Wiring and Setting Up the System Excel 800
EN1B-0375GE51 R0910
24
Connecting Power Supply
The Excel 800 System can be powered by one or more
external transformers.
Note
The maximum length for the power supply cable from a
transformer is 3 m. This also includes the length of the
modules and the connection cables between the rails.
Referring to Fig. 31 the following conditions must be fulfilled:
A ≤ 3 m and B ≤ 3 m
Single or the First Transformer
► Connect the transformer to terminals 1 and 2 of the
XCL8010
Controller.
I/O I/O I/O
CPU
21
BA
A 3 m
AND
B 3 m
Fig. 31 Wiring power supply from the (first) transformer to
the controller module
Additional Transformer
► Connect the additional transformer in a second room or
cabinet to terminals 73 and 74 or 77 and 78 of an
I/O module.
I/OI/O
71
72
73
74
MAX. 3 m
TRANS-
FORMER 2
Fig. 32 Wiring the power supply from a second
transformer
NOTICE
Equipment damage!
► Do not use bridge connectors to connect modules
powered by different transformers.
► When connecting modules powered by different
transformers using cables, be sure to not connect
terminals 73 and 77.
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