Pump Soft Start - Sevcon MillipaK 4QPM Manual

Features
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Pump Soft Start

The MillipaK units may be fitted with a Pump Soft Start feature. This allows a pump motor (up to
120A) to be connected directly to the controller and eliminates the need for a contactor. It also has
the added benefit of providing a 'soft start' to the pump motor by gently ramping up the voltage
over a pre-determined period. After triggering the pump will remain active for as long as the
trigger input remains active or the pre-set timer expires, whichever is the shorter.
Pump Soft Start Ramp Up Delay
Calibrator Menu Reference:
Minimum Maximum
0.1S 1.0S
Pump Soft Start Timer
Calibrator Menu Reference:
Minimum Maximum
0.5S 10.0S
WARNING: The pump soft start option, when fitted, is NOT current limited and
care should be taken not to exceed the maximum current specified by
the controller rating.
MillipaK 4QPM Controller Manual
Immediate
11.04
Step Size Typical Value
0.1S 0.1S
Immediate
11.05
Step Size Typical Value
0.1S 2.0S
Optional Features/Pump Soft Start
Page 46 13/08/03