vi
(4) Operation precautions
- When the
Auto restart function is selected the drive will restart
after a fault has occurred.
- The Stop
key on the keypad is always active regardless of drive control (start/stop) me
thods set in
param
e
ters DRV-03 and DRV-91.
- If Restart a
fter Fault Reset (AFN-21) is set to “yes”, and a fault reset is made w
ith the run command and/or
reference signal present, a sudden start will occur. Verify
correct setting of this parameter an
d check that
the run command and/or re
ference signal is turned off in advance of
resetting any faults.
- Do not m
odify the driv
e.
- Depending
on the motor specifications and user ETH overload settings, the motor may not be
protected by
electronic therm
al function of drive.
- The operation of t
he drive is intended to be controlled by either keypad command or control input sign
als.
Do not use a
magnetic contactor or any other device that routinely disconnects the drive and reconnects the
drive to the input supply power for the purpose of starting and stopping the mo
tor.
- A noise filter
may be installed to reduce the effect of electromagnetic interference. Consult factory
for
m
ore
information.
- In cases wit
h
input voltage unbalances, install an AC input reactor.
- Power Fact
or capacitors and generators may become overheated and damaged due to harm
onics created by
the drive.
- Use an inverter dut
y rated motor or take measures to suppress the surge voltage at the motor with a dV/d
T
filter or equivalent. A surge voltage attributable to wiring constant is
generated at the mo
tor terminals and
may
deteriorate mtoor insulation.
- The drive c
an be set to operate a motor at high-speeds. Verify the speed capability of motor and ma
chinery
prior to
operating driv
e.
- Holding
torque is not produced when using the DC-Brake function. Install separate equipmen
t when
holdin
g torque
is required.
(5) Fault prevention precautions
- If required,
provide a safety backup such as an emergency mechanical brake to prevent any
hazardous
conditions if t
h
e drive fails during operation.
(6) Maintenance, inspection and parts replacement
- Do not Meggar (hi-pot
or insulation resistance) test the power or control circuits of the dr
ive.
- Refer to Chapter 7 for pe
riodic inspection and parts replacement
details.
(7) General i
n
structions
Many
of the diagrams and drawings in this instruction manual may show the drive covers removed. Prior to
operating the unit, be sure to restore covers and circuit protection according to specifications.
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