Check Items - Panasonic FP-M Hardware Manual

6-4. Maintenance

2. Check Items

• Perform a daily or periodic check to maintain proper operation of the FP-M programmable controller.
Item
Power supply voltage
I/O power supply
voltage
Environment
LEDs on control
boards
Indicators (LED) on
control and expansion
boards
Mounting and
connecting condition
Backup battery
126
Check point
Check the power supply condition by
measuring it at power supply
terminals of the FP-M.
Check the I/O power supply condition
by measuring it at I/O power supply
terminals of the FP-M.
Ambient temperature
(e.g., temperature in the control box)
Ambient humidity
(e.g., humidity in the control box)
Is dirt and dust present?
RUN LED
ERR. LED
ALARM LED
Input indicators (LED)
Output indicators (LED)
• Are all of the boards firmly fixed on
a panel?
• Are all the terminal screws securely
tightened?
• Is the wiring being properly kept?
Is the backup battery being
periodically replaced?
Criteria for judgement
21.6 to 26.4 V DC
20.4 to 26.4 V DC: C20T and C32T types
22.8 to 26.4 V DC: C20R type
0 ˚C to 55 ˚C/32 ˚F to 131 ˚F
30 to 85 % RH
(non-condensing)
Free from corrosive gases and excessive
dust
Turns ON when program is executed.
Turns ON when a self-diagnostic error
occurs.
Turns ON when an abnormality is detected
or watchdog timer error occurs.
Turns ON when input devices are ON.
Turns OFF when input devices are OFF.
Turns ON when output devices are ON.
Turns OFF when output devices are OFF.
Refer to the preceding page.