Moog MSD G393-004, Operation Manual, Page: 67 / 90

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MSD Servo Drive DC-AC Operation Manual
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Appendix
Project planning
67
Id.-No.: CA97554-001 Date: 06/2012
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In addition to the total power tap, the total DC link capacitance of the axis network also
needs to be considered. The maximum total DC link capacitance of the AC-AC servo
drive must not be exceeded. In this regard refer to table A.6 and to table A.5 on page
65:
AC-AC servo
drive
internal
DC link capacitance [µF]
max. total
DC link capacitance [µF]
Air cooling Liquid cooling
Mains voltage
400 V AC
Mains voltage
460 V AC or
480 V AC
G392-004 400 - 800 800
G392-006 400 - 800 800
G392-008 725 - 1355 1355
G392-012 725 - 1355 1355
G392-016 / G395-016 1230 1230 2460 1734
G392-020 / G395-020 1230 1230 2460 1734
G392-024 / G395-024 2000 2000 2504 2000
G392-032 / G395-032 2000 2000 2504 2000
G392-045 / G395-053 430 430 5100 5100
G392-060 / G395-070 900 900 5100 5100
G392-072 / G395-085 900 900 5100 5100
G392-090 / G395-110 1060 2120 9200 9200
G392-110 / G395-143 2120 2120 9200 9200
G392-143 / G395-170 3180 4240 9200 9200
G392-170 / G395-210 4240 4240 9200 9200
G395-250 - 3600 60000 60000
G395-325 - 5400 60000 60000
G395-450 - 7200 60000 60000
Table A.6 DC link capacitance and Maximum total DC link capacitance of the AC-AC servo drives
!
ATTENTION!
•
Observe switching on sequence
The mains voltage is only allowed to be switched on after switching on the
24 V DC supply voltage for the control electronics and conclusion of the
initialisation phase.
•
Observe power classes
It is only allowed to connect DC-AC servo drives of lower or the same
power class to an AC-AC servo drive.
•
Observe maximum number of axes
It is allowed to operate a maximum of six DC-AC servo drives on one sup-
plying AC-AC servo drive.
Calculation example: Feed from a AC-AC servo drive
Two DC-AC servo drives G393-024, two DC-AC servo drives G393-060 and one
DC-AC servo drive G393-090 (air-cooled) are to be connected to an AC-AC servo drive
G392-170.
Calculation: 1 x 4240 µF + 2 x 504 µF + 2 x 900 µF + 1 x 1060 µF = 8108 µF
Result: The AC-AC servo drive is adequately dimensioned with a maximum
total DC link capacitance of 9200 µF.
NOTE: Note that not only the DC link capacitances of the DC-AC servo drives,
but also of the supplying AC-AC servo drive, need to be considered.
A.7.7 External components
When using a AC-AC servo drive as the supply source you will need additional compo-
nents:
• Mains filter
• Mains choke
• Braking resistor
• EMC fixings
See MSD Servo Drive Ordering Catalog (Id.-No.: CDL 29950-en).