Mechanical & Electrical
Installation
2
2.11 Electrical Installation
YASKAWA ELECTRIC SIEP C710617 05F YASKAWA AC Drive GA700 Technical Manual 73
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. Failure to obey will cause death or serious injury.
DANGER! Electrical Shock Hazard. Make sure that all electrical connections are correct and install all drive covers before
energizing the drive. Use terminals for their intended function only. Incorrect wiring or ground connections, and incorrect repair
of protective covers can cause death or serious injury.
WARNING! Electrical Shock Hazard. Correctly ground the drive before turning on the EMC filter switch. Failure to obey can
cause death or serious injury.
WARNING! Electrical Shock Hazard. Use the drive terminals only for their intended function. Refer to the drive Technical
Manual for more information about I/O terminals. Incorrect wiring, incorrect grounding, and unsatisfactory repair of the
protective cover could cause death or serious injury and damage to the drive.
◆ Standard Connection Diagram
Wire the drive as specified by Figure 2.68.
WARNING! Sudden Movement Hazard. Set the MFDI terminal parameters before you close the control circuit wiring. Incorrect
Run/Stop circuit sequence settings can cause death or serious injury from moving equipment.
WARNING! Sudden Movement Hazard. Correctly wire the start/stop and safety circuits before energizing the drive. Momentarily
closing a digital input terminal can start a drive that is programmed for 3-Wire control. Failure to obey can cause death or
serious injury from moving equipment.
WARNING! Sudden Movement Hazard.
When using a 3-Wire sequence:
• Set the drive for 3-Wire sequence.
• Set b1-17 = 0 [Run Command at Power Up = Disregard Existing RUN Command]
• Wire the drive for 3-Wire sequence.
If these three conditions are correct, the motor can rotate in reverse when energizing the drive:
• The drive is wired for 3-Wire sequence.
• The drive is set for a 2-Wire sequence (default).
• b1-17 = 1 [Accept Existing RUN Command]
Failure to obey can cause death or serious injury from moving equipment.
WARNING! Sudden Movement Hazard. Execute the Application Preset function after checking I/O signal and the external
sequence for the drive. Executing the Application Preset function (A1-06 ≠ 0) changes the I/O terminal function for the drive and
may trigger unexpected operation in equipment. Failure to comply may cause death or serious injury.
NOTICE: Fire Hazard. Install sufficient branch circuit short circuit protection as specified by applicable codes and this manual.
The drive is suited for circuits that supply not more than 100,000 RMS symmetrical amperes, 240 Vac maximum (200 V Class),
480 Vac maximum (400 V Class). Failure to obey can cause death or serious injury.
NOTICE: When the input voltage is 440 V or higher or if the wiring distance is longer than 100 m (328 ft.) be sure to use a drive
duty motor or carefully monitor the motor insulation voltage. Failure to obey can cause damage to the motor insulation.
NOTICE: Do not connect the AC control circuit ground to the drive enclosure. Failure to obey can cause incorrect control circuit
operation.
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