NAIS SF2D-DC12V, SF2D-DC24V, SF2D-DC48V, SF2D-DC60V, SF4D-DC12V Datasheet

(pending)

POLARISED, MONOSTABLE SAFETY RELAY

SF-RELAYS

Double contact

FEATURES

	25.0
53.3± 0.3	.984
2.098± .012

16.5± 0.5

.650± .020

2 Form A 2 Form B

53.3± 0.3	33± 0.5
	1.299± .020
2.098± .012

16.5± 0.5

.650± .020

4 Form A 4 Form B

mm inch

• High contact reliability

High contact reliability is achieved through the use of a double contact.

•Forced operation contacts (2 Form A 2 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)

There are 4 points of forced operation contacts.

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, 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.

•High breakdown voltage 2,500 Vrms between contacts and coil

•High sensitivity

Realizes thin shape and high sensitivity (500 mW nominal operating power) by utilizing high-efficiency polarized magnetic circuit with 4-gap balanced armature.

• Complies with safety standards

Standard products are UL, CSA, TÜV and SEV certified. Comform to European standards. TÜV certified (945/EL, 178/ 88). Complies with SUVA European standard.

SPECIFICATIONS

Contact

	Contact arrangement		2 Form A		4 Form A
			2 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	440 V AC, 30 V DC
		Max. carrying current		6 A
	Expected	Mechanical (at 180 cpm)		107
	life (min.	Electrical (at 20 cpm)		105
	operations)

Coil

Nominal operating power	500 mW

Remarks

* Specifications will vary with foreign standards certification ratings. *1 Measurement at same location as “Initial breakdown voltage” section *2 Detection current: 10mA

*3 Excluding contact bounce time

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

*6 Detection time: 10 s

*7 Refer to 6. Usage, transport and storage mentioned in NOTES

Characteristics

	Contact arrangement				2 Form A	4 Form A
					2 Form B	4 Form B
	Max. operating speed				180 cpm (at nominal voltage)
	Initial insulation resistance*1				Min. 1,000 MΩ	at 500 V DC
	Initial	Between open contacts			1,300 Vrms
	breakdown	Between contact sets			2,500 Vrms
	voltage*2	Between contact and coil			2,500 Vrms
	Operate time*3 (at nominal voltage)				Approx. 17 ms	Approx. 18 ms
	Release time (without diode)*3				Approx. 7 ms	Approx. 6 ms
	(at nominal voltage)
	Temperature rise (at nominal voltage)				Max. 45°C
					with nominal coil voltage and
	(at 20°C)
					at 6 A carry current
	Shock resistance		Functional*4		Min. 294 m/s2 {30 G}
			Destructive*5		Min. 980 m/s2 {100 G}
			Functional*6		10 to 55 Hz at double
					amplitude of 2 mm
	Vibration resistance
			Destructive		10 to 55 Hz at double
					amplitude of 2 mm
	Conditions for operation,			Ambient	–40°C to +70°C
	transport and storage*7 (Not			temp.	–40°F to +158°F
	freezing and condensing at			Humidity	5 to 85% R.H.
	low temperature)
	Unit weight				Approx.	Approx.
					38 g 1.34 oz	47 g 1.66 oz

4

ORDERING INFORMATION																			TYPICAL APPLICATIONS
																			• Industrial equipment such as presses and machine tools
Ex. SF			2					D					DC 5 V
Contact arrangement													Coil voltage
2: 2 Form A 2 Form B												DC 5, 12, 24, 48, 60 V
4: 4 Form A 4 Form B
UL/CSA, TÜ V, SEV approved type is standard
TYPES AND COIL DATA (at 20°C 68°F)
																Pick-up		Drop-out				Nominal	Nominal
Contact											Nominal									Coil resistance		operating		Max. allowable
		Part No.														voltage, VDC		voltage, V DC					operating
arrangement										voltage, V DC										Ω	(±10%)	current,		voltage, V DC
																(max.)		(min.)					power, mW
																						mA (±10%)
		SF2D-DC5V								5						3.75		0.5			50	100	500	6
2 Form A		SF2D-DC12V								12						9		1.2			288	41.7	500	14.4
		SF2D-DC24V								24						18		2.4			1.152	20.8	500	28.8
2 Form B
		SF2D-DC48V								48						36		4.8			4.608	10.4	500	57.6
		SF2D-DC60V								60						45		6.0			7.200	8.3	500	72
		SF4D-DC5V								5						3.75		0.75			50	100	500	6
4 Form A		SF4D-DC12V								12						9		1.8			288	41.7	500	14.4
		SF4D-DC24V								24						18		3.6			1.152	20.8	500	28.8
4 Form B
		SF4D-DC48V								48						36		7.2			4.608	10.4	500	57.6
		SF4D-DC60V								60						45		9.0			7.200	8.3	500	72

DIMENSIONS

1. 2 Form A 2 Form B

																																		16±							0.5
																																								.630 ±
																																									.020
																																										0.5
																																								.020
														12.7							12.7						12.7				3.0± 0.5
												5.08																		.118±				.020
			.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

2. 4 Form A 4 Form B

16± 0.5

.630± .020

0.3

.012

													12.7					12.7								12.7			3.0± 0.5
																												.118±				.020
						5.08
													.500					.500								.500
						.200
																53.3± 0.3
															2.098± .012
																																7.62
										13				14									15				16
33±			0.5							5				6									7				8					.300
		±
1.299			.020
									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

5