Mitsubishi Electric FR-A720-0.4K Instruction Manual page 261

(2) Frequency monitoring reference (Pr. 55)
• Set the frequency to be based when the frequency is selected as the output of the terminal FM and terminal AM.
• Set the inverter output frequency (set frequency) at which the pulse speed of the terminal FM is 1440 pulses/s (50K
pulses/s). The pulse speed and inverter output frequency are proportional to each other. Note that the maximum
pulse train output is 2400 pulses/s (55K pulses/s).
• Set the reference value of the frequency at which the output voltage of the terminal AM is 10VDC.
• The output voltage and frequency are proportional to each other. (The maximum output voltage is 10VDC.)
2400
(55K)
1440
(50K)
1Hz 60Hz
(initial value)
Setting range of Pr. 55
(3) Current monitoring reference (Pr. 56)
• Set the current at which the pulse speed of the terminal FM is 1440 pulses/s (50K pulses/s).
• The pulse speed and current value are proportional to each other. (The maximum pulse train output is 2400 pulses/s
(55K pulses/s). )
• Set the reference value of the current at which the output voltage of the terminal AM is 10VDC.
• The output voltage and current value are proportional to each other. (The maximum output voltage is 10VDC.)
2400
(55K)
1440
(50K)
Rated current
(initial value)
Setting range of Pr. 56
(4) Reference of torque monitor (Pr. 866)
• Set the torque at which the pulse speed of the terminal FM is 1440 pulses/s (50k pulses/s).
• Pulse speed and torque monitor value are proportional. (The maximum pulse train output is 2400 pulses/s (55k
pulses/s).
• Set the torque reference value at which the output voltage of the terminal AM is 10VDC.
• Output voltage and torque monitor value are proportional. (The maximum output voltage is 10VDC.)
2400
(55k)
1440
(50k)
(Pulse/s)
(initial value)
Setting range of Pr. 866
(5) Terminal AM response adjustment (Pr. 867)
• Using Pr. 867, the output voltage response of the terminal AM can be adjusted within the range 0 to 5s.
• Increasing the setting stabilizes the terminal AM output more but reduces the response level. (Setting "0" sets the
response level to 4ms)
Output frequency 400Hz
500A
400%
150%
Monitor display and monitor output signal
10VDC
1Hz 60Hz
(initial value)
Setting range of Pr. 55
10VDC
Rated current
(initial value)
Setting range of Pr. 56
10VDC
150%
(initial value)
Setting range of Pr. 866
400Hz
500A
4
400%
251