YASKAWA A1000 Series Quick Start Manual page 10

i Preface & General Safety
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.
Install adequate branch circuit short circuit protection per applicable codes.
Failure to comply could result in damage to the drive.
The drive is suitable for circuits capable of delivering not more than 100,000 RMS symmetrical Amperes, 240 Vac
maximum (200 V Class) and 480 Vac maximum (400 V Class).
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.
Application Notes
■
Selection
Installing a Reactor
An AC or DC reactor 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.
Note: A DC reactor is built in to the drive models 2A0110 to 2A0415 and 4A0058 to 4A0675.
Figure 1
Drive Capacity
For specialized motors, make sure that the motor rated current is less than 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 1.1 times of
the total motor rated current.
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 get more starting torque, use a larger drive or increase both the motor and
drive capacity.
Emergency Stop
When the drive faults out, the output is shut off. This, however, does not stop the motor immediately. Some type of
mechanical brake may be needed if it is necessary to halt the motor faster than the Fast Stop function is able to.
Options
The B1, B2, +1, +2, and +3 terminals are used to connect optional devices. Connect only A1000-compatible devices.
10
NOTICE
4000
Power supply harmonics
reactor required
Power Supply
Capacity (kVA)
600
0
Figure 1 Installing a Reactor
YASKAWA ELECTRIC TOEP C710616 21C YASKAWA AC Drive - A1000 Quick Start Guide
Reactor
unnecessary
60 400
Drive Capacity (kVA)