Function library
7-172
L
EDSVS9332P-D21 EN 3.0
7.5.43 Digital frequency input (DFIN)
Purpose
Converting and scaling a power pulse current at the digital frequency input X9 into a speed and phase
setpoint. The digital frequency is transferred in a high-precision mode (with offset and gain errors).
C0425
DFIN
DFIN-OUT
C0426
X9
C0427
Fig. 7-128 Digital frequency input (DFIN)
Signal
Source Note
Name Type DIS DIS format CFG List
DFIN-OUT phd C0426 dec [rpm] - -
Function
•
The input X9 is designed for signals with TTL level (see chapter 4.2.8 ”Digital frequency input
X9”).
•
In the event of digital frequency cascade or digital frequency rail, adapt the drive to the
connected encoder or controller via C0425.
•
The input of a zero track is optional.
•
Via C0427 the following input signals can be evaluated:
C0427 = 0
C0427 = 0
A
A
B
B
Z
Z
Fig. 7-129 Phase-delayed signal sequence (CW rotation)
•
CW rotation
– Track A is leading track B by 90° (positive value at DFIN-OUT).
•
CCW rotation
– Track A is lagging track B by 90° (negative value at DFIN-OUT).
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