Toshiba Programmable Logic Controller V200 - Manual (Page 138)

Page 130
9.3 Periodic Checks
CAUTION
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 the V200 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
unit’s power terminals. 85 - 132/170 - 264 Vac (AC PS)
20.4 - 28.8 Vdc (DC PS)
Check that the terminal screw is not
loose. Not loose
Check that the power cable is not
damaged. Not damaged
Installation condition Check that the unit is installed securely. Not loose
Check that the option card is inserted
securely. (if any) Not loose
Check that the expansion rack/unit is
installed securely. (if any) Not loose
Check that the expansion cable is
connected securely and the cable is
not damaged. (if any) Not loose, not damaged
Check that the I/O module on the
expansion rack is inserted securely.
(if any) Not loose
Input/output Measure the input/output voltage at the
unit’s terminals. The voltage must be within the
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
installed securely. Not loose, no play
Check that the terminal screw is not
loose and the terminal has a sufficient
distance to the next terminal. Not loose, not contacting the next
terminal
Check that the each I/O wire is not
damaged. Not damaged
Environment Check that the temperature, humidity,
vibration, dust, etc. are within the
specified range. Must be within the range of
general specification.