Mitsubishi Electric FR-A820-00046 (0.4K) Instruction Manual page 489

 Relationship between the analog input terminal function and the
calibration parameter
• Calibration parameter according to the terminal 1 function
Pr.868
Terminal function
setting
0
Auxiliary Frequency (speed)
(initial
setting
value)
1 Magnetic flux command
2 Regenerative driving torque limit
3 Torque command
Stall prevention operation
*1
4
level /
torque limit / torque command
Forward/reverse rotation speed
5
limit
6 Torque bias input
9999 No function
*1 Use Pr.148 Stall prevention level at 0 V input and Pr.149 Stall prevention level at 10 V input to adjust bias and gain for setting the stall
prevention operation level.
• Calibration parameter according to the terminal 4 function
Pr.858
Terminal function
setting
0
Frequency (speed) command /
(initial
speed limit
value)
1 Magnetic flux command
Stall prevention operation level
*2
4
/
torque limit
9999 No function
*2 Use Pr.148 Stall prevention level at 0 V input and Pr.149 Stall prevention level at 10 V input to adjust bias and gain for setting the stall
prevention operation level.
 To change the torque for the maximum analog input (C18 (Pr.920), C40
(Pr.933))
• Use C18 (Pr.920) or C40 (Pr.933) to change the torque setting (gain) for the maximum analog input voltage (current).
 Analog input bias/gain calibration (C16 (Pr.919) to C19 (Pr.920), C38
(Pr.932) to C41 (Pr.933))
• The "bias" and "gain" functions serve to adjust the relationship between a setting input signal and the torque. A setting
input signal is such as a 0 to 5 VDC, 0 to 10 VDC, or 4 to 20 mADC signal externally input to set the torque command or
the torque limit.
• Set the bias torque of the terminal 1 input using C16 (Pr.919). (The initial value is the torque for 0 V.)
• Use C18 (Pr.920) to set the torque to the torque command voltage set by Pr.73 Analog input selection. (Initial value is
10 V.)
488
5. PARAMETERS
5.12 (T) Multi-function input terminal parameters
Bias setting
C2 (Pr.902) Terminal 2 frequency setting
bias frequency
C3 (Pr.902) Terminal 2 frequency setting
bias
C5 (Pr.904) Terminal 4 frequency setting
bias frequency
C6 (Pr.904) Terminal 4 frequency setting
bias
C16 (Pr.919) Terminal 1 bias command
(torque)
C17 (Pr.919) Terminal 1 bias (torque)
C16 (Pr.919) Terminal 1 bias command
(torque)
C17 (Pr.919) Terminal 1 bias (torque)
C12 (Pr.917) Terminal 1 bias frequency
(speed)
C13 (Pr.917) Terminal 1 bias (speed)
C16 (Pr.919) Terminal 1 bias command
(torque)
C17 (Pr.919) Terminal 1 bias (torque)
—
Bias setting
C5 (Pr.904) Terminal 4 frequency setting
bias frequency
C6 (Pr.904) Terminal 4 frequency setting
bias
C38 (Pr.932) Terminal 4 bias command
(torque)
C39 (Pr.932) Terminal 4 bias (torque)
C38 (Pr.932) Terminal 4 bias command
(torque)
C39 (Pr.932) Terminal 4 bias (torque)
—
Calibration parameter
Gain setting
Pr.125 Terminal 2 frequency setting gain
frequency
C4 (Pr.903) Terminal 2 frequency setting
gain
Pr.126 Terminal 4 frequency setting gain
frequency
C7 (Pr.905) Terminal 4 frequency setting
gain
C18 (Pr.920) Terminal 1 gain command
(torque)
C19 (Pr.920) Terminal 1 gain (torque)
C18 (Pr.920) Terminal 1 gain command
(torque)
C19 (Pr.920) Terminal 1 gain (torque)
C14 (Pr.918) Terminal 1 gain frequency
(speed)
C15 (Pr.918) Terminal 1 gain (speed)
C18 (Pr.920) Terminal 1 gain command
(torque)
C19 (Pr.920) Terminal 1 gain (torque)
—
Calibration parameter
Gain setting
Pr.126 Terminal 4 frequency setting gain
frequency
C7 (Pr.905) Terminal 4 frequency setting
gain
C40 (Pr.933) Terminal 4 gain command
(torque)
C41 (Pr.933) Terminal 4 gain (torque)
C40 (Pr.933) Terminal 4 gain command
(torque)
C41 (Pr.933) Terminal 4 gain (torque)
—