Advanced Setup - SJE Rhombus VARIOspeed LCD Manual De Inicio Rápido

Parameter List

2. Advanced Setup:

Hand Frequency (P. 4)
Set the Hand Frequency to the fixed frequency at which the pump will run while the HAND/OFF/AUTO switch is in the
HAND position. Default value: 50Hz
1st Acceleration Time (P. 7) – From Submersible well pumps
Set the 1st Acceleration Time to the rate at which the output frequency will accelerate from 0 Hz to the Thrust Bearing
Switch Frequency. This time is based on the time the VFD would take to accelerate from 0 Hz to 60 Hz. Example: If the
pump is required to accelerate from stop to 30 Hz in 1 second the 1st Acceleration Time should be set to 2 seconds.
Default value: 2 sec
1st Deceleration Time (P. 8) – From Submersible well pumps
Set the 1st Deceleration Time to the rate at which the output frequency will decelerate from the Thrust Bearing Switch
Frequency to a stop. This rate is based on the time the VFD would take to decelerate from 60 Hz to 0 Hz. Example: If
the pump is required to decelerate from 30 Hz to a stop in 4 seconds the 1st Deceleration Time should be set to 8 sec-
onds. Default value: 2 sec
Thrust Bearing Switch Frequency (P. 147) – From Submersible well pumps
The Thrust Bearing Switch Frequency should be set to the frequency at which the acceleration and deceleration rates
change. This is typically used on submersible type pumps, where the manufacturer requires a fast acceleration from a
stop to 30 Hz for proper thrust bearing operation. Default value: 30Hz
Maximum Frequency (P. 125)
The Maximum Frequency must be set to limit the output frequency and prevent the pump from operating faster than its
nameplate frequency. Contact your pump and motor manufacturer for operation above 60 Hz. Default value: 60Hz
High Pressure (P. 131)
Set the High Pressure setting to the pressure at which the VFD output will shut off due to high system pressure. The
VFD will activate the High Pressure Alarm after the system pressure has exceeded the High Pressure setting for the
High Pressure Delay Time. If system pressure drops below the High Pressure setting, the high pressure alarm will
automatically reset and normal operation of the VFD will resume. If the number of automatically reset faults has exceed-
ed five (default), the VFD must be manually reset before normal operation will resume. Default value: 95 psi
High Pressure Delay Time (P. 1370)
Set the High Pressure Delay Time to the amount of time that the system pressure exceeds the High Pressure setting
before the VFD is faulted. The High Pressure Delay Time is measured in seconds. Default value: 2 sec
PID Proportional Term (P. 129)
The PID Proportional Term is intended to be adjusted by advanced users only. The PID Proportional Term is used to
adjust the reaction of the output frequency to changes in the system pressure. Decreasing the PID Proportional Term
will allow the VFD to make larger corrections to the output frequency with differences between the Set Pressure and
actual system pressure. Increasing the PID Proportional Term will allow the VFD to make smaller corrections to the out-
put frequency with differences between the Set Pressure and actual system pressure. Default value: 100%
PID Integral Term (P. 130)
The PID Integral Term is intended to be adjusted by advanced users only. The PID Integral Term is used to adjust how
quickly the output frequency reacts to changes in the system pressure. Decreasing the PID Integral Term will allow the
VFD to make quicker corrections to the output frequency with differences between the Set Pressure and actual system
pressure. Increasing the PID Integral Term will allow the VFD to make slower corrections to the output frequency with
differences between the Set Pressure and actual system pressure. Default value: 1 sec
Pressure Sensor Maximum Range (P. 935)
If using a different transducer other than supplied, set the Pressure Sensor Maximum Range to the full span rating of the
pressure transducer. The Set Pressure and Start Pressure Differential values must also be updated after changing the
Pressure Sensor Maximum Range, as these values are automatically scaled based on the Pressure Sensor Maximum
Range. Default value: 200 psi
VARIOspeed ® LCD Quick Start Manual 7