Keba ServoOne Series User Manual

Operation Manual ServoOne Supply Unit
32
ID no.: 1101.21B.6-00 Date:04/2020
NOTE:
Further information and technical data on the use of common mode lters
can be found in the Mounting instruction Common Mode Filter CMR (ID no.:
1101.13B.x).
4.2.5 Use of common mode filters
If the axis controllers are supplied by the PSU, situations may occur which render the
mains input lter ineffective. The use of a common-mode lter in the DC link supply of
the axis controllers is an effective remedy here.
Recommendation:
The common mode choke should be used if
a. There are more than 3-4 DC axis controllers in the network
or
b. the motor cable lengths per axis controller are greater than 10m or in total of
all axes be more than 30m.
NOTE:
Typical servo cables have approx. 0.47nF/m, corresponds to a permissible
total leakage capacitance of approx. 15nF.
Note that values of 1nF/m or more can easily be achieved with cables with
larger cross-sections (> 35 mm
2
).
See also condition “d”.
or
c. In which users use special motors that have a higher parasitic capacitance to
earth.
Typical servomotors have approximately 10nF.
or
d. the total leakage capacitance is > 45nF
Rule of thumb for total discharge capacity:
Electrical installation

Keba ServoOne Series Specifications

General

Brand	Keba
Model	ServoOne Series
Category	Power Supply
Language	English