Output Frequency Detection - Mitsubishi Electric FR-F820-04750 Instruction Manual

(M) Monitor display and monitor output signal
Input MC shutoff signal (Y91)
● The Fault output 3 (Y91) signal is output when a fault originating in the inverter circuit or a
connection fault occurs.
● To use the Y91 signal, set "91 (positive logic) or 191 (negative logic)" in any of Pr. 190 to Pr. 196
(output terminal function selection) to assign the function to the output terminal.
● The following table shows the faults that output the Y91 signal. (For the fault details, refer to page 6-9.)
Fault record
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 V DC power fault (E.P24)
Operation panel power supply short circuit
RS-485 terminal 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)
Tab. 5-104: Faults that lead to Y91 signal output
Parameters referred to
Pr. 13
Pr. 76
5.8.7

Output frequency detection

The inverter output frequency is detected and output as output signals.
Pr.
41
M441
42
M442
43
M443
50
M444
870
M400
5 - 234
Starting frequency
Fault code output selection
Initial value
Name
FM
Up-to-frequency
sensitivity
Output frequency
detection
Output frequency
detection for reverse
rotation
Second output frequency
detection
Speed detection
hysteresis
Setting range Description
CA
10% 0 to 100% Set the level where the SU signal turns ON.
Set the frequency where the FU (FB) signal turns
6 Hz 0 to 590 Hz
ON.
Set the frequency where the FU (FB) signal turns
0 to 590 Hz
ON in reverse rotation.
9999
9999 Same as the Pr. 42 setting.
Set the frequency where the FU2 (FB2) signal
30 Hz 0 to 590 Hz
turns ON.
Set the hysteresis width for the detected
0 Hz 0 to 5 Hz
frequency.
Parameters
=> page 5-112, page 5-114
=> page 5-246