Quick Detail of Relay Module

Manufacturer : Siemens
Product no : KFD0-RSH-1.4S.PS2
Product type : Relay Module
1-channel signal conditioner
24 V DC supply (loop powered)
Logic input 20 V DC ... 26.5 V DC, non-polarized
Fail-safe relay contact output for de-energized and energized to safe function
Test pulse immunity
Up to SIL 3 acc. to IEC 61508

Description of Relay Module

This signal conditioner is a relay module that is suitable for safely switching applications of a load circuit. The device isolates load circuits up to 230 V and the 24 V control interface. The energized to safe (ETS) function is permitted for SIL3 applications with output I. The de-energized to safe (DTS) function is permitted for SIL3 applications with output II. Additionally a dual pole switching (DPS) is possible by combination of output I and II.
 

Specification of Relay Module

General specifications
Signal type		Digital Output
Functional safety related parameters
Safety Integrity Level (SIL)		SIL 3
Supply
Rated voltage		loop powered
Power dissipation		< 1.5 W
Power consumption		< 1.5 W
Input
Connection side		control side
Connection		Input terminals 7, 8 ; test input terminals 10, 11, 12
Pulse/Pause ratio		min. 20 ms / min. 20 ms
Test input		see functional safety manual
Signal level		0-signal: -3 ... 3 V DC 1-signal: 20 ... 26.5 V
Rated current		45 ... 50 mA
Output
Connection side		field side
Connection		output I (ETS): terminals 2, 3 output II (DTS): terminals 4, 5, 6 output I and II (DPS): terminals 2, 3, 4, 5, 6
Contact loading		253 V AC/5 A/cos φ 0.7; 30 V DC/5 A resistive load
Minimum switch current		2 mA / 24 V DC
Energized/De-energized delay		approx. 10 ms / approx. 5 ms
Mechanical life		5 x 106 switching cycles
Fuse rating		2.5 A (max. 5 A) recommended maximum utilization of the fuse: 80 %
Transfer characteristics
Switching frequency		< 10 Hz
Galvanic isolation
Input/Output		reinforced insulation according to IEC/EN 61010-1, rated insulation voltage 300 Veff
Output/Output		reinforced insulation according to IEC/EN 61010-1, rated insulation voltage 300 Veff
Indicators/settings
Display elements		LEDs
Labeling		space for labeling at the front
Directive conformity
Electromagnetic compatibility
	Directive 2014/30/EU	EN 61326-1:2013 (industrial locations)
Low voltage
	Directive 2014/35/EU	EN 61010-1:2010
Conformity
Electromagnetic compatibility		NE 21:2012
Degree of protection		IEC 60529:2013
Ambient conditions
Ambient temperature		-20 ... 60 °C (-4 ... 140 °F) Observe the temperature range limited by derating, see section derating.
Mechanical specifications
Degree of protection		IP20
Connection		screw terminals
Mass		approx. 100 g
Dimensions		20 x 119 x 115 mm (0.8 x 4.7 x 4.5 inch) (W x H x D) , housing type B2
Mounting		on 35 mm DIN mounting rail acc. to EN 60715:2001
Data for application in connection with hazardous areas
Certificate		PF 15 CERT 3844 X
	Marking	II 3G Ex nA nC IIC T4 Gc [device in zone 2]
Output
	Contact loading	50 V AC/4 A; 30 V DC/4 A , see derating curves for Zone 2
Directive conformity
	Directive 2014/34/EU	EN IEC 60079-0:2018+AC:2020 , EN 60079-15:2010

Feature of Relay Module

·1-channel signal conditioner
·24 V DC supply (loop powered)
·Logic input 20 V DC ... 26.5 V DC, non-polarized
·Fail-safe relay contact output for de-energized and energized to safe function
·Test pulse immunity
·Up to SIL 3 acc. to IEC 61508

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Frequently Asked Questions:

Q: Does your goods are new and original?

A: Yes, they are new and original.

Q: How long warranty?

A: One-year warranty.

Q: Does any certificates can be provided?

A: Yes, it depends on what product you request, please check details with us.