INVERTER{terminal function of main circuit}
input power supply: r s t
grounding cable: g
DC bus: - +
motor wiring: u v w
braking resistor: pb
the main circuit terminal function is shown as below table.conduct correct wiring
according to the corresponding functions.
TERMINAL CODE FUNCTION DESCRIPTION
r s t power supply input terminal ' it connects to 3- phase ac power supply or single phase ac power supply.
u v w are inverter's output terminal.it connects to 3 phase ac motor
- + connects to the connecting terminal of braking unit. - + they are
respectively the dc bus's anode and cathode.
+, pb braking resistor connecting terminal.one end of the resistor connects to
+; the other end connects to pb
G g grounding terminal;connecting to the grounding.
exterior devices and optional parts
description of mccb
used to rapidly cut off the inverter's power supply and prevent the inverter and its circuit's
a fault from causing power supply fault.
description of mc
at the fault of inverte's it is used to cur off the main power supply and avoid of restarting
following power failure or inverter fault.
description of acl
it is used to improve the input power factory and reduce upper harmonics and restrict the
power supply's surging.
description of nf
it is used to reduce the radio interference caused by inerter. when the wiring distance
between motor and inverter is below 20 meters' it is recommended to connect to the
power supply side.when the wiring distance between motor and inverter is above 20
meters' it is recommended to connect to the output side.
description of r* ub*
it is used when the braking torque cannot meet the requirement. it is suitable for the
occasion with large initial load and frequent braking fast stop.
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