Output Frequency Detection - Mitsubishi Electric FR-A820-00046 (0.4K) Instruction Manual

• The following is the list of faults that output the Y91 signal. (For the details of faults, refer to
Inrush current limit circuit fault (E.IOH)
CPU fault (E.CPU)
CPU fault (E.6)
CPU fault(E.7)
Parameter storage device fault (E.PE)
Parameter storage device fault (E.PE2)
24 VDC power fault (E.P24)
Operation panel power supply short circuit/RS-485 terminals power supply short circuit
(E.CTE)
Output side earth (ground) fault overcurrent (E.GF)
Output phase loss (E.LF)
Brake transistor alarm detection (E.BE)
Internal circuit fault (E.13/E.PBT)
 Changing the special relay function for the PLC function
• For the PLC function, the function of special relays (SM1225 to SM1234) can be changed by setting Pr.313 to Pr.322. (For
the details of the PLC function, refer to the FR-A800 PLC Function Programming Manual.)
Parameters referred to
Pr.13 Starting frequencypage 363,
Pr.76 Fault code output selectionpage 469

5.11.7 Output frequency detection

If the inverter output frequency which reaches a specific value is detected, the relative signal is output.
Pr. Name
41 Up-to-frequency
M441 sensitivity
42 Output frequency
M442 detection
Output frequency
43
detection for reverse
M443
rotation
50 Second output
M444 frequency detection
116 Third output frequency
M445 detection
865
Low speed detection
M446
870 Speed detection
M400 hysteresis
 Setting the notification zone of the output frequency reaching the set
point (SU signal, Pr.41)
• The Up to frequency (SU) signal is output when the output frequency reaches the set frequency.
• Set the value in the range of 1 to 100% in Pr.41 to determine tolerance for the set frequency (considered as 100% point).
• It may be useful to use this signal to start operating related equipment after checking that the set frequency has been
reached.
Set frequency
OFF
ON
SU
Fault name
page 364
Initial value
Setting
range
FM CA
10% 0 to 100%
6 Hz 0 to 590 Hz
0 to 590 Hz
9999
9999
30 Hz 0 to 590 Hz
60 Hz 50 Hz 0 to 590 Hz
1.5 Hz 0 to 590 Hz
0 Hz 0 to 5 Hz
Adjustment
range Pr.41
Time
OFF
page
Description
Set the level where the SU signal turns ON.
Set the frequency at which the FU (or FB) signal turns ON.
Set the frequency at which the FU (or FB) signal turns ON only
while the motor rotates in reverse direction.
The frequency same as the Pr.42 setting is set.
Set the frequency at which the FU2 (or FB2) signal turns ON.
Set the frequency at which the FU3 (or FB3) signal turns ON.
Set the frequency at which the LS signal turns ON.
Set the hysteresis width for the detected frequency.
5.11 (M) Item and output signal for monitoring
745.)
1
2
3
4
5
6
7
8
9
10
461
5. PARAMETERS