Failure Indication And Details - Omron SYSDRIVE 3G3IV Installation Instructions Manual

4-2

Failure Indication and Details

Caution Never replace the DC bus fuse without first checking the output transistors.
Failure Indication and Details
Indication Failure indication items
Low voltage (PUV)
"#
Low voltage (CUV)
"$
Low voltage (MC-ANS fault) Main circuit magnetic contactor
"%
Overcurrent
&
Overvoltage
&"
Fuse blown

Radiation fin overheated
&
Overload
&#
Overload
&$
Overtorque
&%
Regenerative transistor

failure
Braking resistor unit

overheated
External terminal 3 failure
%
External terminal 5 failure
)
External terminal 6 failure
*
External terminal 7 failure
(
External terminal 8 failure
+
Control circuit failure
'$
NV-RAM (S-RAM) failure
'%
NV-RAM
',
(BCC, Access Code)
A/D convertor failure in
')
CPU
Optional connection failure
'*
As the table below shows, the failures that the SYSDRIVE 3G3IV detects are
classified into troubles and alarms. If a problem occurs, the fault contact is
output and the unit coasts to a stop. When an alarm is issued, the digital op-
erator indicates the alarm for warning.
Description
Two seconds are counted after the
detection of low voltage.
Control circuit becomes low
voltage during operation.
does not operate correctly.
Inv. output current > 120% of
transistor rated current
Detection level:
Approx: 400V for 200V class
Approx: 800V for 400V class
Reset level: 385V
---
Fin temperature 90°C (194°F)
Protect the motor.
Protect the inverter.
For inv. output current >
overtorque detection level and
coasting stop selection at
overtorque detection
---
---
Stop mode selection possible
Inverter failure
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Section 4-2
Corrective action
Check the wiring of line units (at
power supply side). y )
Correct the power supply voltage. Correct the po er s ppl oltage
Check the motor winding
resistance and increase the accel
time.
Increase the decel time and/or
add a braking resistor.
Check short-circuit at load and
ground fault etc.
Check fan or ambient temperature
(less than 45°C, 113°F).
Measure motor temperature-rise
and reduce load, then reset V/f.
Reduce load, and increase the
accel time, then reset V/f.
---
Replace transistor.
Check the state of input terminal
with data .
 '(
Replace inverter if "1" is indicated Replace in erter if "1" is indicated
as the state of open terminal. as the state of o en terminal.
Replace inverter.
Check and secure the optional Ch k d th ti
card connector. card connector.
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