Chapter 4 Installation and commissioning
24
Ch
ap
ter 4
+24V
COM
PLC
(Default)
DI1
DI8
COM
PLC
PE
Inverter
Inner power PNP connect mode
External
contactor
+24V
COM
PLC
(Default)
DI1
DI8
COM
PLC
PE
Shielded
cable
Inverter
External power supply PNP
connect mode
External
contactor
External
power supply
+
-
+24V
Diagram 4-16
：
Signal input terminal wiring diagram, open collector PNP connection mode
Note: using an external power supply, PLC and 24 v jumper cap must be removed, otherwise
it will damage the product.
4-6.
Wiring Precautions
Danger
Make sure that the power switch is in the OFF state before wiring operation, or electrical shock
may occur!
Wiring must be performed by a professional trained personnel, or this may cause damage to the
equipment and personal injury!
Must be grounded firmly, otherwise there is a danger of electric shock or fire hazard !
Note
Make sure that the input power is consistent with the rated value of inverter, otherwise which
may cause damage to the inverter!
Make sure that the motor matches the inverter, otherwise which may cause damage to the motor
or activate the inverter protection!
Do not connect power supply to U, V, W terminals, otherwise which may cause damage to the
inverter!
Do not directly connect braking resistor to DC bus (P), (+) terminals, otherwise which may
cause a fire!
※
The U,V,W output end of inverter can not install phase advancing capacitor or RC absorbing
device. The inverter input power must be cut off when replacing the motor
※
Do not let metal chips or wire ends into inside the inverter when wiring, otherwise which may
cause malfunction to the inverter.
※
Disconnect motor or switch power-frequency power supply only when the inverter stops
output
※
In order to minimize the effects of electromagnetic interference, it is recommended that a
surge absorption device shall be installed additionally when electromagnetic contactor and
relay is closer from the inverter.
※
External control lines of inverter shall adopt isolation device or shielded wire.
※
In addition to shielding, the wiring of input command signal should also be aligned
separately, it is best to stay away from the main circuit wiring.
※
If the carrier frequency is less than 3KHz, the maximum distance between the inverter and
the motor should be within 50 meters; if the carrier frequency is greater than 4KHz, the
distance should be reduced appropriately, it is best to lay the wiring inside metal tube.
