Emerson FM-3 Manual de instalación descargar pdf (Pagina 168)

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FM-3 Programming Module Reference Manual

Indexes 0 and 1 are both Absolute type indexes and use the following parameters:

Index Name - Is a 12-character string that gives a descriptive name to an index. Index0 has

been named Position A, and Index1 Position B as seen in Figure 18.

Index Type – Select the desired type of index from the list box. Index0 has been defined as

an Absolute type of index. This means the load will travel to an exact position with respect

to the home reference point. This index will cause motion in either a positive or negative

direction depending on current position of the load with respect to the home reference point.

Position – Is a signed value that specifies the absolute position for the load at the completion

of the index. For absolute indexes, direction of travel is determined by the starting position

of the index. Index 0 has a Position of 10 Inches, and Index 1 has a Position of 0 Inches.

Velocity – Is the target velocity of the index profile. The velocity parameter is unsigned and

is always greater than zero. Direction of the index is not determined by the velocity, but by

the Distance/Position parameter. Velocity of the indexes in the example are 100 inches/min.

Acceleration – Is the average acceleration rate used when accelerating to the target index

velocity.

Deceleration - Is the average deceleration rate used when decelerating to zero speed, or to the

new target velocity.

Incremental Index

The following parameters were setup for Index2:

Index Name - Is a 12-character string that gives a descriptive name to an index. Index2 has

been named Position C as seen in Figure 19.

Index Type – Select the desired type of index from the list box. Index2 has been defined as

an Incremental type of index. This means that the load travels an exact distance from the start

of the index.

Distance – The distance is a signed value that specifies the distance the load will travel from

the start position. The sign of this parameter determines direction of travel for the load. The

distance of Position C has been set to 2.5 inches.

Velocity – Is the target velocity of the index profile. The velocity parameter is unsigned and

is always greater than zero. Direction of the index is determined not by the velocity, but by

the Distance/Position parameter.

Acceleration – Is the average acceleration rate used when accelerating to the target index

velocity.

Deceleration - Is the average deceleration rate used when decelerating to zero speed, or to the

new target velocity.

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Emerson FM-3 Manual de instalación Pagina 168