Maintenance

4.2Detaching the operating unit from the computing unit

It may at some stage become necessary to separate the operating unit from the computing unit, e.g. to replace the operating unit.

4.2.1Panel PC 670

Swinging open the

To swing the computing unit away from the operating unit, proceed as

computing unit

follows:

1.Undo the knurled screws which secure the computing unit to the rear side of the operating unit.

2.Swing the computing unit away to the left, whereby the two left clips act as hinges and thus prevent an unintentional releasing of the computing unit:

Clips

90°

Mounting rail

Computing unit swung away by

Computing unit

 

Compu-

 

ting unit

 

Mounting rail

 

Opera-

 

ting unit

 

Fig. 4-1 Swinging the computing unit away from the operating unit (viewed from above)

You can now access the connections on the rear panel of the operating unit.

4-2

SIMATIC Panel PC 670 / 870 Operating Unit, Equipment Manual

Edition 07/01

Page 34
Image 34
Siemens PC 870 manual Detaching the operating unit from the computing unit, Panel PC