LNS QUICK SIX, Troubleshooting Manual

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2-2 Chapter 2: Common Issues
QUICK SIX
Low Voltage / PLC Shutdown
Description:
The Quick Six uses a LNS PCD2 controller (PLC) to send/receive inputs/outputs. The PLC is powered by a +24VDC input supplied by
a transformer. The input supply voltage must be regulated to ensure proper functioning. The remote control station, which is used to
send/receive data back and forth with the PLC, is powered by the +24VDC on the PLC.
Through the remote control station, the user can command the bar feeder to perform different functions by sending data to the PLC.
The PLC will then transfer data back to the remote control station to either inform the user the status of what the bar feeder is doing or
is waiting for the user to command the next task.
The following chart discusses possible problems, which may be occurring between the PLC and the remote control station:
Problem Possible Cause/s Solution/s
SPS No response
•
The PLC toggle switch is not in the
RUN position
•
A sudden drop in the supply voltage
has caused a communication
problem between the PLC and the
remote control station
•
The battery was either removed or
battery voltage was low while the
bar feed was powered down which
caused the PLC to lose its program
•
Flip the toggle switch on the PLC to
the RUN position
•
Check the supply voltage on the
PLC, can be low due to a low
incoming 3 phase voltage from the
lathe
•
Check the battery voltage, if it is low
it will need to be replaced with a
3VDC Litium/CD2032 battery and
the program will need to be restored
(refer to
Chapter 4 )
No operator action possible on the
remote control station
•
The PLC toggle switch is not in the
RUN position
•
Low supply voltage on the PLC
•
Flip the toggle switch on the PLC to
the RUN position
•
Check the supply voltage on the
PLC, can be low due to a low
incoming 3 phase voltage from the
lathe