1.1 Features
1-3
Chapter 1 BEFORE USE
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Improved durability in overload operation
Enhancement for extending the current overload durability time of the FRENIC-MEGA longer than that of
the Fuji conventional inverters allows the FRENIC-MEGA to run the motor with shorter
acceleration/deceleration time. This improves the operation efficiency of machinery such as cutting
machines or carrier machines.
Current overload durability: 200% for 3 seconds and 150% for 1 minute. (HD mode)
The standard model is available in the following three drive modes concerning the operation load.
Drive mode
Rated current overload
capability
Major application
HD (High duty) mode: 200% for 3 sec, 150% for 1 min Heavy duty load applications
MD (Medium duty) mode: 150% for 1 min Medium duty load applications
LD (Low duty) mode: 120% for 1 min Low duty load applications
(The MD mode is available only in the 400 V class series of inverters with a capacity of 90 to 400 kW.)
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Quicker response to the run commands
The terminal response to the run commands has had an established reputation.The FRENIC-MEGA has
further shortened this response time, achieving the industry-top response time.
This function is effective in shortening the tact time per cycle and effective for use in the process including
frequent repetitions.
Example:
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