Hitachi HSC-2100, Hardware Manual

Page: 159 / 169

6 MAINTENANCE
6-10
6.2.5 Troubleshooting an analog input module
Check item Remedial action
Power supply module’s POWER ON LED not lit
Troubleshoot the power supply module
according to the instructions given in
Subsection 6.2.1.
Remote I/O station module’s RI/O LED not lit
Troubleshoot the remote I/O station
module according to the instructions given
in Subsection 6.2.2.
Support program not loaded for the S10/2 α
controller with the analog input module installed in
it
Load the support program to the S10/2 α
controller’s CPU.
(In the case of S10mini CPUs and S10V
LPUs, no such loading is necessary.)
Analog input module not registered in the CPU
Register a data area for the analog input
module by using an available tool.
Input wiring error
Correct the input wiring according to the
information given in Chapters 2 and 4.
GND terminal not connected to mount-base FG
terminal Connect the GND terminal to the FG
terminal provided on the mount base.
Applied input voltage exceeding the rated voltage
Apply the rated input voltage to the analog
input module.
Remote I/O station module’s I/O point count setting
other than 16
(This check item is applicable only to the following
module models: LWA400 thru LWA404, LWA421
thru LWA423, LWA430, and LWA435.)
Set the I/O point count to 16.
None of the above
Replace the analog input module with a
new one.