Hardware Manual for the PCD2.M5 Series│Document 26/856; Version EN 12│2014-07-24
Saia-Burgess Controls AG
Power supply, earthing scheme, cable layout
PCD2.M5_ Classic CPUs and expansion housings
3-26
3
Any shielding of analogue signals or communication cables should also be brought to
the same earth potential, either via a Minus terminal or via the earthing bar. All Minus
connections are linked internally. For problem-free operation, these connections
should be reinforced externally with short wires of 1.5 mm
2
.
3.7.4 Cable layout
Wiring to the I/O modules can be laid in the cable channels on both sides.
Axxx
Axxx
Wxxx
Wxxx
Axxx
Axxx
Exxx
Exxx
PGU
24 VDC
Batt
WD
Run
Halt
Error
CPU
Supply
_
_
_
_
+
+
+
The cables to the terminals on the motherboard are run through the two side channels from the
bottom or from the top.
The terminals are accessible on the motherboard without removing the cover.
Following these rules will ensure that the LEDs are visible and the bus connections remain ac
-
cessible.