Daily Inspections - Toshiba nv Series Instruction Manual

Chapter 8 Maintenance and Inspection
8.1

Daily Inspections

Check the items below daily while the controller is in operation
 To keep the system normal and prevent unwanted troubles, perform daily and periodic
Check the LEDs on the
power module's and the
controller module's front
panels
Check the LED display of
the TC-net I/O unit's input
module (digital input)
Check the LED display of
the TC-net I/O unit's
output module (digital
output)
Check the switch
position of the controller
module
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6F8C1220
If you find smoke or catch an unusual odor, power
CAUTION
off the controller.
Fire or explosion may result.
Remark
inspections and cleaning.
Table 8-1 Daily inspections
Item
POWER (green): On when 5 V power is
normal.
RUN (green): Off during normal
operation.
ERR (red): Off when CPU is normal.
BAT (green): On when battery voltage is
normal.
When the external input signal is ON,
the corresponding LED must light up.
When the output is ON, the
corresponding LED must remain lit up
and the corresponding external load
must operate.
Operation mode switch
HALT/RUN/P-RUN and dip switches.
(When the operation mode switch is
RUN, the controller must begin to
operate.)
Inspections
If the LED action is abnormal,
follow the procedure detailed
in Chapter 7, "Troubleshooting".
• Check whether the input
• Check whether the input
• Check whether the module is
• Check whether the external
• Check the built-in fuse.
• Check whether the output
• Check whether the module is
•Place the switch in the
predetermined position.
•Check whether the switch is
.
Mandatory
Actions
voltage meets the criterion.
terminal block is not loose.
installed firmly.
load voltage meets the
criterion.
terminal block is not loose.
installed firmly.
not broken.