86 Electrical installation
To access the auxiliary control unit:
1. Open the cubicle door.
2. Remove two fastening screws in the front part of the sliding frame.
3. Press down the knob between the fastening screws and pull the sliding frame out of
the cubicle.
4. Connect the fiber optic cables from the PC to the converter controllers as follows:
• Run the fiber optic cables to the inside of the auxiliary control cubicle.
• Connect one wire to the RDCU unit channel CH3 and the other fiber optic cable to
the NDCU unit of the converter cubicle. For the connectors of the RDCU and
NDCU units, see section Control unit NDCU-33Cx/RDCU-12C on page 36.
To push the sliding frame back into the cubicle:
1. Press down the knob on the back of the unit and push the control unit back into the
cubicle. Fasten with two fastening screws.
2. Close the control unit cubicle door.
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