
Torque control under Real sensorless vector control and vector control
191
5
Torque command by analog input (terminal 1) (Pr.804="0 (initial value)")
• Torque commands are given using voltage (current) input to the terminal 1.
• Set
Pr.868 Terminal 1 function assignment
="3, 4" to use the terminal 1 for torque command inputs.
• Torque commands given using analog inputs can be calibrated
by calibration parameters Pr.919 and Pr.920
(Refer to
.)
Torque command by parameter (Pr.804="1")
• Torque command values can be set by setting
Pr.805 Torque command value (RAM)
and
Pr.806 Torque command
value (RAM, EEPROM)
.
• 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.
• 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.
NOTE
• 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
Torque command
150%
-100%
(-10V)
0
100%
(+10V)
-150%
Terminal 1
analog input
Torque command value
400%
600%
1000%
1400%
-400%
Pr.805, Pr.806
settings
Torque command value
=
Pr.805(or Pr.806)
-1000%
Содержание 800 Series
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