following
appropriate range.
Types
Plunger
(AZ8111, 8112, 8122)
Roller Arm
(AZ8104, 8107, 8108)
Flexible Rod
(AZ8166, 8169)
Overtravel
1.5 to 2.0mm
.059 to .079inch
20 to 30°
15 to 20mm .591 to
.787inch (at the top)
2. Ambient conditions
1) Because these switches are not of
immersion protected construction, their
use in water or oil should be avoided.
Also, locations where water or oil can
normally impinge upon the switch or
where there is an excessive accumulation of dust should be avoided.
2) The use of these switches under the
following conditions should be avoided. If
the following conditions should become
necessary, we recommend consulting us
first.
• Use where there will be direct contact
with organic solvents, strong acids or
alkalis, or direct exposure to their vapors.
• Use where inflammable or corrosive
gases exist.
3) Use within an ambient temperature of
–20 to +60°C –4 to +140°F. (However,
do not allow it to freeze.)
4) In order to maintain the reliability at a
high level under practical conditions of
use, the actual operating conditions
should be checked for the benefit of the
quality of the product.
5) If OT is too big, the life of limit switch
will be shortened switching friction. Use it
with enough margin of OT. 70% of OT
standard value will be good for use.
6) Do not use the switch in a silicon
atmosphere. Case should be taken
where organic silicon rubber, adhesive,
sealing material, oil, grease or lead wire
generates silicon.
7) When wiring, do not connect the lead
wires directly to the terminals, but use
the crimp terminals and tighten them to a
torque of 0.39 to 0.59 N·m {4 to 6
kg·cm}.
8) Avoid use in excessively dusty environments where actuator operation
would be hindered.
9) When used outdoors (in places where
there is exposure to direct sunlight or
rain such as in multistory car parks) or in
environments where ozone is generated,
the influence of these environments may
cause deterioration of the rubber material. Please consult us if you intend to use
a switch in environments such as these.
10) Do not store in places where organic
gas might be generated or in places of
high dust content or high humidity.
3. Installation
1) Tighten the three cover installation
screws equally. Tightening torque is 0.2
to 0.29 N·m (2 to 3 kg·cm).
2) Avoid having extra cord length pushed
into the cord vent. Any extra length when
wiring should be allowed to rest in its
natural position.
59
VL (AZ8)
4. Lamp holder
1) As shown in the photograph, wrench a
minus-driver in the gap between the
cover and the part of the indicator holder
indicated by the arrow in the direction of
insertion, and raise the lamp a little.
2) After removing the indicator holder,
insert it in the reverse direction, and
push it in until a snap is heard.
3) After changing the direction of the
indicator holder, put the cover on it in
such a way that the spring touches the
top of the terminal screw.
(Unless the spring rests completely on
the terminal screw, distortion of the
spring, failure in lighting of the lamp or
short circuit may result.)
Driver
Spring
60
Lamp
holder
Cover
5. Spring type
1) When loads are connected to both
N.O. and N.C. only the indicatin at nonoperation time can be used.
2) Take special care not to damage or
deform the contact spring during change
of indicator holder direction or during
connection work.
3) In the case of VL limit switch with
neon lamp, if the lamp is connected in
series in a 100V circuit, the lamp ceases
to be lighted.
However, for a 200V circuit, up to 2
lamps can be connected in series.
6. Lead type
1) When loads are connected to both
N.O. and N.C. indication can be given on
both N.O. and N.C. sides, but it is impossible to connect the indication circuit to
the load in series and parallel.
SELECTOR CHART
Classification
Subminiature size
Product name
SL (AZ3) Micro
Limit Switches
Compact size
HL (AZH)
Limit Switches
(Die cast case)
HL (AZH)
Limit Switches
(Die cast case)
HL (AZH)
Limit Switches
(Plastic case)
ML (AZ7)
Limit Switches
(standard)
ML (AZ7)
Limit Switches
(Epoxy-Sealed terminal type)
Appearance
AZH20
AZH10
22
AZH23
12
AZ7
AZ7
• A limit switch with
• Switches installed
• An ML compact limit
• High sealability that • High sealability that • Bifurcated type
available.
satisfies IEC IP67.
high-density mounting satisfies IEC IP67.
with both economical switch with an
• Perfect for applicathat improves stroke • Wiring is screw-ter- • Less wiring, less
and compact Z-basic
epoxy-sealed case
tions that prioritize
installation conneccapacity through an
microswitches and
that completely
minal type.
Feature
economy.
tor type.
O.T. absorption-type • Bifurcated type also
limit switch protective encloses the
• LED lamp type also
spring.
construction.
terminal.
available.
available.
• LED lamp type also
• Coil spring system
available.
provides long life.
Rubber-cover type Socket with cord type
Dust-proof type IP60
With lamps Protective construction
Head code
AZ3
Abrasion-proof type IP64
–
–
Surge-proof type IP65
–
–
–
–
–
Corrosion-proof type IP67
–
–
–
–
–
–
–
Oil-resistant type
–
Neon
–
–
–
–
–
–
–
LED
–
–
(with LED lamps)
–
–
–
10A250V AC
10A125V AC
0.4A115V DC
10A250V AC
10A125V AC
0.4A115V DC
107
107
Ratings
(load resistance)
Mechanical
Life
(Min.ope.) Electrical
Operating force
(max.)
(hinge lever type)
4A250V AC
4A125V AC
4A30V DC
0.1A 125V DC
[Standard type] [Bifurcated type]
[Standard type] [Bifurcated type]
[Bifurcated type]
5A125V AC
0.1A125V AC
5A125V AC
0.1A125V AC
5A250V AC
0.1A8V DC
without LEDlamps with LEDlamps 5A250V AC
0.1A8V DC
5A8V DC
0.1A14V DC
5A8V DC
0.1A14V DC
0.1A125V AC 0.1A24V AC
5A14V DC
0.1A30V DC
5A14V
DC
0.1A30V DC
0.1A8V DC
5A30V DC
5A30V DC
0.1A14V DC
0.5A125V DC
0.5A125V DC
0.1A30V DC
0.25A250V DC
0.25A250V DC
107
5
107
107
5
107
5
10
0. 98N {100gf}
1. 96N {200gf}
(short lever type)
2. 94N {300gf}
5x10
2.45N {250gf}
3. 92N {400gf}
11.8N {1,200gf}
(Plunger type)
5x10
2.45N {250gf}
3.92N {400gf}
11.8N {1,200gf}
(Plunger type)
• Rubber cover (Solder
and quick connect
(#110) terminal)
• Socket with cord
Screw terminal
Connector terminal
2x10
1.47N {150gf}, 1.77N {180gf},
1.96N {200gf}, 2.16N {220gf},
2.35N {240gf}, 2.75N {280gf},
5.88N {600gf} max.
2x105
1.47N {150gf}, 1.77N {180gf},
1.96N {200gf}, 2.16N {220gf},
2.35N {240gf}, 2.75N {280gf},
5.88N {600gf} max.
Screw terminal
Screw terminal
Vinyl cabtire cable
(1m 3.281ft)
5x10
5
2.45N {250gf}
3. 92N {400gf}
5
Available
actuators
Terminals
Wiring
Mounting pitch
(Applicable screw)
Available standards
Page
Cabtire code
Cabtire code
Cabtire code
Cabtire code
Cabtire cable
Cabtire cable
Cross-angled wiring
28 14mm
1.102 .551inch
(M4 screw)
33mm 1.299inch
(M4 screw)
33mm 1.299inch
(M4 screw)
33mm 1.299inch
(M4 screw)
25.4mm 1.000inch
(M4 screw)
25.4mm 1.000inch
(M4 screw)
UL, CSA
UL, CSA, TÜV, CE
UL, CSA, TÜV, CE
UL, CSA, TÜV, CE
UL, C-UL, TÜV, CE
–
P.13
P.18
P.18
P.18
P.33
P.33
Fork
Note: Excludes limit switch replacement parts
Actuators
Push plunger
Roller plunger
Cross-roller plunger
Roller arm
Adjustable roller arm
Adjustable rod
Spring wire
Flexible rod
Hinge lever
Roller lever
One-way roller lever
Roller lever
Short
Short
Long
2
Short
Long
Long
Classification
Subminiature size
vertical type
Product name
QL (AZ4) Micro
Limit Switches
Compact size vertical type
DL (AZD1) Mini
Limit Switches
VL (AZ8) Mini
Limit Switches
Vertical type
Touch type
AZ5
Limit Switches
VL-T Mini Touch
Limit Switches
Door switch
Compact
Magnelimit
Magnelimit
Appearance
Head code
With lamps Protective construction
AZ4
AZD1
AZ8
AZ5
AZ84
AZC3
AZC1
• A subminiature, highly accu- • Excellent safety even if the • In addition to the
• Built-in dedicated • Operate just by
• Secured by magnet • Secured by magnet
rate limit switch with built-in
contact point is welded,
characteristics of
circuit breaker
touching lightly.
environment-proof functions. due to the forced contact
stand mounted limit (1 Form A
• Comes with sen- • Built-in switch detection • Built-in switch detection
• Cord extraction can be
opening mechanism.
switches, is com1 Form B).
sitivity adjustment Dual-role switch in
Dual-role switch in
Feature
changed in four directions,
• Block mount system makes pact, easily instal- • Different types of
function and indione unit.
one unit.
due to the dedicated L socket. parts replacement easy.
lable, highly reliactuator availcates operations. • Safe design prevents • Construction possi• LED lamp can also be
• Conforms to DIN stanable, lightweight,
able.
• VL type touch
operator making
ble with 100V AC
attached.
dards.
and economical.
limit switch
errors.
power.
L socket type Socket with cord type
Dust-proof type IP60
–
–
Abrasion-proof type IP64
–
–
Surge-proof type IP65
–
–
–
–
–
–
Corrosion-proof type IP67
–
–
–
–
–
–
–
–
Neon
–
–
–
–
–
–
–
–
LED
–
–
–
–
–
–
[Standard type]
5A250V AC
5A125V AC
0.4A125V DC
[With lamp type]
[Neon lamp type]
5A 240V AC
5A 125V AC
[LED lamp type]
3A 24V DC
[Standard type]
10A125V AC
6A250V AC
2A500V AC
0.8A125V DC
[With lamp type]
[Neon lamp type]
10A 125V AC
6A 240V AC
[LED lamp type]
6A 24V DC
Input voltage
12-24V DC
Output current
150mA
Oil-resistant type
–
Ratings
(load resistance)
Mechanical
Life
(Min.ope.) Electrical
Operating force
(max.)
(hinge lever type)
5A250V AC
6A250V AC
6A380V AC
5A24V DC
107
107
5
3x10
6.86N {700gf}
(Plunger type)
1.11N {113gf}, 4.41N {450gf}
(Arm type)
107
5
1.5x10
6.37N {650gf}
4.90N {500gf}
3.29N {400gf}
107
5
3x10
0.88N {90gf},
5.88N {600gf},
8. 83N {900gf},
19.16N {2,000gf}
5x10
5
1.39N {142gf}
26.67N {2,720gf}
1)
2)
5A (2A) 125V AC
5A (2A) 250V AC
5A (2A) 30VDC
105
5A 125V AC
5A 250V AC
5A 30VDC
107
–
105
5x10
5x104
–
–
3.43N {350gf}
4
Available
actuators
Free attachment
Terminals
Wiring
Mounting pitch
(Applicable screw)
Available standards
Page
• L socket (Solderand
quick connect
(#110) terminal)
• Socket with code
Screw terminal
(Conduit connectors: PF: 1/2, PG:
13.5 types)
Screw terminal
Screw terminal
Screw terminal
Tab #110 terminal
Lead wire
Screw terminal
Cabtire code
Cabtire code
Cabtire cord
Cap tire cable
Cabtire cable
(wiring type)
Cabtire cord
Cabtire cable
Cabtire cord
Cabtire cord
14 28mm
.551 1.102inch
(M4 screws)
22 (47mm)
.866 1.850inch
(M4 screws)
21 56mm
.827 2.205inch
(M4 screws)
30.2 58.7mm
1.189 2.311inch
(M5 screws)
21 56mm
827 2.205inch
(M4 screws)
30mm 1.181inch
(M3)
52mm 2.047inch
(M4)
UL
–
UL, C-UL
UL, C-UL, CE
P.61
P.68
P.72
P.74
UL, CSA
UL, C-UL, TÜV, CE UL, C-UL, TÜV, CE
P.38
P.44
P.52
Notes: 1) Excludes exposed part of terminals, externally mounted components, and magnet catches.
2) Figures in parentheses ( ) indicate rated current of water-resistant type.
Other listed products
Product name
PS Hall Sensors
Appearance
AN9
Detector distance 2.5mm .098inch
Feature
Page
• Magnetic detector type subminiature sensor
• Perfect for slide table limiting
• Economical price with operating display lamp attached.
P.76
3
ACTUATOR SELECTION
Type
4
Classification
Pretravel
(P.T.)
Overtravel Operating
Accuracy
(O.T.)
force (O.F.)
Vibration
shock
Characteristics
Push plunger type
Small
Medium
Large
Excellent
Excellent
High-level accuracy gives firm detection for position
fixing, etc., by using perpendicular movement.
Roller plunger type
(includes cross
roller plunger)
Small
Medium
Large
Excellent
Excellent
Operating range can be widened by mounting
accessory actuators like cams, dogs, cylinders, etc.
High-level detection for position fixing.
Excellent
The stroke in the direction of revolution is large at
between 45° and 90° and the lever angle can be set
at will to within 360° for easy use. Wide angle type
(large O.T.) available. Can be used for wide-range
position fixing.
Roller arm type
Small to
large
Large
Medium
Good to
excellent
Adjustable roller
arm type
Small to
large
Large
Medium
Good to
excellent
Good
Lever length can be altered to allow rough operation
detection using the roller lever characteristics.
Adjustable rod type
Large
Large
Medium
Good
Good
Wide range of operations, and convenient for
uneven mountings. Lightest operation among the
revolving operation type of limit switches. Rod length
is adjustable, and bending is also easy.
Fork
Large
Medium
Medium
Good
Excellent
If operated up to 55° position, revolves automatically
to retain 90° position. Two dog operation enables
recovery operation through single dog, or for anything that has caused the roller position to slip.
Spring wire and
flexible rod
Medium
Large
Small
Possible
Possible
Excluding the thread direction, direction can be
adjusted up to 360°. Operating power is the lowest
of the limit switches, and is effective in detecting
when direction and conditions are uneven. In order
to absorb the movements after operation in the actuator part, work slippage tolerances are also large.
Hinge lever type
Large
Medium
Small
Possible
Possible
Using a low speed, low torque cam, the lever can
assume various shapes suited to the operation. The
lever is very sturdy.
Roller lever type
Large
Medium
Small
Possible
Possible
Suited to high speed cams through the attachment
of a hinge roller lever.
One way roller lever
type
Medium
Medium
Medium
Possible
Possible
Operation is possible with both hinge lever type and
one way operation, but the roller will break if operated in the opposite direction, rendering the unit inoperable. Can be used to prevent opposite direction
movement.
Roller lever type
Medium
Medium
Medium
Possible
Possible
The roller position can be changed.
TECHNICAL INFORMATION
Standard glossary
CONSTRUCTION
• Fixed rating values
• Actuator
•
•
•
•
•
•
The values that guarantee the standards for the limit switch characteristics and functions. For example, the
rated current and rated voltage,
which are preset conditions (load
type, current, voltage, frequency,
etc.)
Operating object
The mechanism and mountings that
operate the limit switch actuator.
Used for mechanical operators
such as cams and dogs.
Detective object
The unit other than mechanical
mountings that operate the limit
switch. Products, parts, jigs, etc.
Reaction spring (movable spring)
The mechanical part that switches
the limit switch contact is called
either the reaction spring or the
moveable spring.
Contact
When the counter-spring revolves,
power is switched on and off through
the contact between metal parts
Contact gap
The effective clearance between the
fixed contact and the moveable contact. Also called breaking distance.
Contact arrangement
The construction of the electrical
input/output circuit depending on
use. For example, the following two
applications:
•
•
•
This part directly detects movement
of the dog, cam, and so forth in the
operating unit, and transmits external
force to the changeover mechanism,
thereby engaging the moveable contact and operating the switch.
Headblock
An independent part of the actuator
mechanism of the Limit Switch.
Wiring vent (cord vent)
The seal on the wiring at the mouth
of the wiring vent. Also called the
conduit vent for the screw hole used
in the wiring.
Terminals
The part of the wiring work in the
wiring that forms the circuit for electrical input and output.
OPERATING CHARACTERISTICS
• Operating Force (O.F.)
•
•
•
•
Roller
Head block
Actuator
Arm
Cam
Roller
Plunger
•
Reset spring
Pushbutton
•
Front view
Cam
Cord vent
•
Roller
Reset spring
F
Pushbutton
N.O.
N.C.
[1 Form C(Single Pole Double Throw)]
COM
VL limit switch
•
The force required to cause contact
snap-action. It is expressed in terms
of force applied to the actuator.
Release Force (R.F.)
The force to be applied to the actuator, at the moment contact snaps
back from the operated position to
unoperated position.
Pretravel (P.T.)
Distance of the actuator movement
from free position to operating position.
Overtravel (O.T.)
The distance which the actuator is
permitted to travel after actuation
without any damage to the switching
mechanism.
Total Travel (T.T.)
The distance which the actuator is
permitted to travel from free position
without any damage to the switching
mechanism.
Movement Differential (M.D.)
The distance from operating to
release position of the actuator.
Operating Position (O.P.)
The position of the actuator when the
traveling contact snaps to the fixed
contact.
Release Position (R.P.)
The position of the actuator when the
traveling contact snaps back from
the operating position to its original
position.
Free Position (F.P.)
Position of the actuator when no
force is applied to it.
Free position
N.C.
F
N.C.
O. P. Operating position
O. P. Operating position
P.T. P.T.
[1 Form Z(Double Break Double Make)]
N.O.
O.T.
M.D.
O.T.
M.D.
N.O.
R.P.
R.P.
• Contact type
•
Used in opposition to a semiconductor switch that has switching characteristics. Fulfills switch functions
through a mechanical ON/OFF contact.
Terminal mold
After wiring, the connecting part is
molding by epoxy resin for waterproof, oil-resistant and dust-proof
capabilities.
R.F.
O.F.
P.T.
R.T.
M.D.
O.T.T.F.
F.P.
T.T.
O.P.
R.P.
Standard position
Note: F.P., O.P., and R.P. are expressed as distances
from the standard position.
5
TECHNICAL INFORMATION
Glossary relating to the EN60947-5-1
• EN60947-5-1
•
EN standard same as IEC947-5-1
Utilization categories
The following examples express the
classification of switches by category
of use.
Current
type
Category
Contents
AC
AC-15
Controls electromagnetic
loads in excess of 72VA
(Volt Amperes.)
DC
DC-12
Controls resistance
loads and semiconductor
loads.
• Rated impulse withstand voltage
•
•
• Rated operational voltage (Ue)
•
•
6
The maximum rated voltage for
switch operation. This must never
exceed the maximum ratings insulation voltage (Ui).
Rated operational current (Ie)
The maximum rated current for
switch operation.
Rated insulation voltage (Ui)
The maximum rated current value
which guards the switch’s insulation
functions, forming the parameters for
the resistance values and the mounting distance.
•
•
(Uimp)
The peak impulse current value
which enables the switch to resist
without insulation breakdown.
Rated enclosed thermal current
(Ithe)
The current value that enables current to flow without exceeding the
specified maximum temperature in
the recharging contact switch. If the
pins are made of brass, the maximum temperature limit is 65°C 149°F.
Conditional short circuit current
The current the switch can resist
until the short circuit protection
device is activated.
Short circuit protection device
A device that protects the switch
from short circuits through a circuit
break (breakers, fuses, etc.)
Switching overvoltage
The surge momentarily generated
when a circuit is closed. Must be
lower than the Uimp value.
• Pollution degree
Expresses in levels the environment
in which the switch is used. The four
levels are shown below.
Limit switches come under contamination level 3.
Pollution
degree
Contents
1
No contamination or, even if contamination is present, only non-conducting contamination is generated.
2
Normally, only non-conducting contamination is generated, but there
remains the possibility of temporary
conducting contamination when the
circuit is formed.
3
Conducting contamination is generated, or else dry non-conducting
contamination is generated by circuits which can be anticipated.
4
Permanent conducting contamination is generated by dust, rain,
snow, and other conductors.
PROTECTIVE CONSTRUCTION
Protective construction
Expresses the degree of protective construction that guards the level of functionability of the switch against ingress of solid
objects, water, and oil. The standards are IEC529 (IEC: International Electrotechnical Commission) standards. IEC standards
determine the level of protection against both water and solid objects, but not against oil.
Protection against both water and solid objects
IP- □ □
Level Protection level
0
Protection level and test methods
—
No particular protection
Protection against rain fall
3
Rain-proof
No damage incurred when sprayed with water
continuously for 10 minutes at angles of up to 60°
from the perpendicular.
Protection against flying foam
4
Foam-proof
No damage incurred when sprayed with water
continuously for 10 minutes at angles of up to 180°
from the perpendicular across a wide area.
Protection
against water
Protection against spray
5
Nozzle radius 6.3mm .248inch
Water pressure 30kP
Spray-proof
No damage incurred when sprayed with a jet of water
for 3 minutes from all directions, as per the diagram
on the left.
3m
9.843ft.
Protection against waves
Nozzle radius 12.5mm .492inch
Water pressure 100kP
6
Water proof
Water does not invade the interior when sprayed with
a jet of water for 3 minutes from all directions, as per
the diagram on the left.
3m
9.843ft.
7
1m
3.281ft.
Protection against corrosion while
immersed in water
Corrosionproof
Water does not invade the interior during immersion
for 30 minutes at a depth of 1m 3.281ft..
Level Protection level
Protection level and test methods
Protection against solid
objects exceeding
1mm .039inch in size.
4
1.0 .039 dia.
—
A hard wire 1mm dia. .039 inch dia. across cannot
penetrate the inside.
Protection against dust
Protection against
solid objects
5
—
The unit is left for 8 hours in an atmosphere in which
2kg of talcum powder per 1m3 is floating. No damage
incurred from talcum powder penetrating the inside.
Protection againt dust
(dust does not penetrate)
6
Dust-proof
The unit is left for 8 hours in an atmosphere in which
2kg of talcum powder per 1m3 is floating. The talcum
powder does not penetrate the inside.
Note: 1. All of the tests cited above were conducted with the cord vent (conduit vent) tightly shut.
2. The above protective constructions are based on IEC standard but major differences may arise due to length of use and operating environment.
This should be thoroughly discussed and verified.
3. When the corrosion-proof model is immersed in water for 30 minutes or more, verify that no water has penetrated the inside before use.
7
CAUTIONS FOR USE
DESIGN OF OPERATING DOG AND OPERATING SPEED
Pay attention to the following points
when designing the dog for limit switch
operation.
1. Make the dog faceplate as smooth
as possible.
2. Adjust both the dog angle and the
set arm angle as below, depending on
the operating speed.
3. The depth (h) of the dog effects the
lifespan of the limit switch. Therefore,
set the depth to a maximum of 80% of
the Total Travel (T.T.)
4. The relationship between the speed
of the dog (V = m/s) and the tip angle
(α) is as follows:
1) V&0.2m/s
α = 45° to 90°
V
h
5) Roller plunger type
3) 0.5m/s ! V&2m/s
α
V
α
h
F
θo
α
Vmax (m/s)
40°
0.7
35°
0.9
30°
1.3
25°
2.0
The maximum tolerable speed can be
extended by further reducing the dog
rise angle from 45° when 0.5m/s !
V&2m/s. It is necessary to set the arm
so that the dog’s cutting surfaces are
always parallel (θ o = 90°– α)
4) Overriding the dog (V&0.2m/s)
α
Vmax (m/s)
45°
0.2
60°
0.1
60 to 90°
0.05
When V&0.2m/s, set the arm to perpendicular and set the arm rise angle
to between 45° and 90°. If the dog rise
angle is reduced, the maximum tolerable speed is increased.
As a rule, α = 45° is optimum.
2) V&0.5m/s
α = 45°
V
h
F
θ o = 45°
Because the arm jiggle is as a minimum at a comparative speed such as
V&0.5m/s, setting both the dog angle
so that it travels perpendicularly and
the arm angle to 45° is optimum.
8
α
h
α
α
h
α
Vmax (m/s)
45°
0.2
60°
0.1
60 to 90°
0.05
If overriding the dog, set the arm perpendicularly, so that α =45°. If the dog
angle is reduced, the tolerable speed
is increased.
α
Vmax (m/s)
h
20°
0.5
(0.5 to 0.7) T.T.
30°
0.25
(0.6 to 0.8) T.T.
Even if overriding the dog, set the forwards and rearwards motion exactly
the same, and avoid any settings that
make the actuator accelerate rapidly
from the dog.
5. Operation speed
1) When the operation (acting and
reverting) speed is exceedingly slow,
switching of the contacts will become
unstable and this could cause problems such as failure to make contact
and welding. As a guide, the speed
should be at least 1mm/s.
2) When the operation (acting and
reverting) speed is exceedingly fast,
be careful because the violent motion
could cause breakage and with
increased frequency, contact switching
will not be able to keep up. As a guide,
the switching frequency should be
within 20 times per minute.
CAUTIONS FOR USE
PROTECTION CIRCUIT
2. Do not connect either irregular poles
or power sources to a switch contact.
Power connection examples (irregular
pole connection)
3. Avoid circuits where power may find
a way between the contact points (as
this may cause welding.)
NO GOOD
NO GOOD
Load
L
~
1. The ON/OFF circuit for the guidance
load may suffer contact damage due to
surges or inrushes when the power is
turned either ON or OFF.
Consequently, insertion of a protective
circuit as per the following diagram is
recommended, in order to protect the
contacts.
Cautions for use
Limit switch contact
r
c
R
Limit switch contact
r
c
R
(1) r must be a minimum
of 10Ω;
(2) When using AC power:
Q Impossible when R
impedance is large.
W Possible when c, r
impedance is sufficiently small compared with R impedance.
Can be used with both
AC and DC as appropriate.
r~R
C: 0.1 µF
Load
Load
GOOD
L
Load
Load connected to same pole
Example of unsuitable power connection (abnormal power connection)
Risk of AC and DC being mixed.
Load
NO GOOD
L
AC
R
(1) Dedicated DC use.
(2) AC is impossible
DC
Limit switch contact
ZNR
Varistor
R
Can be used with both
AC and DC as appropriate.
200V
100V
Limit switch contact
Diode
~
L
Circuit
Load
4. Using electronic switch circuits (low
power, low current)
1) Bouncing and chattering are generated due to collision between the contacts when the limit switch is switching
between them, and this sometimes
causes such problems as white noises
and error pulses in both the electronic
circuit and the reverberation equipment.
2) If the generation of bouncing and
chattering becomes a problem, it is
necessary to consider installing a CR
circuit or other absorption circuit given
the circuit design.
3) This is particularly necessary when
high contact reliability is needed, and
is unsuitable for silver contact switches. Switches with gold contacts possess excellent performance.
L
9
CAUTIONS FOR USE
CAUTIONS FOR USE
1) Do not attempt to physically alter
any part of the switch itself, such as
the actuator, or switch attachment
vent, as this may cause alterations to
both characteristics and performance,
and damage the insulation.
2) Do not pour any lubricants such as
oil or grease onto the moving parts of
the actuator, as there is a possibility
that this will cause a malfunction due
to seepage into the inside, and impair
the motion. Silicon-based grease in
particular affects the contact points
badly.
3) If the switches are not to be used for
an extended period of time, their contact reliability may be reduced due to
oxidation of the contact points.
Because accidents may result from the
impaired conductivity, always implement a check beforehand.
4) Prolonged continuous use of the
switch hastens deterioration of the
parts (especially the seal rubber) and
may cause a malfunction in the
release. For this reason, always implement a check beforehand.
5) Usage in the vicinity of either the
switch operating position (O.P.) or the
release position (R.P.) results in unstable contacts. If using the NC contact
point, set the actuator to return to the
free position (F.P.) Also, is using the
NO contact point, hold the ratings values down to 70 to 100% for the overtravel (O.T.)
6) If the actuator is forced beyond its
total travel (T.T.), the internal mechanism may be damaged. Always use
within the T.T.
7) Do not apply unreasonable force to
the actuator, as this may result in damage and impaired movement.
8) The switch, if dropped, may break
due to excessive vibration and impact.
Therefore, please use extra caution
when transporting and installing.
9) Condensation inside the switch may
occur if there are rapid ambient temperature changes when the switch is in
a high temperature and humidity.
Since this occurs easily during marine
transport, be extra cautious of what the
environment will be when shipping.
Condensation is the phenomenon in
which water vapor condenses into
switch-adhering water droplets when
the temperature rapidly drops in a
high-temperature, high-humidity
atmosphere or when the switch is
quickly moved from a low temperature
location to a place of high temperature
and high humidity. It is the cause of
insulation deterioration and of rust.
10) Be careful of freezing in temperatures below 0°C. Freezing is the phenomenon in which moisture adhering
to the switch from condensation or
when in unusually high-humidity environments freezes onto the switch
when the temperature drops below the
freezing point. Please extra caution
because freezing can lock moving
parts, cause operational delays, or
interfere with conductivity when there
is ice between the contacts.
11) In low-temperature, low-humidity
conditions, plastic becomes brittle and
the rubber and grease harden, which
may lead to malfunction.
12) Long term storage (including during transport) in high temperature or
high humidity environments or where
the atmosphere contains organic or
sulfide gas, will cause sulfide or oxide
membrane to form on the contact surfaces. This in turn will cause unstable
or failed contacting that may lead to
functional malfunction. Please verify
the atmosphere when storing and
transporting.
13) Packaging should be designed to
reduce as much as possible the potential influence of humidity, organic gas,
and sulfide gas, etc.
14) Please avoid sudden changes in
temperature. This is a cause of switch
deformation and encourages the seal
structure to breathe, which may lead to
seal failure and operational malfunction.
15) If installing a thermoplastic resin
case, the use of a spring washer tightened directly against the case will
cause the case to collapse and
become damaged. Therefore, please
add a flat washer before tightening.
Also, be careful not to install if the
case is being twisted.
16) For the purpose of improving quality, materials and internal structure may
be changed without notice.
17) When used outdoors (in places
where there is exposure to direct sunlight or rain such as in multistory car
parks) or in ambient temperature environments where ozone is generated,
the influence of these environments
may cause deterioration of the rubber
material. Please consult us if you
intend to use a switch in such environments.
PRECAUTIONS RELATING TO THE INSTALLATION ENVIRONMENT
Avoid using in silicon environments
such as organic silicon-based rubber,
solvents, sealants, oil, grease, or
wiring.
10
IMPROVEMENT EXAMPLES
Poor design
Improved design
Explanation
@
r
Problem • Dog adjustment is difficult.
Solution • Separate each one until the dog
can be adjusted.
r
Problem • The dog axis is too long, and slips
out during operation.
• For this reason, the limit switch
operating position slips.
Solution • Firmly fix the dog plate to the base.
@
Dog axle
@
Detector
Printer
Detector
r
Rotation axle
Conveyer
Conveyer
@
r
Rotation axle
@
Problem • The detector sinks, applying force
to the limit switch.
• The limit switch O.T. cannot be set.
Solution • Relieve the pressure using an
additional actuator, and the O.T.
can also be set.
Problem • The area around the actuator coil
is easily damaged.
• Friction generated during operation.
Solution • Relieve the friction by installing an
additional actuator.
• Change the type of limit switch.
r
Problem • Workers keep bumping the actuator.
Solution • Fit a protective cover to the side of
the limit switch.
r
Problem • Because the cord vent for the limit
switch faces upwards, water droplets
and so forth can easily penetrate the
interior.
• The cord is constantly moving and
thus easily damaged.
Solution • Fix the limit switch position on the
stationary board.
• Fit a protective cover, so that water
and oil cannot come into direct contact with the limit switch.
r
Problem • The cord is not fixed, and gets
pulled during work.
• Dog adjustment is ineffective.
Solution • Change the limit switch position,
and fix the cord.
• Attach an adjustment mechanism
to the dog.
r
Problem • The limit switch is near a high-temperature area.
• Dog adjustment is ineffective, and
the dog keeps bumping the lever.
Solution • Move the limit switch further away.
• Make dog adjustment possible,
and change the shape of the unit.
Limit
@
Protective cover
@
@
High temperature
High temperature
11
IMPROVEMENT EXAMPLES
Poor design
@
Detector
Improved design
Problem • The detector is scratched.
• Limit attachment adjustments are
difficult
• The actuator is damaged.
• Specimen transfer is impeded.
Solution • Fix the limit position to behind the
dumper to solve the above problems.
Dumper
r
Conveyer
@
Rotation axle
r
Conveyer
Conveyer
Detector
Problem • The transfer path of the detector is
not fixed, and it keeps bumping the
actuator.
• The operating position is unstable.
• The actuator is damaged.
Solution • Stabilize the operating position by
fitting an additional actuator.
• Make limit switch adjustment possible.
Detector
@
r
Problem • Stroke adjustment ineffective.
• Release the limit switch position,
and ensure that the dog does not
bump the lever.
Solution • Make dog adjustment possible.
• Change the limit switch position,
and sure that the dog does not
bump the lever.
r
Problem • The cam shape is unsuitable
(especially during release and
strike release.)
• Direction of limit switch attachment
is unsuitable.
Solution • Render the cam shape smooth.
• Change the limit switch position.
Dog
@
12
Explanation
Table of Recommended Substitute Products for Discontinued Products
Products to be discontinued
Recommended substitute products
Page
AZ1 series Limit switches
ML (AZ7) Limit switches
P.33
AZ2 series Limit switches
ML (AZ7) Limit switches
P.33
Slitted type Limit switches (AZ6)
ML (AZ7) Limit switches
P.33
New slitted type Limit switches (AZ66)
ML (AZ7) Limit switches
P.33
Recommended substitute products
Installation
Products to be discontinued
AZ1∗∗∗
You cannot use this nut
for panel installation.
AZ7∗∗∗
Please note that installation method and
operation characteristics are different.
AZ2∗∗∗
AZ7∗∗∗
Please note that installation method and
operation characteristics are different.
AZ6∗∗∗
AZ7∗∗∗
Please note that installation method and
operation characteristics are different.
AZ66∗∗∗
AZ7∗∗∗
Please note that installation method and
operation characteristics are different.
77
FOREIGN STANDARDS OVERVIEW
1. International Standards
3. Europe
IEC standard
EN standard
International Electrotechnical Commission
By promoting international cooperation toward all
problems and related issues regarding
standardization in the electrical and electronic
technology fields, the IEC, a non-governmental
organization, was started in October, 1908, for the
purpose of realizing mutual understanding on an
international level. To this end, the IEC standard
was enacted for the purpose of promoting
international standardization.
2. North America
LISTING MARK
Fig. 1
RECOGNITION MARK
Fig. 2
Certification
Fig. 3
Component Acceptance
Fig. 4
Fig. 5
Fig. 6
78
UL (Underwiters Laboratories Inc.)
This is a non-profit testing organization formed in
1894 by a coalition of U.S. fire insurance firms,
which tests and approves industrial products
(finished products). When electrical products are
marketed in the U.S., UL approval is mandated in
many states, by state law and city ordinances. In
order to obtain UL approval, the principal parts
contained in industrial products must also be ULapproved parts.
UL approval is divided into two general types. One
is called “listing” (Fig. 1), and applies to industrial
products (finished products). Under this type of
approval, products must be approved
unconditionally. The other type is called
“recognition” (Fig. 2), and is a conditional approval
which applies to parts and materials.
CSA (Canadian Standards Association)
This was established in 1919 as a non-profit, nongovernmental organization aimed at promoting
standards. It sets standards for industrial products,
parts, and materials, and has the authority to judge
electrical products to determine whether they
conform to those standards. The CSA is the ultimate
authority in the eyes of both the government and the
people in terms of credibility and respect. Almost all
states and provinces in Canada require CSA
approval by law, in order to sell electrical products.
As a result, electrical products exported from Japan
to Canada are not approved under Canadian laws
unless they have received CSA approval and
display the CSA mark. Approval is called
“certification”, and products and parts which have
been approved are called “certified equipment”, and
display the mark shown in Fig. 3. The mark shown
in Fig. 4 is called the “Component Acceptance”
mark, and indicates conditional approval which is
applicable to parts. The C-UL mark shown in Fig. 5
(finished products) and Fig. 6 (parts) indicates that
the product has been tested and approved in UL
laboratories, based on UL and CSA standards,
through mutual approval activities.
European Standards/Norme Europeennee
(France)/Europaishe Norm (Germany)
Abbreviation for European Standards. A unified
standard enacted by CEN/CENELEC (European
Standards Committee/European Electrical
Standards Committee). EU and EFTA member
nations employ the content of the EN standards into
their own national standards and are obligated to
abolish those national standards that do not agree
with the EN standards.
(1) Germany
VDE
TÜV Rheinland
VDE (Verband Deutscher Elektrotechniker)
The VDE laboratory was established mainly by the
German Electric Technology Alliance, which was
formed in 1893. It carries out safety experiments
and passes approval for electrical devices and
parts. Although VDE certification is not enforced
under German law, punishment is severe should
electrical shock or fire occur; therefore, it is, in fact,
like an enforcement.
TÜV (Technischer Überwachungs-Verein)
TÜV is a civilian, non-profit, independent
organization that has its roots in the German Boiler
Surveillance Association, which was started in 1875
for the purpose of preventing boiler accidents. A
major characteristic of TÜV is that it exists as a
combination of 14 independent organizations (TÜV
Rheinland, TÜV Bayern, etc.) throughout Germany.
TÜV carries out inspection on a wide variety of
industrial devices and equipment, and has been
entrusted to handle electrical products, as well, by
the government. TÜV inspection and certification is
based mainly on the VDE standard.
TÜV certification can be obtained from any of the 14
TÜVs throughout Germany and has the same
effectiveness as obtaining VDE certification.
SAFETY STANDARDS RECOGNITION
Limit switches
Product name
File No.
E122222
SL limit switches
Dies-cast case standard load type
HL limit
switches
Die-cast case low level load type
(includes connector type)
Plastic case standard load type
Standard type
Epoxy-sealed terminal type
With lamp
QL limit switches
Standard type
VL limit
switches
With neon lamp
10A 250V AC
–
–
E122222
–
–
5A 250V AC
E122222
Vertical limit switches
E99838
5A 250V AC
Pilot duty B300
E43149
2A 250V AC
Water-resistant type
E122222
5A 250V AC
Pilot duty B300
TÜV approval
Approved ratings
–
DC-12 1A 30V-
J9650514
DC-12 0.1A 30V-
J9650515
0.1A 30V DC
E122222
(C-UL)
–
–
LR55880
5A 250V AC
Pilot duty B300
6A 380V AC
Pilot duty A300
10A 1/2HP 125V AC
6A 1/2HP 250V AC
5A 250V AC
Standard type
File No.
–
0.1A 30V DC
LR55880
5A 250V AC
Pilot duty B300
E122222
E122222
Magnelimit
CSA certified
Approved ratings
4A 250V AC
5A 250V AC
Pilot duty B300
0.1A 30V DC
DL limit switches
Compact
Magnelimit
File No.
LR55880
0.1A 30V DC
E122222
Plastic case low level load type
ML limit
switches
UL recognized
Approved ratings
4A 250V AC
5A 250V AC
Pilot duty B300
AC-15 2A 250V~
DC-12 1A 30VDC-12 0.1A 30V-
10A 250V AC
J9551204
AC-15 2A 250V~
–
–
5A 250V AC
–
–
–
J9551203
–
–
–
–
AC-15 2A 250V~
–
J9551205
AC-15 2A 250V~
E122222
(C-UL)
E122222
(C-UL)
5A 250V AC
Pilot duty B300
6A 380V AC
Pilot duty A300
–
–
–
–
5A 250V AC
–
–
2A 250V AC
–
–
5A 250V AC
Pilot duty B300
–
–
E43149
(C-UL)
E43149
(C-UL)
E122222
(C-UL)
CE MARKINGS OVERVIEW
Limit switches conforming to EN/IEC standards
The limit switches shown below conform to both EN and IEC standards, and may display the CE markings.
Product classification
Limit switches
Product name
HL
ML
VL
DL
Magnelimit
Suitable standard
EN60947-5-1
EN60947-5-1
EN60947-5-1
EN60947-5-1
EN60947-5-1
Approving body
TÜV
TÜV
TÜV
TÜV
–
File No.
J9650514/J9650515
J9551204
J9551203
J9551205
–
Note: Refer to the page for each individual product for detailed approval conditions and approved types. Moreover, the HL limit
switch alone does not display the CE mark as standard. If the CE mark is necessary, add (CE) to the end of the part No.
when ordering.
What are EN standards?
An abbreviation of Norme Europeenne
(in French), and called European
Standards in English. Approval is by vote
among the CEN/CENELEC member
countries, and is a unified standards limited to EU member countries, but the
contents conform to the international
ISO/IEC standards.
If the relevant EN standard does not
exist, it is necessary to obtain approval
based on the relevant IEC standard or, if
the relevant IEC standard does not exist,
the relevant standard from each country,
such as VDE, BS, SEMKO, and so forth.
CE markings and EC
directives
The world’s largest single market, the
European Community (EC) was born on
1 January 1993 (changing its name to
EU in November 1993. It is now always
expressed as EU, apart from EC directives.) EU member country products
have always had their quality and safety
guaranteed according to the individual
standards of each member country.
However, the standards of each country
being different prevented the free flow of
goods within the EU. For this reason, in
order to eliminate non-tariff barriers due
to these standards, and to maximize the
merits of EU unification, the EC directives were issued concomitant to the
birth of the EU.
The EN standards were established as
universal EU standards in order to facilitate EU directives. These standards
were merged with the international IEC
standards and henceforth reflect the
standards in all countries. Also, the CE
markings show that products conform to
EC directives, and guarantee the free
flow of products within the EC.
Appropriate EC directives
for control equipment
products
The main EC directives that are to do
with machinery and electrical equipment
are the machinery directive, the EMC
directive, the low voltage directive, and
the telecom directive. Although these
directives have already been issued, the
date of their enactment is different for
each one. The machinery directive was 1
January 1995. The EMC directive was 1
January 1996, and the low voltage directive was enacted from 1 January 1997.
The telecom directive was established by
the separate CTR (Common Technology
references.)
79