3-32
For a simultaneous inrush for multiple Servo Drivers, select a no-fuse-breaker with a 20-ms allowable
current greater than the total inrush current shown in the following table for the applicable Servomotor
models.
Servo Driver
Inrush current (Ao-p)
Control-circuit power supply
Main-circuit power supply
R88D-WTA3HL to -WT02HL
30
90
R88D-WTA3H to -WT04H
35
90
R88D-WT05H to -WT10H
60
130
R88D-WT15H
60
130
R88D-WT20H/-WT30H
60
140
R88D-WT50H
60
140
R88D-WT60H
65
140
D
Surge Absorbers
Use surge absorbers to absorb surges from power supply input lines due to lightning, abnormal volt-
ages, etc. When selecting surge absorbers, take into account the varistor voltage, the amount of surge
immunity, and the amount of energy resistance. For 200-V AC systems, use surge absorbers with a
varistor voltage of 470 V. The surge absorbers shown in the following table are recommended.
Maker
Model
Max. limit
voltage
Surge
immunity
Type
Remarks
Okaya Electric
I d
i
C
L d
R
S
A
S
V-781BYZ-2
783 V
1,000 A
Block
Between power supply lines
y
Industries Co., Ltd.
R
S
A
S
V-781BXZ-4
783 V
1,000 A
Between power supply line
grounds
Note 1.
Refer to the manufacturers’ documentation for operating details.
Note
2.
The surge immunity is for a standard impulse current of 8/20
µ
s. If pulses are wide, either decrease the
current or change to a larger-capacity surge absorber.
System Design and Installation
Chapter 3
AUDIN - 7 bis rue de Tinqueux - 51100 Reims - France - Tel : 03.26.04.20.21 - Fax : 03.26.04.28.20 - Web : http: www.audin.fr - Email : [email protected]
