QUANTUM™ LX EVAPORATOR CONTROL PANEL
OPERATION 090.610-O (SEP 13)
Page 11
WIRING FOR COMMUNICATIONS
NOTE: Refer to the next sections entitled ZONE CONFIGU-
RATION CHART and EVAPORATOR SYSTEM COMMUNICA-
TIONS WIRING DIAGRAM, for additional information about
how the system is confi gured.
Interface Panel
Depending upon the number of Remote Panels that
have been installed, there could be up to two dif-
ferent communications cables run to the Interface
Panel. One of these cables would feed Remote I/O
Panels 1 through 5, and a second cable would feed
Panels 6 through 10. The incoming RS-485 commu-
nications cable(s) will be a two-conductor, shielded
type. Frick Controls recommends the use of Belden
#9841 or equal.
Wiring for 1 to 5 Remote Panels
For systems that have between 1 and 5 Remote
Panels, use the following wiring procedure:
▯ Open the panel door.
▯ On the inside of the enclosure door, you
will fi nd the Quantum™ controller, and
a communications terminal block. No-
tice that there are two wires that con-
nect from the left side of the terminal
block, to the Quantum™ (Comm. 4).
These are the internal TX / RX commu-
nications wires. You will be connect-
ing the external fi eld communications
wires to the other (right) side of these
terminals.
▯ Take the end of the incoming commu-
nications cable, and strip about 2 inches
of insulation from the end.
▯ Clip the shield wire back even with the
insulation, and either use heat shrink
tubing to cover the area, or electrical
tape. This will help to ensure that any
strands of the shield that may be ex-
posed don’t come into contact with any
live voltage areas of the panel.
▯ Strip the end of each of the two re-
maining conductors back about ¼ of
an inch. Generally there are only three
color combinations available depending
on the type of cable used. There will be
either a black and white/clear insulated
wire, a red and white/clear insulated
wire, or a red and black. Either way,
one of the wires should be black. Take
the black wire and insert it into the top
position of the terminal block (labeled
as –TX/RX).
▯ Take the remaining wire (white/clear or
red) and insert it into the second posi-
tion down from the top of the terminal
block (labeled as +TX/RX).
▯ It is very important that the colors of
these wires follow this same polarity
scheme throughout the daisy-chaining
process to all panels.
▯ Refer to the Zone Confi guration Chart
later in this guide to verify dipswitch
settings.
Wiring for 6 to 10 Remote Panels
For systems that have Remote I/O Panels 6
through 10, use the following wiring procedure:
▯ Open the panel door.
▯ Follow the same guidelines for insu-
lation and wire stripping as described
earlier.
▯ For Q5 board installation, skip this step.
On controllers that have the Q4 board,
there is a DIN rail mounted below the
incoming power strip. On the DIN rail
is mounted a RS-232 to RS-485 com-
munications converter module (Comm.
3), and a power supply. Both of these
components have been pre-wired at
the factory. All that is left to do is con-
nect the fi eld connections. Refer to the
following pictorial for connections:
TX/RX+ TX/RX-
▯ For Q5 board units, skip this step. For
Q4 board units, Insert the black wire
into the top of the module in terminal
position 4, and the white/clear or red
wire into position 6, as shown above.