Yaskawa Compact Vector AC DRIVE V1000

Description

Yaskawa Compact Vector AC DRIVE V1000

Application Precautions:-

♦Selecting a Reactor-

An AC reactor or DC link choke can be used for the following:

• to suppress harmonic current.

• to smooth peak current that results from capacitor switching.

• when the power supply is above 600 kVA.

• when the drive is running from a power supply system with thyristor converters.

♦ Drive Capacity-

Make sure that the motor rated current is less than the rated nameplate output current of the drive. When running more than one motor in parallel from a single drive,

the drive rated current should 1.1 times larger than the total motor rated current for all connected motors or nuisance drive faults may occur.

♦ Starting Torque

The overload rating of the drive determines the starting and accelerating characteristics of the motor. Expect lower running torque than when running the motor from

line power. To get more starting torque, use a larger drive or increase both the motor and drive capacity.

♦ Emergency/Fast Stop

During a drive fault condition, a protective circuit is activated and drive output is shut off. The motor may coast to a stop or attempt to decelerate depending on parameter settings. If the emergency/fast stop cannot stop the load as fast as desired, a customer-supplied mechanical brake may be required. Test emergency stop circuitry before putting drive into operation.

♦ Options-

The B1, B2, +1, +2, and +3 terminals are used to connect optional power devices. Connect only devices compatible with the drive.

♦ Repetitive Starting/Stopping-

Applications with frequent starts and stops often exceed 150% of their rated current values. Heat stress generated from repetitive high current can shorten the life span of the IGBTs. The expected lifetime for the IGBTs is about 8 million start and stop cycles with a 4 kHz carrier frequency and a 150% peak current. Yaskawa recommends lowering the carrier frequency, particularly when audible noise is not a concern. The user can also choose to reduce the load, increase the acceleration and deceleration times, or switch to a larger drive. This will 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.

Yaskawa Compact Vector AC DRIVE V1000

Settings:-

♦ Motor Code

If using OLV/PM designed for permanent magnet motors (A1-02 = 5), make sure that the proper motor code is set in parameter E5-01 before performing a trial run.

♦ Upper Limits

The drive is capable of running the motor up to 400 Hz. Due to the danger of accidentally operating the motor at high speed, be sure to set the upper frequency limit. The default setting for the maximum output frequency is 60 Hz.

♦ DC Injection Braking

Motor overheat can result if there is too much current used during DC Injection Braking, or if the DC Injection Braking time is too long.

♦ Acceleration/Deceleration Times

Acceleration and deceleration times are affected by how much torque the motor generates, the load torque, and the inertia moment ((GD2)/4). 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 operating. For faster acceleration and deceleration, install a braking option or increase the capacity of the drive.

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