QUANTUM
™
LX EVAPORATOR CONTROL PANEL
MAINTENANCE
090.610-M (MAY 2016)
Page 36
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 devices. Each
enhanced board has the capability of 24 independent input
channels. With the Quantum™ Evaporator Control, these
I/O channels are dedicated through the software and
external wring, as to the function of each channel.
COMMUNICATIONS LED’S
The Quantum™ controller is in constant communication with
the Analog (and Digital) Board(s). You will notice on each
Analog and Digital board, that there is a pair of LED’s that
are labeled as RX and TX. These letters represent receive
(RX) and Transmit (TX). These LED’s should be ashing at
a high rate during normal operation. This indicates that the
Quantum™ LX, and the board that you are looking at, are
properly communicating with each other.
• Refer to the JUMPER AND DIPSWITCH SETTINGS
section later in this section. This section contains
the dipswitch settings for addressing the Analog
I/O Boards. When these switches are properly set,
the Quantum™ LX 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 can be one of the following:
• Lost or failed communications (displayed in
the Communications Status box on the Home
screen)
• The wrong analog input signals being received
• The wrong analog output signals being sent
from the board.
CONNECTIONS TO THE QUANTUM™
As stated earlier, the Quantum™ Evaporator control
system utilizes up to two Digital, and one Analog
Board. In order to connect all of these boards together
so that the Quantum™ can control them, they must
be interconnected with a wiring harness that provides
all of the necessary D.C. voltage requirements, as well
as the communications capabilities. A diagram of this
wiring harness can be found later in this manual (see
the Power I/O Wiring Harness drawing). This harness
has a 6-pin connector at one end that plugs into the
Quantum™. Another connector plugs into the power
supply. The remaining three connectors (16 pin) will
plug into each of the Digital and Analog Boards in the
system.
Upon close examination of this harness, you will
notice that each of the connectors have two rows
of connections. The wires that are inserted into the
positions of one row, are internally daisy-chained on
each I/O board, to continue the voltages and signals
to the adjacent row. Therefore, any time that a
connector is unplugged from the daisy-chain, these
voltages and signals cannot continue through to the
ANALOG BOARD
OVERVIEW
The Frick
®
Quantum™ LX Evaporator control panel is
capable of reading external analog devices, such as
temperature probes and pressure sensors. It uses these
input signals for the purpose of monitoring and control.
As an example, if an external temperature sensor
begins 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, or provide a warning. Unlike a digital
signal, which is typically either an on or off state, an
analog signal can assume a wide range of values, such
as a temperature probe’s 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 software/
hardware converts the electrical signals received from
these devices into data, which is then sent on to the
Q4 or Q5 control board via communications, and is
monitored by the control software.
GENERAL DESCRIPTION
This board features twenty-four input channels,
and eight output channels. The board channels are
congured through software, rather than using physical
jumpers. A more detailed description of the operation
of this board is provided in the sections that follow. A
drawing f this board is shown here:
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