Version 3.11 | HPI Combi Flow User Guide | 49www.lafert.com
9.5.2. Parameter Group 7 – Motor Control
Par. Function Setting Range Default Notes
P7-01 Motor Stator Resistance
0.000 – 65.535
Motor
Rating
Dependent
Motor data, measured or calculated during
the autotune.
P7-06 is used only for PM motors.
P7-03 Motor Stator Inductance (d)
0.0000 – 1.0000
P7-04 Magnetising Current (id)
Drive Dependent
P7-05 Motor Leakage Coefficient (Sigma)
0.000 – 0.250
P7-06 Motor Q Axis Inuctance (Lsq)
0.0000 – 1.0000
P7-09 Over Voltage Current Limit 0.0 – 100.0% 5.0%
P7-10 Load Inertia Constant 0 - 600 10
P7-11 Pulse Width Minimum Limit 0 - 500
P7-12 V/F Mode Magnetising Delay Time 0 – 5000ms
Motor Rating
Dependent
Sets the motor alignment time in PM modes.
P7-14 Low Frequency Torque Boost 0.0 – 100.0%
Motor Rating
Dependent
For PM Motors, applies a torque boost current
at low frequency, % x P1-08.
P7-15 Torque Boost Frequency Limit 0.0 – 50.0%
Motor Rating
Dependent
For PM motors, determines the frequency, % x
P1-09 when the boost current is removed.
P7-18 Over Modulation
0 Disable
0
1 Enable
2 Auto
P7-19 BLDC Light Load Optimization
0 Disable
1
1 Enable
P7-20 Modulation Mode
0 3-Phase Modulation
1
1 2-Phase Modulation
9.6. Parameter Group 8 – Application Function Specific Parameters
Par. Name Minimum Maximum Default Units
P8-01 Pump Stir Interval Duration 0 60000 0 Minutes
This parameter can be used to set a pre-defined period of inactivity, whereby if the drive remains in standby mode for a period of time
exceeding the limit, stir function is activated, and the drive will operate at preset speed 7 (P2-07) for the time set in P8-02. This allows
the pump to stir, preventing sediment from settling and avoiding a blockage.
P8-02 Pump Stir Activation Time 1 6000 10 Seconds
Set the time period that the stir function will be active once triggered (excludes time for deceleration to stop).
P8-03 Pump Clean Function Select 0 3 - -
This parameter configures the drive conditions that will cause activation of the automatic pump clean function. When activated, the
pump clean will operate the pump at preset speed 5 (P2-05) for the time period set in P8-04, followed by Preset Speed 6 (P2-06)
(Providing P2-06 <> 0) for the time set in P8-04, before resuming normal operation. During the cleaning cycle, the ramp time set in P8-
05 is used for both acceleration and deceleration, and overrides P1-03 and P1-04.
Where possible, P2-05 and P2-06 may be set to negative values, to allow the pump to be reversed. For best results, it is recommended
to use as high a speed as possible, and to adjust P8-05 to allow a short acceleration time whilst avoiding over current trips.
0 : Disabled.
1 : Active on start-up only. The pump cleaning function operates every time the pump is started.
2 : Active on start-up and high current detection. The pump cleaning function operates every time the pump is started,
and also in the event that the drive detects a possible pump blockage during normal operation. This requires the Motor Current Profile
Monitoring function to be active and commissioned for correct operation, see parameter P8-06.
3 : Active on high current detection only. The pump cleaning function operates only when a possible pump blockage is
detected during normal operation. This requires the Motor Current Profile Monitoring function to be active and commissioned for
correct operation, see parameter P8-06.
NOTE The pump clean function can also be activated by digital input configured in group 9 parameters.
P8-04 Pump Clean Time 0 600 0 Seconds
Sets the time period for the operation of the pump cleaning cycle. When bi-directional pump cleaning is selected, the time interval is
used twice, once in each direction.
P8-05 Pump Clean Function Ramp Time 0 6000 30 Seconds
Independent ramp rate used only for the pump automatic cleaning function (see P8-03) when the motor is Accelerated as part of the
cleaning cycle.
9
Extended Parameters
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