NIetz Electric Co.,Ltd
Soft starter SSN/SSA serie User Manual
10
5.
General wiring and external terminal
5.1 Wiring schematic
Note:
1. There are two wiring ways to control starting and stopping the startor externally. They are
three-line and two-line wiring. (See ①and② in the figure above).Start signal is given by
connecting terminal RUN and COM. Stop signal is given by disconnecting terminal RUN and COM
Connect according the figure①，free stop
Connect according the figure②，soft stop
2. In the SSA series product, there is no terminals U1,V1,W1.Because there is inner bypass
contactor。
3. In the SSA series product, the end of start output terminal（+12V/OC）are used interior.
it is strictly prohibited to external wiring。
4.In SSA series product, There is build-in bypass contactor. External terminals” L” and” N”
are added and External 220V power supply is needed for the product which power is above 90KW.
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