u
Settings
n
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.
n
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.
n
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.
n
Acceleration/Deceleration Times
Acceleration and deceleration times are affected by how much torque the motor generates,
the load torque, and the inertia moment ((GD
2
)/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.
u
General Handling
NOTICE: 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 control wiring and other connections before
applying line power. Make sure there are no short circuits on the control terminals (+V, AC, etc.), as this could
damage the drive.
n
Selecting a Molded Case Circuit Breaker (MCCB) or Ground Fault
Circuit Interrupter (GFCI)
Yaskawa recommends installing a GFCI on the line power supply to protect drive wiring and
prevent damage in the event of component failure. An MCCB may also be used if permitted
by the power system.
The GFCI should be designed for use with an AC drive (i.e., protected against harmonics)
MCCB selection depends on the power factor for the drive, determined by the power supply
voltage, output frequency, and load.
Refer to the Peripheral Devices & Options chapter of the Technical Manual for more
information on breaker installation. Note that a larger capacity breaker is needed when using
a fully electromagnetic MCCB, as operation characteristics vary with harmonic current.
i.3 Application Precautions
20
YASKAWA ELECTRIC TOEP C710606 47A YASKAWA AC Drive – V1000 Quick Start Guide
