Chapter 2 WiringDD Series

2-2 Main Circuit Terminal

Main Circuit Terminal

L1

L1

U/T1

Motor

 

L2

L2

V/T2

IM/PM

 

E

W/T3

 

 

 

 

E

 

Wire Gauge

Torque

 

Wire Type

14-12 AWG.

5.2kgf-cm (4.5in-lbf)

Stranded copper only75

(2.075-3.332mm2)

Terminal Symbol

L1, L2

U/T1, V/T2, W/T3

E

Explanation of Terminal Functions AC line input terminals

AC drive output terminals for connecting 3-phase induction motor Earth connection, please comply with local regulations.

Mains power terminals

;Power can be connected to either L1 or L2.

;Please make sure to fasten the screw of the main circuit terminals to prevent sparks which is made by the loose screws due to vibration

;Please use voltage and current within the regulation shown in Appendix A.

;For the AC motor drive built-in with a general type of GFCI (Ground Fault Circuit Interrupter), it is suggested to select a current sensor with sensitivity of 200mA, and not less than 0.1-second detection time to avoid nuisance tripping. When selecting a GFCI that is specially designed for an AC motor drive, please select tje current sensor with sensitivity of 30mA or above.

;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. You should use control circuit terminal OD, CD or the OD on the keypad (or CD) and STOP key to control running or stopping of the motor drive. If you still need to run/stop AC drives by turning power ON/OFF, it is recommended to do so only ONCE per hour.

Output terminals for main circuit

;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

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3Com VFD-D D manual Main Circuit Terminal

VFD-D D specifications

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