Mitsubishi Electric FR-A800, Instruction Manual

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Parameters Torque control under Real sensorless vector control and vector control
FR-A800 5 - 133
Torque command by analog input (terminal 1) (Pr. 804 = "0 (initial value)")
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Torque commands are given using voltage (current) input to the terminal 1.
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Set Pr. 868 "Terminal 1 function assignment" = "3, 4" to use the terminal 1 for torque command
inputs.
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Torque commands given using analog inputs can be calibrated by calibration parameters C16
(Pr. 919) to C19 (Pr. 920) (Refer to page 5-409.)
Torque command by parameter (Pr. 804 = "1")
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Torque command values can be set by setting Pr. 805 "Torque command value (RAM)" and Pr. 806
"Torque command value (RAM, EEPROM)".
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For Pr. 805 or Pr. 806, regard 1000% as 0%, and set torque command by offset from 1000%.
The following diagram shows relation between the Pr. 805 or Pr. 806 setting and the actual torque
command value.
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To change torque command value frequently, write in Pr. 805. If values are written in Pr. 806
frequently, EEPROM life is shortened.
●
When FR-A8NCE (CC-Link IE Field communication option) is mounted, torque command from
FR-A8NCE is enabled.
Fig. 5-45:
Torque command by terminal 1
I001524E
I001525E
Fig. 5-46: Torque command using parameters
NOTES When the torque command is set by Pr. 805 (RAM), powering OFF the inverter will erase the
changed parameter value. Therefore, the parameter set value will be the one saved by Pr. 806
(EEPROM) when the power is turned back on.
If providing torque command by parameter setting, set the speed limit value properly to prevent
overspeeding. (Refer to page 5-136.)
Terminal 1
analog
input 100 %
(+10 V) –100 %
(–10 V)
150 %
–150 %
Torque command
Pr. 805, Pr. 806 settings
400 %
–400 %
Torque command value
1000 % 1400 %
Torque command value =
Pr. 805 (or Pr. 806) – 1000 %
600 %