Johnson Controls FRICK QUANTUM HD - Serial Communications Port Wiring; General Note; Rs-232 Wiring and Jumpers; RS-422;485 Wiring and Jumpers

QUANTUM™ HD COMPRESSOR CONTROL PANEL
COMMUNICATIONS SETUP
090.040-CS (JAN 14)
Page 110
Q5 SERIAL COMMUNICATIONS PORT WIRING
GENERAL NOTE
The information that is presented here and on the
following pages, refers to the Interface board and not
the Q5 board. The Interface board was developed to
make customer connections to the processor easier,
as the Q5 use connections that are too small and del-
icate to easily utilize in the field.
RS-232 WIRING AND JUMPERS
With the introduction of the Q5/Interface board, cus-
tomer connections to RS-232 have been eliminated.
If RS-232 communications IS required, these signals
may be converted to RS-422/485, and the appropriate
available port(s) utilized.
RS-422/485 WIRING AND JUMPERS
All four Interface board serial communications ports
are capable of RS-485, and COMM-1 (P10) and
COMM-2 (P11) can additionally be configured as ei-
ther RS-422 or RS-485.
The following table describes the Interface board RS-
422 connector pinouts and their associated commu-
nications signals:
RS-422 Signal Wiring
Connector
Pin #
Signal
COMM-1
(P10)
COMM-2
(P11)
5 GND GND
4 TX+ TX+
3 TX- TX-
2 RX+ RX+
1 RX- RX-
RS-485 Signal Wiring
Connector
Pin #
Signal
COMM
1
(P10)
COMM
2
(P11)
COMM
3
(P17)
COMM
4
(P16)
5 GND
4 N/C
3 N/C GND
2 +TX/+RX +TX/+RX
1 -TX/-RX -TX/-RX
The following pictorial shows a cutaway view of the
Interface board, as well as the jumpers, LED’s and
signal pinouts to allow the end user to communi-
cate to COMM-1 (P10) and COMM-2 (P11) using RS-
422/485 protocol, and to use COMM-3 (P16) to com-
municate via RS-485. NOTE: COMM-3 and COMM-4
do not have any associated jumpers, and COMM-4
(P17) is reserved for I/O board communications. Refer
to the tables in this section for the specifics on the
jumper settings RS-422/485:
RS-422/485 Connectors, Jumpers and LED Location
RS-422/485 (COMM-1, & COMM-2, P11) Board Jumpers
Jumper Title
Function Jumper Setting
COMM-1
(P10
COMM-2
(P11)
J1 J7
RS-422 (4-Wire)
Default
3
2
1
1 - 2
Closed
RS-485
(2-Wire)
3
2
1
2 - 3
Closed
J2 J13
Pull Down
Default
1 Pin
Only
J3 J16
Pull Up
Default
1 Pin
Only
J5 J17
RS-422
Default
1 Pin
Only
RS-485
1 - 2
Closed
J6 J18
RS-422
Default
1 Pin
Only
RS-485
1 - 2
Closed
J4 J22
High Speed Target
Default
1 - 2
Closed
NOTE: The triangle symbol ( ) denotes Pin 1 on con-
nectors.