Kohler APM802, Installation Instructions Manual

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20 TT-1625 7/17
APM802 Controller. On the APM802 controller,
the RS-485 connections are located on TB10 and
the 120

resistor is located on the base module.
See Figure 24. Figure 25 shows the APM802
controller with TB10 location and Figure 26
shows the RS-485 connections.
1. 120

resistor, RS-485
1
Figure 24 APM802 Controller Base Module
1. RS-485 communication connections to RSA III (master)
ADV-8892
1
Figure 25 RS-485 Connectors on TB10
TB10
Connector
Circuit Board
Designation
Wire
Designation
7 (+) White
8 (--) Black
Do not connect at TB10 or base module;
tape to insulate unused end.
Shield
Note: When using RS-485 communication cable, connect the
“shield” wire at the RSA III P27 connection but not at the APM802
controller/TB10 connection.
Figure 26 APM802, RS-485 Connections on TB10
DEC 3+ Controller. Figure 27 shows the
DEC 3+ controller with P21 location and
Figure 28 shows the RS-485 connections.
TT-1377
1. Main circuit board GM28725 (top view)
2. P21 for RSA III RS-485 communication connection
3. Main circuit board mounted on the controller rear panel
1 3 2
Figure 27 DEC 3+ Controller RS-485 Connections
P21
Connector
Circuit Board
Designation
Wire
Designation
P21-1 -- Black
P21-2 + White
P21-3 GND Shield
Note: When using RS-485 communication cable, connect the
“shield” wire at either end but not at both ends.
Figure 28 DEC 3+ Controller P21 RS-485
Connections