52
YASKAWA
TOEPC7106170YB YASKAWA AC Drive GA500 Installation & Primary Operation
10
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, measure 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. 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. Set the MFDI parameters before you close control
circuit switches. Incorrect Run/Stop circuit sequence settings can cause serious injury or death from
moving equipment.
WARNING
Sudden Movement Hazard. Correctly wire the start/stop and safety circuits before
you energize the drive. If you momentarily close a digital input terminal, it can start a drive that is
programmed for 3-Wire control and cause serious injury or death from moving equipment.
WARNING
Sudden Movement Hazard. When you use a 3-Wire sequence, set A1-03 = 3330
[Initialize Parameters = 3-Wire Initialization] and make sure that b1-17 = 0 [Run Command at Power Up =
Disregard Existing RUN Command] (default). If you do not correctly set the drive parameters for 3-Wire
operation before you energize the drive, the motor can suddenly rotate when you energize the drive.
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.
NOTICE
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 31,000 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. Failure to obey can cause incorrect control
circuit operation.
