Maintenance And Inspection; Items For Daily Inspection; Items For Periodical Inspection - Hitachi HIDIC EH-150 Applications Manual

Chapter 14 Maintenance and Inspection
In order to use the functions of this module in the optimal condition and maintain the normal operation of the
system, it is essential to conduct daily and periodical inspections.

14.1 Items for Daily Inspection

Verify the following items while the system is running.
Inspection
Item
method
Module's
LED Visual
display check
check

14.2 Items for Periodical Inspection

Turn off the power for the external I/O circuit and check the following items once every six months.
Part
Configurator
EH-RMD
Power supply
Communication
power supply
External power
supply
Installation and
connecting areas
Ambient
environment
Table 14.1 Items for daily inspection
Normal
LED display
status
STATUS Lit in green
MS Lit in green
Lit in green
NS Flashing in
green
Lit in green
RUN Flashing in
green
Table 14.2 Items for periodic inspection
Item
Configuration Must be the same as the actual
data network environment
85 to 264 V AC
Checking the
(AC power module)
power supply
21.6 to 26.4 V DC
voltage
(DC power module)
Checking the
power supply 24.0 V DC ± 1 %
voltage
Checking the
Within the specification of each
power supply
device
voltage
1] Fixing of the
module
2] Fitting of the
Must not have any problem.
connector
3] Connection of
wiring
0 to 55°C
1] Temperature
20 to 90% RH (no condensation)
2] Humidity
No dust, foreign particles, or
3] Others
vibration
Chapter 14 Maintenance and Inspection
Main cause of error
When lit or flashing in red:
Microcomputer malfunction, module hardware error
When flashing in green:
CPU error, link parameter error, module hardware
error
When flashing in red:
Module hardware error
When lit or flashing in red:
Node address overlap, Bus-off, communication
timeout
―
Check criteria
14-1
Remark
―
Tester
Tester
Tester
―
―