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Section 12
Troubleshooting
1.
Remove all existing configuration for the module in PCM, and write that configuration to the IED.
2.
Switch the IED off and move the HW module.
3.
Switch the IED on, wait for it to start, and then perform a HW reconfig.
4.
Perform a license update in PCM600.
The new module is now available in PCM600 at the new position and is ready to be configured.
12.3
Repair instruction
An alternative is to open the IED and send only the faulty circuit board to Hitachi Power grids for
repair. When a printed circuit board is sent to Hitachi Power grids, it must always be placed in a
metallic, ESD-proof, protection bag. The user can also purchase separate replacement modules.
Most electronic components are sensitive to electrostatic discharge and latent damage may occur.
Please observe usual procedures for handling electronics and also use an ESD wrist strap. A semi-
conducting layer must be placed on the workbench and connected to earth.
Disassemble and reassemble the IED accordingly:
1.
Switch off the dc supply.
2.
Short-circuit the current transformers and disconnect all current and voltage connections from
the IED.
3.
Disconnect all signal wires by removing the female connectors.
4.
Disconnect the optical fibers.
5.
Unscrew the main back plate of the IED.
6.
If the transformer module is to be changed:
•
•
•
•
7.
Pull out the faulty module.
8.
Check that the new module has a correct identity number.
9.
Check that the springs on the card rail are connected to the corresponding metallic area on the
circuit board when the new module is inserted.
10. Reassemble the IED.
If the IED has been calibrated with the system inputs, the calibration procedure must be performed
again to maintain the total system accuracy.
170
Never disconnect the secondary connection of a current transformer circuit without
short-circuiting the transformer's secondary winding. Operating a current transformer
with the secondary winding open will cause a massive potential build up that may
damage the transformer and may cause injuries to humans.
Never connect or disconnect a wire and/or a connector to or from a IED during
normal service. Hazardous voltages and currents are present that may be lethal.
Operation may be disrupted and IED and measuring circuitry may be damaged.
Strictly follow the company and country safety regulations.
Remove the IED from the panel if necessary.
Remove the rear plate of the IED.
Remove the front plate.
Remove the screws of the transformer input module, both front and rear.
© 2017 - 2022 Hitachi Energy. All rights reserved
1MRK 506 377-UEN Rev. L
IP8767-1 v1
M11764-2 v4
M11764-10 v2
M11766-4 v3
Railway application RER670
Commissioning manual
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