Siemens PC 677B 用户手册

 

Installation / panel-mounting 

 

3.4 Securing the device with clamps 

SIMATIC Panel PC 677B 
Operating Instructions (Compact), 06/2008, A5E02217246-01 

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3.4 

Securing the device with clamps 

Requirement 

 

Accessories 

Display 

 

12" 

15" 

17" 

19" 

6 x 

6 x 

8 x 

8 x 

Clamp 

The clamps are provided with the control unit. 

Tool 

2.5 mm hexagonal spanner 

Procedure 

 

Figure 3-3 

Clamp assembly 

 
1.  Disconnect the device from the power supply. 
2.  Working from the front, insert the device into the 19" rack on the swivel arm or in the 

mounting cut-out. 

3.  Fasten the control unit from the rear using the clamps. 
4.  Tighten the setscrews to a torque of 0.4 - 0.5 Nm. 

IP65 degree of protection 

The plant builder is responsible for the correct installation of the device. 

The degree of protection IP65 is only guaranteed for the front of the device if the ring seal is 

properly applied with the correct size of cutout, the unit has been clamped in place, and the 

instructions below are observed. 

 

NOTICE 

 

Control cabinet installation: Material strength at the mounting cut-out 
Ensure that the material strength at the mounting cut-out is a minimum of 2 mm and a 

maximum of 6 mm. Please follow the specifications for the dimensions in the "Preparing the 

mounting cut-out" section. 
The degrees of protection are only guaranteed when the following is observed: 
• 

The surface plane deviation of the mounting cut-out in relation to the external 

dimensions of the control unit amounts to ≤ 0.5 mm when the control unit is mounted.