Yaskawa AC Drive Z1000 Bypass Technical Manual - Manual (Page 18)

NOTICE
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.
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.
Do not use screws of different sizes in SW1 and SW2.
Failure to comply may cause overheating and electrical damage.
u General Application Precautions
n Selection
Installing a Reactor
Use an AC reactor in the following situations:
• to suppress harmonic current.
• when the drive is running from a power supply system with thyristor converters.
Drive Capacity
For specialized motors, 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 [total motor
rated current × 1.1].
Starting Torque
The startup and acceleration characteristics of the motor are restricted to the drive overload current rating.
The overload rating for the drive determines the starting and accelerating characteristics of the motor. Expect lower torque
than when running from line power. To achieve a higher starting torque, use a larger drive or a drive and motor with larger
capacity.
Emergency Stop
During a drive fault condition, the output shuts off but the motor does not stop immediately. A mechanical brake may be
required when it is necessary to stop the motor faster than the ability of the Fast Stop function of the drive.
n Installation
Enclosure Panels
Keep the drive in a clean environment. Be sure to leave the required space between drives to provide for cooling, and take
proper measures so the ambient temperature remains within allowable limits and keep flammable materials away from the
drive.
Installation Direction
NOTICE: Install the drive upright as specified in the manual. Refer to Mechanical Installation on page 40 for more information on
installation. Failure to comply may damage the drive due to improper cooling.
n Settings
Upper Limits
NOTICE: The drive is capable of running the motor up to 240 Hz. Be sure to set the upper limit for the frequency of the drive to prevent the
possible danger of accidentally operating equipment at higher than rated speed. The default setting for the maximum output frequency is
60 Hz.
i.2 General Safety
18 YASKAWA ELECTRIC SIEP YAIZ1B 01D YASKAWA AC Drive – Z1000 Bypass Technical Manual