Mitsubishi FR-A800

Torque control under Real sensorless vector control and vector control
PARAMETERS
217
5
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 page
219.)
Torque command via CC-Link communication or PROFIBUS-DR
communication (Pr.804="3, 5, or 6")
• Torque command values can be set via CC-Link communication (FR-A8NC / PLC function), the CC-Link IE Field
communication option (FR-A8NCE), or the PROFIBUS-DR communication option (FR-A8NP).
• If the CC-Link communication is used with Pr.804="3 or 5", Pr.807 Speed limit selection is invalid and Pr.808 Forward
rotation speed limit/speed limit and Pr.809 Reverse rotation speed limit/reverse-side speed limit are valid. (When
Pr.544 CC-Link extended setting="0, 1, 12, 100, or 112")
• For the CC-Link communication, Pr.807 is valid when the extended cyclic setting of CC-Link communication is quadruple or
octuple. For the FR-A8NCE, Pr.807 is always valid.
 Can also be set from operation panel or parameter unit.
 Setting range if set by operation panel or parameter unit is "673 to 1327 (-327% to 327%)"; setting increment is 1%.
NOTE
• For the details of FR-A8NC, FR-A8NCE, FR-A8NP setting, refer to the Instruction Manual for the respective communication
options.
• For the details of the setting using the PLC function, refer to the PLC Function Programming Manual.
Pr.804
setting
Torque command input
Setting range
Setting
increments
FR-A8NC
PLC function
FR-A8NCE FR-A8NP
1
Torque command by
Pr.805, Pr.806

Same operation as the
setting value "3"
Torque command by
Pr.805, Pr.806

600 to 1400 (-400% to
400%)
1%
3
Torque command by Pr.805, Pr.806

Torque command by
remote register (RWw1
or RWwC)
Torque command by
remote register (RWw2
or RWw3)
Torque command by the
buffer memory of
PROFIBUS-DP (REF1
to 7)
5
Torque command by Pr.805, Pr.806

-32768 to 32767
(complement of 2)
(-327.68% to 327.67%)

0.01%
Torque command by
remote register (RWw1
or RWwC)
Torque command by
remote register (RWw2
or RWw3)
Torque command by the
buffer memory of
PROFIBUS-DP (REF1
to 7)
6
Torque command by
Pr.805, Pr.806

Same operation as
setting value "5"
Torque command by
Pr.805, Pr.806

Torque command value
400%
600%
1000% 1400%
-400%
Pr.805, Pr.806
settings
Torque command value
=Pr.805(or Pr.806)-1000%