2-60 Parameter Descriptions
7000-TD002A-EN-P – September 2007
Speed Control Parameters
Speed Reference [Speed Reference]
Linear Number: 278
Minimum Value: -120.0 Hz
Maximum Value: 120.0 Hz
Access Level: Monitor
Read/Write: Read Only
This parameter is the drive speed reference, which is the output of the speed ramp.
Speed Feedback [Speed Feedback]
Linear Number: 289
Minimum Value: -120.0 Hz
Maximum Value: 120.0 Hz
Access Level: Monitor
Read/Write: Read Only
This parameter is the calculated speed feedback after filtering. For Sensorless drives, the speed is
calculated from the applied stator frequency while for Pulse Tach drives, the speed is measured from the
tachometer feedback. The speed feedback is positive for forward rotation and negative for reverse
rotation.
Speed Error [Speed Error]
Linear Number: 472
Minimum Value: -10.00 Hz
Maximum Value: 10.00 Hz
Access Level: Advanced
Read/Write: Read Only
This parameter is the speed error obtained by subtracting the speed feedback from the speed reference.
It is useful for checking the step response of the speed loop.
Stator Q-Axis Current Command [MtrTorque CurCmd]
Linear Number: 292
Minimum Value: -4.000 pu
Maximum Value: 4.000 pu
Access Level: Advanced
Read/Write: Read Only
This parameter specifies the Q-axis or torque-producing Stator current command obtained by dividing the
torque reference by the flux reference. It is positive for motoring and negative for regenerating.
Inverter Torque Current Command [InvTorque CurCmd]
Linear Number: 294
Minimum Value: -4.000 pu
Maximum Value: 4.000 pu
Access Level: Advanced
Read/Write: Read Only
This parameter specifies the inverter torque current command and is obtained from Stator Q-Axis Current
Command. The inverter produces almost all of the torque-producing current to the motor.
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