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17 function library – Lenze E84DSxxx User Manual

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Lenze · 8400 protec StateLine · Reference manual · DMS 4.2 EN · 03/2013 · TD05

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17

Function library

17.1

Function blocks | L_Transient_1

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17.1.43.3 Function 2: Evaluate rising and falling signal edges

[17-25] Switching performance for function selection "2: High and low edge"

Functional sequence

1. A signal change (FALSE/TRUE edge or TRUE/FALSE edge) at the bIn input sets the bOut output to

TRUE.

2. After the parameterised pulse duration has elapsed, the bOut output is reset to FALSE unless

another signal change has taken place at the bIn input.

• In case of another signal change at the input bIn, the pulse time restarts to elapse, i.e. the

output bOut can be retriggered.

Pulse duration

TRUE

FALSE

bOut

t

TRUE

FALSE

bIn

t

Œ

Œ

Œ