- General Electric Computer Accessories User Manual

GEH-6385 Reference and Troubleshooting, 2300 V Drives Chapter 4 Wizards •
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• 4-25
Spd reg pos err lim specifies the allowable difference between the speed command
and the speed feedback when the motor is running too slow. If the feedback is less
than the command and the difference between the two is greater than Spd reg pos err
lim, then the drive switches from torque regulation to speed regulation.
Spd reg neg err lim specifies the allowable difference between the speed command
and the speed feedback when the motor is running too slow. If the feedback is
greater than the command and the difference between the two is greater than Spd reg
neg err lim, then the drive switches from torque regulation to speed regulation.
Enter values for the two parameters that specify the maximum allowable speed error.
Related functions
• Speed/Torque Regulator
Drive Commissioning: Torque with Speed Override
Stopping Behavior
When the torque regulator with speed override mode is selected, the drive sets the
output of the regulator to a selected torque reference signal, except when the
difference between the speed command and the speed feedback is too large. When
the error between those two speed signals is too large, the drive begins to control the
motor speed so that it follows the speed command.
When the drive stops, it can stop either as a speed regulator or as a torque regulator.
Select Torque W/Spd Overide to stop the drive in torque regulator mode. Select
Speed Regulator to stop the drive in speed regulator mode.
Related functions
• Speed/Torque Regulator
Drive Commissioning: Torque and Current Limits
Selecting Torque limit res to use Identical Limits will use a single per-unit value to
set the motoring and generating torque limits based on 100% Motor torque and the
current limit based on 100% Motor current.
Selecting Torque limit res for Separate Limits allows the process owner to
selectively limit the drive statically or dynamically.
Drive Commissioning: Torque and Current Limits
Uniform
Torque overload is the overload limit value that will be used for all torque and
current limits based on motor per-unit. A rule populates all torque and current limits
based upon this entry and motor nameplate date.