QUANTUM™ HD COMPRESSOR CONTROL PANEL
COMMUNICATIONS SETUP
090.040-CS (JAN 14)
Page 115
SECTION 9
APPENDICES
APPENDIX A
FRICK
®
SERIAL COMMUNICATIONS CONVERTER MODULE
(Part Number 639B0086H01)
DESCRIPTION
Frick
®
Controls has developed a DIN-rail mountable com-
munications module for the purpose of converting typical
RS-232 serial protocol to either RS-422 or RS-485 se-
rial protocols. The module will also work converting RS-
422 or RS-485 to RS-232 (bi-directional). Due to the tight
mounting restrictions in many existing control panels, this
module provides the ultimate solution for field communi-
cations upgrades or modifications. No drilling is required,
and minimal space is lost. The only requirement is an ex-
ternal source of 24 volt DC power.
Frick
®
Communications Converter Module
SETTING THE DIPSWITCH
Inside the module is a circuit board which contains a DIP
switch. This switch must be set according to the neces-
sary protocol parameters that you are trying to achieve.
It is recommended to set or verify the settings of this DIP
switch before mounting and wiring the module. The circuit
board must be removed from its housing in order to ac-
cess this DIP switch. Each end of the housing has a small
tab, located just below the bottom most terminal block
of each end. Hold the module as shown in the following
pictorial:
Locking
Tabs
Disassembling the module
Press the tabs using the thumb and finger, and with your
other hand carefully slide the circuit board out of the
housing. Ensure that proper anti-static guidelines are fol-
lowed while handling the circuit board.
The following diagram shows the circuit board:
Module circuit board
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