Parker Products COMPAX-M /-S (L) Process velocity Speed, Acceleration and braking time Accel

Positioning and control functions

Process velocity [SPEED]

8.4.3 Process velocity [SPEED]

Unit hardware

/ cable

SPEED

Syntax:

Example:

Process velocity as % of nominal velocity

(Nominal velocity ≡ nominal speed * travel per motor rotation).

♦valid until a new value is programmed.

When in speed control mode , direction of rotation is specified by the prefix.

SPEED value

Value: 0.0000001...100%15, a control parameter (P40..P49) or a variable (V1..V39) e.g. SPEED .P40

Smallest steps = 0.002384min-1

N005: SPEED 70 sets velocity to 70% of nominal speed.

The set velocity can be reduced using the analogue overrride input (X11.6) (see start-up manual).

Connector	assignment
Technical data
Configuration

8.4.4 Acceleration and braking time [ACCEL]

and functions

ACCEL

ACCEL-

Note:

Syntax:

Specification for acceleration and braking time .

♦without prefix: time specification for acceleration and decceleration process.

♦negative prefix: separate time specification for decceleration process.

♦valid until a new value is programmed.

♦Acceleration process can be specified using parameter P94 (see Page 75).

♦

If a travel command is interrupted by STOP or BREAK, the STOP / BREAK – ramp is not executed by ACCEL- but by the value defined as the acceleration time.

ACCEL value

Value: 10...65 000 ms, a control parameter (P40..P49) or a variable (V1..V39) e.g. ACCEL .P40 (timescale = 10 ms)

The negative prefix for the decceleration time specification must be set before the control parameters e.g.: ACCEL- .P40 (P40 > 0)

Positioning	control
Optimization	functions
Interfaces

The time specified in ms applies for nominal velocity		SPEED
(100%). The actual time is proportional to the velocity		100%
selected. Meaning: ta =	SPEED ACCEL	40%
	100%
		ta	ACCEL

Example: N005: ACCEL 300	sets the acceleration and deceleration ramp to 300 ms
N006: ACCEL -200	sets the deceleration ramp to 200 (≡ 200 ms when
	SPEED=100%)

15For asynchronous motors, up to a max. of 300%.

97

Accessories / options

Status

Parameter

Error list