Application
SERVOPACK Model
Noise Filter
Connection
Recommended Noise Filter*
Model
Specifications
0.5 kW SGDB-05AN
(Correct)
LF-310
Three-phase 200 VAC, 10 A
1.0 kW
SGDB-10AN •
LF-315 Three-phase 200 VAC, 15 A
1.5 kW
SGDB-15AN
2.0 kW SGDB-20AN
o-
; 1
(Incorrect)
LF-320 Three-phase 200 VAC, 20 A
3.0 kW SGDB-30AN
LF-330
Three-phase 200 VAC, 30 A
5.0 kW SGDB-50AN
LF-340 Three-phase 200 VAC, 40 A
6.0 kW
SGDB-60AN
LF-350
Three-phase 200 VAC, 50 A
7.5 kW SGDB-75AN
LF-360
Three-phase 200 VAC, 60 A
11.0 kW
SGDB-1AAN LF-380K
Three-phase 200 VAC, 80 A
15.0 kW SGDB-1EAN
FN258-100
Three-phase 200 VAC, 100 A
5.7.1 Noise Control
E Correct Grounding
Motor Frame Grounding
If the Servomotor is grounded via the equipment frame, switching noise current (Cf dv/dt) will
flow from the SERVOPACK power unit (PWM) through motor stray capacitance (Cf). Always
connect the Servomotor ground terminal (FG) to the SERVOPACK ground terminal to pre-
vent adverse effects from switching noise. Be sure to ground the ground terminal.
SERVOPACK SG 0 V
If the reference input line is subjected to noise, ground the SG 0 V line. If the main circuit wiring
for the motor is in a metal conduit, ground the conduit as well as the junction box. Always ground
to one point only.
■ Using a Noise Filter
IMPORTANT
Use an inhibit-type noise filter to block noise from the power supply line. Tabl e 5.3 lists recom-
mended noise filters for each SERVOPACK. Also install a noise filter on the power supply line
for peripheral equipment if needed.
Always observe the installation and wiring instructions shown in Figs. 5.5 to 5.8. Incorrect use of a noise filter
reduces its benefits.
Table 5.3 Noise Filters
These noise filters other than model FN258-100 are made by Tokin Corp. Tokin
Corp. noise filters are available from Yaskawa. Contact your nearest Yaskawa
sales representative for those noise filters. A noise filter type FN258-100 is made
by SCHAFFNER.
5 -14
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