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9-2
Common specifications
Item
Specifications
Remarks
Maximum
output fre-
quency
•
50 to 120Hz (in 1Hz steps)
Base
frequency
•
25 to 120Hz (in 1Hz steps)
Starting fre-
quency
•
1 to 6Hz (in 1Hz steps)
Setting
Carrier fre-
quency
•
0.75 to 15kHz
(Vector-distribution PWM control selectable at 7kHz or less)
When operating at a carrie r frequency of 9kHz or above, the frequency
may automatically drop to 8kHz to protect the drive.
Accuracy
•
Analog setting:
±
1.0% of maximum frequency (at 25
±
10°C)
•
Keypad panel setting:
±
0.01% of maximum frequency
(at –10 to +50°C)
Output frequency
Setting reso-
lution
•
Analog setting: 1/256 of Maximum frequency
•
Keypad panel setting: 0.1Hz(99.9Hz or less), 1Hz(100Hz or more)
Voltage/
freq.
Characteristic
•
Output voltage proportional to input voltage. Base frequency
adjustable from 25 to 120Hz.
Torque boost
•
Manual setting by code 0 to 31.
(setting for variable torque load available)
Starting torque
•
150% or more (at 6Hz)
Control method
•
Sinusoidal PWM control
(with simplified current-vibration suppression)
Operation
method
•
Keypad operation: RUN or STOP key :
Input signal: Forward/Reverse/Stop command, Coast-to-stop
command, Trip command (External alarm),
Alarm reset
Frequency set-
ting
(Multistep)
(Linked opera-
tion)
•
Keypad operation: ,Digital setting by
or
key
•
Built-in potentiometer
•
Analog input: 0 to +5Vdc, 0 to +10Vdc, 4 to 20mAdc
•
Up to 4 multistep frequencies can be set in 2-bit external signal by terminal
function selection
•
Setting by RS485 serial communication (Option)
Acceleration/
deceleration
time
•
0.01 to 60.0s
(Independently adjustable acceleration and deceleration)
Frequency
limiter
•
High and low limits can be set for output frequency between 0 to 100% in
Hz
Bias frequency
•
The bias frequency can be set from –100 to +100% in Hz.
Control
Gain (frequency
setting signal)
•
5Vdc or 10Vdc gain can be selected.
