Application Notes - YASKAWA U1000 Series Technical Manual

i.2 General Safety
Observe proper electrostatic discharge procedures (ESD) when handling the drive and circuit boards.
Failure to comply may result in ESD damage to the drive circuitry.
Do not perform a withstand voltage test on any part of the drive.
Failure to comply could result in damage to the sensitive devices within the drive.
Do not operate damaged equipment.
Failure to comply could result in further damage to the equipment.
Do not connect or operate any equipment with visible damage or missing parts.
If a fuse is blown or equipment for residual current monitoring/detection (RCM/RCD) is tripped, check the
wiring and the selection of the peripheral devices.
Contact your supplier if the cause cannot be identified after checking the above.
Do not restart the drive or immediately operate the peripheral devices if a fuse is blown or equipment for
residual current monitoring/detection (RCM/RCD) is tripped.
Check the wiring and the selection of peripheral devices to identify the cause.
Contact your supplier before restarting the drive or the peripheral devices if the cause cannot be identified.
Install adequate branch circuit short circuit protection per applicable codes.
Failure to comply could result in damage to the drive.
The drive is suitable for circuits capable of delivering not more than 100,000 RMS symmetrical Amperes, 240 Vac
maximum (200 V Class), 480 Vac maximum (400 V Class: CIMR-U4E, CIMR-U4W), and 500 Vac
maximum (400 V Class: CIMR-U4A, CIMR-U4P).
Do not expose the drive to halogen group disinfectants.
Failure to comply may cause damage to the electrical components in the drive.
Do not pack the drive in wooden materials that have been fumigated or sterilized.
Do not sterilize the entire package after the product is packed.
 Application Notes
Selection

Drive Rated Output Current
Make sure that the motor rated current is less than the rated output current for the drive.
When running more than one motor in parallel from a single drive, the capacity of the drive should be larger than [motor
rated current  1.1]. Run only one motor from each drive when using vector control. It is not possible to run more than
one motor from one drive with vector control.
When 2 Seconds is Required for Momentary Power Loss Ride-Thru Time
Use the units listed below when continuing drive operation after the power is restored even after a momentary loss of
power of 2 seconds occurs:
• 200 V class Momentary Power Loss Ride-Thru unit: Model No. P0010
• 400 V class Momentary Power Loss Ride-Thru unit: Model No. P0020
Drive Start-Up Time
The drive requires 1.5 seconds to prepare for operation after the power is turned on. Be mindful of this delay when using
an external reference input.
Note: 1.5 seconds is the required time when no optional devices are used with the drive. When using an optional communication
device, the time required for the drive to be ready for operation will vary in accordance with the start up time of the
communication card.
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NOTICE
YASKAWA ELECTRIC SIEP C710636 03A YASKAWA U1000 Technical Manual