NAIS SF2-DC12V, SF2-DC18V, SF2-DC21V, SF2-DC24V, SF2-DC36V Datasheet

SF

(SF3 pending) (SF3 pending)			(SF3 pending)

POLARISED, MONOSTABLE

SAFETY RELAY with SF-RELAYS

(mechanical linked) forced contacts operation

π	25.0
53.3±0.3	.984
2.098±.012	16.5±0.3
	.650±.012
		25.0
	53.3±0.3	.984
	2.098±.012	16.5±0.3
		.650±.012
53.3±0.3	33±0.3
	1.299±.012
2.098±.012

16.5±0.3

.650±.012

mm inch

FEATURES

•Forced operation contacts (2 Form A 2 Form B, 3 Form A 1 Form B)

N.O. and N.C. side contacts are connected through a card so that one interacts with the other in movement. In case of a contact welding, the other keeps a min. 0.5mm .020inch contact gap.

•Independent operation contacts

(4 Form A 4 Form B)

Each pair of contacts is free from the main armature and is independent from each other. So if a N.O. pair of contacts are welded, the other 3 N.O. contacts are not effected (operate properly) That

enables to plan a circuit to detect welding or go back to the beginning condition.

• Separated chamber structure

(2 Form A 2 Form B, 3 Form A 1 Form B, 4 Form A 4 Form B)

N.O. and N.C. side contacts are put in each own space surrounded with a card and a body-separater. That prevents short circuit between contacts, which is caused by their springs welding or damaged.

• UL/CSA, TÜV, SEV approved

(UL/CSA, SEV of SF3 pending)

SPECIFICATIONS

Contact

Type			SF2	SF3		SF4
Arrangement			2 Form A	3 Form A		4 Form A
			2 Form B	1 Form B		4 Form B
Initial contact resistance, max.				30 mΩ
(By voltage drop 6 V DC 1 A)
Contact material			Gold-flashed silver alloy
		Nominal switching	6 A 250 V AC, 6 A 30 V DC
		capacity
Rating
		Max. switching power	1,500 VA, 180 W
(resistive)
		Max. switching voltage	30 V DC, 440 V AC
		Max. carrying current		6 A DC, AC
Expected		Mechanical (at 180		107
life (min.		cpm) (resistive)
operations)		Electrical (at 20 cpm)	3×104*1			105

Coil (at 25°C 77°F)

Nominal operating power

500 mW

Remarks

* Specifications will vary with foreign standards certification ratings.

*1 More than 105 operations when applying the nominal switching capacity to one side of contact pairs of each Form A contact and Form B contact

*2 Measurement at same location as " Initial breakdown voltage " section *3 Detection current: 10mA

*4 Excluding contact bounce time

*5 Half-wave pulse of sine wave: 11ms; detection time: 10 s *6 Half-wave pulse of sine wave: 6ms

*7 Detection time: 10 s

*8 Refer to 5. Conditions for operation, transport and storage mentioned in AMBIENT ENVIRONMENT (Page 61).

Characteristics (at 25°C 77°F, 50% Relative humidity)

				SF2		SF3	SF4
	Max. operating speed			180 cpm (at nominal voltage)
	Initial insulation resistance*2			Min. 1,000 MΩ at 500 V DC
			Between con-			2,500 Vrms
			tact sets
	Initial break-		Between open			2,500 Vrms
	down voltage*3		contacts
			Between con-			2,500 Vrms
			tact and coil
	Operate time*4			Approx. 17 ms			Approx. 18 ms
	(at nominal voltage)
	Release time (without diode)*4			Approx. 7 ms			Approx. 6 ms
	(at nominal voltage)
	Temperature rise			Max. 45°C with nominal coil voltage
	(at nominal voltage)			and at 6 A switching current
	Shock		Functional*5		Min. 294 m/s2 {30 G}
	resistance		Destructive*5		Min. 980 m/s2 {100 G}
			Functional*7	117.6 m/s2 {12 G}, 10 to 55 Hz
	Vibration			at double amplitude of 2 mm
	resistance		Destructive	117.6 m/s2 {12 G}, 10 to 55 Hz
				at double amplitude of 2 mm
	Conditions for oper-		Ambient	–40°C to +70°C –40°F to +158°F
	ation, transport and		temp.
	storage*8
	(Not freezing and		Humidity			5 to 85% R.H.
	condensing at low
	temperature)
	Unit weight			37 g 1.31 oz			47 g 1.66 oz

ORDERING INFORMATION

Ex. SF		2						DC 12 V
Contact arrangement									Coil voltage
2: 2 Form A 2 Form B								DC 5, 9, 12, 18, 21,
3: 3 Form A 1 Form B								24, 36, 48, 60 V
4: 4 Form A 4 Form B

UL/CSA, TÜV, SEV approved type is standard (SF2, SF4) TÜV approved type is standard (SF3)

TYPICAL APPLICATIONS

•Signal

•Escalator

•Elevator

•Medical Instruments

•Railway

•Factory Automation

258

									SF
	TYPES AND COIL DATA (at 20°C 68°F)
				Pick-up	Drop-out	Coil	Nominal	Nominal
	Contact		Nominal				operating		Max. allowable
		Part No.		voltage, VDC	voltage, V DC	resistance		operating
	arrangement		voltage, V DC				current,		voltage, V DC
				(max.)	(min.)	Ω (±10%)		power, mW
							mA(±10%)
		SF2-DC5V	5	3.75	0.5	50	100	500	6
		SF2-DC9V	9	6.75	0.9			500	10.8
		SF2-DC12V	12	9	1.2	288	41.7	500	14.4
		SF2-DC18V	18	13.5	1.8			500	21.6
	SF2	SF2-DC21V	21	15.75	2.1			500	25.2
		SF2-DC24V	24	14.4	2.4	1.152	20.8	500	28.8
		SF2-DC36V	36	27	3.6			500	43.2
		SF2-DC48V	48	36	4.8	4.608	10.4	500	57.6
		SF2-DC60V	60	45	6.0	7.200	8.3	500	72
		SF3-DC5V	5	3.75	0.5	50	100	500	6
		SF3-DC9V	9	6.75	0.9			500	10.8
		SF3-DC12V	12	9	1.2	288	41.7	500	14.4
		SF3-DC18V	18	13.5	1.8			500	21.6
	SF3	SF3-DC21V	21	15.75	2.1			500	25.2
		SF3-DC24V	24	14.4	2.4	1.152	20.8	500	28.8
		SF3-DC36V	36	27	3.6			500	43.2
		SF3-DC48V	48	36	4.8	4.608	10.4	500	57.6
		SF3-DC60V	60	45	6.0	7.200	8.3	500	72
		SF4-DC5V	5	3.75	0.75	50	100	500	6
		SF4-DC9V	9	6.75	0.9			500	10.8
		SF4-DC12V	12	9	1.8	288	41.7	500	14.4
		SF4-DC18V	18	13.5	1.8			500	21.6
	SF4	SF4-DC21V	21	15.75	2.1			500	25.2
		SF4-DC24V	24	14.4	3.6	1.152	20.8	500	28.8
		SF4-DC36V	36	27	3.6			500	43.2
		SF4-DC48V	48	36	7.2	4.608	10.4	500	57.6
		SF4-DC60V	60	45	9.0	7.200	8.3	500	72

DIMENSIONS

1) SF2

																																					0.3
																												16±
																												.630±									.012
																																						0.5
																																					.020
														12.7							12.7						12.7				3.5±0.3
												5.08																		.138±.012
			.200											.500							.500						.500
																			53.3±0.3
																	2.098±.012
										5							6							7				8
25.0
.984									1
			7.62																													12.7
			.300																													.500
									2

mm inch

Schematic (Bottom view)

5 6 7 8

1

2

9 10 11 12

PC board pattern (Bottom view)

10-1.4 DIA. HOLES

2.54 10-.055 DIA. HOLES

2.54

.100

.100

9

10

11

12

General tolerance: ±0.3 ±.012

Tolerance: ±0.1 ± .004

259

SF

2) SF3

16±0.3

.630±.012

0.5

.020

	12.7		12.7	12.7	3.5±0.3
5.08					.138±.012
	.500		.500	.500
.200			53.3±0.3
		2.098±.012
5		6	7		8

25.0

.984 1

7.62			12.7
.300			.500
2
9	10	11	12

mm inch

Schematic (Bottom view)

5 6 7 8

1

2

9 10 11 12

PC board pattern (Bottom view)

10-1.4 DIA. HOLES

2.54 10-.055 DIA. HOLES

2.54

.100

.100

General tolerance: ±0.3 ±.012

Tolerance: ±0.1 ±.004

3) SF4

16±0.3

.630±.012

0.3

.012

												12.7					12.7								12.7				3.5±0.3
					5.08																						.138±.012
												.500					.500								.500
					.200
															53.3±0.3
														2.098±.012
																													7.62
									13				14									15				16
									5				6									7				8			.300
33±		0.3
1.299±.012
								1
		7.62																											12.7
		.300																											.500
								2
																													7.62
									9				10									11				12
									17				18									19				20			.300

Schematic (Bottom view)

13 14 15 16

1

5	6	7	8
9	10	11	12

2

17 18 19 20

PC board pattern (Bottom view)

18-1.4 DIA. HOLES

2.54 18-.055 DIA. HOLES

.100

2.54

.100

General tolerance: ±0.3 ±.012

Tolerance: ±0.1 ±.004

REFERENCE DATA

1. Operate/release time

ms	50
	40
time,
Operate/release	30
						Operate time
	20
											Max.
											x
	10										Min.
											Max.
						Release time
											x
	0										Min.
	80			90		100		110		120

Coil applied voltage, %V

2. Coil temperature rise
Coil applied voltage: 120%V
Contact switching current: 6A
	60
°C	50
rise,	40
Temperature
	30		Inside the coil
	20
			Contact
	10
	0	50	70
	30
		Ambient temperature, °C

3. Ambient temperature characteristics

Tested sample: SF4-DC12V
Quantity: n = 6
	%	100
Rate of	change,			Drop-out
				voltage
		50
				Pick-up
-40 -20	0			voltage
		20 40	60	80
			Ambient
			temperature, °C
		-50
		-100

260