Chapter 5 Main Circuit Terminals CFP2000 5-2 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.
Ensure the insulation of the main circuit wiring in accordance with the relevant safety regulations. Main power terminals Do not connect three-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 recommended 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 200 mA 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. Connect the drive to a three-phase three-wire or three-phase four-wire Wye system to comply with UL standards.
Output terminals for main circuit Use well-insulated motor, suitable for inverter operation. When the AC drive output terminals U/T1, V/T2, and W/T3 are connected to the motor terminals U/T1, V/T2, and W/T3 respectively, the motor will rotate counterclockwise (as viewed on the shaft end of the motor, refer to the pointed direction in the figure below) when a forward operation command is received. To permanently reverse the direction of motor rotation, switch over any of the two motor leads. Figure 5-1