Sourcetronic ST600 - Page 37

Frequency Inverter ST600 Series High-Performance Multifunction VFD Installation Guide
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Sign
Terminal Name
Function description
Standard model
037G3 and lower
Standard model
045G3–110G3
Standard model
132G3 and higher
R, S, T
Main circuit power input
3PH AC input terminal,
connected to the grid.
U, V, W
VFD output
3PH AC output terminal,
connected to the motor in
most cases.
P1
Not available
Not available
DC reactor terminal 1
P1 and (+) connect to
external DC reactor
terminals.
(+) and (-) connect to
external braking unit
terminals.
PB and (+) connect to
external braking resistor
terminals.
(+)
Braking resistor
terminal 1
Braking unit
terminal 1/
Braking resistor
terminal 1
DC reactor terminal 2/
Braking unit
terminal 1
(-)
-
Braking unit terminal 2
PB
Braking resistor
terminal 2
Braking resistor
terminal 2
Not available
PE
Grounding resistor less than 10Ω
Grounding terminal for
safe protection; each
machine must carry two
PE terminals and proper
grounding is required.
Note:
1. It is not recommended to use an asymmetrical motor cable. If there is a symmetrical grounding
conductor in the motor cable besides the conductive shielded layer, ground the grounding conductor
on the VFD end and motor end.
2. Brake resistor, brake unit (045G3 and up) and DC reactor (132G3 and up) are optional parts.
3. Route the motor cable, input power cable and control cables separately.
4. "None" means this terminal is not for external connection.
5. When sharing the DC bus, the VFDs must be the same in power and must be simultaneously
powered on or off.
6. In shared DC bus running mode, current balance on the VFD input side must be considered during
wiring, and equalizing reactors are recommended to be configured.