Carotron Elite Pro EPN020-000, Instruction Manual

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version of this signal is also provided (113).
Current Feedback (IFB, 102, filtered-112, Read-Only)
The
Current Feedback is derived from two of the three incoming AC lines and is used by the
PI loop to regulate the amount of armature current in the motor. The signal is also used to
provide
IR Compensation to the AFB signal in the Velocity Loop. A filtered version of this
signal is also provided (112).
Current Error (103, Read-Only)
The
Final Current Demand and the Current Feedback sum together to form the Current
Error signal for the PI loop.
Current Proportional Gain (107)
The
Current Proportional Gain scales the output based upon the Current Error . Increasing
the gain improves the response of the drive but can also increase overshoot.
Current Integral Time (108)
The
Current Integral Time adjustment eliminates steady-state error. Decreasing the integral
time improves the response of the drive. However, setting it too low can cause oscillation.
The adjustment is in seconds and corresponds to the amount of time that the signal would
take to integrate from 0 to maximum with 100%
Current Error .
Regen Mode (206, ICR)
When set to False, the
Regen Mode parameter allows Elite Pro Regenerative models to
emulate a non-regen drive by clamping the negative portions of the Velocity Integral and
Current Integral signals. On non-regen drives, this parameter is ignored.
Open Loop Armature Select (104, ICR)
When set to True, the conduction angle sent to the trigger board can be manually controlled
by
Open Loop Armature Setpoint . This diagnostic tool can be used to eliminate the Velocity
and Current Loops from the control. Care must be taken when using this mode because there
is no current limit protection. Remember to set this parameter back to False once diagnosis is
complete.
Open Loop Armature Setpoint (105)
When
Open Loop Armature Select is True, Open Loop Armature Setpoint sets the
Conduction Angle directly. The Ramp Output parameter writes to this parameter in the
factory preset configuration.
Conduction Angle (106, Read-Only)
Normally the
Conduction Angle is the output of the Current Loop. However, if Open Loop
Armature Select is True, the Conduction Angle equals Open Loop Armature Setpoint .
This signal controls the SCRs in the armature bridge circuit.
Armature Amps (114, Read-Only)
Armature Amps displays the actual motor current from the Filtered Current Feedback
signal and the Nameplate Motor Current parameters.