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KFD2-SR2-EX1.W PEPPERL FUCHS Isolated Barrier

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KFD2-SR2-EX1.W PEPPERL FUCHS Isolated Barrier

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Brand Name : PF

Model Number : KFD2-SR2-EX1.W

Certification : ATEX

Place of Origin : Germany

MOQ : 1

Price : Negotiate

Payment Terms : T/T, Alipay, Paypal

Supply Ability : 100pcs per month

Delivery Time : stock

Packaging Details : carton

Manufacture : Pepperl+Fuchs

Model : KFD2-SR2-EX1.W

Rated voltage : 20 ... 30 V DC

Output : relay

Dimensions : 2 cm x 11.8 cm x 11.5 cm

Ambient temperature : -40 ... 70 °C (-40 ... 158 °F)

Rated current : ≤ 35 mA

Power dissipation : ≤ 0.7 W

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Product Details:
Manufacturer : Pepperl+Fuchs
Product No. : KFD2-SR2-EX1.W
Product Type : Transformer Isolated Barriers


  • 1-channel isolated barrier
  • 24 V DC supply (Power Rail)
  • Dry contact or NAMUR inputs
  • Relay contact output
  • Line fault detection (LFD)
  • Reversible mode of operation
  • Up to SIL 2 (SC 3) acc. to IEC/EN 61508


This isolated barrier is used for intrinsic safety applications.

The device transfers digital signals from NAMUR sensors or dry contacts from the hazardous area to the non-hazardous area.

The proximity sensor or the mechanical contact controls the control side load for a relay contact output. The device output changes the state when the input signal changes the state.

Via switches the mode of operation can be reversed and the line fault detection can be switched off.

During a fault condition, the relay reverts to its de-energized state and the LEDs indicate the fault according to NAMUR NE 44.

If the device is operated via Power Rail, additionally a collective error message is available.

Technical data

1. General specifications
Signal type: Digital Input
2. Functional safety related parameters
Safety Integrity Level (SIL): SIL 2
Systematic capability (SC): SC 3
3. Supply
Connection: Power Rail or terminals 14+, 15-
Rated voltage: 19 ... 30 V DC
Ripple: ≤ 10 %
Rated current: ≤ 35 mA
Power dissipation: ≤ 0.7 W
Power consumption: ≤ 0.7 W
4. Input
Connection side: field side
Connection: terminals 1+, 2+, 3-
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
Pulse/Pause ratio: min. 20 ms / min. 20 ms
5. Output
Connection side: control side
Connection: terminals 7, 8, 9
Output: signal ; relay
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
Collective error message: Power Rail
6. Transfer characteristics
Switching frequency: < 10 Hz
7. Galvanic isolation
Input/Output: reinforced insulation according to IEC/EN 61010-1, rated insulation voltage 300 Veff
Input/power supply: reinforced insulation according to IEC/EN 61010-1, rated insulation voltage 300 Veff
Output/power supply: reinforced insulation according to IEC/EN 61010-1, rated insulation voltage 300 Veff
8. Indicators/settings
Display elements: LEDs
Control elements: DIP switch
Configuration: via DIP switches
Labeling: space for labeling at the front
9. Conformity
Electromagnetic compatibility: NE 21:2017 , EN 61326-3-1:2017 , EN IEC 61326-3-2:2018
Degree of protection: IEC 60529:1989+A1:1999+A2:2013
Functional safety: IEC/EN 61508:2010
Input: EN 60947-5-6:2000
10. Ambient conditions
Ambient temperature: -40 ... 70 °C (-40 ... 158 °F)
11. Mechanical specifications
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
KFD2-SR2-EX1.W PEPPERL FUCHS Isolated Barrier

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Company Introduction:
Achievers Automation Limited has more than 10 years experience in the market of Industrial Automation, specialized in reselling factory sealed Probe, Sensor, DCS,isolator barrier, HMI, PLC,Adapter,Profibus connector and cable from Brands as BENTLY NEVADA, Endress+Hauser, YOKOGAWA,MTL,Allen-Bradley, Pepperl+Fuchs,Rosemount, ASCO, Schneider, Lenze, Pro-face, Mitsubishi, Omron, Lenze, Delta, Honeywell, Siemens and etc. If you have any request, please do not hesitate to contact us.

FAQ of Achievers
Q:Are the Products Genuine OEM Units?
A: These items have been certified by Achievers Automation Limited to be genuine OEM Units obtained through OEM or independent third-party channels.
Q:How will you arrange shipment?
A: We can arrange shipment based on your request. We have cooperated forwader who can arrange shipment via FedEx, DHL,TNT with good price.
Q:What is the warranty of goods?
A: One-year Warranty.

Product Tags:

KFD2-SR2-EX1.W PEPPERL FUCHS Isolated Barrier


PEPPERL FUCHS Isolated Barrier KFD2-SR2-EX1.W


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