Mitsubishi Electric 800 Series Instruction Manual page 266

5.7.13 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 load
H521 reference 1
1482 Load characteristics load
H522 reference 2
1483 Load characteristics load
H523 reference 3
1484 Load characteristics load
H524 reference 4
1485 Load characteristics load
H525 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 detection
H533 width
1491 Lower limit fault detection
H534 width
1492 Load status detection signal
H535 delay time / load reference
measurement waiting time
Initial value Setting
range
0 0
1
2, 3, 4, 5, 81,
82, 83, 84, 85
9999 0 to 400%
9999
9999
9999
9999
60 Hz 0 to 590 Hz
6 Hz 0 to 590 Hz
20% 0 to 400%
9999
20% 0 to 400%
9999
9999 0 to 400%
9999
9999 0 to 400%
9999
1 s 0 to 60 s
Description
Load characteristics measurement mode is not started. (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
3
4
5
5
5
6
7
8
9
10
265
5. PARAMETERS