Chapter 5 Main Circuit Terminals - Delta CT2000 Series User Manual

Chapter 5 Main Circuit Terminals

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DANGER
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Main power terminals
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Output terminals for main circuit
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Fasten the screws in the main circuit terminal to prevent sparks condition
made by the loose screws due to vibration.
When it needs to install the filter at the output side of terminals U/T1,
V/T2, W/T3 on the AC motor drive. Please use inductance filter. Do not
use phase-compensation capacitors or L-C (Inductance-Capacitance) or
R-C (Resistance-Capacitance), unless approved by Delta.
DO NOT connect phase-compensation capacitors or surge absorbers at
the output terminals of AC motor drives.
DO NOT connect [+1, -], [+2, -], [+1/DC+, -/DC-] or brake resistor directly
to prevent drive damage.
Follow related wiring safety regulations to ensure the isolation of main
circuit.
Do not connect 3-phase model to one-phase power. R/L1, S/L2 and T/L3
has no phase-sequence requirement, it can be used upon random
selection.
It is recommend to add a magnetic contactor (MC) to the power input
wiring to cut off power quickly and reduce malfunction when activating
the protection function of the AC motor drive. Both ends of the MC
should have an R-C surge absorber.
Please use voltage and current within the specification.
When using a general GFCI (Ground Fault Circuit Interrupter), select a
current sensor with sensitivity of 200mA or above and not less than
0.1-second operation time to avoid nuisance tripping.
Please use the shield wire or tube for the power wiring and ground the
two ends of the shield wire or tube.
Do NOT run/stop AC motor drives by turning the power ON/OFF.
Run/stop AC motor drives by RUN/STOP command via control terminals
or keypad. If you still need to run/stop AC motor drives by turning power
ON/OFF, it is recommended to do so only ONCE per hour.
Type of electrical supply system (3WYE) to which the drive shall be
connected.
Use well-insulated motor, suitable for inverter operation.
Note down the rated data and the torque force of the wiring when the
output terminal is below 75 ℃ . This information provides the right wiring
method to wire terminals (It corresponds to the terminals of the motor
wire and non-motor wire).
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Chapter 5 Main Circuit TerminalsCT2000 Series