Kohler — Transfer Switch Network Connection Procedure (MPAC 1000)
Installation · MPAC 1000 ATS Controller
From a Kohler service manual — check it applies to your exact model before use.
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Before you start
- Hazardous voltage. Will cause severe injury or death. Disconnect all power sources before opening the enclosure.
- Short circuits. Do not contact electrical connections with tools or jewelry. Remove all jewelry before servicing.
Procedure
- Locate terminal strip TB1 on the controller's main logic board.
- Connect the incoming RS-485 cable to terminals TB1-11 and TB1-12. Connect the cable shield to ground terminal TB1-10.
- If more than one transfer switch, connect outgoing RS-485 cable to TB1-14 and TB1-15. Connect A (--) to A (--) and B (+) to B (+). Connect shield to ground TB1-13.
- Tighten the connections to 0.5 Nm (4.4 in. lb.).
- Proceed to Section 13 to configure the controller's communication parameters.
Specs & values
- Up to 247 transfer switches in an RS-485 Amazon eBay $499.00 FridayParts $92.25 network
- Tighten connections to 0.5 Nm (4.4 in. lb.)
Source: Kohler 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.