61
OCS LEVEL (Parameter P63)
The OCS level (overcurrent stall prevention operation level) and current clamp function level
can be set with a percent (%) to the inverter's rated current.
Data setting range (%)
1 to 200 (can be set in 1 units)
Note 1)
The OCS level and current clamp levels are the same.
Note 2)
This setting is not related to the electronic thermal relay level and overload
detection level.
CARRIER FREQUENCY (Parameter P64)
This carrier frequency can be changed to "reduce motor noise" and to "avoid mechanical
resonance". The carrier frequency is set to 1.6kHz before shipment from the factory.
Data setting range (kHz)
0.8 • 1.1 • 1.6 • 2.5 • 5.0 • 7.5 • 10.0
(Seven types of settings are possible.)
Note 1)
This setting can be changed during operation, but changes in the following [Low
frequency group] and [High frequency group] can be made only when operation
is stopped.
[Low frequency group] : 0.8 to 1.6 (kHz)
[High frequency group] : 2.5 to 10.0 (kHz)
Note 2)
When the data value is set to "10.0", the rated output current for only the 3.7kW
capacitor inverter must be reduced. Refer to the precautions on page 83, and
use correctly.
Note 3)
When the carrier frequency is set to 7.5kHz or 10.0kHz, the carrier frequency will
change according to the output frequency.
·
When set to 7.5kHz, the carrier frequency will be output at 5.0kHz between the
output frequency 0.5 to 7Hz.
·
When set to 10.0kHz, the carrier frequency will be output at 5.0kHz between
the output frequency 0.5 to 7Hz, and will be output at 7.5kHz between the
output frequency 7 to 17Hz.
