Lenze EVF9325 User Manual

Configuration
Function blocks
Master frequency input (DFIN)
8
8.2
8.2.2

8.2-7
EDSVF9333V EN 3.0-06/2005
In C0425 the output signal can be adapted:
ƒTotheencoderatX9or
ƒ To the upstream controller with master frequency cascade/master
frequency bus.
Transfer function
Calculating the output signal:
DFIN-OUT [rpm] = f[Hz]⋅
60
C0425
Example:
The input frequency amounts to 200 kHz, the number of increments
corresponds to 2048 inc/rev. (C0425 = 3).
DFIN-OUT [rpm] = 200000 Hz ⋅
60
2048
= 5859 rpm
Signal adaptation
Signal adaptations other than by squaring in C0425 can be achieved by
connecting a function block.
Example:
The function block CONV3 shall c onvert the speed signal into a quasi analog
signal.
Calculating the output signal at CONV3:
CONV3-OUT [%] = f[Hz]⋅
0.4
C0425
⋅
C0950
C0951
Interconnecting function blocks:
CONV3
CONV3-OUTCONV3-IN
C0953
C0952
C0950
C0951
C0425
C0427
DFIN
DFIN-OUT
C0426
X9
fb_dfin_01
Fig. 8.2-6 Digital frequency input (DFIN) with connected converter
 Note!
If a master frequency is o utput to DFOUT-AN-IN or DFOUT-DF
(C0540=0orC0540 = 1) and an incremental encoder is
evaluated via X8, the function block DFIN cannot be used
anymore.
IftheinputsignalsatX8orX9areoutputtoX10,(C0540=4or
C0540 = 5), this restriction does not exist.
Adjusting the output signal

Lenze EVF9325 Specifications

General

Brand	Lenze
Model	EVF9325
Category	DC Drives
Language	English