Maintenance
129
Doc No: UMAN\FL\0110
Rev. No.: 1.02B
9.3
Periodic Checks
1. Pay special attention during the maintenance work to minimize the risk of electrical
shock.
2. Turn off power immediately if the FlexiLogics unit or related equipment is emitting
smoke or odor. Operation under such situation can cause fire or electrical shock.
Check the FlexiLogics units are based on the following items every six months. Also perform checks when the
operating environment is changed.
Item
Check
Criteria
Power supply
Measure the power voltage at the
85 - 132/170 - 264 Vac (AC PS)
unit’s power terminals.
20.4 - 28.8 Vdc (DC PS)
Check that the terminal screw is not
Not loose
loose.
Check that the power cable is not
Not damaged
damaged.
Installation condition
Check that the unit is installed securely. Not loose
Check that the option card is inserted
Not loose
securely. (if any)
Check that the expansion rack/unit is
Not loose
installed securely. (if any)
Check that the expansion cable is
Not loose, not damaged
connected securely and the cable is
not damaged. (if any)
Check that the I/O module on the
Not loose
expansion rack is inserted securely.
(if any)
Input/output
Measure the input/output voltage at the
The voltage must be within the
unit’s terminals.
specified range.
Check the input status LEDs.
The LED must light normally.
Check the output status LEDs.
The LED must light normally.
Check that the terminal block is
Not loose, no play
installed securely.
Check that the terminal screw is not
Not loose, not contacting the next
loose and the terminal has a sufficient
terminal
distance to the next terminal.
Check that the each I/O wire is not
Not damaged
damaged.
Environment
Check that the temperature, humidity,
Must be within the range of
vibration, dust, etc. are within the
general specification.
specified range.
CAUTION