Toshiba 18 - 1250 A Benutzerhandbuch

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Appendix 5 (cont.) External OL Relay Applications 

 2S2W Motors 
2 speed / 2 winding motor applications require a separate OLR sized for 
each set of windings. These would need to be external OLRs. 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

In this example:  
The TE Series is used ahead of an existing 2S2W starter, which 
already has separate OLRs for each speed. Dry Aux. contacts of the 
2S2W starter are used to provide a Run command to the TE Series so 
that all existing controls can be used. In addition, another dry Aux. of the 
Fast contactor is used to select Ramp 2. When started in Slow, Ramp 1 
(default) is used. If started in Fast, different ramp settings are necessary 
so Ramp 2 is used. (See section 4.2.5.a for Dual Ramp info.)