Isolation amplifiers (intrinsically safe) Typ: KFA6-SR2-Ex2.W.IR
application: Bistable isolation amplifier with intrinsically safe control circuit class [Ex ib] IIC for
Double inductive contacts according to DIN 19234 or NAMUR or mechanical contacts in explosion-hazardous industrial plants.
technical data sheet
Approvals Case
NORYL SE 0 (self-extinguishing)
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
207 - 253 V / 45 - 65 Hz
Power consumption
≤ 1,5 W
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 : ≥10 ms / ≥10 ms
Lead breakage monitoring : I ≤ 0,1 μA
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)
2 potential free change-over contacts
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
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