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090.040-M (MAR 12)
Page 34
OVERVIEW
The Frick Quantum™ HD control panel is capable of
reading external analog devices, such as tempera-
ture probes and pressure sensors. It uses these input
signals for the purpose of monitoring and control. As
an example, if an external temperature sensor be-
gan to read a higher than expected temperature in
some area, the controller would sense this change,
and provide the necessary output control signal to
remedy the situation. Unlike a digital signal, which is
typically either an on or off state, an analog signal can
assume a wide variety of states, such as a tempera-
tures probe reading a wide range of temperatures.
The method used for receiving (and sending) these
signals is the analog board. The analog devices are
wired directly to the board, and the on-board soft-
ware/hardware converts the electrical signals re-
ceived from these devices into data, which is then
sent on to the Q5 control board via communications.
It features twenty-four input channels, and eight out-
put channels. Rather than using physical jumpers to
confi gure each channel, this is done through the soft-
ware. A more detailed description of the operation of
this board is provided in the sections that follow.
ANALOG BOARD DESCRIPTION
The Analog Board is actually a small microprocessor
board and is programmed to control analog outputs,
or accept analog inputs, from external electrical de-
vices. Each board has the capability of 24 indepen-
dent input channels. With the Quantum™ HD Com-
pressor Control, these I/O channels are dedicated
through the software and external wiring, as to the
function of each channel. The Quantum™ 5 controller
can utilize up to two separate analog boards (Analog
Board #1 and #2), depending on the selected options.
A pictorial of this board is shown here:
For each of the boards that are installed, they will
have specifi c I/O (Input / Output) functions. For the
operating software to distinguish board #1 from #2,
each board must be properly addressed as #1 and
#2 using the dipswitches on each board (see Analog
Board Dipswitch Settings chart for this information).
QUANTUM™ HD COMPRESSOR CONTROL PANEL
MAINTENANCE
ANALOG BOARD
COMMUNICATIONS LED'S
The main board is in constant communication with all
Analog (and Digital) Boards. You will notice on each
Digital and Analog board, that there are a pair of
LED's labeled as RX and TX. These letters represent
Receive (RX) and Transmit (TX). These LED's should
be fl ashing at a high rate during normal operation.
This indicates that the main board, and the Digital
board that you are looking at, are properly communi-
cating with each other.
•
Refer to the JUMPER AND DIPSWITCH SET-
TINGS section later in this section. This
table contains the dipswitch settings for ad-
dressing the Analog I/O boards. When these
switches are properly set, the main board is
able to serially communicate with each I/O
board and provide control signals and data
exchange. If these switches are not properly
set, the result will be lost or failed commu-
nications, or the wrong outputs being ener-
gized, or the wrong inputs being received.
CONNECTIONS TO THE QUANTUM™
As stated earlier, the Quantum™ HD compressor con-
trol system utilizes up to two Digital, and two Analog
boards. To connect these boards together so that the
Quantum™ HD can control them, they must be inter-
connected with a wiring harness that provides all of
the necessary D.C. voltage requirements, as well as
the communications capabilities.
Analog boards only require the +12 Vdc voltage and
the Return (or common) for logic power. The commu-
nications signals (RX & TX) are required by all boards.
A harness distributes power and communications
from the terminal blocks to the various logic boards.
The harness splits into two branches, with each
branch ending with a 16 pin connector. The branch
that supplies power and communications to the Ana-
log board(s) utilizes yellow and black wires for +12Vdc
power and Common, and white/black and white/red
wires for serial communications.
LOGIC VOLTAGE (POWER) LED'S
Located on the Analog Board are two power LED's.
The fi rst of these is D1 LED (+5Vdc), and will be illumi-
nated as long as the Control Power switch is ON, and
the proper +12Vdc voltage is present at Analog Board
connector P3. The on-board power supply steps the
+12Vdc down to +5 Vdc to power the board. This LED
does not indicate that the proper voltage is neces-
sarily present at the board, only that the voltage is
enough to energize the voltage sensing circuitry.
If a voltage related problem is suspected with regard
to an Analog Board, the best way to actually deter-
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Table of Contents
Troubleshooting
