KFD0-CS-Ex2.51P is a Pepperl+Fuchs two-channel isolated barrier (current driver/repeater) for intrinsic safety applications. It passes current signals between hazardous-area field devices and the safe-area control circuit, with safe galvanic isolation between them.
The barrier is loop powered, needs no separate supply, and mounts on a 35 mm DIN rail. Pepperl+Fuchs rates it up to SIL 2 (SC 3) to IEC/EN 61508.
Specifications
| Channels |
2 |
| Supply |
4 to 35 VDC, loop powered |
| Current |
0 to 40 mA |
| Accuracy |
1% |
| Isolation |
Field to control circuit per IEC/EN 60079-11, 375 V peak |
| Ambient temperature |
-4 to 158 °F (-20 to 70 °C) |
| Protection |
IP20 |
| Dimensions |
0.8 x 4.2 x 4.5 in. (W x H x D) |
| Mounting |
35 mm DIN rail |
| Approvals |
ATEX, IECEx, FM, cULus (UL E106378) |
Installation notes
- Field circuit on terminals 1+, 2- and 4+, 5-; control circuit on 12-, 11+ and 8-, 10-, 9+
- Observe the certificates, control drawings 116-0437 (FM) and 116-0438 (cULus) and the instruction manual
FAQ
Does the KFD0-CS-Ex2.51P need a separate power supply?
No. It is loop powered from the control circuit, 4 to 35 VDC.
How many channels does it have?
Two isolated channels, each passing 0 to 40 mA.
How is it mounted?
On a 35 mm DIN rail, in an IP20 housing.
