YASKAWA Z1000U Series Quick Start Manual page 8

i.1 Preface
Grounding the Power Supply
Yaskawa recommends using a dedicated ground for the power supply, as the drive is designed to run with a 1:1 ratio relative
to the power supply. Ground other devices as directed in the specifications for those devices. Take particular care when
connecting sensitive electronic devices. Separate ground lines and install a noise filter to prevent problems from noise.
When Using a Generator as a Power Supply
Select the generator capacity approximately twice as large as the drive input power supply capacity. Set the deceleration time
or load so that the regenerative power from the motor will be 10% or less of the generator capacity. For further information,
contact Yaskawa or a Yaskawa representative.
When a Phase Advance Capacitor or Thyristor Controller is Provided for the Power Supply
Do not install a phase advancing capacitor to the drive.
For the phase advance capacitor that has already been installed on the same power supply system as the drive, switch to a
phase-advanced capacitor with a series reactor to prevent oscillation with the drive.
Contact Yaskawa or a Yaskawa representative 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 High Frequency 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.
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 User 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 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.
Settings
Motor Code
When using a permanent magnet motor, set the proper motor code to parameter E5-01 before performing a trial run.
8 YASKAWA ELECTRIC TOEP C710636 11E Z1000U HVAC MATRIX Drive Quick Start Guide