Kohler APM 402 (Decision-Maker 3000) (V3)
This topic is the install guide for the after-market gateway (part# A0009887841) with the GL899-PARTIAL COMM HARNESS (part# A0009887770) and the GL899-PARTIAL RETROFIT HARNESS (part# A0009887772) when utilizing the Kohler Decision-Maker® 3000 APM402 Controller.
Kohler Decision-Maker Display
Schematic of Decision-Maker Connectors
Modbus Communication Settings and Notes
Settings should match values provided in this table.
Address: 1 |
Baud Rate: 19200 |
If different settings are required, please contact Support.
Generac Gateway Side Terminations | Description | Harness Wire Color | Equipment Side Terminations |
|---|---|---|---|
2 | DC+ | A0009887772 Red | 42A (B+) |
1 | DC- | A0009887772 Black | Terminal 2 (B-) |
8 | Data + | A0009887770 Orange / White | P21-2 + |
9 | Data - | A0009887770 White / Orange | P21-3 - |
6 | Not in Auto | A0009887772 Purple | *P29-NO |
7 | Common Alarm | A0009887772 Green | *TB2-NO |
10 | Data GND | A0009887770 Blue/ White | P21-1 GND |
Harness Relay #1 | COM | A0009887772 Blue | TB3-3 |
N/O | A0009887772 White / Blue | TB3-4 |
*Default configuration for alarms are for Common Alarm on White wire and Not in Auto on Green wire. If monitoring other statuses is required, please contact Support.
Gateway Connection Ports
Pin | Connector | Description |
1 | A | Plant Supply –ve |
2 | Plant Supply +ve | |
3 | Digital Output A | |
4 | Digital Output B | |
5 | Flexible Sender Common | |
6 | Flexible Sender A | |
7 | Flexible Sender B | |
1 | B
| RS485 A |
2 | RS485 B | |
3 | RS485 Screen | |
4 | CAN H | |
5 | CAN L | |
6 | CAN Screen |
Check out our knowledge base and support center for information on any technical questions.