The 902
and 903 Series three phase SCR controllers are designed to function as a
master/slave system. The Master or Slave will be identified as either a (902
Series) two triac or (903 Series) three triac controller, which may be
connected in the line or in the Delta or Wye respectively.�
Each three phase Master or Slave requires a
separate three phase circuit connected to its specific KW load.� A 901-D Series Logic is mounted on the
master for driving the power switch sections.�
Slave controllers used "stand alone", without a Master
controller function as a "zero firing" three phase solid state
contactor.
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