INVT GD300-004G-4 - Page 33

Goodrive300 Series VFD Installation guide
28
Terminal
Terminal name
Function description
380V (≤30kW)
380V (≥37kW)
500V (≤18.5kW)
500V (≥22kW)
660V
P1
/
DC reactor terminal
1
P1 and (+) are connected with the terminals of the
DC reactor.
(+) and (-) are connected with the terminals of the
braking unit.
PB and (+) are connected with the terminals of
the braking resistor.
(+)
Braking resistor
1
DC reactor terminal
2, braking unit
terminal 1
(-)
/
Braking unit
terminal 2
PB
Braking
resistor 2
/
PE
380V/500V/660V: the grounding
resistor is less than 10 Ohm
Protective grounding terminals. Every machine is
provided with 2 PE terminals as the standard
configuration. These terminals must be grounded
with proper techniques.
A1 and
A2
Control power supply terminal
Optional parts for 380V VFDs, standard parts for
660V VFDs (connected with external 220V control
power supply), enabling a VFD to use an auxiliary
power supply when no power is applied in the
input main circuit, thus facilitating the
commissioning of the VFD and improving safety
during the commissioning.
Note:
• Do not use an asymmetrically constructed motor cable. If there is a symmetrically constructed
grounding conductor in the motor cable in addition to the conductive shield, connect the grounding
conductor to the grounding terminal at the VFD and motor ends.
• Braking resistor, braking unit and DC reactor are optional parts.
• Route the motor cable, input power cable and control cables separately.
• If the terminal description is "/", the machine does not provide the terminal as the external terminal.
4.3.3 Main circuit terminal wiring
1. Connect the ground line of input power cable to the ground terminal of VFD (PE) directly, and
connect 3PH input cable to R, S and T and fasten up.
2. Connect the ground line of motor cable to the ground terminal of the VFD, and connect the 3PH
motor cable to U, V, W and fasten up.
3. Connect the brake resistor which carries cables to the designated position.