Generac — Connecting COM Cables

Installation · Module COM cables

From a Generac service manual covering: PWRcell M3, PWRcell M3 DCB, PWRcell M4, PWRcell M4 DCB, PWRcell M5, PWRcell M5 DCB, PWRcell M6, PWRcell M6 DCB. Check it applies to your exact model before use.

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Procedure

1. Locate multicolored CAT 5 cables attached to battery power cable harness on body and top, rear battery module.
2. Connect Gray CAT 5 cable to battery module COM IN (A).
3. Connect Black CAT 5 jumper to battery module COM OUT (B).
4. Connect the other end of Black CAT 5 jumper to COM IN port (D) on front battery module (C).
5. Connect Blue CAT 5 cable to COM OUT port (E).
6. Connect the other end of Blue CAT 5 cable to COM IN port (G) on lower, rear battery module (F).
7. Continue connecting remaining battery modules, working from top to bottom.
8. Do not install a CAT 5 cable to the last battery module's COM OUT port (M).

Source: Generac service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.

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