MSDServoDrive AC-AC Operation Manual
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59
[
Appendix
]
Id. no.:CA65642-001 Date:03/2012
to the glossaryto the table of contents
A Appendix
A.1 Permissible current load for servo drives
The maximum permissible servo drive output current as well as the peak current are
dependent on the mains voltage, the motor cable length, the power stage switching
frequency, the design of cooling technology and the ambient temperature. The
maximum permissible current carrying capacity of the servo drives changes with any
change in application related conditions.
A.1.1 Current carrying capacity Size1, air-cooled,
single-phase
Servo
drive
Switching fre-
quency of the
power stage
Ambient
temperature
Rated
current
Peak current [A
eff
]
at
230V
AC
with linear increasing
rotating field
frequency 0 to 5Hz
for inter-
mittent
operation
for
time
1)
[kHz] [°C]([°F]) [A
eff
] 0Hz 5Hz >5Hz [s]
G392-
004A
(Size1)
4 + 45 (+113) 4.0 8.0 8.0 8.0
10
8
+4 0 (+104)
4.0 8.0 8.0 8.0
12 3.7 7.4 7.4 7.4
16 2.7 5.4 5.4 5.4
Data apply for a motor cable length ≤10m
1) Shut-down according to I²t-characteristic
Table A.1 Rated and peak current Size1 (air-cooled, single-phase)
A.1.2 Current carrying capacity Size1 - Size4, air-cooled,
triple-phase
Servo
drive
Switching fre-
quency of the
power stage
Ambient
temperature
Rated current Peak current [A
eff
]
at
400V
AC
at 460V
AC
at 480V
AC
with linear in-
creasing rotating
field frequency
0 to 5Hz
for inter-
mittent
opera-
tion
for
time
1)
[kHz] [°C]([°F]) [A
eff
] [A
eff
] [A
eff
] 0Hz 5Hz >5Hz [s]
G392-004
(Size1)
4 + 45 (+113) 4.0 4.0 4.0 8.0 8.0 8.0
10
8
+4 0 (+104)
4.0 4.0 4.0 8.0 8.0 8.0
12 3.7 2.9 2.7 7.4 7.4 7.4
16 2.7 1.6 1.3 5.4 5.4 5.4
G392-006
(Size1)
4 + 45 (+113) 6.0 6.0 6.0 12.0 12.0 12.0
10
8
+4 0 (+104)
6.0 6.0 6.0 12.0 12.0 12.0
12 5.5 4.4 4.0 11.0 11.0 11.0
16 4.0 2.4 1.9 8.0 8.0 8.0
G392-008
(Size2)
4 + 45 (+113) 8.0 8.0 8.0 16.0 16.0 16.0
10
8
+4 0 (+104)
8.0 7.2 6.9 16.0 16.0 16.0
12 6.7 5.3 4.9 13.4 13.4 13.4
16 5.0 3.7 3.3 10.0 10.0 10.0
G392- 012
(Size2)
4 + 45 (+113) 12.0 12.0 12.0 24.0 24.0 24.0
10
8
+4 0 (+104)
12.0 10.8 10.4 24.0 24.0 24.0
12 10.0 8.0 7.4 20.0 20.0 20.0
16 7.6 5.6 5.0 15.2 15.2 15.2
Data apply for a motor cable length ≤10m.
1) Shut-down according to I²t-characteristic
Table A.2 Rated and peak current Size1 to Size4 (air-cooled, triple-phase)