F 7553 (0630)
All rights reserved. Equipment subject to change without notice: 351
HIMA Paul Hildebrandt GmbH + Co KG, P.O. Box 1261, 68777 Brühl
F 7553
F 7553: Coupling module
in the assembly kit B 9302,
with switch-off of the watchdog signal,
for PES H51q
Figure 1: F 7553 Coupling module
The coupling module contains the monitoring of the 5 V supply of the I/O subrack and transmits
a corresponding status signal to the central module. The module is automatically tested during
operation.
The LED WD on the front plate shows the existing safety-related watchdog signal. By the sec-
ond LED SEL the access to the I/O modules of the appertaining I/O subrack is signaled.
Via the recessed WD switch the watchdog signal can be switched off for the appertaining I/O
subrack to change the coupling module F 7553 without triggering an error stop for the -MS and
-HS systems.
Space requirement 4 SU
Operating data 5 VDC / 600 mA,
24 VDC / 750 mA
Note If the WD switch is not operated before the coupling module is
replaced, the entire system switches into error stop!
S1
1234
WD
ON
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