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

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Parameters (H) Protective function parameter
FR-A800 5 - 331
Stall prevention operation level setting (analog variable) from terminal 1 (terminal 4)
(Pr. 148, Pr. 149, Pr. 858, Pr. 868)
●
To use the terminal 1 (analog voltage input) to set the stall prevention operation level, set Pr. 868
"Terminal 1 function assignment" = "4". Then, input a 0 to 5 V (or 0 to 10 V) to the terminal 1. To
choose whether 5 V or 10 V, use Pr. 73 "Analog input selection". In the initial status, Pr. 73 = "1 (initial
value)" is set to choose 0 to ±10 V input.
●
When setting the stall prevention operation level from terminal 4 (analog current input), set Pr. 858
"Terminal 4 function assignment" = "4".
●
Input 0 to 20 mA into terminal 4. There is no need to turn ON the AU signal.
●
Set Pr. 148 "Stall prevention level at 0 V input" to the current limit level when input voltage is 0 V
(0 mA).
●
Set Pr. 149 "Stall prevention level at 10 V input" to the current limit level when input voltage is
10 V/5 V (20 mA).
I002600E
Fig. 5-144: Stall prevention operation level setting by terminal 1
Pr. 858 setting Pr. 868 setting
V/F, Advanced magnetic flux vector control
Terminal 4 function Terminal 1 function
0
(initial value)
0
(initial value)
Frequency command
(AU signal-ON)
Auxiliary frequency
1
⎯
2
⎯
3
⎯
4
Stall prevention
5
⎯
6
⎯
9999
⎯
1
0
(initial value)
⎯
⎯
1
⎯
2
⎯
3
⎯
4
Stall prevention
5
⎯
6
⎯
9999
⎯
Tab. 5-125: Functions of terminal 1 and 4 in dependence of the control mode (1)
100%
50%
200%
150%
Set the current limit level at 10 V/5 V input
power (input current 20 mA) using Pr. 149.
Input voltage (V)
Input current (mA)
(5 V/10 V DC)
(20 mA)
Set the current limit level at 0 V input
voltage (input current 0 mA) using Pr. 148.
Current limit level (%)
Initial value
(–5 V/10 V DC)
0 V
0 mA