ACD320user manual
3. 4 Main Circuit Terminals andWiring
Installation and wiring
! Danger
★Wiring can only be done after the mains input is cut off, otherwise therewill be
danger of electric shock!
★Only qualified and trained engineer can perform thewiring, otherwise there will be
danger of electric shock!
★Grounding cable must be grounded, otherwise there will be danger of electric shock
or fire!
! Danger
★Please confirmthe mains voltage level is same with that of the inverter, otherwise the
inverter may be damaged!
★Make sure the ratings of the drivenmotor are in compliance with the inverter,
otherwise the motor may be damaged or the inverter may be in protection status!
★Do not confuse the input terminals with the output terminals (U, V,W), otherwise
there will be danger of damaging the inverter!
★Brake resistor cannot be connected between the DC bus terminals (+) and (-),
otherwise fire may occur!
（1）Main Circuit Terminals of Inverter
Terminals
Description
R/L1、S/L2、T/L3
U、V、W
B1、B2（DC+）
AC input line terminals
Motor connection
Connection for the braking resistor (option)
P1/B2(DC+)、DC-
Connection for the braking unit (option)
P1/B2（DC+）、P2
E
（2）Notes on Wiring
Connection for the DC Link Reactor (option)
Ground
A. Input power supply R/L1，S/L2 and T/L3:
There is no phase-ration requirement for the input of inverter.
B．DC bus P1/B2(DC+) and (DC-) terminals:
Pay attention that the DC bus terminal（s P1/B2(DC+) and (DC-) still have voltage after power off,
and the user can only touch the terminals after the CHARGE LED turns off and the voltage is
below 36V, otherwise there is a danger of electric shock.
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