18 function library – Lenze 8400 User Manual

Page 1411

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Lenze · 8400 protec HighLine · Reference manual · DMS 3.0 EN · 03/2013 · TD05

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18

Function library

18.1

Function blocks | L_SRFG_1

_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

Loading the ramp function generator
When bLoad is set to TRUE, the ramp function generator is loaded with the signal at nSet_a. This

value is accepted immediately and output at nOut_a. There is no acceleration or deceleration via an

S shape. As long as bLoad = TRUE, the ramp function generator remains inhibited.

Acceleration/Deceleration time and S-ramp time
The acceleration/deceleration time and the S-ramp time for jerk-free acceleration can be set

separately.

• Acceleration/Deceleration time = Time until the nOut_a output value has reached the nIn_a

input value.

• S-ramp time = Time until the ramp function generator operates at maximum acceleration.

[18-64] Signal flow

C01042/1

-199.99

s

199.99 Pos. limit

• Initialisation: 100.00 %

C01042/2

-199.99

s

199.99 Neg. limit

• Initialisation: -100.00 %

C01040/x

: Acceleration/Deceleration time

C01041/x

: S-ramp time

Parameter

Possible settings

Info

nIn_a

t

nOut_a

t

nDeltaOut_a

t

Œ









Œ

+100 %

-100 %

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