Configuration
Basic configurations
8.2.5 Phase synchronism
8-25
L
EDSVS9332S-D11 EN 3.0
8.2.5.2 Phase trimming
The phase trimming can be changed via C0473/3. It is displayed via C0536/3. Phase trimming can
also be carried out via another analog signal source:
z Analog output of a function block
z Motor potentiometer
z Analog terminal
z Keyboard
z Automation interface or system bus
The input of the phase trimming can be multiplied in C0529.
This serves to change the rotor position by up to 20000 revolutions:
z Negative values = CCW offset
z Positive values = CW offset
Resolution: 65536 INC/rev.. = 1 rev. * C0529
8.2.5.3 Following error limit
The following error limit can be set in absolute values in increments via C0255. The setting range is:
0 … 1.8*10
9
increments.
When reaching the following error limit a signal is generated which is evaluated via ”Monitoring”. This
signal can be evaluated with the priority (TRIP, MESSAGE or WARNING) required by the user.
When setting CINH, the phase difference is set to zero. Thus, neither the signal ”following error limit”
is generated any longer.
8.2.5.4 Processing of the zero pulse (flying synchronising)
If the zero pulses are not used for the master frequency processing, a phase synchronism with a
constant phase offset is achieved.
Initial situation
SlaveMaster
Δφ
Δφ = phase offset
n
n
n = Speed
Fig. 8-3 Initial situation when processing the zero pulse (Δφ≠0)
If this phase offset is to be corrected to 0, either
z homing is required or
z the zero pulses of the master frequency input and the feedback system are to be processed.
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