
FRICK
®
QUANTUM™ LX AcuAir
®
CONTROL PANEL S90-510 CS (MAR 07)
COMMUNICATIONS SETUP Page 83
CONVERTING AN RS-232 SIGNAL TO RS-422/485
In order to communicate to the Quantum™ controller via
RS-422 or RS-485 on Comm. Ports 1 or 2, you will need
to convert the RS-232 signal from the source (Note: If the
originating signal is already RS-422/485, the Quantum™
LX can accept these signals directly on the 4-pin
connectors of Comm. Ports 1 & 2).
One converter that can be used is a DIN rail mountable
device, the Frick
®
Serial Communications Converter
Module, manufactured by YORK International (P/N
639B0086H01). This module will allow the conversion
from a standard RS-232 signal to either RS-422 or RS-485
or vice-versa. The module is powered from a 24VDC
source. It can be used in a standalone panel along with an
Allen Bradley SLC or with an external modem.
Frick
®
Serial Communications Converter Module
Once DIP switch settings on the converter module have
been verified, you will need to verify the jumper settings of
the Quantum™ controller. Refer to Tables 4 and 5.
After verifying both the Converter module and Quantum™
settings, the interconnecting wiring must be done. Be sure
to use 4-conductor shielded communications cable (two
wires for transmit, two for receive) for RS-422, or 2-
conductor shielded cable for RS-485.
NOTE: Refer to Appendix A for additional information,
or the manual (S90-0700 I) that comes with the
module.
TABLE 13 –CONVERTER MODULE CONNECTIONS
MODLUE POWER
RS-232
RS-422
RS-485
Pin 1
-RX
Pin 2
+RX
Pin 3
Pin 4
-TX
-RX / -TX
Pin 5
+TX
+RX / +TX
Pin 6 (Not Used)
Pin 7
- 24VDC
Pin 8 (Not Used)
Pin 9
+24VDC
Pin 10
GND
Pin 11
TX
Pin 12
RX
RS-422 and RS-232 Wiring signals for the Communications Converter Module
RS-485 and RS-232 Wiring signals for the Communications Converter Module
RS-422
Signal Wiring
Frick
®
Communications
Converter Module
(P/N 639B0086H01)
-RX
-TX
+TX
+RX
RS-232
Signal Wiring
TX
RX
GND
RS-485
Signal Wiring
Frick
®
Communications Converter Module
(P/N 639B0086H01)
RS-232
Signal Wiring
-RX/-TX
+RX/+TX
TX
RX
GND