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
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