33
• Control Keypad
Soft Start Curves 1-3
- Pump Control - Induction motors produce peak torque of up to 3 times the rated
torque towards the end of starting process. In some pump applications, this peak may cause a pressure surge in the
pipes.
Soft Start Curves 1, 2, 3
– During acceleration before reaching peak torque, the Pump Control Program
automatically controls the voltage ramp-up, thus, reducing peak torque.
Choice of four pump control acceleration curves: 0!, 1!, 2!, 3!
Soft Start Curve 4 (Torque)
– Torque Controlled acceleration - This provides a smooth time-controlled
torque ramp for the motor and the pump.
Note
:
Always start with
Soft
Start Curve 0
. If towards the end of ramp, peak torque is too high (pressure is too high)
proceed to
Soft Start Curve 1, 2, 3
or
4
in that order.
Содержание ASTAT XT QT 0008U Series
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Страница 17: ...17 Technical Specifications 3 4 I O Wiring...
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