YASKAWA T1000V Technical Manual page 16

i.2 General Safety
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, and +2 terminals are used to connect optional devices. Connect only T1000V-compatible devices.
Installation
■
Enclosure Panels
Keep the drive in a clean environment by either selecting an area free of airborne dust, lint, and oil mist, or install the
drive in an enclosure panel. Be sure to leave the required space between drives to provide for cooling, and that proper
measures are taken so that the ambient temperature remains within allowable limits. Keep flammable materials away
from the drive. If the drive must be used in an area where it is subjected to oil mist and excessive vibration, protective
designs are available. Contact Yaskawa or your Yaskawa agent for details.
Installation Direction
The drive should be installed upright as specified in the manual. For more information on installation,
Mechanical Installation on page
■ Settings
Motor Code
If using OLV/PM designed for permanent magnet motors, make sure that the proper motor code has been set to
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 of operating at high speed, be
sure to set the upper limit for the frequency. The default setting for the maximum output frequency is 50 Hz.
DC Injection Braking
Motor overheat can result if there is too much current used during DC Injection Braking, or if the time for DC Injection
Braking 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 ((GD )/4). Set a longer accel/decel time when Stall Prevention is enabled. The accel/decel times are lengthened
2
for as long as the Stall Prevention function is operating. For faster acceleration and deceleration, install one of the
braking options available or increase the capacity of the drive.
General Handling
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Wiring Check
Never connect the power supply lines to output terminals U/T1, V/T2, or W/T3. Doing so will destroy the drive. Be sure
to perform a final check of all sequence wiring and other connections before turning the power on. Make sure there are
no short circuits on the control terminals (+V, AC, etc.), as this could damage the drive.
Selecting a Circuit Breaker or Leakage Circuit Breaker
Yaskawa recommends installing a GFCI (Ground Fault Circuit Interrupter) to the power supply side. An MCCB (Molded
Case Circuit Breaker) can also be used if permitted by the power system.
The GFCI should be designed for use with an AC drive (e.g. Type B according to IEC 60755). MCCB selection depends
on the power factor for the drive, determined by the power supply voltage, output frequency, and load.
Installing a Molded Case Circuit Breaker (MCCB) and Equipment for Residual Current Monitoring/Detection
(RCM/RCD) on page 300. Note that a larger capacity is needed when using a fully electromagnetic MCCB, as operation
characteristics vary with harmonic current.
16
33.
YASKAWA ELECTRIC SIEP C710606 44B YASKAWA AC Drive T1000V Technical Manual
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Refer to