Emerson FM-3 Manual de instalación descargar pdf (Pagina 53)

Setting Up Parameters

active. Absolute Position Valid is active upon successful completion of a home or the

DefineHome destination is activated.

To recover from a software travel limit, a jog may be commanded in the opposite direction of

travel. For example, if a software travel limit - is hit, then the axis can be jogged in the +

direction.

Software Travel Limit +

If the absolute position is greater than or equal to this value the Software Travel Limit Plus

Active source shall activate.

A rising edge occurs when the absolute position is greater than or equal to the parameter

Software Travel Limit +. A falling edge will be generated as soon as the above is not true.

Software Travel Limit -

If the absolute position is less than or equal to this value the Software Travel Limit Minus

Activate shall activate.

A rising edge occurs when the absolute position is less than or equal to the parameter

Software Travel Limit -. A falling edge will be generated as soon as the above is not true.

Rotary Group

Rotary Rollover Check Box

Check this box to enable (or disable if not checked) the rotary rollover feature.

Rotary Rollover

This parameter is used in rotary applications and determines the position at which the internal

position counter will be reset to zero.

Example:

The user has a rotary table application with distance user units of degrees, 360.00 degrees/1

rev. The Rotary Rollover would be set to a value of 360°.

The motor is traveling in the positive direction. As the feedback position reaches 359.999 and

continues on, the feedback position will reset (or roll-over) to zero. If the motor changes

direction and travels in the negative direction, the position will rollover at 0 to 359.999

degrees and count down. The resolution of the rotary rollover point is determined by the

Distance Units Decimal Places parameter on the Setup - User Units view in the PowerTools

FM-3 software.

If an absolute index is used with a non-zero rotary rollover point, the FM-3 will calculate the

shortest path to its destination and move in the required direction.

To force the motor to run a certain direction, use the Rotary Plus or Rotary Minus type of

indexes.

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Emerson FM-3 Manual de instalación Pagina 53