
B–65192EN/02
4. AC LINE FILTER AND SEPARATE
REGENERATIVE DISCHARGE UNIT
19
An AC line filter should be used to reduce the effect of harmonic noise
to the power supply. If two or more servo amplifiers are connected to one
AC line filter, the total continuous output rating of all the connected servo
amplifiers should be kept below the continuous output rating of the AC
line filter.
Estimation of total continuous output rating of the servo motors can be
reduced depending on the load conditions.
[Example of selecting an AC line filter]
Motors : α12/2000 + α12/2000 + α22/2000
1. Continuous output rating of each servo motor
α12/2000: 2.1 kW
α22/2000: 3.8 kW
2. Total continuous output rating of the servo motors
2.1+2.1+3.8=8.0 kW
3. Select the type B AC line filter, whose maximum continuous output
rating is 10.5 kW.
Table 4.1(a) AC Line Filter Specification
AC line filter
Continuous
rated current
Continuous
output rating
Heat genera-
tion
Type A:
A81L–0001–0083#3C
24A 5.4kW Max. 20W
Type B:
A81L–0001–0101#C
44A 10.5kW Max. 70W
Type C:
A81L–0001–0102
100A 23.0kW Max. 50W
4.1
AC LINE FILTER