Siemens TV Converter Box 611 User Manual

Coupled motors 

 

4.1 Parallel operation of several motors 

 

CAUTION 

 

If the angular position is set incorrectly, this can result in a thermal overload of one of the 

two parallel motors during continuous operation at the rated load. 
For this reason, it may be necessary to reduce the torque depending on the load to prevent 

shutdown triggered by the PTCs. 
Mechanical fine-tuning should always be carried out. 

 

Motor arrangements 

When two motors are operated in parallel, they can be arranged as follows: 

Tandem arrangement 

 or 

 

The cable outlets of the motors are located on the same side. When standard motors are 

used, they both rotate in the same direction. 

Janus arrangement 

 

The cable outlets of the motors are located on opposite sides. When standard motors are 

used, the stoker must be connected (as described below) in such a way that both motors 

rotate in the same direction. 
Master and stoker 
The "stoker" refers to the second motor on an axes, which does not rotate in the same 

direction as the first motor ("master") with respect to the U V W phases. To ensure that the 

stoker rotates in the same direction, the V and W phases must be swapped when the stoker 

is connected. 
 

4.1.1 

Power connection for parallel operation 

Table 4- 1 

Power connection when two torque motors are operated in parallel 

Converter 

Master 

Stoker 

Tandem arrangement 

Stoker 

Janus arrangement 

U2 

U 

U 

U 

V2 

V 

V 

W 

W2 

W 

W 

V 

 

1FW6 Built-in torque motors 

56

 

Configuration Manual, 05/2009, 6SN1197-0AD00-0BP7