Emerson FM-3 manual Fault.Reset, Fault.#.Active, Fault.#.Counts, FeedforwardsEnable, Feedhold

Models: FM-3

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Parameter Descriptions

5 = Module travel limit plus

6 = Module travel limit minus

7 = Module program fault

All other bits are not used. A "1" in these bit locations indicates the specific fault is active, and a "0" is inactive.

Reset Faults

Fault.Reset

Resets faults that do not require a power down. This event is "or"ed with the reset button on the drive.

Active Fault

Fault.#.Active

The specified fault is active. See the help index for more information on faults and recovery from them.

Fault Counts

Fault.#.Counts

The module stores the total number of times the specific fault has occurred since it was manufactured.

Enable Feedforwards

FeedforwardsEnable

This parameter may be setup on the Tuning view or through a program, and enables feedforward compensation. When feedforwards are enabled, the accuracy of the Inertia and Friction settings are very important. If the Inertia setting is larger than the actual inertia, the result could be a significant overshoot during ramping. If the Inertia setting is smaller than the actual inertia, following error during ramping will be reduced but not eliminated. If the Friction is greater than the actual friction, it may result in velocity error or instability. If the Friction setting is less than the actual friction, velocity error will be reduced, but not eliminated.

Feedhold

Feedhold

When this destination is activated the motor will decelerate to a stop in the time specified by the FeedholdDecelTime parameter. When it is deactivated the motor will accelerate back up to the programmed speed in the same amount of time. It is used to hold motion without cancelling the move in progress. If a feedhold is activated during an index the motor will

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Page 165
Image 165
Emerson FM-3 manual Fault.Reset, Fault.#.Active, Fault.#.Counts, FeedforwardsEnable, Feedhold