Delta MMC120 Bedienungsanleitung PDF herunterladen (Seite 36)

Motion Control Parameters MMC120 Linear Motion Control Module

36 Delta Computer Systems, Inc. 360/254-8688

Bits 15 and 16 - Acceleration and Deceleration MODE Select

These two bits define four acceleration/deceleration modes:

Bit #

15 16

Mode0- RampRate(Default)------------------------------- 0 0

Mode1- RampRate*1000--------------------------------- 0 1

Mode2- Distancetospecifiedspeed-------------------------- 1 0

Mode 3 - Time to specified speed ---------------------------- 1 1

In Mode 0, the ACCELERATION and DECELERATION parameters define the ramp rate in position units

per second per second.

In Mode 1, the ACCELERATION and DECELERATION parameters define the ramp rate in 1000 position

units per second per second. For example, with position units of 0.001 inches, an ACCELERATION of 50

will cause the axis to accelerate at 50 inches per second per second.

In Mode 2, the parameters define the distance to accelerate or decelerate to the specified SPEED.

In Mode 3, the parameters define the time to accelerate or decelerate to the specified SPEED.

ACCELERATION (Default: 1000)

This parameter defines the acceleration ramp rate used by the axis for a move. It has four meanings

depending on the setting of the acceleration/deceleration mode.

In Mode 0, this parameter is interpreted as acceleration rate and is expressed in Position Units/sec/sec. If

SCALE is set so one Position Unit equaled .001", then a value of 200 would represent an acceleration rate of

0.200 inches/sec/sec.

The relationship between the ramp distance, ACCELERATION and SPEED is:

SPEED x SPEED

Ramp Distance = 

ACCELERATION x 2

SPEED x SPEED

ACCELERATION = 

Ramp Distance x 2

In Mode 1, the ramp rate is one thousand times larger:

SPEED x SPEED

Ramp Distance = 

ACCELERATION x 2000

In Mode 1, if one Position Unit equals .001", an ACCELERATION of 200 would represent an acceleration

rate of 200 inches/sec/sec.

In Mode 2, this parameter defines the distance to the specified SPEED, and in Mode 3, it defines the time to

the specified speed.

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Delta MMC120 Bedienungsanleitung Seite 36