Isolation amplifiers (intrinsically safe) Typ: KFD2-SR2-Ex1.W / KFD2-SR2-Ex1.W

Application: Isolating switch amplifier with intrinsically safe control circuit class [Ex ia] IIC for inductive contacts according to DIN 19234

or NAMUR or mechanical contacts in hazardous industrial plants.

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technical data sheet

operating instructions

operating instructions ATEX

Approvals

Case

Macrolon

Case dimensions

B x H x T : 20 x 119 x 115 mm

Mounting

Snap mounting on rail : 35 mm to EN 50022

Weather protection

IP 20 to EN 60529

Wiring

Self-opening instrument terminals Cable cross section : up to 2,5 mm²

Power supply

24 V AC

Power consumption

≤ 0,9 w 1 Kanal / ≤ 1,3 w 2 Kanal

Inputs (intrinsically safe)

No load voltage UA0 : approx. 8 VDC Short circuit current IAK : approx. 8 mA Switching point : 1,2 - 2,1 mA Switching hysteresis : approx. 0,2 mA Pulse length/pulse interval : ≥20 ms / ≥20 ms Lead breakage monitoring : I ≤ 0,1 mA

Details of certificate of conformity

PTB 00 ATEX 2081 Max. voltage U0 : 10,6 VDC Max. current IK: 19,1 mA Max. power Pmax : 51 mW Ignition protection class : [Ex ia] Explosion group : IIC

Outputs (non-intrinsically safe)

1 potential free change-over contact Pull in delay : 20 ms Drop out delay : 20 ms Contact loading AC :253 V / 2 A : cosφ = 0,7 Contact loading DC : 40 V / 2 A

Switching rate

Max. : 10Hz

Permissible temperatures Tmin / Tmax

Ambient temperature: - 20 ... + 60°C

Option

See technical data sheet