Omron SYSDRIVE 3G3MX-A2002, Руководство пользователя

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4-12
4-2 Function Mode
4
Func
tions
* To switch to the 2nd control, allocate 08 (SET) to the multi-function input and then turn it on.
„
Control Method (V/f Characteristics)
Constant Torque Characteristics (VC)
• Output voltage is proportional to output frequency.
While proportional from 0 Hz to base frequency, the output voltage is constant from base to
maximum frequencies regardless of the frequency.
Special Reduced Torque Characteristics (Special VP)
• Suitable for a fan or pump that requires torque in a low speed range. These have VC
characteristics only for low deceleration in reduced torque characteristics.
Period a: Provides constant torque characteristics (VC) within a range from 0 Hz to 10% of the base
frequency.
(Example) If the base frequency is 60 Hz, the Inverter provides constant torque
characteristics within a range from 0 to 6 Hz.
Period b: Provides reduced torque characteristics within a range from 10% to 100% of the base
frequency.
The Inverter outputs voltage based on a curve of the 1.7th power of the frequency.
Period c: Provides constant voltage within a range from the base frequency to the maximum
frequency.
A044 V/f characteristics selection
00: Constant torque characteristics
(VC)
01: Special reduced torque
characteristics (Special VP)
02: Intelligent sensorless vector control
(iSLV)
00

A244
* 2nd V/f characteristics
selection
A045 Output voltage gain
20. to 100. 100. %
A245 *2nd output voltage gain
Related functions
A046, A246, A047, A247, A082,
H003, H203, H004, H204
Parameter No. Function name Data Default setting Unit
0
Output voltage
(100%)
Base frequency
(A003/A203)
Output frequency (Hz)
Max. frequency
(A004/A204)
0
Output voltage
(100%)
Base frequency
(A003/A203)
Output frequency (Hz)
Max. frequency
(A004/A204)
VC
VP (1.7th
power of VP)
10% of base
frequency
a b c