Function library
Function blocks
9.2.26 Digital frequency output (DFOUT)
9-102
L
EDSVS9332S-D11 EN 3.0
9.2.26.2 Output of an analog signal
For this purpose, set code C0540 = 0. The value applied at input DFOUT-AN-IN is converted into a
frequency.
Transfer function
f[Hz]= DFOUT − AN − IN [% ] ⋅
Increments from C0030
100
⋅
C0011
60
Example:
DFOUT-AN-IN = 50 %
C0030 = 3, this corresponds to a number of increments of 2048 inc/rev.
C0011 = 3000 rpm
f[Hz]= 50 % ⋅
2048
100
⋅
3000
60
= 51200 Hz
Generating an index pulse
An artificial index signal can be generated for the output frequency.
1. Activate function by LOW → HIGH edge at input DFOUT-SYN-RDY.
2. A LOW → HIGH edge at terminal X5/E5 generates 360° later the index pulse. After this, every
360° an index pulse is generated according to C0030.
3. The index pulse is automatically shifted by the value C0545.
Tip!
This procedure must be done after every mains switching.
9.2.26.3 Output of a speed signal
z Set C0540 = 1.
– This setting only converts the value at input DFOUT-DF-IN into a frequency.
Transfer function
f [Hz] = DFOUT-DF-IN [rpm] ⋅
Increments from C0030
60
Example:
DFOUT-DF-IN = 3000 rpm
C0030 = 3, this corresponds to a number of increments of 2048 inc/rev.
f [Hz] = 3000 [rpm] ⋅
2048
60
= 102400 [Hz ]
Generating an index pulse
An artificial index signal can be generated for the output frequency.
1. Input DFOUT-SYN-RDY = set edge of LOW → HIGH.
2. A LOW-HIGH edge at terminal X5/E5 generates 360° later the index pulse. After this, every
360° an index pulse is generated according to C0030.
3. The index pulse can be shifted by +360° via C0545 (65536 inc = 360°).
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