HV580L Series Frequency Inverter
21
Figure 3-4 Irfpa keyboard installation hole size
3.2 Electrical Installation
3.2.1 Description of Main Circuit Terminals
Description of Main Circuit Terminals of Three-phase AC drive
：
Figure 3-5 HV580L Inverter main circuit terminal distribution
3-2 Description of Main Circuit Terminals of Three-phase AC drive
Terminal
Name
Description
R
、
S
、
T
Three-phase power
supply
input terminals
Connect to the three-phase AC power supply
（
+
）、（
-
）
Positive and negative
terminals of DC bus
Common DC bus input point
Connect the external braking unit to the AC drive of
37kW and above (220 V) and 18.5 kW and above.
（
+
）、
PB
Connecting terminals of
braking resistor
Connect to the braking resistor for the AC drive of 30
kW and below (220 V) and 15 kW and below
(other voltage classes).
P
、（
+
）
Connecting terminals of
external reactor
Connect to an external reactor.
U
、
V
、
W
AC drive output terminals Connect to a three-phase motor.
Grounding terminal
Must be grounded.
3.2.2 Precautions on the Wiring
：
1
）
Power input terminals L1, L2 or R, S, T
：
● The cable connection on the input side of the AC drive has no phase sequence requirement.
● The specification and installation method of external power cables must comply with the local safety
regulations and related IEC standards.
2
）
DC bus terminals (
＋
), (
－
):
