KFD2-SR2-Ex2.W.SM Standstill and Rotational Direction Monitor

Key Benefits at a Glance

2-channel isolated barrier
24 V DC supply (Power Rail)
Dry contact or NAMUR inputs
Selectable frequency trip values
2 relay contact outputs
Start-up override
Selectable mode of operation
Line fault detection (LFD)
Up to SIL 2 acc. to IEC/EN 61508

Product photo: Standstill and Rotational Direction Monitor KFD2-SR2-Ex2.W.SM

Wiring Diagram: Standstill and Rotational Direction Monitor KFD2-SR2-Ex2.W.SM

Note

All product-related documents, such as certificates, declarations of conformity, etc., which were issued prior to the conversion under the name Pepperl+Fuchs GmbH or Pepperl+Fuchs AG, also apply to Pepperl+Fuchs SE.

Datasheet Function Classification Informative Literature Product Documentation Design / Simulation Approvals Related Products

Technical data of KFD2-SR2-Ex2.W.SM

Signal type		Digital Input
Programming		via DIP switch and programmable

Safety Integrity Level (SIL)

SIL 2

Connection		Power Rail or terminals 14+, 15-
Rated voltage	U_r	20 ... 30 V DC
Power consumption		max. 1.5 W

Connection side		field side
Connection		Input I: terminals 1+, 2+, 3- ; Input II: terminals 4+, 5+, 6-
Rated values		acc. to EN 60947-5-6 (NAMUR)
Open circuit voltage/short-circuit current		approx. 8 V DC / approx. 8 mA
Switching point/switching hysteresis		1.2 ... 2.1 mA / approx. 0.2 mA
Line fault detection		breakage I ≤ 0.1 mA , short-circuit I > 6 mA
Control input		sensor power supply approx. 8.2 V, impedance 1.2 kΩ
Pulse duration		> 200 µs for standstill monitoring, > 250 µs for rotation direction detecion

Connection side		control side
Connection		output I: terminals 7, 8, 9 ; output II: terminals 10, 11, 12
Contact loading		250 V AC/2 A/cos φ > 0.75; 126.5 V AC/4 A/cos φ > 0.75; 40 V DC/2 A resistive load
Minimum switch current		2 mA / 24 V DC
Energized/De-energized delay		approx. 20 ms / approx. 20 ms
Mechanical life		10⁷ switching cycles
Trip value	f_max	for standstill monitoring: 0.1 Hz; 0.5 Hz; 2 Hz; 10 Hz adjustable via DIP switch (S1 and S2)

Accuracy		5 % (S3 = I), 30 % (S3 = II)
Start-up override		5 seconds or 20 seconds, programmable
Frequency range		≤ 2 kHz
Rotation direction detection		90° phase difference between pulse input signal 1 and 2, overlapping ≥ 125 µs

Input/Output		reinforced insulation according to IEC/EN 61010-1, rated insulation voltage 300 V_eff
Input/power supply		reinforced insulation according to IEC/EN 61010-1, rated insulation voltage 300 V_eff
Output/power supply		reinforced insulation according to IEC/EN 61010-1, rated insulation voltage 300 V_eff
Output/Output		reinforced insulation according to IEC/EN 61010-1, rated insulation voltage 300 V_eff

Display elements		LEDs
Control elements		DIP switch
Configuration		via DIP switches
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
Input		EN 60947-5-6:2000

Ambient temperature

-20 ... 60 °C (-4 ... 140 °F)

Degree of protection

IP20

Connection

screw terminals

Mass

approx. 150 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

Height		119 mm
Width		20 mm
Depth		115 mm

Mounting

on 35 mm DIN mounting rail acc. to EN 60715:2001

EU-type examination certificate

PTB 00 ATEX 2080

Marking		II (1)G [Ex ia Ga] IIC [exsign] II (1)D [Ex ia Da] IIIC [exsign] I (M1) [Ex ia Ma] I
Input		Ex ia
Voltage	U_o	10.5 V
Current	I_o	13 mA
Power	P_o	34 mW (linear characteristic)

Supply

Maximum safe voltage

U_m

253 V AC / 125 V DC (Attention! U_m is no rated voltage.)

Output

Maximum safe voltage

U_m

253 V AC (Attention! The rated voltage can be lower.)

Fault indication output

Maximum safe voltage

U_m

40 V DC (Attention! U_m is no rated voltage.)

Certificate

TÜV 99 ATEX 1493 X

Marking

II 3G Ex ec nC IIC T4 Gc

Output

Contact loading

50 V AC/4 A/cos φ > 0.7; 40 V DC/2 A resistive load

Galvanic isolation

Input/Output		safe electrical isolation acc. to IEC/EN 60079-11, voltage peak value 375 V
Input/power supply		safe electrical isolation acc. to IEC/EN 60079-11, voltage peak value 375 V

Directive conformity

Directive 2014/34/EU

EN IEC 60079-0:2018+AC:2020 , EN 60079-7:2015+A1:2018 , EN 60079-11:2012 , EN IEC 60079-15:2019

FM approval

FM certificate		FM19US0207X
Control drawing		116-0035

UL approval

E106378

Control drawing		116-0145
Contact loading		250 V AC/2 A/cos φ > 0.75; 126.5 V AC/4 A/cos φ > 0.75; 30 V DC/2 A resistive load

CSA approval

Control drawing

116-0047

IECEx approval

IECEx certificate		IECEx PTB 11.0034 , IECEx TUN 19.0013X
IECEx marking		[Ex ia Ga] IIC [Ex ia Da] IIIC [Ex ia Ma] I Ex ec nC IIC T4 Gc

Supplementary information

Observe the certificates, declarations of conformity, instruction manuals, and manuals where applicable. For information see www.pepperl-fuchs.com.

General Notes

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