Output Torque Detection Function - Mitsubishi Electric FR-F820-00046 Instruction Manual

• To use the Y13 signal, set "13 (positive logic) or 113 (negative logic)" in any of Pr.190 to Pr.196 (Output terminal function
selection) to assign the function to the output terminal.
• Use Pr.167 to select the inverter operation at the time when Y13 signal turns ON, whether the inverter output stops or the
inverter operation continues.
Pr.167 = "0"
Output
current
Pr.152
Pr.152
0[A]
OFF ON
Start signal
OFF
Zero current
detection time
Pr.153
(Y13)
Detection time
∗ When the output is restored to the Pr.152 level, the Y13
signal is turned OFF after 0.1 s.
NOTE
• This function is enabled during online or offline auto tuning.
• The response time of the Y12 and Y13 signals is approximately 0.1 seconds. However, the response time varies according to
the load condition.
• When Pr.152 = "0", the zero current detection function is disabled.
• Changing the terminal assignment using Pr.190 to Pr.196 (Output terminal function selection) may affect the other
functions. Set parameters after confirming the function of each terminal.
CAUTION
• The setting of the zero current detection level should not be too low, and the setting of the zero current detection time
should not be too long. Doing so may cause the signal for the zero current detection not to be outputted when the output
current is very low and the motor torque is not generated.
• A safety backup such as an emergency brake must be provided to prevent machines or equipment in hazardous
conditions even if the Zero current detection is used.
Parameters referred to
Online auto tuningpage 382
Offline auto tuningpage 366, page 375
Pr.190 to Pr.196 (Output terminal function
5.8.9

Output torque detection function

Magnetic flux Magnetic flux Magnetic flux PM PM PM
If the motor torque which reaches a specific value is detected, the relative signal is output.
The signal is useful for applying or releasing electromagnetic brake, etc.
Pr. Name
864
Torque detection
M470
• The Torque detection (TU) signal turns ON when the motor output torque reaches the value of torque set in Pr.864 or
higher. The TU signal turns OFF when the motor output torque drops lower than the set value.
• Pr.864 is not available under V/F control.
0.1s ∗
Time
OFF
ON ON
Pr.153
Detection time
selection)page 312
Initial value
150%
Setting range
Set a value of the torque at which the TU
0 to 400%
signal turns ON.
5.8 (M) Item and output signal for monitoring
10
Description
323
5. PARAMETERS
1
2
3
4
5
6
7
8
9