YASKAWA A1000 Series Quick Start Manual page 16

i.2 General Safety
• when the power supply is above 600 kVA.
• when the drive is running from a power supply system with thyristor converters.
Note: A DC link choke is built in to drive models 2A0110 to 2A0415, 4A0058 to 4A1200, and 5A0041 to 5A0242.
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 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.
Options
⊖ , ⊕ 1, ⊕ 2, and ⊕ 3 terminals are used to connect optional drive-specific compatible devices only. Connecting non-
NOTICE: The B1, B2,
Yaskawa-approved devices to these terminals may damage the drive.
Repetitive Starting/Stopping
Laundry machines, punching presses, and other applications with frequent starts and stops often approach 150% of their rated
output current values. Heat stress generated from repetitive high current will shorten the life span of the IGBTs.
Yaskawa recommends lowering the carrier frequency, particularly when audible noise is not a concern. It is beneficial to
reduce the load, increase the acceleration and deceleration times, or switch to a larger drive to help keep peak current levels
under 150%. Be sure to check the peak current levels when starting and stopping repeatedly during the initial test run, and
make adjustments accordingly.
n Installation
Enclosure Panels
Keep the drive in a clean environment by installing the drive in an enclosure panel or selecting an installation area free of
airborne dust, lint, and oil mist. 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.
Yaskawa offers protective designs for drives that must be used in areas subjected to oil mist and excessive vibration. Contact
Yaskawa or a Yaskawa representative for details.
Installation Direction
NOTICE: Install the drive upright as specified in the manual. Refer to the Mechanical Installation section for more information on installation.
Failure to comply may damage the drive due to improper cooling.
n Settings
Motor Code
When using OLV/PM, set the proper motor code to parameter E5-01 before performing a trial run.
16
4000
Power supply harmonics
reactor required
Power Supply
Capacity (kVA)
600
0
Figure i.1 Installing a Reactor
YASKAWA ELECTRIC TOEP C710616 41G YASKAWA AC Drive - A1000 Quick Start Guide
Reactor
unnecessary
60 400
Drive Capacity (kVA)