Technical data

● Under
the following conditions the output relays K1 and K2 will not switch
to the operating position:
– Only one enabling circuit has been closed due to an error.
– The tolerance value for simultaneity has been exceeded.
– The feedback circuit X1-X2 is open.
● If an enabling circuit is interrupted after activation (be releasing the ena‐
bling switch or through a failure), the output relays K1 and K2 switch back
to the neutral position. The operator controlled contacts between the con‐
nection terminal 13-14 and 23-24 will open. The output relays will only
respond if both enabling circuits are opened and simultaneously closed
again.
This procedure means that the requirement for a single failure not to lead to
loss of the safety function is complied with. An individual failure is detected after
the next cycle at the latest.
Project Planning Manual | Rexroth IndraControl VCH 08.1 Electric Drives
and Controls
| Bosch Rexroth AG 49/80
Pin Assignments of the IndraControl VCH 08.1