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Setting Up Parameters

Scaling parameter is set to a value higher than the motor encoder density, the drive encoder

output density will equal that of the motor encoder.

Positive Direction Group

The Positive Direction group consists of a clockwise (CW) Motor Rotation Radio Button or

a counter-clockwise (CCW) Motor Rotation Radio Button.

The motion will move in either CW direction or counter-clockwise CCW direction.

Perspective of rotation is defined as you face the motor shaft from the front of the motor.

CW Motor Rotation Radio Button

Select this radio button for applications in which CW motor rotation is considered to be

motion in the positive direction (increasing absolute position).

CCW Motor Rotation Radio Button

Select this radio button for applications in which CCW motor rotation is considered to be

motion in the positive direction (increasing absolute position).

Status Online Tab (Online Only)

The Status Online tab is visible when online and consists of the Motor Position group, Drive

Information group, Motor Velocity group, Module Information group, Master Feedback

group, and the Torque group (shown in figure 26).

Motor Position Group

Position Command

Position command is the commanded motor position sent to the EN drive by the FM-3. This

parameter does not take following error into account. See also PosnFeedback and

FollowingError. Units are in user units.

Position Feedback

Feedback position is the actual motor position in user units. PosnCommand minus the

PosnFeedback is the FollowingError

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 Position

Motor encoder position in encoder counts. This position reflects the feedback position of the

motor and is not scaled into user units. This is a signed 32 bit value.

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Emerson FM-3 Installationshandbuch Seite 41