Mitsubishi Electric FR-F820-00046 Instruction Manual page 321

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
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
 Output frequency detection (FU (FB) signal, FU (FB2) signal, Pr.42, Pr.43,
Pr.50)
• The Output frequency detection (FU/FU2) signal or the Speed detection (FB/FB2) signal is useful for applying or releasing
electromagnetic brake, etc.
• The FU signal is output when the output frequency (frequency command value) reaches or exceeds the Pr.42 setting.
• During PM motor control, the FB signal is output when the estimated actual motor rotations per minute reaches the Pr.42
setting. Under V/F control and Advanced magnetic flux vector control, the FU signal and the FB signal are output at the
same time.
• The frequency detection dedicated to motor rotation in reverse direction is enabled by setting the frequency in Pr.43.
• When Pr.43 ≠ "9999", the Pr.42 setting is for the forward rotation operation and the Pr.43 setting is for the reverse rotation
operation.
• When a different detection point of the frequency is required, Pr.50 is available. The FU2 (or FB2) signal can be set to be
output when the output frequency reaches the Pr.50 setting or higher.
Output
signal
FU (FB) OFF
FU2 (FB2) OFF
320
5. PARAMETERS
5.8 (M) Item and output signal for monitoring
Initial value
FM CA
10% 0 to 100%
6 Hz 0 to 590 Hz
0 to 590 Hz
9999
9999
30 Hz 0 to 590 Hz
0 Hz 0 to 5 Hz
Adjustment
range Pr.41
Time
OFF
Forward
rotation
Pr.50
Pr.42
Reverse
rotation
ON OFF
ON OFF
Setting
range
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 hysteresis width for the detected frequency.
Pr.43
Time
Pr.50
ON OFF
ON OFF
Description