LONG LIFE RELAY
UL
CSA
pending
pending
NR-RELAYS
FEATURES
20
.787
10
.394
10
.394
mm inch
• Sealed construction for automatic wave soldering and cleaning
• Latching types available
• High sensitivity — TTL direct drive possible
• High speed — Up to 500 cycle/sec. operations
• Wide switching range and high welding resistance
Gold cobalt (AuCo) contact permits
• Wider switching range from low level up to high current: 10 µA to 1 A
• Higher sticking resistance to inrush current
• Stable contact resistance from initial stage throughout life
SPECIFICATIONS
Characteristics (at 25°C 77°F)
Contact
Arrangement
Initial contact resistance, max.
(By voltage drop 6 V DC 1 A)
Initial contact pressure
Contact material
Sealed type
ContactMagnetically
Contact
sealed type
Sealed type
N.O.
Magnetically
Electrostatic contact-coil
sealed type
capacitance
Sealed type
N.C.
contact-coil Magnetically
sealed type
Nominal switching capacity
Rating
(resistive)
Expected
life (min.
operations)
Max. switching power
Max. switching voltage
Max. switching current
Min. switching power
Mechanical (at 500 cps.)
1 A 20 V DC/
0.3 A 110 V AC
0.5 A 30 V DC/
0.1 A 110 V AC
0.25 A 30 V DC/
0.25 A 30 V AC
Electrical
(resistive)
0.2 A 24 V DC/
0.2 A 24 V AC
0.1 A 12 V DC/
0.1 A 12 V AC
0.1 A 9 V DC/
0.1 A 9 V AC
1 Form C
60 mΩ
Approx. 5 g .18 oz
Gold cobalt
3 pF
4 pF
4 pF
5 pF
5 pF
6 pF
1A 20 VDC,
0.3A 110 VAC
33 VA, 20 W
110 V AC, 30 V DC
AC 0.3 A, DC 1 A
Approx. 100 mV 10µA
109
106 (at 1 cps.)
3×106 (at 2 cps.)
5×106 (at 5 cps.)
107 (at 25 cps.)
5×107 (at 50 cps.)
108 (at 100 cps.)
Coil (polarized) (at 25°C 77°F)
Minimum operting power
Nominal operating power
112
Single side stable
1 coil latching
2 coil latching
Single side stable
1 coil latching
2 coil latching
72 to 133 mW
41 to 45 mW
72 to 107 mW
147 to 300 mW
74 to 153 mW
147 to 331 mW
Max. operating speed
Initial insulation resistance*1
Between live parts
and ground
Initial
Between open
breakdown
contact
voltage*3
Between contact
and coil
Operate time*4
(at nominal voltage)
Release time (without diode)*4
(at nominal voltage)
Contact Single side stable
bounce
1-coil /2-coil latching
time
Temperature rise
Shock resistance
Vibration
resistance
Functional*5
Destructive*6
Functional*7
Destructive
Conditions for opera- Ambient
tion, transport and
temp.
storage*9 (Not freezing and condensing
Humidity
at low temperature)
Unit weight
500 cps. (mechanical)
Min. 1000 MΩ at 500 V DC*2
1,000 Vrms
350 Vrms (500 V DC)
1,000 Vrms
Max. 3 ms (Approx. 1 ms)
Max. 2 ms (Approx. 0.5 ms)
Approx. 0.5 ms
Approx. 0.3 ms
Max. 35°C at 0.5 W operating power
Max. 65°C at 1 W operating power
Min. 980 m/s2 {100 G}
Min. 980 m/s2 {100 G}
98 m/s2 {10 G}, 10 to 55 Hz
at double amplitude of 1.6 mm*8
117.6 m/s2 {12 G}, 10 to 55 Hz
at double amplitude of 2 mm
–55°C to +65°C*10
–67°F to +149°F
5 to 85% R.H.
Approx. 7 g .25 oz
Remarks
*
*1
*2
*3
*4
*5
*6
*7
*8
*9
*10
Specifications will vary with foreign standards certification ratings.
Measurement at same location as "Initial breakdown voltage" section
Min. 500MΩ at 100 V DC between coils of 2 coil latching type
Detection current: 10mA, Except for between coils of 2 coil latching type
Excluding contact bounce time
Half-wave pulse of sine wave: 6ms; detection time: 10µs
Half-wave pulse of sine wave: 6ms
Detection time: 10µs
Although NR relays are rated at 10 G/55 cps. vibration resistance, they will withstand up to 60 G/2,000 cps., provided they receive additional support such as
anchoring to the PC board with epoxy resin.
Refer to 5. Conditions for operation, transport and storage mentioned in
AMBIENT ENVIRONMENT (Page 61)
Total temperature (ambient temperature plus temperature rise in coil) should not
exceed 90°C 194°F for single side stable, and 105°C 221°F for latching relays.
See Reference Data for determination of coil voltage versus temperature.
NR
TYPICAL APPLICATIONS
Telecommunications equipment, alarm
devices, machine tools, NC machines, automatic warehouse control, conveyors,
air-conditioners, pressing machines, tex-
tile machinery, elevators, control panels,
pin-board programmers, parking meters,
industrial robots, detectors, annunciators,
optical instruments, business machines,
time recorders, cash registers, copiers,
vending machines, medical equipment.
ORDERING INFORMATION
EX. NR-
H
L2
D
12V
Types of case
Operating function
Coil voltage (DC)
H: Sealed
S: Magnetically sealed
Nil: Single side stable
L: 1 coil latching
L2: 2 coil latching
5, 6, 12, 24, 42 V
(Notes) 1. Power types and 1 Form A types are available on request.
(Notes) 2. For UL/CSA recognized types, delete “N” at head portion of part No. and add suffix UL/CSA, when ordering. Ex. RSD-12V UL/CSA
(Notes) 3. Standard packing Carton: 50 pcs., Case: 500 pcs.
TYPES AND COIL DATA (at 25°C 77°F)
Single side stable (NR-SD)
Nominal coil
voltage, V DC
Pick-up voltage,
V DC (max.)
Drop-out voltage
V DC (min.)
5
6
12
24
42
3.5
4.7
9.3
16
28
0.5
0.6
1.2
2.4
4.2
Maximum
allowable voltage,
V DC (40°C 104°F)
13
14
28
42
85
Coil resistance,
Ω (±10%)
Nominal operating
power, mW
Inductance,
Henrys
170
220
890
2,000
8,000
147
164
162
288
221
0.050
0.075
0.3
0.66
2.7
1 coil latching (NR-SLD)
Nominal coil voltage,
V DC
Pick-up voltage,
V DC (max.)
Maximum allowable
voltage,
V DC (40°C 104°F)
Coil resistance,
Ω (±10%)
Nominal operating
power, mW
Inductance,
Henrys
5
6
12
24
42
3.5
4.3
8.0
17
23
18
20
30
75
110
340
450
1,500
6,000
12,000
74
80
96
96
147
0.12
0.16
0.66
2.4
3.9
Nominal coil voltage,
V DC
Pick-up voltage,
V DC (max.)
Maximum allowable
voltage,
V DC (40°C 104°F)
Nominal operating
power, mW
Inductance,
Henrys
5
6
12
24
42
3.5
4.3
8.0
17.0
23.0
13.0
14.0
26.0
50.0
75.0
Coil resistance,
Ω (±10%)
Set coil
Reset coil
170
170
225
225
650
650
2,700
2,700
5,500
5,500
147
160
230
213
321
0.024
0.04
0.14
0.35
0.8
2 coil latching (NR-SL2D)
(Note) Maximum allowable operating power: 1000 mW at 25°C 77°F.
DIMENSIONS
mm inch
20
.787
10
.394
5
10
.394
2.54
.100
3
.118
2.54 5.1 5.1 5.1
.100 .201 .201 .201
5.1
.201
6
7
Terminal No.
1, 7
4
3
2.54
3.5
.138
Terminal dimensions (Except soldering)
Ground terminal
.100
2
1.3 DIA.
.051 DIA.
1
4
2, 3, 5, 6,
ground terminal
Thickness
Width
0.5
0.6
.020
.024
0.3
0.7
.012
.028
0.5 DIA.
.020 DIA.
Soldering: 0.3 .012 max.
General tolerance: ±0.5 ±.020
Tolerance: ±0.2 ±.008
113
NR
DIFFERENCES BETWEEN NR RELAYS AND REED RELAYS
"Getter" holes are formed on both pole
shoes to obtain uniform contact resistance throughout life. Film-forming phenomena on contacts is thus fully
prevented.
NR relays
Reed relays
1 Form C
20 W (high contact pressure)
Single side stable
Latching
Yes
1 Form A or 1 Form B
5 to 15 W
Structure
Contact arrangement
Contact capacity
Operating function
"Getter" hole
Single side stable
No
REFERENCE DATA
1.-(2) Contact reliability
TEST CONDITION
Test sample: NR-SD-24V 54 pcs.
Circuits: (A) Following figure with diode
(B) Following figure without diode
Stop
Start
R0
24 V DC
R54
R0 R1
R1
R2
R2
R52
R3
R53
R53
R54
Item to be checked: Detect with the circuit stopped
Circuits:
(A) Diode provided: The circuit does not stop throughout 100 million times.
(B) Diode not provided: λ60 = 2.5 × 10-8 times
2. Coil temperature rise
(under saturated condition)
Sample: NR-SD-24V, 10 pcs.
Contact voltage: 100 mV
Contact current: 10µA
Cycle rate: 50 cps.
Detection level: 100 Ω
Testing operation: 3×107
m = 1.9
σ = 2.5×107
µ = 4.7×107
95% reliability limit: 1.15×107
(Mean time between failure)
100
Coil temperature rise, °C
1.-(1) Contact reliability
F(t)(%)
99.9
99.0
95.0
90
80
70
60
50
Magnetically
sealed type
40
Plastic
sealed type
30
20
10
250
70.0
50.0
30.0
500
750
1,000 1,250
Operating power, mW
10.0
5.0
2.0
1.0
0.5
0.2
0.1
1
No. of operations, ×10
5
10
(WEIBULL)
3.-(2) Operate time including bounce time
(2 coil latching)
4. Release time including bounce time
(Single side stable)
3.0
3.0
2.5
2.5
2.5
2.0
1.5
Max.
1.0
Release time, ms
3.0
Operate time, ms
Operate time, ms
3.-(1) Operate time including bounce time
(Single side stable)
7
2.0
1.5
2.0
1.5
1.0
1.0
Max.
x
Min.
0.5
0
60
100
140
180
0.5
220
Coil applied voltage, %V
114
Max.
0
60
100
140
x
Min.
180
0.5
x
Min.
220
Coil applied voltage, %V
0
60
100
140
180
220
Coil applied voltage, %V
NR
5.-(1) Leaving at high temperature
(Change of pick-up and drop-out voltages)
5.-(2) Leaving at high temperature
(Change of contact resistance)
Tested sample: NR-SD-24V, 30 pcs.
Condition: Deenergized leaving at 90°C 194°F
(constant temperature)
Tested sample: NR-SD-24V, 30 pcs.
Condition: Deenergized leaving at 90°C 194°F
(constant temperature)
SG(Signal generator)
1,000
20
B
N.O.
Pick-up voltage
Max.
14
12
x
10
Min.
8
Drop out voltage
Max.
N.C. side contact
N.O. side contact
N.C.
100
Min.
Min.
4
Min.
1,000
Time, hr
100
1,500
1,000
–100
–50
5
10,000
7. Contact sticking resistance
TEST CONDITION
10
50
100
Frequency, MHz
Time, hr
8. Distribution of contact resistance
TEST RESULT
The purpose of this test was to confirm contact sticking resistance and contact stability against coil ripples.
Tested Sample: NR-SD-24V, 10 pcs.
Test method: Following coil ripples were applied.
Test period: 500 hours
24 V DC
100 Hz
7 V DC
Tested sample: NR-SD-24V (WG type) 105 pcs.
No occurance of sticking was observed.
Contact resistance: Fig. 1
NR-SD-24V: 29 mΩ to 30.4 mΩ
Contact resistance mΩ
500
50Ω
Max.
50
x
2
50Ω
Isolation loss between
A and B is measured.
Max.
x = 24.2 mΩ
3σ = 9.27 mΩ
50
100
50
Max.
x
Min.
Quantity
6
500
Isolation, dB
16
Contact resistance, mΩ
A
18
Voltage, V
6. High frequency characteristics
Tested sample: NR-SD-24V
Tested condition:
40
30
20
10
100
1,000
Energization time, Hr Fig. 1
10
In actual application, above coil ripples should be
avoided and use of a capacitor in the circuit is recommended to keep the ripple factor below 5%.
9.-(1) Rate of change in pick-up and drop-out
voltage (Single side stable)
9.-(2) Rate of change in pick-up voltage
(2 coil latching)
10
20
30
40
50
Contact resistance, mΩ
10.-(1) Mechanical life
(Change of pick-up and drop-out V)
Tested Sample: NR-SD-24V, 10 pcs.
Operation frequency: 500 cps
140
120
Pick-up
voltage
100
80
160
140
120
100
Pick-up
voltage
80
60
60
40
40
20
20
–40 –20 0
20 40 60 80 100
–30 –10 10 30 50 70 90
Ambient temperature, °C
Tested Sample: NR-SD-24V, 10 pcs.
Operation frequency: 500 cps
Tested sample: NR-SD-24V, 10 pcs.
10.0
5.0
50
40
Max.
30
Min.
20
10
2.0
1.0
0.5
0.2
0.1
1,000
10,000
No. of operations, ×104
100,000
Drop-out Voltage
5
Max.
1,000
η: 1.85×106
µ: 1.65×106
σ: 5.64×104
(Weibull probability paper)
1
10,000
100,000
No. of operations, ×104
Contact resistance, mΩ
Contact resistance, mΩ
60
Min.
Tested Sample: NR-SD-24V, 10 pcs.
Load: 60 mA 24 V DC resistive load
Frequency: 50 cps
70.0
50.0
30.0
70
Max.
11.-(2) Electrical life
F(t)(%)
99.9
99.0
95.0
N.C. side
N.O. side
Pick-up Voltage
10
–40 –20 0
20 40 60 80 100
–30 –10 10 30 50 70 90
Ambient temperature, °C
11.-(1) Electrical life
(1 A 20 V DC resistive load)
80
15
Min.
10.-(2) Mechanical life
(Change of contact resistance)
90
Pick-up/drop-out Voltage, V
180
Drop-out
voltage
160
Rate of change, %
Rate of change, %
180
5
No. of operations, ×104
10
N.C. side
N.O. side
150
100
50
100
1,000
1,0000
No. of operations, ×104
115
NR
11.-(3) Electrical life
11.-(4)Electrical life
(327 mA 24 V DC relay coil load)
Tested Sample: NR-SD-12V, 10 pcs.
Load: 54 mA 12 V DC inductive load
with diode protection
(4 relay coils in parallel of NR-SD-12V)
Frequency: 50 cps
Tested sample: NR-SD-24V, 5 pcs.
Condition: HP2-DC24×6 pcs. in parallel,
diode protector provided
NR relay contact
Max.
24 V DC
16
L1
12
Max.
x
Min.
8
Drop-out voltage
Max.
x
Min.
4
Min.
1,000
0
10,000
No. of operations, ×10
100
4
200
40
Max.
x
20
Min.
200
300
14. Influence of adjacent mounting
Contact resistance: Fig. 1
All samples were measured less than
100 mΩ in contact resistance throughout this test.
mm inch
Distance
0
5
10
15
(0) (.197) (.394) (.591)
Type
Magnetically
±5% ±1%
0
0
shielded type
Sealed type
— ±10% ±6% ±2%
15. Resistive load test
TEST CONDITION
Tested Sample: NR-SD-24V, 10 pcs.
Load: 1 A 20 V DC Resistive
Cycle rate: 1.4 cps.
Contact resistance in life test
6
8
10
12
14
16
Hour
500
N.C.
N.O.
100
80
Max.
60
40
Max.
Min.
20
10
1,000 2,000
100
Exposure time, hr
Contact resistance, mΩ
4
Contact resistance, mΩ
100
2
N.C.
N.O.
Max.
100
Max.
Mean value
of N.O.
Mean value
of N.C.
Min.
Min.
50
20
1
2
5
10
15
No. of operations, ×106
APPLICATION HINTS
Contact protection circuit
When using NR relays in inductive load circuits, a contact protection circuit is recommended.
Examples:
CR
CR
Relay contact
S
Diode
S
S
r
r
c
L
L
L
c
L : Inductive load
1. r = more than 20 to 30 ohms
2. In an AC circuit impedance of L is to be
somewhat smaller than impedance of r
and c.
116
L6
No. of operations, ×104
TEST RESULT
Thermal EMF, µV
L5
60
100
Tested Sample: NR-SD-24V, 30 pcs.
Ambient temperature: 80°C 176°F
Humidity: less than 50% R.H.
Exposure time: 2,000 hours with relays deenergized.
200
L4
80
300
13. High temperature test
TEST CONDITION
Tested Sample: NR-SD-12V, 5 pcs.
Coil applied V: 12 V DC
Ambient atmosphere: 25°C 77°F, 60% RH
L3
L1~L6: HP2-DC24V × 6 pcs. in parallel
Diode protector provided
100
No. of operations, ×104
12. Thermal electro motive force
L2
Pick-up voltage
Contact resistance, mΩ
100
Pick-up/drop-out voltage, V
Contact resistance, mΩ
1,000
Can be used for both AC and DC circuits.
Use 500 to 1000 ohms for r and 0.1 µF to
0.2 µF 200 V for c in a general 12 to 24 V
load circuit.
For DC circuits only.
NR
The following is life data under our HP2 relay load.
Contact voltage
6 V DC
12 V DC
24 V DC
100 V DC
24 V DC
100 V DC
200 V DC
Contact current
232 mA
106 mA
54 mA
15 mA
80 mA
20 mA
10 mA
Contact protection circuit
0.2 µF + 1kΩ or diode
0.2 µF + 1kΩ or diode
0.1 µF + 1kΩ or diode
0.1 µF + 1kΩ or diode
0.2 µF + 1kΩ
0.1 µF + 1kΩ or varistor
0.1 µF + 1kΩ
Operating speed
2 op./s
2 op./s
2 op./s
2 op./s
2 op./s
2 op./s
2 op./s
Expected life, min. op.
3×107
3×107
3×107
2×107
3×107
2×107
2×107
(Notes)
1. When inrush current occurs in the capacitor load circuit or incandescent lamp load circuit, reduce it to less than 5 A. Electrical life of "AuCo" contact
types is 10,000 operations in a 5 A inrush current circuit.
2. When 5 A to 10 A inrush current occurs in the capacitor load circuit or incandescent lamp load circuit, the use of power types is recommended.
2 coil latching types
A) The circuit at right is recommended
when using one coil for latching and the
other coil for reset.
NR relays are sensitive enough to be operated by the discharge of energy accumulated in the inner-coil capacitance. The
use of a diode of over 200 V breakdown
will prevent misoperation from this source.
In order to maintain the insulation between the two coils, connection of the terminal No. 3 and No. 6 or the terminal No.
2 and No. 5 is recommended, as shown in
the right figure.
Rectifiers should be inserted in this circuit
when the nominal coil voltage of the NR
relay is more than 24 V DC.
B) No damage will occur to the coil of either the one or two coil latching types
even if the operating voltage is as much
as 2 or 3 times the nominal coil voltage.
C) If separate pulses are applied to each
coil of the 2 coil latching types, the first
pulse will operate when the pulses are of
equal voltage. When voltages differ the
higher voltage will cause operation provided the voltage difference is greater
than the measured pick-up voltage. Voltage difference on the coils will reduce
contact pressure proportionately.
Continuous bias voltage after an operating pulse lowers contact pressure and vibration resistance.
Ripple factor
Coils should be operated on pure DC.
Rectified AC may cause changes in the
pick-up/drop-out characteristics because
of the ripple factor. Use of a capacitor in
the circuit is recommended to keep the
ripple factor below 5%.
Pulsating component
coil
bias voltage
coil
To calculate the ripple factor
R : relay
Ripple factor (%) =
R
E min. E max. E mean
DC component
capacitor (ripple filter)
E max. – E min.
× 100%
E mean
E max. = max. value of pulsating component
E min. = min. value of pulsating component
E mean - average value DC component
When designing NR relay circuits
Care should be taken when designing relay circuits since the response of the relay
is so fast that bouncing or chattering from
conventional relays in the circuit may
cause false operation.
When using long lead wires
When long wires (as long as 100 m or
more) are to be used, the use of resistance (10 to 50 Ω) in series with the contact is required in order to eliminate the
effect of the possible inrush current due to
the stray capacitance existing between
the two wires or between the wire and
ground.
+
(Equivalent circuit)
Contact of NR relay
10 to 50 Ω
Lead wire
(100 to 300 m)
Energy accumulated in
static capacitance
117
NR
AC operation of latching relays
When using circuits such as those at the
right, avoid continued or extended latching or resetting power input.
Latching
switch
Reset
switch
Latching
switch
Reset
switch
2
5
6
1 coil bistable type
Capacitor discharge operation of latching types
When operating latching types by discharge of a capacitor, more reliable operation can be expected if the time to reach
pick-up voltage is greater than 2 ms at 5
to 10 µF: (24 V type).
3
2 coil bistable type
(V)
Specified
Pick - up voltage
NR relay
coil
C
SW
t
more than 2 ms
NR relay contact
C
5
2
6
3
C
Flicker circuit
Automatic coil circuit interruption
Misoperation may occur in self-operated
cutoff circuits such as shown at right. This
can be avoided by adding a resistor and
capacitor and increasing the pick-up voltage to above that specified.
In a timer circuit, step-pulse voltage from
PUT (Programmable Unijunction Transistor) or SBS (Silicon Bilateral Switch) is
recommended.
Residual voltage
When single side stable types or latching
types are driven by transistor or UJT, residual voltage is sometimes applied to the
Coil voltage wave form
SW
V
NR relay contact
NR relay coil
T
(Time)
coils and decreases contact pressure at
N.O. side even if the transistor or UJT are
in OFF condition. As a result, characteris-
Short circuit prevention between N.C. and N.O.
The separation of loads or insertion of a
resistor for circuit protection are recommended for the circuits where large current flows due to arcing. (See Fig. 1).
NR relay coil
tics of relays may be harmed. Design your
circuits in principle to make such residual
voltage zero.
Load separation
Load
N.C.
Load
COM
N.C.
COM
N.O.
N.O.
Load
Fig. 1
118
NR
ACCESSORIES
mm inch
PC board terminal sockets (with hold-down clip)
PC board pattern (Copper-side view)
10
.394
0.3
.012
1
7
2
6
9.9
.390
6.15
.242
20.9
.823
R-PS
8-1.5 to 1.6 dia.
8-.059 to .063 dia.
2.4
.094
2.7
.106
7.4
.291
E
3
5.0
.197
5
4.4
.173
4
Terminal width: 1.3 .051
Terminal thickness: 1.2 .047
General tolerance: ±0.5 ±.020
Tolerance: ±0.2 ±.008
For Cautions for Use, see Relay Technical Information (Page 48 to 76).
9/1/2000
All Rights Reserved, © Copyright Matsushita Electric Works, 119
Ltd.
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