MD280/MD280N User Manual Mechanical and Electrical Installation
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d˅ Connecting terminals P and (+) of external reactor
When assembling the inverter of above 75G/90P with external reactor, it
needs to remove the connector between terminals of P and (+) and connect
the reactor between them instead.
e˅ Inverter output sides U, V and W:
The inverter output side cannot connect to the capacitor or surge absorber,
otherwise, the frequent inverter protection may be caus ed, or the inverter
may be damaged.
If the wire between the motor and the inverter is too long, electrical
resonance may be caused due to the influence of the distributed capacitance,
thus damaging the motor insulation or produce large leakage current to
trigger inverter over current protection. When the length of the motor cable is
longer than 100 meters, AC output reactor shall be installed.
f˅ Grounding terminal
PE:
The terminal must be grounded reliably, and the resistance of the ground
wire must be less than 0.1ȍ. Otherwise, fault may be caused, or the inverter
may be damaged.
Do not share the grounding terminal
and terminal N of zero line of the
power supply.
3.2.5 Control Terminals and Wiring
1˅The terminals of the control circuit are arranged as shown in the following
diagram:
Fig.3-8 Terminal Layout of the Control Circuit
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