YASKAWA E1000 Technical Manual page 19

Upper Limits
The drive is capable of running the motor up to 200 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 200 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. 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 one of the dynamic braking
options available or increase the capacity of the drive.
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Compliance with Harmonic Suppression Guidelines
E1000 conforms to strict guidelines in Japan covering harmonic suppression for power conversion devices. Defined in
JEM-TR201 and JEM-TR226 and published by the Japan Electrical Manufacturers' Association, these guidelines define
the amount of harmonic current output acceptable for new installation. Instructions on calculation harmonic output are
available at www.e-mechatronics.com.
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General Handling
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 an Earth Leakage Circuit Breaker (ELCB) to the power supply side. The ELCB should
be designed for use with an AC drive (e.g. Type B according to IEC/EN 60755).
Select a MCCB (Molded Case Circuit Breaker) or ELCB with a rated current that is 1.5 to 2 times higher than the rated
current of the drive in order to avoid nuisance trips caused by harmonics in the drive input current. Also refer to
Installing a Molded Case Circuit Breaker (MCCB) and Earth Leakage Circuit Breaker (ELCB) on page
NOTICE: Prevent Equipment Damage. For models CIMR-E4A0930 and 4A1200, make sure to install a fuse and an ELCB. Failure to
comply may result in serious damage to the facilities in case the drive is defected. Refer to
and 4A1200 on page 346
Magnetic Contactor Installation
Use a magnetic contactor (MC) to ensure that power to the drive can be completely shut off when necessary. The MC
should be wired so that it opens when a fault output terminal is triggered.
Avoid switching a magnetic contactor on the power supply side more frequently than once every 30 minutes. Frequent
switching can cause damage to the drive.
Inspection and Maintenance
Capacitors in the drive take time to discharge even after the power has been shut off. After shutting off the power, wait
for at least the amount of time specified on the drive before touching any components.
The heatsink can become quite hot during operation, and proper precautions should be taken to prevent burns. When
replacing the cooling fan, shut off the power and wait at least 15 minutes to be sure that the heatsink has cooled down.
Even when the power has been shut off for a drive running a PM motor, voltage continues to be generated at the motor
terminals while the motor coasts to stop. Take the precautions described below to prevent shock and injury:
• Applications where the machine can still rotate even though the drive has fully stopped should have a load switch
installed to the output side of the drive. Yaskawa recommends manual load switches from the AICUT LB Series by
AICHI Electric Works Co., Ltd.
• Do not allow an external force to rotate the motor beyond the maximum allowable speed, also when the drive has been
shut off.
YASKAWA ELECTRIC SIEP C710616 35D YASKAWA AC Drive E1000 Technical Manual
for details.
i.2 General Safety
Wiring Fuses for the CIMR-E
341.

4A0930
19