5. Maintenance and Inspection
132
Periodical inspection
Check the following items regularly (about once in every 6 months). Also, check them when the
ambient condition or environment changes.
WARNING
Be extremely careful when measuring the power supply voltage at the power terminal part of the
module during an inspection.
Otherwise, it may cause an electric shock.
WARNING
Do not modify, repair, disassemble, or adjust the device, module, or board.
It may cause an electric shock, fire, injury, or failure.
In case of an operation error or failure, contact one of Toshiba's sales representatives.
NOTE:
To keep the system normal and avoid unnecessary troubles,perform daily
inspections,periodical inspections.
Table 5.2 Periodical inspection items
Item Inspection details Criteria
System power
related
Power voltage (measure at the power terminal block of the
module)
DC24V (20.4-28.8V)
Check for looseness of the power terminal screw. No looseness
Check for damage of the wiring cable. No damage
Installation
state
Check if the base unit of the controller unit is secured. No looseness or backlash
Check if the I/O base unit of the TC-net I/O unit is secured. No looseness or backlash
Check for looseness of the cable connector and damage of
the cable.
No looseness or damage
Intelligent I/O
related
Measure voltage at the I/O terminal block of each I/O
module.
Within specified values
Check the input state display LED. Illuminates normally
Check the output state display LED. Illuminates normally
Check if the I/O terminal block is secured. No looseness or backlash
Check for looseness of the terminal screw or risk of contact
with neighboring ones.
No looseness or risk of
contact
Check for damage of the wiring cable. No damage
ambient
environment
Check if the temperature, humidity, vibration, and dust are
within the specified values.
Within the general specifications
Check the
Duplex function
Change master and slave mode by Tool and confirm that
ONL, STND-BY operate normally
RUN normally
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