Epsilon EP-I Indexing Drive and FM-2 Indexing Module Reference Manual

Following Error

The Following Error is the difference between the Position Command and the Position Feedback. It is positive when the Position Command is greater than the Position Feedback.

Encoder Feedback

The motor position in encoder counts since power up when the value was set to zero. This is a signed 32 bit value. This is set to zero when the Absolute Position Valid output function is activated.

Position Feedback

This is set to zero when the Absolute Position Valid output function is activated.

Velocity Group

Analog Command

Velocity Command

The Velocity Command is the actual command received by the velocity loop.

Velocity Feedback

This parameter is the actual feedback motor velocity in RPMs.

Torque Group

Analog Torque

Torque Command

This parameter returns the torque command value before it is limited. The torque command may be limited by either the Torque Limit (if the Torque Limit Enable input function is active) or current foldback.

Torque Cmd Limited

Torque Feedback

Actual Command

This is the sum of all torque commands applied in summation mode.

Drive Status Group

Drive Status

This reflects the state of the diagnostic LED on the drive. (i.e., Ready, Indexing, Homing, Jogging, etc.).

Foldback RMS

This parameter accurately models the thermal heating and cooling of the drive and motor. When it reaches 100 percent, current foldback will be activated.

Shunt Power RMS (Epsilon only)

This parameter models the thermal heating and cooling of the drive internal shunt. This parameter indicates the percent of shunt capacity utilization. When this value reaches 100 percent the drive will generate an RMS Shunt Power Fault.

Segment Display

Character currently being displayed by the diagnostic display on the front of the drive.

Bus Voltage

Displays the actual measured voltage on the DC power bus.

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Emerson P/N 400518-02 manual Drive Status Group