CDE360 Vector Control AC Drive Chapter 3 Mechanical and Electrical Installation
Remarks:
A. Input power supply R,S,T
Connect R,S,T to the input sides of the AC drive. The phase sequence is not needed.
B. P+,P- terminals of the DC bus
Terminal (+) and (-) of the DC bus have residual voltage after the power is switched off.After
the indicator of the charge goes off and the residual voltage is less than 36V, you can touch
the terminals (+) and (-) of the DC bus. Otherwise, it may result in an electric shock.The
cable length of the braking unit should not be longer than 10 meters. Use twisted pair wire
or pair wires for parallel connection.
C. P+,PB terminals of the braking resistance
As for the types which have braking unit inside the machine, the connecting terminals of the
braking resistance can be valid.The selection of the braking resistance should be
consistent with the recommended values and the cable length should be less than 5 meters.
Otherwise, it may result in the damage to the AC drive.Do not connect the braking
resistance to the DC bus directly. Otherwise, it may result in the damage to the AC drive or
a fire.
D. P1,P+ Connecting terminals P1,P+ of the external reactor
Before connect the external reactor to the AC drive, the jumper between P1 and P+
terminal should be removed.
E. U,V,W Output U,V,W of the AC drive
Do not connect the capacitor or surge absorber to the output terminals of the AC
drive.Otherwise, it may result in the frequent protection or the damage to the AC
drive.When the cable length of the motor is too long, it can result in the electric resonance
due to the distributed capacity. Thus it will result in the damage to the insulation of the
motor or generating big leakage current. As a result, it can trip the over current protection of
the AC drive.If the cable length of the motor is longer than 100 meters, the AC output
reactor should be installed.
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