Load Characteristics Fault Detection - Mitsubishi Electric FR-F820-00046 Instruction Manual

Fr-f800 series
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5.7.12 Load characteristics fault detection

This function is used to monitor whether the load is operating in normal condition by storing the speed/torque relationship in
the inverter to detect mechanical faults or for maintenance. When the load operating condition deviates from the normal range,
the protective function is activated or the warning is output to protect the inverter or the motor.
Pr.
Name
1480
Load characteristics
H520
measurement mode
1481
Load characteristics
H521
load reference 1
1482
Load characteristics
H522
load reference 2
1483
Load characteristics
H523
load reference 3
1484
Load characteristics
H524
load reference 4
1485
Load characteristics
H525
load reference 5
1486
Load characteristics
H526
maximum frequency
1487
Load characteristics
H527
minimum frequency
1488
Upper limit warning
H531
detection width
1489
Lower limit warning
H532
detection width
1490
Upper limit fault
H533
detection width
1491
Lower limit fault
H534
detection width
Load status detection
signal delay time / load
1492
reference
H535
measurement waiting
time
 Load characteristics setting (Pr.1481 to Pr.1487)
• Use Pr.1481 to Pr.1485 to set the reference value of load characteristics.
Initial value
Setting
range
FM
CA
0
1
0
2, 3, 4, 5,
81, 82, 83,
84, 85
9999
9999
9999
0 to 400%
9999
9999
60 Hz
50 Hz
0 to 590 Hz
6 Hz
0 to 590 Hz
0 to 400%
20%
9999
0 to 400%
20%
9999
0 to 400%
9999
9999
0 to 400%
9999
9999
1 s
0 to 60 s
Description
Load characteristics measurement is normally completed.
Load characteristics measurement mode is started.
The load characteristics measurement status is displayed. (Read-only)
Set the reference value of normal load characteristics.
8888: The present load status is written as reference status.
9999: The load reference is invalid.
Set the maximum frequency of the load characteristics fault detection
range.
Set the minimum frequency of the load characteristics fault detection
range.
Set the detection width when the upper limit load fault warning is output.
Function disabled
Set the detection width when the lower limit load fault warning is output.
Function disabled
Set the detection width when output is shut off when the upper limit load
fault occurs.
Function disabled
Set the detection width when output is shut off when the lower limit load
fault occurs.
Function disabled
Set the waiting time after the load fault is detected until warning output
or output shutoff.
In the load characteristics measurement mode, set the waiting time
after the load measurement frequency is reached until the load
reference is set.
5.7 (H) Protective function parameter
1
2
3
4
5
6
7
8
9
10
281
5. PARAMETERS

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