FRICK
QUANTUM™LX AcuAir
CONTROL PANEL 090.510-M (OCT 10)
MAINTENANCE Page 15
module and displays the state of each module. A lit
LED represents an Input that is
High
, receiving a
signal or an Output that is
On
.
If a properly configured Digital I/O is not responding
correctly, first look at the Digital Board on the
Digital
I/O
Screen and check if the module is on. If it is not
on, check if the LED on the Digital 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.
Power off the panel.
2.
Open the panel door.
3.
Remove the questionable fuse.
4.
Place the questionable fuse into the fuse tester at
the one end of each Digital I/O Board (refer to the
Digital Board drawings at the end of this section
for exact fuse tester location).
5.
Power on the panel.
6.
Check the LED on the tester. If the LED is lit, the
fuse is OK.
7.
Power off the panel.
8.
If the fuse is faulty, check for external shorts on
the corresponding circuit, the replace the fuse
with a new plug-type fuse (refer to
Recommended Spare Parts list).
Input and Output Module Testing and Replacement
1.
Power off the panel.
2.
Open the panel door.
3.
Replace the questionable module.
4.
Power on the panel.
5.
If it is an Output module, check for proper panel
voltage on the DIO connector plug. Check the
voltage between position 4 (neutral) and the
associated 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 position 4
(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
position 3 (Hot) and position 4 (neutral).
Troubleshooting an Input
1.
Make sure the LED associated with the Input is
on when power is applied to the module.
2.
If the LED is on then the fuse and Input module
are good.
3.
If the LED is on and there is no input voltage,
replace the Input module.
4.
If the LED is not on when power is applied, check
the fuse.
5.
If the fuse is good, replace the Input module.
6.
If you are receiving an Alarm or Shutdown from a
digital input in which the adjacent LED indicator
light is on, check the
Digital I/O
screen to see if
that channel is turning on and off. If so, replace
the input module.
Replacing a Defective Digital Board
The procedure to replace a Digital 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.
Remove any required chip(s) from the
defective board and install them in the
replacement board.
4.
Check that all jumpers, dipswitches and
components are properly setup on the new
board using the old board as a reference
(refer to the Digital Settings tables near the
end of this section).
5.
Install the modified replacement board in the
panel.
After replacing or installing a Digital Board and
powering on the control panel, select User Level 1 or
higher, then select the
Setpoints
Menu, then the
Communications
Menu. On the Communications
Screen is a button labeled as
[Redetect I/O Comms]
.
Clicking on the
[Redetect I/O Comms]
button will
cause the controller to examine the internal I/O
communications of the panel, and initialize all
connected boards. If a board has been removed, a
communication error shutdown will be issued until this
key is selected. The
About
screen will show what
was detected.
The
[Redetect I/O Boards]
key will cause the
controller to redetect all the I/O boards which are
connected to the system. Once the redetect has
completed, the controller will manage, and
communicate with all the detected boards. Please
refer to the
About
screen to verify that all I/O boards
were correctly identified.
