Periodic Checks - Toshiba V200 Series User Manual

V200 series programmable logic controllers
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9.3 Periodic Checks

CAUTION
Check the V200 are based on the following items every six months. Also perform checks when the operating
environment is changed.
Item
Power supply
Installation condition
Input/output
Environment
1. Pay special attention during the maintenance work to minimize the risk of electrical
shock.
2. Turn off power immediately if the V200 or related equipment is emitting smoke or
odor. Operation under such situation can cause fire or electrical shock.
Check
Measure the power voltage at the
unit's power terminals.
Check that the terminal screw is not
loose.
Check that the power cable is not
damaged.
Check that the unit is installed securely. Not loose
Check that the option card is inserted
securely. (if any)
Check that the expansion rack/unit is
installed securely. (if any)
Check that the expansion cable is
connected securely and the cable is
not damaged. (if any)
Check that the I/O module on the
expansion rack is inserted securely.
(if any)
Measure the input/output voltage at the
unit's terminals.
Check the input status LEDs.
Check the output status LEDs.
Check that the terminal block is
installed securely.
Check that the terminal screw is not
loose and the terminal has a sufficient
distance to the next terminal.
Check that the each I/O wire is not
damaged.
Check that the temperature, humidity,
vibration, dust, etc. are within the
specified range.
85 - 132/170 - 264 Vac (AC PS)
20.4 - 28.8 Vdc (DC PS)
Not loose
Not damaged
Not loose
Not loose
Not loose, not damaged
Not loose
The voltage must be within the
specified range.
The LED must light normally.
The LED must light normally.
Not loose, no play
Not loose, not contacting the next
terminal
Not damaged
Must be within the range of
general specification.
Page 130
Criteria

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