Справочник Пользователя для Mitsubishi Electronics FR-V540-1.5K to 55K

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The following table indicates the functional combinations of terminals 1, 2 and 3.
Basically, the analog multiple functions are assigned to the terminal 1 alone and only one function may be selected 
for the multi-function analog input.

When the PID control function is selected, the terminal 2 is used for the PID set point. For PID control, refer to 

page 139.

When the torque bias function is selected, the terminal 3 is used for the torque bias input.

Speed 
control

Speed command

No function 
(Pr. 810 = 0, Pr. 840 = 9999)

Speed auxiliary setting
(Reversible operation also possible)

Factory-set status

Magnetic flux command

Torque limit 
(Pr. 810 = 1)

Speed auxiliary setting
(Reversible operation also possible)
Magnetic flux command

Regenerative torque limit

Setting can be made 
when Pr. 810 = 1.

Torque bias
(Pr. 810 = 0, Pr. 840 = 1,2,3)

Speed setting auxiliary
Magnetic flux command

PID 
control 
(Speed
 control)

PID set point

No function 
(Pr. 810 = 0)

PID measured value
PID deviation signal

Torque limit 
(Pr. 810 = 1)

PID measured value
PID deviation signal

Torque 
control

Speed limit

Torque command

Speed limit auxiliary input
Magnetic flux command

No function

Forward/reverse rotation speed limit
(analog polarity switchover speed 

limit)

Setting can be made 
when Pr. 807 = 2.

Position 
control

No function

No function (Pr. 810 = 0)

No function
Magnetic flux command

Torque limit 
(Pr. 810 = 1)

No function
Magnetic flux command

Regenerative torque limit

Setting can be made 
when Pr. 810 = 1.

Magnetic flux command is a function used to command magnetic flux (strength of magnetic flux) from the external analog 

 

terminal (1). In addition to torque command "terminal 3", the inverter can control torque using magnetic flux as a command. 

For example, the characteristic of motor torque is that output torque is constant independently of the output speed when 

exercising line feed/tension constant control on a winder, unwinder, etc. Constant power control by variable magnetic flux, 

equivalent to field excitation control of the DC shunt motor, can be exercised.

z If the difference (absolute value) between the 

speed command value and actual speed 
exceeds the Pr. 870 "speed deviation level" 
setting for longer than the time set in Pr. 871 
"speed deviation time", speed deviation 
excessive occurs and error "E. OSD" appears, 
resulting in a stop.

870

Speed deviation level

9999

0 to 1500r/min, 9999 9999:Invalid

Extended mode

871

Speed deviation time

12s

0 to 100s

- - -

1. Set these parameters when a speed difference will pose a problem.

2. This function is activated only under vector control.

3. When the motor with encoder is driven, setting the Pr. 851 "number of encoder pulses" value that is different from the 

actual number of encoder pulses may make control unstable, resulting in "E. OSD" (even if Pr. 870 = 9999).

speed

(r/min)

Set speed

Actual speed

Time

Speed deviation
excessive error activated
(E. OSD)

ON

OFF

Alarm output
(across A-C)

S

peed

Pr. 871

Pr. 870