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8.1 Er.01: Overcurrent Detection
Detection
The built-in CT detects that a current that is at least 1.5 times larger than the
condition:
unit's rated current flowed continuously for more than a few cycles.
When
The output stops.
detected:
Clearing
Stop the power supply and remove the causes of the detected error.
method:
Potential
• An abnormality may have occurred in a load.
causes:
• Some loads generate overcurrent when the unit starts. When the unit is
operated with phase control, you may be able to improve this problem by
increasing the soft-start time. When the unit is operated with cycle control, check
that the unit's rated current is not exceeded during a single cycle.
8.2 Er.02: Temperature Rise Error
Detection
The cooling fin temperature has risen abnormally. (This condition applies only to
condition:
models with a rated current of 100 A or higher.)
When
The output stops.
detected:
Clearing
Stop the power supply and remove the causes of the detected error.
method:
Potential
• The temperature inside the distribution panel cabinet (ambient temperature)
causes:
may have exceeded the unit's specifications. Use the unit in environments with
temperatures of 50°C or lower.
• The unit's cooling fan may have slowed down or stopped. Check if it is
rotating or covered with dust.
8.3 Er.03: Fuse Blowout
Detection
The fuse has blown out. (This condition applies only to units with a fuse.)
condition:
When
The output stops.
detected:
Clearing
Stop the power supply and remove the causes of the detected error.
method:
Potential
• An abnormality may have occurred in a load.
causes:
• Some loads generate overcurrent when the unit starts. When the unit is
operated with phase control, you may be able to improve this problem by
increasing the soft-start time. When the unit is operated with cycle control, check
that the unit's rated current is not exceeded during a single cycle.
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