Control Characteristics
Control method
Sine-wave PWM method (automatic torque boost)
Frequency control
range
1.5 to 400 Hz
Frequency accuracy
(temperature
fluctuation)
0.01% (--10°Cto50°C)
Frequency setting
resolution
0.1 Hz (less than 100 Hz), 1 Hz (100 Hz or more)
Frequency output
resolution
0.1 Hz (operation resolution)
Overload resistance
1 minute or less when 150% of rated output current is received
Acceleration/Decelerati
on time
0.0 to 999 seconds (acceleration and deceleration times are
set separately)
Braking torque
(continuous
regenerative braking)
Approximately 20%
Note
125% to 220% when braking resistor is externally
installed.
Voltage/Frequency
characteristics
Simple V/f pattern setting
Protection Functions
Motor protection
Electronic thermal protection
Instantaneous
overcurrent protection
When 250% of the rated output amperage is exceeded
Overload protection
When 150% of the rated output amperage is exceeded for one
minute
Overvoltage protection
Stops the system when DC voltage of the main circuit exceeds
approximately 410 V
Voltage drop protection
3G3EV-A2
R: Stops the system when voltage drops
below approximately 200 V
3G3EV-AB
R: Stops the system when voltage drops
below approximately 160 V
Protection from
instantaneous power
interruption
Stops the system when a power interruption lasts for 15 ms or
more.
Operation can be continued by setting constant No. 36 as
follows:
•Operation is continued if a power interruption only lasts for
approximately 0.5 second or less.
•Operation is continued unconditionally.
Radiation fin overheat
protection
Detects a fin temperature of 110 10°C
Ground protection
Overcurrent level protection
Chapter 6
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