Dec 3000 Controller Rs-485 Connectors; Dec 3000 P21 Rs-485 Connections; Dec 3500 Controller Rs-485 Connectors; Dec 3500 Tb12 Rs-485 Connections - Kohler APM802 Installation Instructions Manual

DEC 3000 Controller.
DEC 3000 controller with P21 location and
Figure 30 shows the RS-485 connections.
1
2
1. Main logic circuit board
2. P21 for RSA III RS-485 communication connection
Figure 29 DEC 3000 Controller RS-485 Connectors
P21 Circuit Board
Connector Designation
P21-1
P21-2
P21-3
P21-4
P21-5
P21-6
Note: When using RS-485 communication cable, connect the
"shield" wire at either end but not at both ends.
Figure 30 DEC 3000 P21 RS-485 Connections
TT-1625 7/17
Figure 29 shows the
GM65741-
Wire
Designation
GND Shield
(+) White
(--) Black
GND Shield
(+) White
(--) Black
DEC 3500 Controller.
DEC 3500 controller with TB12 location and
Figure 32 shows the RS-485 connections.
1
2
1. TB12 connection located on the generator set
2. RS-485 communication connections to RSA III (master)
Figure 31 DEC 3500 Controller RS-485 Connectors
TB12 Circuit Board
Connector Designation
COM (+)
COM (--)
Do not connect at TB12 or DEC 3500,
tape to insulate unused end.
Note: When using RS-485 communication cable, connect the
"shield" wire at the RSA III P27 connection but not at the
DEC 3500 controller/TB12 connection.
Figure 32 DEC 3500 TB12 RS-485 Connections
Figure 31 shows the
TT-1625
Wire
Designation
(+) White
(--) Black
Shield
21