Yaskawa U1000 Industrial MATRIX Drive - Manual (Page 8)

Attach a phase-advance capacitor with a series reactor to prevent oscillation with the drive after installing the phase advance
capacitor on the same power supply system as the drive.
Contact Yaskawa or your Yaskawa agent when a device generating voltage surge or voltage distortion such as DC motor drive
thyristor controller or magnetic agitator is installed on the same power supply system.
Prevention Against EMC or Harmonic Leakage Current
Use units with built-in EMC filters that have the CE marking.
Use a zero-phase reactor as a noise filter when a device that will be affected by noise is near the drive.
Effects of Power Supply Distortion
Distortion of the power supply voltage increases the harmonics contents due to power supply harmonics entering the drive.
Starting Torque
The startup and acceleration characteristics of the motor are restricted to the drive overload current rating (HD: 150% 60 s,
ND: 120% 60 s).
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.
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. The expected
life span of the IGBTs is about 8 million start and stop cycles with a 4 kHz carrier frequency and a 150% peak current.
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.
n Carrier Frequency Derating
Reduce the rated output current of the drive when increasing the carrier frequency above the factory default setting. Refer to
the Technical Manual for details.
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 your Yaskawa agent for details.
Installation Direction
NOTICE: Install the drive upright as specified in the manual. Refer to Mechanical Installation on page 16 for more information on
installation. Failure to comply may damage the drive due to improper cooling.
Settings
Motor Code
When using a permanent magnet motor, set the proper motor code to parameter E5-01 before performing a trial run.
Upper Limits
NOTICE: The drive is capable of running the motor up to 400 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.
DC Injection Braking
NOTICE: Excessive current during DC Injection Braking and excessive duration of DC Injection Braking can cause motor overheat.
Acceleration/Deceleration Times
Acceleration and deceleration times are affected by the amount of torque generated by the motor, the load torque, and the
moment of inertia. Set a longer accel/decel time when Stall Prevention is enabled. The accel/decel times are lengthened for
as long as the Stall Prevention function is in operation. Use a larger drive and motor for faster acceleration and deceleration.
i.1 Preface
8 YASKAWA ELECTRIC TOEP C710636 04C U1000 Industrial MATRIX Drive Quick Start Guide