User Manual

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F. DRIVE SYSTEM SOFT START
The DI-225 dryer is equipped with either a Series 154-A11NB OR 21B or 25 soft start control.
ALL soft start controls are factory preset. Re-adjustment should not be necessary
1. Series 154-A11NB OR 21B Drive System Soft Start
Wiring
The Series 154-A11NB OR 21B is a motor controller and is used with an electromechanical
motor starter. The controller is wired after the motor starter as shown in the illustration below.
The output side of the motor starter should be wired to the line terminals on the controller,
(L1,L2,L3). The load terminals on the controller, (T1,T2,T3) then Should be wired to the motor.
When the motor starter is turned on, 3-phase (3) power will be applied to the input to the
controller. The controller will then ramp up the voltage to the motor.The duration of the ramp will
depend on the setting of the soft start adjustment. When the motor starter is turned off, the
controller will reset and will be ready for the starter to be turned on again.
NOTE: THE STARTER MUST REMAIN OFF FOR A MINIMUM OF ½ SECOND TO ALLOW
THE CONTROLLER TO COMPLETELY RESET IF THE STARTER IS TURNED ON
BEFORE THE CONTROLLER RESETS, AN ACCEPTABLE SOFT START MAY BE
ACHIEVED.