A
C
D
R/L1
+1 +2
B
S/L2
T/L3
A – Power supply
B – MCCB
C – Drive
D – DC reactor
Figure 7.4 Connecting a DC Reactor
u
Connecting a Surge Absorber
A surge absorber suppresses surge voltage generated from switching an inductive load near
the drive. Inductive loads include magnetic contactors, relays, valves, solenoids and brakes.
Always use a surge absorber or diode when operating with an inductive load.
Note: Never connect a surge absorber to the drive output.
u
Connecting a Noise Filter
n
Input-Side Noise Filter
Drive outputs generate noise as a result
of high-speed switching. This noise flows from inside
the drive back toward the power supply, possibly affecting other equipment. Installing a noise
filter to the input side of the drive can reduce the amount of noise flowing back into the power
supply. This also prevents noise from entering the drive from the power supply.
• Use a noise filter specifically designed for AC drives.
• Install the noise filter as close as possible to the drive.
7.4 Installing Peripheral Devices
194
YASKAWA ELECTRIC TOEP C710606 25D YASKAWA AC Drive J1000 Installation & Start-Up Manual
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