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Function library

Function blocks

3.2.59 S−shaped ramp function generator (SRFG)

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EDSVS9332S−EXT EN 2.0

3.2.59 S−shaped ramp function generator (SRFG)

Purpose

The function block serves to direct the input signal via a jerk−limited ramp generator (S shape) in order

to avoid setpoint step−changes.

C1040

C1041

C1045/1

SRFG1

SRFG1-OUT

SRFG1-IN

C1045/2

SRFG1-SET

C1046

SRFG1-LOAD

C1042

C1043

C1044

SRFG1-DIFF

Fig. 3−156 S−shaped ramp function generator (SRFG1)

Signal

Source Note

Name Type DIS DIS format CFG List

SRFG1−IN a C1045/1 dec [%] C1042 1 input

SRFG1−SET a C1045/2 dec [%] C1043 1 Starting value for the ramp function generator, will be

accepted if SRFG1−LOAD = High

SRFG1−LOAD d C1046 bin C0144 2 HIGH = accepts the value at SRFG1−SET and provides it

at SRFG1−OUT; SRFG1−DIFF always remains at 0 %

SRFG1−OUT a − − − − Output limited to ±100 %

SRFG1−DIFF a − − − − Output limited to ±100 %, provides the acceleration of

the ramp function generator

SRFG1−LOAD

l Via digital input SRFG1−LOAD, the ramp function generator is loaded (set) with the signal from

SRFG1−SET.

l This value is immediately accepted, i.e. there is no acceleration/deceleration via S shape (the

output skips to this value).

l As long as SRFG−LOAD = HIGH, the ramp function generator remains inhibited.

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Lenze EVS9332xS Manual do Utilizador Página 219