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

 Overheat protection to match the characteristic of the motor (Pr.600 to
Pr.604, Pr.692 to Pr.696)
• The activation level of the electronic thermal O/L relay can be varied to match the motor temperature characteristic.
• The electronic thermal O/L relay operation level can be set with the combination of three points (Pr.600, Pr.601), (Pr.602,
Pr.603), (Pr.604, Pr.9). Two or more points are required for setting.
• The electronic thermal O/L relay operation level can be set with the combination of three points (Pr.692, Pr.693), (Pr.694,
Pr.695), (Pr.696, Pr.51) when the RT signal is ON.
Continuous operation characteristic
Load ratio (ratio to Pr.9 (Pr.51)) [%]
100%
Pr.603
(Pr.695)
Pr.601
(Pr.693)
Pr.600 Pr.602 Pr.604
(Pr.692) (Pr.694) (Pr.696)
Setting
Load ratio
example 1
100%
Pr.9=100% of the rated
70%
motor current
Pr.600=6Hz
50%
Pr.601=50%
Pr.602=30Hz
Pr.603=70%
Pr.604=60Hz
6Hz
• When setting Pr.600, Pr.602, Pr.604 (Pr.692, Pr.694, Pr.696) to the same frequency, the following graph's upper level is
applied.
Load ratio [%]
100
80
50
10 Outout frequency[Hz]
NOTE
• Make sure to set the parameters according to the temperature characteristic of the motor used.
Parameters referred to
Pr.71 Applied motorpage 505
Pr.72 PWM frequency selectionpage 339
Pr.178 to Pr.189 (Input terminal function
Pr.190 to Pr.196 (Output terminal function

5.10.2 Fault definition

Fault output can be done after deceleration stop when motor thermal protection is activated.
Pr. Name
875
Fault definition
H030
 Output shutoff at activation of any protective function (Pr.875 = "0" initial
value)
• At activation of a protective function, output is shutoff, and the alarm output 2 signal (ER) and the fault signal (ALM) are
output.
Output frequency
example 2
Pr.600=120Hz
Pr.601=60%
Pr.602=3Hz
Pr.603=50%
Pr.604=60Hz
30Hz 60Hz
Frequency
Pr.600 = 10Hz
Pr.601 = 80%
Pr.602 = 10Hz
Pr.603 = 50%
Pr.604 = 10Hz
selection)page 496
selection)page 450
Initial value Setting range
0
0
1
Load ratio
Setting
100%
60%
50%
3Hz
Normal operation
Decelerates to stop at activation of motor thermal protection.
Frequency
60Hz 120Hz
Description
5. PARAMETERS
5.10 (H) Protective function parameter
1
2
3
4
5
6
7
8
9
10
401