39
Control Keypad
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7.6.4.1
Soft start parameters
The RVS-DXM
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Start Curve 0
±
Standard curve (Default). The most stable and suitable curve for the motor, preventing
prolonged starting and motor overheating.
Note:
When RVS-DXM
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-
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Start curves 1-3 -
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- 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 high pressure in the
pipes.
Start Curves 1, 2, 3
±
During acceleration, before reaching peak torque, the Pump Control Program
automatically controls the voltage ramp-up, reducing peak torque.
Choice of three pump control acceleration curves: 0!, 1!, 2!, 3!
Start Curve 4 (Torque)
±
Torque Controlled acceleration, provides a smooth time controlled torque ramp for
the motor and the pump.
Note:
Always start with Start Curve 0. If towards end of acceleration, peak torque is too high (pressure is too high),
proceed to Curve 1, 2, 3 or 4 if necessary.
