QUANTUM™ HD UNITY SYSTEM CONTROLLER
MAINTENANCE
090.670-M (APR 2020)
Page 39
Digital Board Settings
Communications settings
Use the following table when configuring the Quantum™ for external communications.
Table 11: Communications settings
J5
in
120 ohm long communications line termination.
out*
No termination.
J7
in
RS-422/485 transmit pull-up for long communications lines.
out*
No pull-up.
J8
in
RS-422 transmit pull-up for long communications lines.
out*
No pull-up.
J9
in
RS-422/485 receive pull-down for long communications lines.
out*
No pull-down.
J10
in
RS-422 receive pull-down for long communications lines.
out*
No pull-down.
* = standard setting
Dipswitch settings
Use the following dipswitch setting tables to set the remote evaporator panel digital board addresses. The 10 remote panels
are equally split between two comm ports. Group A (zones 1-15) are on Comm. 4. Group B (zones 16-30) are on Comm. 3.
See and study the diagram on the next page to determine the correct board configuration.
Table 12: Evaporator remote panel group A / Comm
4 (zones 1-15)
I/O
Panel
Digital
Board #
SW1
SW2
SW3
SW4
SW5 SW6
1
1
On
On
On
On
Off
On
6
Off
On
Off
On
Off
On
2
2
Off
On
On
On
Off
On
7
On
Off
Off
On
Off
On
3
3
On
Off
On
On
Off
On
8
Off
Off
Off
On
Off
On
4
4
Off
Off
On
On
Off
On
9
On
On
On
Off
Off
On
5
5
On
On
Off
On
Off
On
10
Off
On
On
Off
Off
On
Table 15: Evaporator remote panel group B / Comm
3 (zones 16-30)
I/O
Panel
Digital
Board #
SW1
SW2
SW3
SW4
SW5 SW6
6
1
On
On
On
On
Off
On
6
Off
On
Off
On
Off
On
7
2
Off
On
On
On
Off
On
7
On
Off
Off
On
Off
On
8
3
On
Off
On
On
Off
On
8
Off
Off
Off
On
Off
On
9
4
Off
Off
On
On
Off
On
9
On
On
On
Off
Off
On
10
5
On
On
Off
On
Off
On
10
Off
On
On
Off
Off
On
Use the following Condenser/Vessel and Engine Room dipswitch setting tables to set digital board addresses. Refer to and
study the diagrams on the next page to determine the correct board configuration.
Table 13: Condenser digital board dipswitch settings
Digital
Board #
SW1
SW2
SW3
SW4
SW5
SW6
1
On
On
On
On
Off
On
2
Off
On
On
On
Off
On
Table 14 Vessel digital board dipswitch settings
Digital
Board #
SW1
SW2
SW3
SW4
SW5
SW6
4
Off
Off
On
On
Off
On
5
On
On
Off
On
Off
On
6
Off
On
Off
On
Off
On
Table 16: Engine room digital board
dipswitch settings
Digital
Board #
SW1
SW2
SW3
SW4
SW5
SW6
1
On
On
On
On
Off
On
