6 System Commissioning and Functions NICE3000
new
User Manual
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There is no inter-phase or to-ground short circuit in the U, V, W phases of the controller. There is
no inter-phase or to-ground short circuit in the U, V, W phases of the motor.
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There is no short circuit to ground short circuit on the output side of the transformer.
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There is no inter-phase or to-ground short circuit in the 220 V power supply.
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The 24 V power supply has no short circuit between positive and negative or to-ground short
circuit.
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The CANbus/Modbus communication cable has no short circuit with the 24 V power supply or
short circuit to ground.
Step 4: Check the rotary encoder.
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The encoder is installed reliably with correct wiring.
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The encoder signal cables and strong-current circuit are laid in different ducts to prevent
interference.
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The encoder cables are preferably directly connected to the control cabinet. If the cable is not
long enough and an extension cable is required, the extension cable must be a shielded cable
and preferably welded to the original encoder cables by using the soldering iron.
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The shield of the encoder cables is grounded on the end connected to the controller (only one
end is grounded to prevent interference).
6.1.2 Power-on and Controller State Check
1. Apply the power. Check that the line voltage of the R, S, T phases of the controller is within
380–440 VAC, with the phase unbalance degree ≤ 3%. If it is abnormal, cut off the power,
and check the power supply and the wiring of R, S, T cables on the controller.
2. Check that the power input voltage of the 24V terminal (CN3) on the MCB is 24 VDC±15%.
If it is abnormal, cut off the power; check the switch-mode power supply and check whether
the 24 VDC circuit is wired correctly.
3. Check that the controller is powered on properly.
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