Inertia Compensation Torque - Emerson unidrive sp User Manual

Parameter Keypad and
Menu 2
structure display
2.32 Acceleration select bit 0
2.33 Acceleration select bit 1
2.34 Acceleration select bit 2
2.35 Deceleration select bit 0
2.36 Deceleration select bit 1
2.37 Deceleration select bit 2
Drive modes Open-loop, Closed-loop vector, Servo
Bit SP
Coding
1
Update rate 4ms read
These bits are provided for control by logic input terminals for external ramp selection (see Pr 2.10 and Pr 2.20).
2.38

Inertia compensation torque

Drive modes Closed-loop vector, Servo
Bit SP
Coding
Range Closed-loop vector, Servo
Update rate 4ms write
The motor and load inertia (Pr 3.18), motor torque per amp (Pr 5.32) and the rate of change of the ramp output (Pr 2.01) are used to produce a torque
feed forward value that should accelerate or decelerate the load at the required rate. This value can be used as a feed forward term that is added to
the speed controller output if Pr 4.22 is set to one. Pr 2.38 shows the torque value as a percentage of rated active current.
50
Parameter Parameter
x.00 description format
FI DE Txt VM DP ND RA NC NV
FI DE Txt VM DP ND RA NC NV
1 1
±1,000.0 %
www.controltechniques.com
Advanced parameter
Macros
descriptions
PT US RW BU
1 1
PT US RW BU
1 1
Serial comms Electronic
Performance
protocol nameplate
PS
PS
Unidrive SP Advanced User Guide
Issue Number: 10
RFC mode