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The software name is indicated on the memory device on the module with letters such as
GSPTM1-
∗∗∗, etc.
CAUTION When handling a module, take anti-static measures such as wearing an earthed
wrist band and placing modules on an earthed conductive mat. Otherwise, many
of the electronic components could suffer damage.
CAUTION After replacing the SPM module, check all of the settings including the data
related to the PLC, IEC103 and IEC61850, etc. are restored the original
settings.
The initial replacement procedure is as follows:
• Switch off the DC power supply.
Hazardous voltage may remain in the DC circuit just after switching off the
DC power supply. It takes approximately 30 seconds for the voltage to
discharge.
• Disconnect the trip outputs.
• Short circuit all AC current inputs and disconnect all AC voltage inputs.
• Unscrew the relay front cover.
Replacing the Human Machine Interface (HMI) Module (Front Panel)
•
Open the front panel of the relay by unscrewing the binding screw located on the left side of the
front panel.
• Unplug the ribbon cable on the front panel by pushing the catch outside.
• Remove the two retaining screws and one earthing screw on the relay case side, then detach the
front panel from the relay case.
• Attach the replacement module in the reverse procedure.
Replacing the Transformer (VCT) Module
CAUTION Before pulling out the transformer module, pull out all other modules. For the
method of pulling out other module, see the section "Replacing other module".
• Open the right-side front panel (HMI module) by unscrewing the two binding screws located
on the left side of the panel.
• Open the left-side front panel by unscrewing the two binding screws located on the right side
of the panel.
• Detach the module holding bar by unscrewing the binding screw located on the left side of the
bar.
• Unplug the ribbon cable on the SPM module by nipping the catch.
• Remove the metal cover by unscrewing the binding screw located at the top and bottom of the
cover.
• Pull out the module.
• Insert the replacement module in the reverse procedure.
Replacing other modules
•
Open the right-side front panel (HMI module) by unscrewing the two binding screws
located on the left side of the panel.
WARNING