Quick Detail of Rotation Speed Monitor

Manufacturer : Pepperl+Fuchs
Product No : KFA6-DWB-EX1.D
Product type : Rotation Speed Monitor
230 V AC supply
Dry contact or NAMUR inputs
Input frequency 1 mHz ... 5 kHz
2 relay contact outputs
Start-up override
Configurable by keypad
Line fault detection (LFD)
Up to SIL2 acc. to IEC 61508/IEC 61511
Signal type : Digital Input
Rated voltage Ur : 230 V AC ± 10 %
Ambient temperature : -20 ... 60 °C (-4 ... 140 °F)
Degree of protection : IP20
Dimensions : 4 x 11.9 x 11.5 cm (1.6 x 4.7 x 4.5 inch) , housing type C3
Mounting on 35 mm DIN mounting rail acc. to EN 60715:2001
Mass : 0.3 Kg
Shipping Weight : 1.5 kg

Description of Rotation Speed Monitor

This isolated barrier is used for intrinsic safety applications. It monitors for an overspeed or underspeed condition of a discrete signal (NAMUR sensor/ mechanical contact) from a hazardous area by comparing the input frequency to the user programmed reference frequency.
An overspeed or underspeed condition is signaled via the relay outputs. Line fault detection of the field circuit is indicated by a red LED and relay.

Specification of Rotation Speed Monitor

General specifications
Signal type		Digital Input
Functional safety related parameters
Safety Integrity Level (SIL)		SIL 2
Supply
Connection		terminals 23, 24
Rated voltage		230 V AC ± 10 %
Rated current		18 mA
Power dissipation/power consumption		≤ 2 VA / 2 VA
Input
Connection side		field side
Connection		Input I: intrinsically safe: terminals 1+, 3- Input II: non-intrinsically safe: terminals 13+, 14-
Input I		acc. to EN 60947-5-6 (NAMUR)
	Pulse duration	> 50 µs
	Input frequency	0.001 ... 5000 Hz
	Line fault detection	breakage I ≤ 0.15 mA; short-circuit I > 6.5 mA
Input II		startup override: 1 ... 1000 s, adjustable in steps of 1 s
	Active/Passive	I > 4 mA (for min. 100 ms)/ I < 1 mA
	Open circuit voltage/short-circuit current	18 V / 5 mA
Output
Connection side		control side
Connection		output I: terminals 10, 11, 12 output II: terminals 16, 17, 18
Output I, II		signal, relay
	Contact loading	253 V AC / 2 A / cos φ ≥ 0.7 ; 40 V DC / 2 A
	Mechanical life	5 x 107 switching cycles
	Energized/De-energized delay	approx. 20 ms / approx. 20 ms
Transfer characteristics
Input I
	Measurement range	0.001 ... 5000 Hz
	Resolution	0.1 % of measured value , ≥ 0.001 Hz
	Accuracy	0.1 % of measured value , > 0.001 Hz
	Measuring time	< 100 ms
	Influence of ambient temperature	0.003 %/K (30 ppm)
Output I, II
	Response delay	≤ 200 ms
Galvanic isolation
Input I/other circuits		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 I, II/other circuits		reinforced insulation according to IEC/EN 61010-1, rated insulation voltage 300 Veff
Start-up override/power supply		reinforced insulation according to IEC/EN 61010-1, rated insulation voltage 300 Veff
Indicators/settings
Display elements		LEDs , display
Control elements		Control panel
Configuration		via operating buttons
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 21:2006
Degree of protection		IEC 60529:2001
Ambient conditions
Ambient temperature		-20 ... 60 °C (-4 ... 140 °F)
Mechanical specifications
Degree of protection		IP20
Connection		screw terminals
Mass		300 g
Dimensions		40 x 119 x 115 mm (1.6 x 4.7 x 4.5 inch) (W x H x D) , housing type C2
Mounting		on 35 mm DIN mounting rail acc. to EN 60715:2001
Data for application in connection with hazardous areas
EU-type examination certificate		TÜV 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! Um is no rated voltage.)
Input I		terminals 1+, 3-: Ex ia
	Voltage Uo	10.1 V
	Current Io	13.5 mA
	Power Po	34 mW (linear characteristic)
Input II		terminals 13+, 14- non-intrinsically safe
	Maximum safe voltage Um	40 V (Attention! The rated voltage can be lower.)
Output I, II		terminals 10, 11, 12; 16, 17, 18 non-intrinsically safe
	Maximum safe voltage	253 V (Attention! The rated voltage can be lower.)
	Contact loading	253 V AC/2 A/cos φ > 0.7; 40 V DC/2 A resistive load
Certificate		TÜV 02 ATEX 1885 X
	Marking	II 3G Ex nA nC IIC T4 Gc
Output I, II
	Contact loading	50 V AC/2 A/cos φ > 0.7; 40 V DC/2 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
International approvals
FM approval
	Control drawing	16-538FM-12
UL approval		E223772
IECEx approval
	IECEx certificate	IECEx TUN 03.0000
	IECEx marking	[Ex ia Ga] IIC , [Ex ia Da] IIIC , [Ex ia Ma] I

Feature of Rotation Speed Monitor

·1-channel isolated barrier
·230 V AC supply
·Dry contact or NAMUR inputs
·Input frequency 1 mHz ... 5 kHz
·2 relay contact outputs
·Start-up overridev
·Configurable by keypad
·Line fault detection (LFD)
·Up to SIL 2 acc. to IEC 61508/IEC 61511

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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.