
n
Connecting a DC Link Choke
Ensure the jumper between ter1 and +2 (terminals are jumpered for shipment) is removed when connecting a DC link
choke. The jumper must be installed if no DC link choke is used.
Refer to Connecting a DC Link Choke on page 332
example of DC link choke wiring.
A
C
D
R/L1
+1
+2
B
S/L2
T/L3
A – Power supply
B – MCCB
C – Drive
D – DC link choke
Figure 8.4 Connecting a DC Link Choke
u
Connecting a Surge Suppressor
A surge suppressor suppresses transient voltages generated from switching an inductive load near the drive. Inductive loads
include magnetic contactors, relays, valves, solenoids and brakes. Always use a surge suppressor or diode when operating
with an inductive load.
Note:
Never connect a surge suppressor 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.
B
C
D
A
R/L1
1
2
3
4
E
MCCB
MCCB
S/L2
A – Power supply
B – Input-side noise filter (Model:
LNFB-
oo
)
C – Drive
D – Other control device
Figure 8.5 Input-Side Noise Filter (Single-Phase 200 V)
8.4 Installing Peripheral Devices
332
YASKAWA ELECTRIC SIEP C710606 18F YASKAWA AC Drive – V1000 Technical Manual