Hitachi SJ Series, User Manual

Page: 602 / 786

18-9
Chapter 18
Tips/FAQ/Troubleshooting
E006 Braking resistor
overload error
When the use rate of inverter’s braking resistor
operation circuit (BRD) exceeds the use rate set
beforehand in [bA-60], the inverter turns OFF its
output.
Error occurred
during repetitive
operations.
• Reduction of repetition cycle of operation may improve the situation.
Adjustment of deceleration time in [FA-12] and re-examination of
choice of resistor may also improve the situation.
• Repetition cycle of
operation is high.
Error occurred
during operation.
• The resistor may not be able to fully consume the power because
the regenerative power returned from the motor is high. Load
condition or choice of resistor must be re-examined.
• Continuous regenerative
operation
• Capacity of braking
resistor is small.
• Rotated by external
force.
• The resistor may not be able to fully consume the power because
the fan is rotated by a strong wind, or because the regenerative
power returned from the motor increases when loads are lowered
by a crane or the like. Load condition or choice of resistor must be
re-examined.
E006
Occurrence

Estimated cause(s)

Exemplar measures to be taken
Error occurred
during
deceleration.
• Insufficient deceleration
time
• Load inertia is large.
• Capacity of braking
resistor is small.
• Setting longer deceleration time in [FA-12] may improve the
situation that the motor is rapidly decelerated. If deceleration time
cannot be shortened, choice of resistor must be re-examined.