Symmetrical Current Limit; Torque Reference/Torque Mode Selector; Current Controller Kp Gain/Current Controller Ki Gain; Motor Thermal Time Constant 1 - Emerson Unidrive M200 Parameter Reference Manual

Parameter

04.007 Symmetrical Current Limit

Short description Defines the symmetrical current limit
Mode Open‑loop
Minimum −VM_MOTOR1_CURRENT_LIMIT
Default 165.0
Type 16 Bit User Save
Display Format Standard
Coding RW, VM, RA
See Motoring Current Limit (04.005).
Parameter 04.008 Torque Reference
Short description Defines the torque reference
Mode Open‑loop
Minimum −VM_USER_CURRENT
Default 0.0
Type 32 Bit User Save
Display Format Standard
Coding RW, VM
See Final Torque Reference (04.003).
Parameter 04.011 Torque Mode Selector
Short description Defines the torque mode used by the drive
Mode Open‑loop
Minimum 0
Default 0
Type 8 Bit User Save
Display Format Standard
Coding RW
If Torque Mode Selector (04.011) = 0 the ramp system defines the Post Ramp Reference (02.001) unless the current limits are active, and so the motor
is frequency controlled. If Torque Mode Selector (04.011) = 1 the torque controller defines the Post Ramp Reference (02.001), and so the motor is
torque controlled.
Parameter 04.013 Current Controller Kp Gain
Short description Defines the current loop controller proportional gain
Mode Open‑loop
Minimum 0.00
Default 20.00
Type 32 Bit User Save
Display Format Standard
Coding RW
Current Controller Kp Gain (04.013) and Current Controller Ki Gain (04.014) are the proportional and integral gains of the current controller.
Refer to Torque and current control .
Parameter 04.014 Current Controller Ki Gain
Short description Defines the current loop controller integral gain
Mode Open‑loop
Minimum 0.000
Default 40.000
Type 32 Bit User Save
Display Format Standard
Coding RW
See Current Controller Kp Gain (04.013).
Parameter

04.015 Motor Thermal Time Constant 1

Short description Set to the thermal time constant for the motor
Mode Open‑loop
Minimum 1
Default 179
Type 16 Bit User Save
Display Format Standard
Coding RW
A single time constant thermal model is provided that can be used to estimate the motor temperature as a percentage of its maximum allowed
temperature. The input to the model is the Current Magnitude (04.001). Throughout the following discussion Motor Rated Current (05.007) is used in the
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Maximum VM_MOTOR1_CURRENT_LIMIT
Units %
Update Rate 16ms
Decimal Places 1
Maximum VM_USER_CURRENT
Units %
Update Rate 1ms
Decimal Places 1
Maximum 1
Units
Update Rate 16ms
Decimal Places 0
Maximum 4000.00
Units
Update Rate Background read
Decimal Places 2
Maximum 600.000
Units
Update Rate Background read
Decimal Places 3
Maximum 3000
Units s
Update Rate Background read
Decimal Places 0
Unidrive M200 Parameter Reference Guide
Issue: 01.05.00.10