FRICK QUANTUM™ CONDENSER/VESSEL CONTROL PANEL S90-555 M
MAINTENANCE Page 9
An LED is associated with each I/O module and displays
the state of each module. A lighted LED represents an
Input that is “High” or an Output that is “On”.
If a properly configured GCU I/O is not responding
correctly, first look at the board on the appropriate
“Service Screen” (Condenser or Vessel) and check if the
module is on. If it is not on, check if the LED on the board
is also not lit. If the LED is not lit, then check the fuse. If
the fuse is OK, then check the module.
FUSE TESTING AND REPLACEMENT
1. Open the panel door.
2. Turn off circuit breaker 1CB.
3. Remove the questionable fuse.
4. Check the questionable fuse using a volt meter or
other reliable method. If the fuse is faulty, replace
the fuse with a new plug-type fuse (Part #
333Q0001326).
5. Turn on circuit breaker 1CB.
Input and Output Module Testing and
Replacement
1. Open the panel door.
2. Turn circuit breaker 1CB off.
3. Replace the questionable module.
4. Turn on circuit breaker 1CB.
5. If it is an output module, check for proper panel
voltage on the DIO connector plug. Check the
voltage between neutral the associated signal
position to the output module.
6. If it is an input module, check if the associated
LED is on when power is applied to the module.
Troubleshooting an Output
1. Make sure the LED associated with the output is
on when power is applied to the module.
2. If the LED is not on when it should be and there
is no operating condition preventing it, contact
the Frick Service Department.
3. If the LED is on when it should be, check for
proper panel voltage on the DIO connector plug.
Check the voltage between the neutral and the
associated position to the output module.
4. If the voltage is OK, check for proper panel
voltage between the associated position to the
output module on the DIO connector and the
associated position on the terminal strip.
5. If the voltage is OK, check the wiring external to
the panel.
6. If voltage is not OK, check the fuse.
7. If the fuse is OK then check the module.
8. If the module is OK, check for proper panel
voltage on the DIO connector plug between any
odd numbered position (Hot) and neutral.
Troubleshooting an Input
1. Ensure that the LED associated with the input is
on when power is applied to the module.
2. If the LED is on, and there is good input voltage,
then the module is good.
3. If the LED is on and there is no input voltage,
replace the input module.
Troubleshooting Analog Inputs and Outputs
The “Service Screen” (both Condenser and Vessel) have
been provided to view the raw analog data from a GCU
Board. There is a separate screen for each of the GCU
Boards that are present. Analog values are converted from
binary to show volts. The error factor is .05 volts.
Checking Analog Inputs and Outputs
The GCU boards have numerous jumpers that must be
properly selected. There are eleven analog input channels
that can be selected for 4-20ma, Resistance, 0-5Vdc, or
ICTD. All of these jumper settings are listed later in this
manual (Jumper and Dipswitch Settings Section). Besides
properly setting the hardware jumpers, each transducer
must be calibrated through the appropriate sensor
calibration screen. Improper setup of either the hardware
or software will result in improper operation or range.
The most common fault associated with the reading of the
analog channels other than hardware or software setup
problems fall into one of the following categories: Sensor
fault, wiring problem, improper grounding of system.
An open wire, shorted wire, or faulty sensor will usually
give a reading at either the minimum, or maximum end of
the range scale. An erratic reading or a reading that
seems to float up and down is usually indicative of a
grounding problem. When a single transducer or cable is
shorted to earth (or system) ground, this can show up as a
whole assortment of problem channels. The easiest way
to find a short to earth problem is to disconnect all the
sensor plugs and ohm out each plug screw terminal to
earth for open (infinite) impedance. All sensors should
read open to earth.
ADDING AND REPLACING BOARDS
QUANTUM™
The procedure to replace the main board is outlined
below:
1. Shut off control power.
2. Remove the old board from the machine and the
new board from its packing and place both on an
anti-static surface.
3. Then install the modified replacement board in
the panel.
4. Verify that all jumpers are installed properly.
5. Follow the directions in the Factory Setup manual
(S90-555 FSI) for the procedure to load a
program Flash Card.
GCU BOARDS
The procedure to replace a GCU board is outlined below:
1. Shut off control power.
2. Remove the old board from the enclosure and
the new board from its packing and place both on
an anti-static surface.
3. Remove any required chip(s) from the defective
board and install them in the replacement board.
Align the notch at the end of the EPROM with the
notch in the socket.
Ensure that the GCU EPROM (installed into
U22), has the proper label affixed to it. If the
GCU board being installed is to control a
vessel, then the EPROM label must be
printed with the words “GCU VESSEL”.
Likewise, if the GCU board is being installed
to control a condenser, then the EPROM
label must be printed with the words "GCU
