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Operational Overview

Analog Outputs

The drive has two 8 bit Analog Outputs which may be used for diagnostics, monitoring or

control purposes. These outputs are referred to as Channel 1 and Channel 2. They can be

accessed from the Command Connector on the drive or from the diagnostics output pins

located on the front of the drive.

Each Channel provides a programmable Analog Output Source.

Analog Output Source options are:

• Velocity Command

• Velocity Feedback

• Torque Command (equates to Torque Command Actual parameter)

• Torque Feedback

• Following Error

Default Analog Output Source:

Each channel includes a programmable Analog Output Offset and an Analog Output Scale.

This feature allows you to “zoom in” to a desired range effectively increasing the resolution.

The units for both of these parameters is dependent upon the Analog Output Source selection.

Analog Output Offset units:

• Velocity Command = RPM

• Velocity Feedback = RPM

• Torque Command = Percent of continuous torque for selected motor

• Torque Feedback = Percent of continuous torque for selected motor

• Following Error = Revs

Analog Output Scale units:

• Velocity Command = RPM/volt

• Velocity Feedback = RPM/volt

• Torque Command = Percent of continuous torque/volt for selected motor

• Torque Feedback = Percent of continuous torque/volt for selected motor

• Following Error = Revs/volts

Channel Output Source Offset Scale

1 Velocity Feedback 0 600 RPM/volt

2 Torque Command 0 30 percent/volt for selected motor

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Emerson FM-3 Betriebsanweisung Seite 50