Load Characteristics Fault Detection - Mitsubishi Electric FR-A820-00046 Instruction Manual

Parameters
Parameters referred to
Pr. 22
Pr. 73
Pr. 178 to Pr. 189
Pr. 190 to Pr. 196
Pr. 858
Pr. 868
5.10.12

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.
1480
H520
1481
H521
1482
H522
1483
H523
1484
H524
1485
H525
1486
H526
1487
H527
1488
H531
1489
H532
1490
H533
1491
H534
1492
H535
FR-A800
Torque limit level
Analog input selection
(Input terminal function selection)
(Output terminal function selection)
Terminal 4 function assignment
Terminal 1 function assignment
Initial value
Name
FM
Load characteristics
measurement mode
Load characteristics
load reference 1
Load characteristics
load reference 2
Load characteristics
load reference 3
Load characteristics
load reference 4
Load characteristics
load reference 5
Load characteristics
60 Hz
maximum frequency
Load characteristics
minimum frequency
Upper limit warning
detection width
Lower limit warning
detection width
Upper limit fault
detection width
Lower limit fault
detection width
Load status detection
signal delay time / load
reference
measurement waiting
time
Setting range Description
CA
Load characteristics measurement is normally
0
completed.
Load characteristics measurement mode is
1
0
started.
2, 3, 4, 5, 81, 82, The load characteristics measurement status is
83, 84, 85 displayed. (Read-only)
9999
9999
Set the reference value of normal load
characteristics.
9999 0 to 400% 8888: The present load status is written as
reference status.
9999: The load reference is invalid.
9999
9999
Set the maximum frequency of the load
50 Hz 0 to 590 Hz
characteristics fault detection range.
Set the minimum frequency of the load
6 Hz 0 to 590 Hz
characteristics fault detection range.
Set the detection width when the upper limit
0 to 400%
load fault warning is output.
20%
9999 Function disabled
Set the detection width when the lower limit load
0 to 400%
fault warning is output.
20%
9999 Function disabled
Set the detection width when output is shut off
0 to 400%
when the upper limit load fault occurs.
9999
9999 Function disabled
Set the detection width when output is shut off
0 to 400%
when the lower limit load fault occurs.
9999
9999 Function disabled
Set the waiting time after the load fault is
detected until warning output or output shutoff.
In the load characteristics measurement mode,
1 s 0 to 60 s
set the waiting time after the load measurement
frequency is reached until the load reference is
set.
(H) Protective function parameter
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=> page 5-439
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