Siemens 670 V2, Руководство по эксплуатации

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Maintenance and Service
9.3 Separating the control unit and the computer unit in the central design
Panel PC 670 V2/870 V2, Control unit
Operating Instructions, Edition 03/2004, CD Documentation and Drivers
9-5
Procedure
1. Isolate the device from the power supply.
2. Open the switch cabinet. The device is now accesible from the rear.
3. To swing away the computer unit: Loosen the four permanent knurl screws attaching the
computer unit to the rear of the control unit, as shown in the mounting cut-out in the
dimensions diagram.
4. Swing the computer unit away. The connectors on the rear of the control unit are now
accessible.
5. In order to dismount the computer unit, remove the cable connectors K1 and K2 between
the computer unit and the control unit.
6. Two mounting rails, whose ends are in the form of lugs, are screwed to the control unit.
Lift the computer unit vertically out of these lugs.
7. Put the computer unit down carefully.
8. Where necessary, also remove the control unit depending on its design: Secure the
control unit against falling out and unscrew it. Or remove the clamps which secure the
control unit to the installation wall, as shown in the mounting cut-out in the dimensions
diagram.
Figure 9-3 Swinging the computer unit down away the control unit, as seen from above