Operation Manual ServoOne Supply Unit
63
ID no.: 1101.21B.6-00 Date: 04/2020
5.2.7
Setting DC link capacitance
6.
The settings for the DC voltage regulator depend on the DC link capacitance of
the entire multi-axis system. You will find the DC link capacitances in the operation
manuals for the supply unit and the DC axis controller in the technical data in the
chapter Appendix.
y
Add together the DC link capacitances of all controllers connected to the multi-
axis system.
y
Set the total value for the DC link capacitance in P-1500 (in µF).
NOTe:
The maximum overall capacitance of the multi-axis system DC link for a
ServoOne supply unit BG5 (incl.) must not exceed 10,000 µF, for BG6a (incl.)
20,000 µF and for BG7 (incl.) 25,000 µF.
y
Set the relative controller dynamic performance for the voltage regulator in
P-0405.
Recommended value: 100 %.
NOTe:
In all circumstances the parameter P-0405 must be activated by "double-
clicking" the "value" field and using the "Enter" key, even if you do not make
any change. Otherwise the automatic configuration of the voltage regulator will
not be undertaken.
Figure 5.4 Parameter editor - parameter P-0405 and P-1500
5.2.6
Automatic identification of the DC link capacitance and
the equivalent time constant for the current regulation
5.
The DC voltage regulator in the supply unit regulates the DC link voltage to an
internally specified fixed setpoint. The regulation is dependent on the DC link
capacitance in the multi-axis system and the equivalent time constant for the
current regulation. Both values can and should be determined using the automatic
identification.
NOTe:
The maximum overall capacitance of the multi-axis system DC link for a
ServoOne supply unit BG5 (incl.) must not exceed 10,000 µF, for BG6a (incl.)
20,000 µF and for BG7 (incl.) 25,000 µF.
y
Prior to starting the automatic identification, set the setpoint for the DC link
voltage to 700 V
DC
in parameter P-0410 "CON_VCON_VdcRef".
y
Start the automatic identification by setting parameter P-1501 "SCD_AT_
VdcCAP_Con" to START(2).
As soon as the parameter changes to the value READY(0), the identification procedure is
complete.
The values determined for the total DC link capacitance (P-1500) and the equivalent time
constant for the current regulation (P-0406) are now available for the configuration of the
DC voltage regulator.
NOTe:
In the next step the value determined for the total DC link capacitance
(P-1500) chap. 5.2.7, p. 63 must be checked for plausibility and, if
necessary, replaced with the value known. The setpoint for the DC link voltage
(P-0410) chap. 5.2.8, p. 64 should also be set.
Commissioning
Summary of Contents for ServoOne Series
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