Frick QUANTUM LX Control Panel, Руководство по обслуживанию

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QUANTUM ™ LX EVAPORATOR CONTROL PANEL
COMMUNICATIONS SETUP
090.610-CS (MAY 2016)
Page 124
APPENDIX A
FRICK® SERIAL COMMUNICATIONS CONVERTER MODULE
(Part Number 639B0086H01)
DESCRIPTION
Frick® Controls has developed a DIN-rail mountable
communications module for the purpose of converting
typical RS-232 serial protocol to either RS-422 or RS-
485 serial protocols. The module will also work con-
verting 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 solu-
tion for field communications upgrades or modifica-
tions. No drilling is required, and minimal space is lost.
The only requirement is an external 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
necessary protocol parameters that you are trying to
achieve. It is recommended to set or verify the set-
tings of this DIP switch before mounting and wiring the
module. The circuit board must be removed from its
housing in order to access 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 followed while handling the circuit board.
The following diagram shows the circuit board:
Module circuit board
For easy reference, the DIP switch position functions
are provided on the board. For the purpose of clarity
however, refer to the following table:
MODULE DIP SWITCH SETTINGS
Switch
Position
ON Function OFF Function
1 RS-485 RS-422
2 RS-422 RS-485
3 RS-422 RS-485
4 RS-422 Pull up No pull up
5 RS-485 Pull up No pull up
6 RS-422 Pull down No pull down
7 RS-485 Pull down No pull down
8 RS-485 termination No termination
MOUNTING THE MODULE
This module can be mounted on the standard din rail
that is available in most control panels.
• Find an open area of the din rail (5/8 inch mini-
mum, for the width of the module), and preferably
as far away from any inductive loads (relays, con-
tactors, etc.) as possible.
• Module orientation is not critical, however, try
to mount it so that all wiring connections can be
made neatly, and according to any applicable local
codes.