Time in seconds from MAX FREQUENCY to MIN
FREQUENCY. Ramp time is linear. Factory default setting
enables the COAST TO STOP parameter which disables the
SHUTDOWN RAMP parameter.
Drive frequency will slow down to avoid motor overcurrent
fault. Frequency will not go below MIN FREQUENCY. Screen
will indicate OVERCURRENT DERATE when conditions apply.
Drive frequency will slow down to avoid motor overtemperature
fault. Frequency will not go below MIN FREQUENCY. Screen
will indicate OVERTEMP DERATE when conditions apply.
Output frequency will not go below this value when derating.
PWM OVER MODULATION is added to increase the output
voltage.
If input voltage is below nominal 240 V, output voltage on
voltage doubling drives could be low. Monitor output voltage,
and use this parameter to boost output voltage if necessary.
Programming Tip
Constant pressure parameters are only displayed when System Configuration has been set for constant
pressure. The parameter SYSTEM CONFIG is in the Interface Parameters sub-menu. See Table 16
for details.