Yaskawa J1000 Compact V/f Control Drive - Manual (Page 187)

n Connecting a DC Link Choke
Ensure the jumper between terminals +1 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 187 for an 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 7.4 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.
7.4 Installing Peripheral Devices
YASKAWA ELECTRIC TOEP C710606 26D YASKAWA AC Drive – J1000 Quick Start Guide 187
7
Peripheral Devices & Options