’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
ML (AZ7)
Limit Switches
Terminal mold types (epoxy-sealed terminal type) also available.
FEATURES
Standard type
(Short roller lever)
RoHS Directive compatibility information
http://www.nais-e.com/
1. Long life
High efficiency coil spring switching
mechanism for long life: More than 107
mechanical operations.
2. Great mechanical strength while
being compact and lightweight
The attachment pitch is 25.4mm
(1.000inch), same as for the Z basic
model microswitch. Also, the outer cover
cap uses a strong plastic with excellent
mechanical characteristics. An M4 bolt
can be used for the attachment.
3. The overtravel (O.T.) is large with
great shock absorption
4. The switch itself is constructed to
be dust-proof and oil resistant
The switch itself is closed flush with the
diaphragm and the compressed rubber
ring, so that the terminal mold type
(epoxy-sealed terminal type) is perfectly
flush with the terminal parts.
TYPICAL APPLICATIONS
Used in sequence control of food processing machines, automatic packaging
machines, conveyers, and processors.
Ideal for light industry machinery when
installation pace is limited and a protective construction is sought.
PRODUCT TYPE
2. Terminal mold type (epoxy-sealed terminal type)
1. Standard type
Actuator
Short push plunger
Push plunger
Hinge lever
Roller lever
One-way roller lever
Hinge short lever
Short roller lever
One-way short roller lever
Panel mount push plunger
Panel mount roller plunger
Panel mount cross roller plunger
Flexible rod
Part No.
AZ7100
AZ7110
AZ7120
AZ7121
AZ7124
AZ7140
AZ7141
AZ7144
AZ7310
AZ7311
AZ7312
AZ7166
Notes) 1. When ordering an overseas-specified product,refer to the foreign
standards overview.
2. Cadmium free contact types are available on a custom-made basis.
Please add an “F” to the end of the part number when ordering.
Actuator
Short push plunger
Push plunger
Hinge lever
Roller lever
One-way roller lever
Hinge short lever
Short roller lever
One-way short roller lever
Panel mount push plunger
Panel mount roller plunger
Panel mount cross roller plunger
Flexible rod
Cord outlet direction
N.C.
COM
Part No.
AZ7400
AZ7401
AZ7405
AZ7406
AZ7410
AZ7411
AZ7415
AZ7416
AZ7420
AZ7421
AZ7425
AZ7426
AZ7430
AZ7431
AZ7435
AZ7436
AZ7440
AZ7441
AZ7445
AZ7446
AZ7450
AZ7451
AZ7460
AZ7461
33
ML (AZ7)
FOREIGN STANDARDS
Standards
Applicable product
File No.
: E122222
Ratings
: 10A 250V AC
Product type : Standard type only
File No.
: E122222
Ratings
: 10A 250V AC
Product type : Standard type only
File No.
: J9551204
Ratings
: AC-15 2A/250V~
Product type : Standard type only
UL
C-UL
TÜV
Part No.
Order by standard part No.
SPECIFICATIONS
1. Rating
Load
Rated control voltage
Resistive load (cosφ]1)
Inductive load (cosφ]0.4)
10A
10A
0.4A
6A
4A
0.05A
125V AC
250V AC
115V DC
Motor or lamp load
N.C. contact
N.O. contact
3A
1.5A
1.5A
1A
–
–
2.Characteristics
Contact arrangement
Initial contact resistance, max.
Contact material
Initial insulation resistance (At 500V DC)
Initial breakdown voltage
Shock resistance
In the free position
In the full operating position
Vibration resistance
Mechanical
Electrical
Ambient temperature/Ambient humidity
Max. operating speed
Expected life
(Min. operation)
1 Form C
15mΩ* (By voltage drop 6 to 8V DC at rated current)
AgCdO contact
Min. 100 MΩ
1,500 Vrms for 1 min Between non-consecutive terminals
2,000 Vrms for 1 min Between dead metal parts and each terminal
2,000 Vrms for 1 min Between ground and each terminal
Max. 98m/s2 {10G}
Max. 294m/s2 {30G}
55 Hz, double amplitude of 1.5 mm
107 (at 50 cpm)
2 105 (at 20 cpm)
–20 to +60°C –4 to +140°F/Max. 95% R.H. (at 20°C 68°F)
120 cpm
* The resistance of a copper wire is not included.
3.EN60947-5-1 performance
DATA
Rating
250VAC
2.5kV
2.5kV
10A
100A
10A fuse
IP64 (switch)
3
1. Life curve
108
Operations (104)
Item
Rated insulation voltage (Ui)
Rated impulse withstand voltage (Uimp)
Switching over voltage
Rated enclosed thermal current (Ithe)
Conditional short-circuit current
Short-circuit protection device
Protective construction
Pollution degree
4. Operating characteristics
107
12
5V
106
AC
cos
φ1
105
Movement
Characteristics
Pretravel
Overtravel
Differential
O.F. (N{gf}) R.F. (N{gf})
(P.T.), max.
(O.T.), min.
(M.D.), max.
max.
min.
mm inch
mm inch
Actuator
mm inch
5.88 {600}
0.98 {100}
2.0 .079
0.8 .031
0.8 .031
Short push plunger
Push plunger
5.88 {600}
0.98 {100}
2.0 .079
0.8 .031
5.0 .197
Hinge lever
1.47 {150}
0.39 {40}
13.5 .531
3.2 .126
4.0 .157
Roller lever
1.77 {180}
0.49 {50}
11.0 .433
2.4 .094
3.0 .118
One-way roller lever
1.96 {200}
0.59 {60}
11.0 .433
2.4 .094
3.0 .118
Hinge short lever
2.16 {200}
0.59 {60}
8.5 .335
2.0 .079
2.5 .098
Short roller lever
2.35 {240}
0.78 {80}
6.5 .256
1.5 .059
2.0 .079
One-way short roller lever
2.75 {280}
0.98 {100}
6.5 .256
1.5 .059
2.0 .079
Panel mount push plunger
5.88 {600}
0.98 {100}
2.0 .079
0.8 .031
6.0 .236
Panel mount roller plunger
5.88 {600}
0.98 {100}
2.0 .079
0.8 .031
6.0 .236
Panel mount cross roller plunger 5.88 {600}
0.98 {100}
2.0 .079
0.8 .031
6.0 .236
Flexible rod
1.18 {120}
–
25 .984
–
11 .433
Operating Position
(O.P.) mm inch
30±0.8 1.181±.031
44±1.2 1.732±.047
25±2.0 .984±.079
40±1.9 1.575±.75
50±2.0 1.969±.079
25±1.3 .984±.051
40±1.6 1.575±.063
50±1.6 1.969±.063
21.8±0.8 .858±.031
33.3±1.2 1.311±.047
33.3±1.2 1.311±.047
36 1.417 (T.T.)
5
10
Load current (A)
WIRING DIAGRAM
Circuit
ML
COM
N.C.
N.O.
Terminal
Note) For the operating characteristics, refer to the TECHNICAL INFORMATION.
5. Protective characteristics
Protective construction
IEC
IP60
IP64
34
COM
Standard type
–
Terminal mold type
(Epoxy-sealed terminal type)
N.O.
N.C.
Standard type
ML (AZ7)
DIMENSIONS
mm inch
• Short push plunger
• Push plunger
AZ7100
AZ7110
(P.T.) 2 max.
.079
23.3±0.3
.917±.012
12 dia.
.472
(P.T.) 2 max.
.079
23.3±0.3
.917±.012
7 dia.
.276
(O.P.)
(25) 30±0.8
(.984) 1.181±.031
16 dia.
.630
16 dia.
.630
(25)
(.984)
17±0.8
.669±.031
16.5 max.
.650
25.4±0.15
1 inch
54±0.2
2.126±.008
(O.P.)
44±1.2
1.732±.047
17±0.8
.669±.031
4.2±0.2 dia.
14.3
.563
12 dia.
.472
8 dia.
.315
21.4
.843
25.4±0.15
1 inch
54±0.2
2.126±.008
16.5 max.
.650
4.2±0.2 dia.
14.3
.563
21.4
.843
General tolerance: ±0.4 ±.016
• Hinge lever
• Roller lever
AZ7120
AZ7121
8.5±0.1
.335±.004
48.35±1.0
1.904±.039
(P.T.) 11.0 max.
.433
(P.T.) 13.5 max.
.531
63.5±1.0
2.500±.039
8.0
.315
12.5 dia.
.492
(O.P.)
40±1.9
1.575±.075
(O.P.)
25±2.0
.984±.079
17±0.8
.669±.031
17±0.8
.669±.031
16.5 max.
.650
25.4±0.15
1 inch
54±0.2
2.126±.008
14.3
.563
25.4±0.15
1 inch
54±0.2
2.126±.008
4.2±0.2 dia.
21.4
.843
• One-way roller lever
16.5 max.
.650
14.3
.563
4.2±0.2 dia.
21.4
.843
General tolerance: ±0.4 ±.016
• Hinge short lever
AZ7124
AZ7140
48.35±1.0
1.904±.039
OPERATING DIRECTION
UNOPERATING
DIRECTION
8.5±0.1
.335±.004
8.0
.315
S wi v e
a n gl e l
90
°
x
ma
12.5 dia.
.492
10
.394 (F.P.)
57±2.0
(O.P.) 2.244±.079
50±2.0
1.969±.079
39.2±1.0
1.543±.039
(P.T.) 8.5 max.
.335
(O.P.)
25±1.3
.984±.051
17±0.8
.669±.031
16.5 max.
.650
25.4±0.15
1 inch
54±0.2
2.126±.008
14.3
.563
17±0.8
.669±.031
4.2±0.2 dia.
21.4
.843
16.5 max.
.650
25.4±0.15
1 inch
54±0.2
2.126±.008
14.3
.563
4.2±0.2 dia.
21.4
.843
General tolerance: ±0.4 ±.016
35
ML (AZ7)
• Short roller lever
• One-way short roller lever
AZ7141
mm inch
AZ7144
30.2±1.0
1.189±.039
S wi v e
a n gl e l
8.0
.315
12.5 dia.
.492
10
(F.P.)
.394 55±1.6
2.165±.063
(O.P.)
50±1.6
1.969±.063
12.5 dia.
.492
(O.P.)
40±1.6
1.575±.063
17±0.8
.669±.031
17±0.8
.669±.031
25.4±0.15
1 inch
54±0.2
2.126±.008
16.5 max.
.650
14.3
.563
25.4±0.15
1 inch
54±0.2
2.126±.008
4.2±0.2 dia.
21.4
.843
• Panel mount push plunger
16.5 max.
.650
21.4
.843
General tolerance: ±0.4 ±.016
AZ7311
23.3±0.5
.917±.020
17
.669
23.3±0.5
.917±.020
(P.T.) 2 max.
.079
8 dia.
.315
M12(P=1.0)
2-panel mounting nut
Thickness 3.2 .126
Length of opposite side 17 .669
Teethed washer
(O.P.)
21.8±0.8
.858±.031
14.3
.563
12.5 dia.
.492
(O.P.)
33.3±1.2
1.311±.047
15.3
.602
(25)
(.984)
17±0.8
.669±.031
25.4±0.15
1 inch
54±0.2
2.126±.008
3.8
.150
(P.T.) 2 max.
.079
(25)
(.984)
16.5 max.
.650
4.2±0.2 dia.
14.3
.563
• Panel mount roller planger
AZ7310
M12(P=1.0)
2-panel mounting nut
Thickness 3.2 .126
Length of opposite side 17 .669
Teethed washer
8.0
.315
90
°
(P.T.) 6.5 max.
.256
30.2±1.0
1.189±.039
UNOPERATING
DIRECTION
OPERATING DIRECTION
x
ma
17±0.8
.669±.031
4.2±0.2 dia.
21.4
.843
• Panel mount cross roller planger
16.5 max.
.650
25.4±0.15
1 inch
54±0.2
2.126±.008
14.3
.563
4.2±0.2 dia.
21.4
.843
General tolerance: ±0.4 ±.016
• Flexible rod
Total travel (36)
(1.417)
Pretravel (25)
(.984)
23.3
.917
24.5
.965
(Range of
operating
position)
AZ7312
23.3±0.5
.917±.020
M12(P=1.0)
2-panel mounting nut
Thickness 3.2 .126
Length of opposite side 17 .669
Teethed washer
(P.T.) 2 max.
.079
12.5 dia.3.8
.492 dia..150
107.5±1.5
4.232±.059
(O.P.)
33.3±1.2
1.311±.047
15.3
.602
17.5
.689
24
.945
(25)
(.984)
17±0.8
.669±.031
17±0.8
.669±.031
16.5 max.
.650
36
25.4±0.15
1 inch
54±0.2
2.126±.008
14.3
.563
16 dia.
.630
4.2±0.2 dia.
21.4
.843
AZ7166
16.5 max.
.650
25.4±0.15
1 inch
54±0.2
2.126±.008
14.3
.563
4.2±0.2 dia.
21.4
.843
General tolerance: ±0.4 ±.016
ML (AZ7)
Terminal Mold Type (Epoxy-Sealed Terminal Type)
The waterproof type (IP64) has its terminals sealed with epoxy resin.
1. Type of product
All the standard type have this epoxy-sealed
terminal types.
2. Appearance
The dimensions are the same as
those of the standard type.
The cord outlet is located either at
the N.C. or COM side.
The cord is 1 m 3.281ft. long.
Epoxy resin filled up for reliable watertightness
and heat resistance.
3-core vinyl cabtire cable
Cord outlet direction: N.C.
Cord outlet direction: COM
COM terminal
N.O. terminal
N.C. terminal
• Cord specifications
Type
Cord length
Lead colors
Vinyl cabtire cable (VCT)(3 × 1.25mm2)
1m 3.281ft.
Black: COM
Red: N.C.
White: N.O.
CAUTIONS
1. Ambient conditions
1) When the switch is to be used in
places where oil or is abundant, bore a
drain hole in the bottom of the terminal
cover.
2) Avoid places where highly acid or
alkaline fluids are used or high temperatures prevail.
3) This model uses silver terminals.
Therefore, if used at relatively low frequencies for long periods of time, or if
used with very small loads, the oxidization that forms on the contact surfaces
will not wear away and eventually cause
improper contact. For such applications,
use limit switches with gold/metal contacts (e.g. VL limit switches) or ones
meant for small loads (e.g. HL limit
switches).
4) This switch is not designed for underwater use. Do not use the unit underwater.
5) To improve reliability during actual
use, it is recommended that the operation be checked under installation conditions.
6) 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.
7) 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.
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.
2.Mounting and wiring
1) Remove the terminal cover with a v
driver. Insert the lead wire through the
knock-out of the terminal cover.
(The terminal cover of the epoxy-sealed
terminal type is filled with resin. It cannot
be removed.)
Standard type
2) Connect the lead wire to the terminal.
When connecting the terminals with the
fasten lug, those with the insulation
sleeve are recommended.
Tightening torque: 1.18 to 1.47 N·m {12
to 15 kg·cm}
3) The terminal cover can be mounted in
both directions.
• In this case, fasten the terminal cover in
the opposite direction.
N.C.
COM
• Side mounting
To mount onto a side, use M4 screws
with washers and secure it firmly. The
tightening torque should be 1.18 to 1.47
N·m (12 to 15 kg·cm).
• Panel mounting
(panel mount plunger type)
When installing the panel mounting type
onto a panel, the tightening torque for
the hex. nut should be 7.84 N·m (80
kg·cm).
• For terminal mold types (epoxy-sealed
terminal types), there are two types by
the cord outlet direction; N.C. side and
COM side.
3. Flexible rod
1) Put the detective object to the tip of
plastic part.
2) Avoid pushing the tip of actuating
spring in the direction of axis. In the
places of oil or water splashes and much
dust area, use the limit switch with keeping the actuating spring in the vertical
direction.
37
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