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When the 1.1.13 SUBMERSIBLE PUMP parameter is set to NO, the motor will ramp from stop to the maximum
frequency in 12 seconds in a linear fashion as depicted in Figure 19.
To set the minimum frequency, navigate to 1.1.1 MIN FREQUENCY.
Figure 18 – Default Start-Up Ramp Time (1.1.13 SUBMERSIBLE PUMP parameter enabled)
Figure 19 – Start-Up Ramp Time (1.1.13 SUBMERSIBLE PUMP parameter disabled)
CAUTION: Most submersible pump motor manufacturers require the motor to reach 30 Hz within one
second to protect the motor from damage. Factory default ramp time is 0-30 Hz in one second, followed by
the selected ramp time from 30 Hz to maximum frequency.
5.7 Motor Control Methods (V/f vs. Torque Control)
Advanced motor control methods can be selected through Operating Parameters found in Table 23.
V/f Controls
V/f, or volts per Hertz, control is the simplest motor control method and is the default operating mode of the
drive. V/f control requires limited motor data to the drive and is the only control method that will allow multiple
motors to be operated by one drive. If multiple motors are operated, they must all stop and start together.
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