Switch Amplifier, Timer Relay KFA5-DU-Ex1.D

• 1-channel isolated barrier
• 115 V AC supply
• Dry or NAMUR inputs
• Relay and transistor output
• Adjustable output timer functions from 10 ms ... 60 min
• Input frequency up to 80 Hz, pulse divider up to 1 kHz
• Reset function
• Configurable by keypad
• t detection (LFD)

This isolated barrier is used for intrinsic safety applications. It is a highly configurable timer that accepts a digital nsor/mechanical from a hazardous area and is commonly used in applications requiring on-delay, off-delay, one-shot, or pulse lengthening. The output relay switch duration is easily adjusted, and a pulse divider function allows step-down ratios from 1:1 to 9999:1. A reset can be activated via dry switch and used to terminate a particular time function. The unit is easily programmed by the use of a keypad located on the front of the unit. t detection of the field circuit is indicated by a red LED. For additional information, refer to the manual and . General specifications Supply Input Output Transfer characteristics Galvanic isolation Indicators/settings Directive conformity Conformity Ambient conditions Mechanical specifications Data for application in connection with hazardous areas International approvals General information

	Digital Input
Connection	terminals 23, 24
Rated voltage	115 V AC ± 10 %
Rated current	35 mA
Power consumption	4 VA
Connection side	field side
Connection	Input I: terminals 1+, 3- , input II: terminals 13+, 14-
Input I	acc. to EN 60947-5-6 (NAMUR), see manual for electrical data
	Open circuit voltage/short-circuit current	8.2 V / 10 mA
	Switching point/switching hysteresis	1.2 ... 2.1 mA / approx. 0.2 mA
	Pulse duration	min. 75 &micro,s / 1 ms see instruction manuals, the maximum input frequency has to be observed.
	Input frequency	0 ... 80 Hz , pulse divider 0 ... 1 kHz
	t detection	breakage I &le, 0.15 mA, short-circuit I > 6.5 mA
Input II	reset
	Active/Passive	I > 3 mA / I < 1.5 mA
	Open circuit voltage/short-circuit current	12 V / 3.5 mA
	Pulse duration	min. 10 ms
Connection side	control side
Connection	output I: terminals 10, 11, 12 , output II: terminals 19+, 20-
Output I	utput
	loading	253 V AC/ 2 A / cos &, &ge, 0.7 , 40 V DC/ 2 A
	Mechanical life	5 x 107 switching cycles
	Energized/De-energized delay	approx. 20 ms / approx. 20 ms
Output II	nic unit, isolated
	loading	40 V / 50 mA
	Energized/De-energized delay	after rising input flank 3 ms , after falling input flank 2 ms
	>	1-5 V (50 mA, short-circuit/overload proof) 0-output (off-state current &le, 10 &micro,A)
Input I
	Resolution	< 0.1 % of the set value, min. 10 ms
	Accuracy	2 ms
	Influence of ambient temperature	0.003 %/K (50 ppm)
Input I/other circuits	reinforced insulation according to IEC/EN 61010-1, rated insulation voltage 300 Veff
Output I/power supply and reset	reinforced insulation according to IEC/EN 61010-1, rated insulation voltage 300 Veff
Output I, II against eachother	reinforced insulation according to IEC/EN 61010-1, rated insulation voltage 300 Veff
Output II/power supply	reinforced insulation according to IEC/EN 61010-1, rated insulation voltage 300 Veff
Output II/reset	basic insulation according to IEC/EN 61010-1, rated insulation voltage 50 Veff
Reset/power supply	reinforced insulation according to IEC/EN 61010-1, rated insulation voltage 300 Veff
Display LEDs , display
Control Control panel
Configuration	via operating buttons
Labeling	space for labeling at the front
Electromagnetic compatibility
	Directive 2014/30/EU	EN 61326-1:2013 (industrial locations)
Low voltage
	Directive 2014/35/EU	EN 61010-1:2010
Electromagnetic compatibility	NE 21:2006
Degree of protection	IEC 60529:2001
Ambient temperature	-20 ... 60 °C (-4 ... 140 °F)
Degree of protection	IP20
Connection	screw terminals
Mass	approx. 300 g
Dimensions	40 x 119 x 115 mm (1.6 x 4.7 x 4.5 inch) , housing type C3
Mounting	on 35 mm DIN mounting rail acc. to EN 60715:2001
EU-type examination certificate	TÃœV 99 ATEX 1408
	Marking	II (1)G [Ex ia Ga] IIC II (1)D [Ex ia Da] IIIC I (M1) [Ex ia Ma] I
Supply
	Maximum safe voltage	253 V AC (Attention! The rated voltage can be lower.)
Input I	terminals 1+, 3-: Ex ia
	Voltage Uo	10.1 V
	Current Io	13.5 mA
	Power Po	34 mW (aracteristic)
Input II	terminals 13+, 14- non-intrinsically safe
	Maximum safe voltage Um	40 V (Attention! The rated voltage can be lower.)
Output I	terminals 10, 11, 12 non-intrinsically safe
	loading	253 V AC/2 A/cos &, > 0.7, 40 V DC/2 A resistive load (TÃœV 99 ATEX 1408) 50 V AC/2 A/cos &, > 0.7, 40 V DC/2 A resistive load (TÃœV 02 ATEX 1885 X)
	Maximum safe voltage	253 V (Attention! The rated voltage can be lower.)
Output II	terminals 19+, 20- non-intrinsically safe
	Maximum safe voltage	40 V (Attention! The rated voltage can be lower.)
Certificate	TÃœV 02 ATEX 1885 X
	Marking	II 3G Ex nA nC IIC T4 Gc
Output I
	loading	50 V AC/2 A/cos &, > 0.7, 40 V DC/1 A resistive load
Galvanic isolation
	Input I/other circuits	safe electrical isolation acc. to IEC/EN 60079-11, voltage peak value 375 V
Directive conformity
	Directive 2014/34/EU	EN 60079-0:2012+A11:2013 , EN 60079-11:2012 , EN 60079-15:2010
FM approval
	Control drawing	116-0305
UL approval	E223772
IECEx approval	IECEx TUN 03.0000
	Approved for	[Ex ia Ga] IIC, [Ex ia Da] IIIC, [Ex ia Ma] I
Supplementary information	Observe the certificates, declarations of conformity, instruction manuals, and manuals where applicable. For information see .