Emerson unidrive m200 - Final Torque Reference; Final Current Reference; Motoring Current Limit; Regenerating Current Limit

I
Trated
= motor rated power factor (05.010) x motor rated current (05.007).
Sign of Torque Producing Current (04.002) Sign of frequency Direction of motor torque
+ + Accelerating
- + Decelerating
+ - Decelerating
- - Accelerating
Parameter 04.003 Final Torque Reference
Short description Shows the final torque reference
Mode Open‑loop
Minimum −VM_TORQUE_CURRENT Maximum VM_TORQUE_CURRENT
Default Units %
Type 16 Bit Volatile Update Rate 1ms
Display Format Standard Decimal Places 1
Coding RO, FI, VM, ND, NC, PT
The FinalTorqueReference (04.003) will display the same as TorqueReference (04.008) as a percentage of motor rated torque.
Parameter 04.004 Final Current Reference
Short description Shows the final current reference after the current limits
Mode Open‑loop
Minimum −VM_TORQUE_CURRENT Maximum VM_TORQUE_CURRENT
Default Units %
Type 16 Bit Volatile Update Rate 1ms
Display Format Standard Decimal Places 1
Coding RO, FI, VM, ND, NC, PT
The FinalTorqueReference (04.003) is converted into the FinalCurrentReference (04.004) by applying a torque to current conversion and by applying
the FinalCurrentLimit (04.018). The torque to current conversion is applied as follows:
|OutputFrequency (05.001)| ≤ MotorRatedFrequency (05.006)
Current reference = FinalTorqueReference (04.003)
|OutputFrequency (05.001)| > MotorRatedFrequency (05.006)
Current reference = FinalTorqueReference (04.003) x | OutputFrequency (05.001) | / MotorRatedFrequency (05.006)
It is possible to disable the flux compensation by setting FluxControlCompensationDisable (05.028) to 1.
Parameter 04.005 Motoring Current Limit
Short description Defines the current limit used when the motor is being accelerated away from standstill
Mode Open‑loop
Minimum −VM_MOTOR1_CURRENT_LIMIT Maximum VM_MOTOR1_CURRENT_LIMIT
Default 165.0 Units %
Type 16 Bit User Save Update Rate 16ms
Display Format Standard Decimal Places 1
Coding RW, VM, RA
The MotoringCurrentLimit (04.005) limits the current when the motor is being accelerated away from standstill. The RegeneratingCurrentLimit
(04.006) limits the current when the motor is being decelerated towards standstill. If the SymmetricalCurrentLimit (04.007) is below the
MotoringCurrentLimit (04.005) then it is used instead of the MotoringCurrentLimit (04.005). If the SymmetricalCurrentLimit (04.007) is below the
RegeneratingCurrentLimit (04.006) then it is used instead of the RegeneratingCurrentLimit (04.006).
The maximum possible current limit (VM_MOTOR1_CURRENT_LIMIT [MAX]) varies between drive sizes with default parameters loaded. For some
drive sizes the default value may be reduced below the value given by the parameter range limiting.
Parameter 04.006 Regenerating Current Limit
Short description Defines the current limit used when the motor is being decelerated towards standstill
Mode Open‑loop
Minimum −VM_MOTOR1_CURRENT_LIMIT Maximum VM_MOTOR1_CURRENT_LIMIT
Default 165.0 Units %
Type 16 Bit User Save Update Rate 16ms
Display Format Standard Decimal Places 1
Coding RW, VM, RA
See MotoringCurrentLimit (04.005).
Unidrive M200 Parameter Reference Guide
Issue: 01.05.00.10
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