1. Using the field-provided shielded cable, make a small service loop after entering the controller and attach the provided
EMI filter at the intersection of the loop.
FIGURE 1.8
Communication Wiring: Termination at the Controller
2. Connect one wire to terminal #44 (NEGATIVE), the other wire to terminal #45 (POSITIVE) and the drain wire to
ground terminal #46.
The steps outlined on the following pages show how to connect the communication wiring using the daisy chain
method shown in Figure 1.5. If using the alternate method (as shown in Figure 1.6), the connections to the
controller and each wall-mount unit will be the same but the filters need to be placed in the positions shown in
Figure 1.7.
-
+
G
To Wall-Mount Unit 1
Control Board RS485
1 2 3
4 5
7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46
6
NOTE:
The drain only gets grounded one time,
anywhere in the chain.
Page
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