Electrical Installation; Standard Connection Diagram - YASKAWA CR700 Technical Manual

2.11

Electrical Installation

DANGER! Electrical Shock Hazard. Do not examine, connect, or disconnect wiring on an energized drive. Before servicing,
disconnect all power to the equipment and wait for the time specified on the warning label at a minimum. The internal capacitor
stays charged after the drive is de-energized. The charge indicator LED extinguishes when the DC bus voltage decreases
below 50 Vdc. When all indicators are OFF, remove the covers before measuring for dangerous voltages to make sure that the
drive is safe. If you do work on the drive when it is energized, it will cause serious injury or death from electrical shock.
WARNING! Electrical Shock Hazard. De-energize the drive and wait 5 minutes minimum until the Charge LED turns off.
Remove the front cover and terminal cover to do work on wiring, circuit boards, and other parts. Use terminals for their correct
function only. Incorrect wiring, incorrect ground connections, and incorrect repair of protective covers can cause death or
serious injury.
WARNING! Electrical Shock Hazard. Correctly ground the drive before you turn on the EMC filter switch. If you touch electrical
equipment that is not grounded, it can cause serious injury or death.
WARNING! Electrical Shock Hazard. Use the terminals for the drive only for their intended purpose. Refer to the technical
manual for more information about the I/O terminals. Wiring and grounding incorrectly or modifying the cover may damage the
equipment or cause injury.

Standard Connection Diagram

◆
Wire the drive as specified by
WARNING! Sudden Movement Hazard. Check the I/O signals and the external sequences for the drive before you set the
Application Preset function. When you set the Application Preset function (A1-06 ≠ 0), it changes the I/O terminal functions for
the drive and it can cause equipment to operate unusually. This can cause serious injury or death.
WARNING! Fire Hazard. Install sufficient branch circuit short circuit protection as specified by applicable codes and this
manual. The drive is suitable for circuits that supply not more than 100,000 RMS symmetrical amperes, 240 Vac maximum (200
V Class), 480 Vac maximum (400 V Class). Incorrect branch circuit short circuit protection can cause serious injury or death.
NOTICE: When the input voltage is 440 V or higher or the wiring distance is longer than 100 m (328 ft), make sure that the
motor insulation voltage is sufficient or use an inverter-duty motor or vector-duty motor with reinforced insulation. Motor winding
and insulation failure can occur.
Note:
Do not connect the AC control circuit ground to the drive enclosure. Incorrect ground wiring can cause the control circuit to operate
incorrectly.
YASKAWA SIEPC71061723A YASKAWA AC Drive CR700 Technical Manual
Figure 2.71.

2.11 Electrical Installation

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