Siemens PANEL PC 877 operating instructions Separating the control unit from the computer unit

Maintenance and service

12.3 Separating the control unit from the computer unit

12.3Separating the control unit from the computer unit

Introduction

The control unit is separated from the computer unit to carry out repairs or to replace the control unit, for example.

Procedure

1.Disconnect the device from mains.

2.Open the switchgear cabinet. The device is now accessible from the back.

3.To swing away the computer unit (1): Loosen the four knurled screws (2) which attach the computer unit to the rear of the control unit (3).

Figure 12-1 Separating the control unit from the computer unit

4.Swing the computer unit (1) away. The connectors on the back of the control unit (3) are now accessible.

12-4	SIMATIC Panel PC 877
	Operating instructions, Release 07/2006, A5E00877780-01