Delta AH500 series Manual Page 264

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AH500 Hardware Manual
8-4
8.3.1
Tools Required for Inspection
A screwdriver
Industrial alcohol
A clean cotton cloth
A multimeter
A thermometer
A hygrometer
8.3.2
Periodic Inspection
No. Item Inspection Criterion Remedy
Ambient
temperature/hu
midity
The ambient temperature
and the ambient humidity
are measured by a
thermometer and a
hygrometer.
The ambient
temperature and the
ambient humidity must
conform to the
specifications for the
modules or the
backplane. If the
specifications are
different, the strictest
specifications have
high priority.
1
Ambient environment
Atmosphere Measure corrosive gas.
Corrosive gas must
not be present.
To ensure that the
system operates
in a stable
environment,
check the reason
why the
environment
varies, and
eliminate it.
2 Supply voltage
Measure the AC power
supply.
The power supply
should meet the
specifications for the
power supply module.
Check the power
supply.
Looseness
Check whether the module
is loose.
The module must be
installed firmly.
Please refer to
chapter 2 for more
information about
installing the
module.
3
Installation
Adhesion of
dirt
Check the appearance.
Dirt must not be
present.
Remove the dirt.
Looseness of
terminal
screws
Tighten the screws with a
screwdriver.
The screws must not
be loose.
Further tighten the
screws.
4
Connection
Looseness of
connectors
Pull the connectors.
The connectors must
not be loose.
Further tighten the
screws on the
connectors.
5
PLC system
diagnosis
Check the error logs. No new error occurs.
Please refer to
section 9.1.3 for
more information.
6 Maximum scan time
Check the state of SR413
and that of SR414 through
the device monitoring table
in ISPSoft.
The maximum scan
cycle must be within
the range specified in
the system
specifications.
Check the reason
why the scan time
lengthens.
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