Periodical Checking Items - Toshiba V Series User Manual

Chapter 5 Maintenance and Checking

5.2 Periodical checking items

5
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Check the following at regular intervals (every six months), or when operating
environments has changed.
Item
Power supply Measure the voltage of the power (at the
terminal of the module)
Loose screws of power supply terminals
Check that wiring cable is not damaged.
Installation Check that the basic unit is installed securely.
condition
Check that the expansion unit is installed
securely.
Check that each module is installed securely.
Check that each expansion cable connector is
not loose; and the cable is not damaged.
Engineerig Check that the functions of the engineerig tool
Tool are normal.
Check that the connector and the cable are not
damaged.
I/O modules Measure the voltage of each of the I/O
modules at the terminal block.
Check the LED of the input status display.
Check the LED of the output status display.
Check that the I/O 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 wiring cable is not damaged.
Environment Check that the temperature, humidity,
vibration, dust, etc. are within the specified
range.
Program Check that the content of the CPU program
and the master program (e,g., saved on a HDD
disk) are the same.
Battery Check whether the battery must be replaced.
(The installed date is written on the CPU
battery cover.)
Check that the connector of the battery is
inserted firmly.
1. Take special care to avoid electrical shocks when measuring the supply voltage at the power
terminal of the module.
2. DO not disassemble or remodel the model 2000 hardware or battery, or modify software
including the OS. Doing so may cause failure or malfunction resulting in fire, electrical
shocks or injury.
Table 5-2 Periodical checking items
Content of checking
Caution
model 2000 Sequence Controller S2 User's Manual -Basic Hardware-
Criteria
Within the input specification of
the module
No loose screws
No damages to cables
Not loose or no play
Not loose or no play
Not loose or no play
Not loose or damaged
Execution of simple operations
proves no problem.
Not loose or damaged
Within specifications
LEDs light normally.
LEDs light normally.
Not loose or no play
No danger of loose or contact
Not damaged.
Within general specifications
Comparison of programs proves
they are identical.
Replacement period specified in
5.4.2 Battery replacement
preiod
No loose screws