Output Frequency Detection - Mitsubishi Electric FR-A800 Series Instruction Manual

• The following is the list of faults that output the Y91 signal. (For details on 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 (control circuit board) (E.PE)
Parameter storage device fault (main circuit board) (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
details on the PLC function, refer to the PLC Function Programming Manual.)
Parameters referred to
Pr.13 Starting frequencypage
Pr.76 Fault code output

5.11.7 Output frequency detection

If the inverter output frequency which reaches a specific value is detected, the relative signal is output.
Pr.
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
SU
484
5. PARAMETERS
5.11 (M) Item and output signal for monitoring
Downloaded from ManualsNet.com
Fault type
381, page 382
selectionpage 492
Initial value
Name
FM CA
10%
6 Hz
9999
30 Hz
60 Hz 50 Hz
1.5 Hz
0 Hz
Adjustment
range Pr.41
Time
OFF
ON
search engine
Setting
range
0 to 100% Set the level where the SU signal turns ON.
0 to 590 Hz 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
0 to 590 Hz
while the motor rotates in reverse direction.
9999 The frequency same as the Pr.42 setting is set.
0 to 590 Hz Set the frequency at which the FU2 (or FB2) signal turns ON.
0 to 590 Hz Set the frequency at which the FU3 (or FB3) signal turns ON.
0 to 590 Hz Set the frequency at which the LS signal turns ON.
0 to 5 Hz Set the hysteresis width for the detected frequency.
page 779.)
Description