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Function library, Function blocks – Lenze EVS9332xK User Manual

Page 170

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Function library

Function blocks

3.2.41

Digital frequency input (DFIN)

3−142

l

EDSVS9332K−EXT EN 4.0

C0427 = 1

A
A

B
B

Z
Z

Fig. 3−106

Control of direction of rotation via track B

CW rotation

Track A transmits the speed

Track B = LOW (positive value at DFIN−OUT)

CCW rotation

Track A transmits the speed

Track B = HIGH (negative value at DFIN−OUT)

C0427 = 2

A
A

B
B

Z
Z

Fig. 3−107

Control of speed and direction of rotation via track A or track B

CW rotation

Track A transmits the speed and direction of rotation (positive value at DFIN−OUT)

Track B = LOW

CCW rotation

Track B transmits the speed and direction of rotation (negative value at DFIN−OUT)

Track A = LOW

Transfer function

DFIN−OUT [rpm]

+ f [Hz] @

60

Number of increments from C0425

Example:

Input frequency = 200 kHz

C0425 = 3 (

¢ a number of increments of 2048 inc./rev.)

DFIN−OUT [rpm]

+ 200000 Hz @ 60

2048

+ 5859 rpm

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