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UL
pending
CSA
pending
LONG LIFE RELAY
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 A to 1 A * Higher sticking resistance to inrush current * Stable contact resistance from initial stage throughout life
SPECIFICATIONS
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 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 m 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 10A 109 106 (at 1 cps.) 3x106 (at 2 cps.) 5x106 (at 5 cps.) 107 (at 25 cps.) 5x107 (at 50 cps.) 108 (at 100 cps.)
Characteristics (at 25C 77F)
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 Functional*5 Destructive*6 Functional*7 Destructive 500 cps. (mechanical) Min. 1000 M 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. 35C at 0.5 W operating power Max. 65C 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 -55C to +65C*10 -67F to +149F 5 to 85% R.H. Approx. 7 g .25 oz
Rating (resistive)
Vibration resistance
Expected life (min. operations)
Conditions for opera- Ambient tion, transport and temp. storage*9 (Not freezing and condensing Humidity at low temperature) Unit weight Remarks
* *1 *2 *3 *4 *5 *6 *7 *8
Coil (polarized) (at 25C 77F)
Minimum operting power 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
*9 *10
Nominal operating power
Specifications will vary with foreign standards certification ratings. Measurement at same location as "Initial breakdown voltage" section Min. 500M 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: 10s Half-wave pulse of sine wave: 6ms Detection time: 10s 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 90C 194F for single side stable, and 105C 221F for latching relays. See Reference Data for determination of coil voltage versus temperature.
112
NR
TYPICAL APPLICATIONS
Telecommunications equipment, alarm devices, machine tools, NC machines, automatic warehouse control, conveyors, air-conditioners, pressing machines, textile 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. NRH L2 D 12V
Types of case H: Sealed S: Magnetically sealed
Operating function Nil: Single side stable L: 1 coil latching L2: 2 coil latching
Coil voltage (DC) 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 25C 77F)
Single side stable (NR-SD)
Nominal coil voltage, V DC 5 6 12 24 42 Pick-up voltage, V DC (max.) 3.5 4.7 9.3 16 28 Drop-out voltage V DC (min.) 0.5 0.6 1.2 2.4 4.2 Maximum allowable voltage, V DC (40C 104F) 13 14 28 42 85 Coil resistance, (10%) 170 220 890 2,000 8,000 Nominal operating power, mW 147 164 162 288 221 Inductance, Henrys 0.050 0.075 0.3 0.66 2.7
1 coil latching (NR-SLD)
Nominal coil voltage, V DC 5 6 12 24 42 Pick-up voltage, V DC (max.) 3.5 4.3 8.0 17 23 Maximum allowable voltage, V DC (40C 104F) 18 20 30 75 110 Coil resistance, (10%) 340 450 1,500 6,000 12,000 Nominal operating power, mW 74 80 96 96 147 Inductance, Henrys 0.12 0.16 0.66 2.4 3.9
2 coil latching (NR-SL2D)
Nominal coil voltage, V DC 5 6 12 24 42 Pick-up voltage, V DC (max.) 3.5 4.3 8.0 17.0 23.0 Maximum allowable voltage, V DC (40C 104F) 13.0 14.0 26.0 50.0 75.0 Coil resistance, (10%) Set coil Reset coil 170 170 225 225 650 650 2,700 2,700 5,500 5,500 Nominal operating power, mW 147 160 230 213 321 Inductance, Henrys 0.024 0.04 0.14 0.35 0.8
(Note) Maximum allowable operating power: 1000 mW at 25C 77F.
DIMENSIONS
20 .787 10 .394 2.54 .100 Ground terminal 5 10 .394 3.5 .138 2.54 5.1 5.1 5.1 .100 .201 .201 .201 5.1 .201 6 7
mm inch
Terminal dimensions (Except soldering)
Terminal No. 1, 7 Thickness Width 0.5 0.6 .020 .024 0.3 0.7 .012 .028 0.5 DIA. .020 DIA.
3 .118
4 3 2.54 .100 2 1.3 DIA. .051 DIA. 1
4 2, 3, 5, 6, ground terminal
Soldering: 0.3 .012 max.
General tolerance: 0.5 .020
Tolerance: 0.2 .008
113
NR
DIFFERENCES BETWEEN NR RELAYS AND REED RELAYS
NR relays Reed relays
Structure
"Getter" holes are formed on both pole shoes to obtain uniform contact resistance throughout life. Film-forming phenomena on contacts is thus fully prevented.
Contact arrangement Contact capacity Operating function "Getter" hole
1 Form C 20 W (high contact pressure) Single side stable Latching Yes
1 Form A or 1 Form B 5 to 15 W Single side stable No
REFERENCE DATA
1.-(1) Contact reliability
Test sample: NR-SD-24V 54 pcs. Circuits: (A) Following figure with diode (B) Following figure without diode
Start Stop R0 24 V DC R54 R2 R1 R2 R3 R52 R53 R53 R54
1.-(2) Contact reliability TEST CONDITION
Sample: NR-SD-24V, 10 pcs. Contact voltage: 100 mV Contact current: 10A Cycle rate: 50 cps. Detection level: 100 Testing operation: 3x107 m = 1.9 = 2.5x107 = 4.7x107 95% reliability limit: 1.15x107 (Mean time between failure)
F(t)(%) 99.9 99.0 95.0 70.0 50.0 30.0 10.0 5.0 2.0 1.0 0.5 0.2 0.1 1 No. of operations, x10
7
2. Coil temperature rise (under saturated condition)
100 Coil temperature rise, C 90 80 70 60 50 40 30 20 10 250 500 750 1,000 1,250 Plastic sealed type Magnetically sealed type
R0 R1
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: 60 = 2.5 x 10-8 times
Operating power, mW
5 10 (WEIBULL)
3.-(1) Operate time including bounce time (Single side stable)
3.0 2.5 Operate time, ms
3.-(2) Operate time including bounce time (2 coil latching)
3.0 2.5 Operate time, ms 2.0 1.5 1.0 0.5 0 Max. x Min. 180
4. Release time including bounce time (Single side stable)
3.0 2.5 2.0 1.5 1.0 0.5 x Min. 0
2.0 1.5 1.0 0.5 0 Max. x Min.
Release time, ms
Max.
60
100
140
180
220
60
100
140
220
60
100
140
180
220
Coil applied voltage, %V
Coil applied voltage, %V
Coil applied voltage, %V
114
NR
5.-(1) Leaving at high temperature (Change of pick-up and drop-out voltages)
Tested sample: NR-SD-24V, 30 pcs. Condition: Deenergized leaving at 90C 194F (constant temperature)
20 18 16 Voltage, V Pick-up voltage 14 12 10 8 6 4 2 500 1,000 Time, hr Min. 100 1,000 Time, hr 10,000 Drop out voltage Max. x Max. x Min.
5.-(2) Leaving at high temperature (Change of contact resistance)
Tested sample: NR-SD-24V, 30 pcs. Condition: Deenergized leaving at 90C 194F (constant temperature)
1,000 Contact resistance, m 500 N.C. side contact N.O. side contact
6. High frequency characteristics Tested sample: NR-SD-24V Tested condition:
SG(Signal generator) A B N.O. N.C. 50
50
Max. 100 50 Max. Isolation, dB Min. Min. -100 -50
Isolation loss between A and B is measured.
1,500
5
10
50
100
Frequency, MHz
7. Contact sticking resistance TEST CONDITION
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
8. Distribution of contact resistance TEST RESULT
No occurance of sticking was observed. Contact resistance: Fig. 1 NR-SD-24V: 29 m to 30.4 m
Contact resistance m 50 100 Quantity 40 30 20 10 100 1,000 Energization time, Hr Fig. 1 10 50 Max. x Min.
Tested sample: NR-SD-24V (WG type) 105 pcs.
x = 24.2 m 3 = 9.27 m
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%.
10
20
30
40
50
Contact resistance, m
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.-(1) Mechanical life (Change of pick-up and drop-out V)
Tested Sample: NR-SD-24V, 10 pcs. Operation frequency: 500 cps
Pick-up/drop-out Voltage, V
180 Rate of change, % 160 140 120 100 80 60 40 20
Rate of change, %
Drop-out voltage
180 160 140 120 100 80 60 40 20 Pick-up voltage
15
Pick-up Voltage Max.
Pick-up voltage
10
Min.
Drop-out Voltage 5 Max. Min.
-40 -20 0 20 40 60 80 100 -30 -10 10 30 50 70 90 Ambient temperature, C
-40 -20 0 20 40 60 80 100 -30 -10 10 30 50 70 90 Ambient temperature, C
1,000
10,000
100,000
No. of operations, x104
10.-(2) Mechanical life (Change of contact resistance)
Tested Sample: NR-SD-24V, 10 pcs. Operation frequency: 500 cps
90 Contact resistance, m 80 70 60 50 40 30 20 10 1,000 10,000 100,000 Min. Max. N.C. side N.O. side
11.-(1) Electrical life (1 A 20 V DC resistive load)
Tested sample: NR-SD-24V, 10 pcs.
F(t)(%) 99.9 99.0 95.0 70.0 50.0 30.0 10.0 5.0 2.0 1.0 0.5 0.2 0.1 : 1.85x106 : 1.65x106 : 5.64x104 (Weibull probability paper) 1 5 10 No. of operations, x104
11.-(2) Electrical life
Tested Sample: NR-SD-24V, 10 pcs. Load: 60 mA 24 V DC resistive load Frequency: 50 cps
N.C. side N.O. side 150
Contact resistance, m
100
50
100
1,000
1,0000
No. of operations, x104
No. of operations, x104
115
NR
11.-(3) Electrical life
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
1,000 Contact resistance, m Pick-up/drop-out voltage, V 24 V DC L1 Pick-up voltage 12 Max. x Min. Contact resistance, m L1~L6: HP2-DC24V x 6 pcs. in parallel Diode protector provided L2 L3 L4 L5 L6
11.-(4)Electrical life (327 mA 24 V DC relay coil load)
Tested sample: NR-SD-24V, 5 pcs. Condition: HP2-DC24x6 pcs. in parallel, diode protector provided
NR relay contact
16
100
Max.
100 80 60 40 20
8 Drop-out voltage 4 Max. x Min. 100 200 300
Max. x Min. 100 200 300
Min. 1,000 10,000
4
0
No. of operations, x10
No. of operations, x104
No. of operations, x104
12. Thermal electro motive force
Tested Sample: NR-SD-12V, 5 pcs. Coil applied V: 12 V DC Ambient atmosphere: 25C 77F, 60% RH
200
13. High temperature test TEST CONDITION
Tested Sample: NR-SD-24V, 30 pcs. Ambient temperature: 80C 176F Humidity: less than 50% R.H. Exposure time: 2,000 hours with relays deenergized.
14. Influence of adjacent mounting
mm inch
TEST RESULT
Thermal EMF, V
Contact resistance: Fig. 1 All samples were measured less than 100 m in contact resistance throughout this test.
100
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
Contact resistance, m
N.C. N.O. Contact resistance, m
500 N.C. N.O.
2
4
6
8
10 Hour
12
14
16
100 80 60 40 20 10 Max. Min. 1,000 2,000 100 Exposure time, hr Max.
100
Max. Max. Mean value of N.O. Mean value of N.C. Min. Min. 1 2 5 10 15
50
20
No. of operations, x106
APPLICATION HINTS
Contact protection circuit When using NR relays in inductive load circuits, a contact protection circuit is recommended. Examples: CR
S
CR
Relay contact
S
Diode
S
r r c L c L L
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.
Can be used for both AC and DC circuits. Use 500 to 1000 ohms for r and 0.1 F to 0.2 F 200 V for c in a general 12 to 24 V load circuit.
For DC circuits only.
116
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 F + 1k or diode 0.2 F + 1k or diode 0.1 F + 1k or diode 0.1 F + 1k or diode 0.2 F + 1k 0.1 F + 1k or varistor 0.1 F + 1k 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. 3x107 3x107 3x107 2x107 3x107 2x107 2x107
(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. Ripple factor Coils should be operated on pure DC. Rectified AC may cause changes in the
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.
coil bias voltage
coil
pick-up/drop-out characteristics because of the ripple factor. Use of a capacitor in
Pulsating component
the circuit is recommended to keep the ripple factor below 5%.
To calculate the ripple factor Ripple factor (%) = E max. - E min. x 100% E mean
R : relay
R
E min. E max. E mean capacitor (ripple filter)
DC component
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 ) 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
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
5
2
6
3
1 coil bistable type
2 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 F: (24 V type).
C
(V)
Specified Pick - up voltage
NR relay coil SW t more than 2 ms
NR relay contact
C
5 6
2 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
SW
Coil voltage wave form
V
NR relay contact NR relay coil
T (Time)
NR relay coil
coils and decreases contact pressure at N.O. side even if the transistor or UJT are in OFF condition. As a result, characteris-
tics of relays may be harmed. Design your circuits in principle to make such residual voltage zero.
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).
Load
COM
Load separation
Load
N.C. COM N.O. N.O. N.C.
Load Fig. 1
118
NR
ACCESSORIES
PC board terminal sockets (with hold-down clip)
PC board pattern (Copper-side view)
10 .394 1 2 7 6 20.9 .823 E 3 5 4 4.4 .173 0.3 .012 9.9 .390 6.15 .242 5.0 .197 2.4 .094 2.7 .106 7.4 .291 8-1.5 to 1.6 dia. 8-.059 to .063 dia.
mm inch
R-PS
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, (c) Copyright Matsushita Electric Works, 119 Ltd.
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