Danfoss VLT AutomationDrive FC 301 Programming Manual page 580

VLT AutomationDrive FC 301/302
Programming Guide
Parameter 30-21 High Starting Torque Current [%]
Table 1078: Parameter 30-21 High Starting Torque Current [%]
30-21 High Starting Torque Current [%]
Default value: Size related
Conversion index: -1
Set the high starting current that should be applied for the time specified in parameter 30-20 High Starting Torque Time. The in-
creased current will improve the starting torque and starting performance in demanding applications. The high starting torque cur-
rent is valid for VVC+ and flux in speed open loop. The parameter can be used with the following motors:
• SPM
• IPM
• SynRM
• PMaSynRM
Parameter 30-22 Locked Rotor Protection
Table 1079: Parameter 30-22 Locked Rotor Protection
30-22 Locked Rotor Protection
Default value: Size related
Conversion index: -
Available for PM motors only, in flux sensorless mode and VVC
Option Name Description
[0] Off
[1] On Protects the motor from the locked rotor condition. The control algorithm detects a possible locked rotor con-
dition in the motor and trips the drive to protect the motor.
Parameter 30-23 Locked Rotor Detection Time [s]
Table 1080: Parameter 30-23 Locked Rotor Detection Time [s]
30-23 Locked Rotor Detection Time [s]
Default value: Size related
Conversion index: -2
Time period for detecting the locked rotor condition. A low parameter value leads to faster detection.
Parameter 30-24 Locked Rotor Detection Speed Error [%]
Table 1081: Parameter 30-24 Locked Rotor Detection Speed Error [%]
30-24 Locked Rotor Detection Speed Error [%]
Default value: 25%
Conversion index: -1
Detects locked rotor condition for SPMSM at high speed.
Light-load detection
Light-load detection is a feature for lift application to ensure lift evacuation in a direction which requires the least energy (UPS ca-
pacity) during an emergency. When a light-load detection and start signal is received, the drive starts in the selected direction. After
the delay in seconds specified in parameter 30-26 Delay Before Measurements, the drive integrates the current consumption within
the time defined in parameter 30-25 Measurement Duration. After completing current integration for 1 direction, the drive starts in
580 | Danfoss A/S © 2022.12
Parameter type: Range, 0 - 200.0%
Data type: Uint32
Parameter type: Option
Data type: Uint8
+
Parameter type: Range, 0.05 - 1 s
Data type: Uint8
Parameter type: Range, 0 - 100%
Data type: Uint32
Setup: All setups
Change during operation: True
Setup: All setups
Change during operation: True
open-loop mode.
Setup: All setups
Change during operation: True
Setup: All setups
Change during operation: True
Parameter Descriptions
AU275636650261en-000101 / 130R0334