4-4
H Control Characteristics
Control method Sine-wave PWM method (automatic torque boost)
Frequency control range 0.5 to 400 Hz (standard model: 1.5 to 400 Hz)
Frequency accuracy
(temperature fluctuation)
Digital command:
±0.01% (–10°C to 50°C)
Analog command:
±1% (25 ±10°C)
Frequency setting
resolution
Digital command:
0.1 Hz (less than 100 Hz), 1 Hz (100 Hz or more)
Analog command:
0.06 Hz (60 Hz)
Frequency output resolution 0.1 Hz (operation resolution)
Overload resistance 1 minute or less when 150% of rated output current is received
Frequency setting signal 0 to 10 VDC (20 kΩ) or 4 to 20 mA (250 Ω)
Note This setting can be switched using the internal DIP switch.
Acceleration/Deceleration
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
H 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 (400-VAC class: 820 V)
Voltage drop protection
3G3EV-A2j: Stops the system when voltage drops below approximately
200 VDC
3G3EV-ABj: Stops the system when voltage drops below approximately
160 VDC
3G3EV-A4j: Stops the system when voltage drops below approximately
400 VDC
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
Specifications Chapter 4
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