Siemens PC 677B 用户手册

 

Connecting 

 

4.2 Connecting the 120 V / 240 V AC power supply 

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

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Localized information 

For countries other than the USA and Canada:  
240 V supply voltage 

This device is equipped with a safety-tested power cable which may only be connected to a 

grounding outlet. If you choose not to use this cable, you must use a flexible cable of the 

following type: Min 18 AWG conductor cross-section and 15-A / 250-V shockproof connector. 

The cable set must be compliant with the safety regulations and stipulated IDs of the country 

where the system is to be installed.  
For the USA and Canada:  
For the United States and Canada, a CSA or UL-listed power cord must be used. 
The connector must be compliant with NEMA 5-15. 
120 VAC power supply 

Use a flexible power cord which is approved to UL and CSA, and which has the following 

features: Type SJT with three leads, min. 18 AWG conductor cross-section, max. 4.5 m in 

length and parallel ground contact connector 15 A, min. 125 V. 
240 VAC power supply 

Use a flexible power cord which is approved to UL and CSA, and which has the following 

features: Type SJT with three conductors, min. 18 AWG conductor cross-section, max. 

length 4.5 m, and tandem grounded connector 15 A, min. 250 V. 

Connecting 

 

How to connect the device to the 120 V AC / 240 V AC power supply 
1  Ensure that the On/Off switch is in '0' position 

(Off) when you plug in the power cord in order 

to avoid unintentional startup of the device.  

2  Connect the equipotential bonding. 
3  Insert the power cable in the electrical socket. 

 

 

 

 

4  Fasten the cable with the supplied power plug 

latch, if necessary.