Detection Of Output Frequency (Su, Fu, Fu2 Signal, Pr. 41 To Pr. 43, Pr. 50, Pr. 870); Detection Of Output Frequency - Mitsubishi Electric FR-F720P-0.75K to 110K Instruction Manual

Function assignment of external
terminal and control
4.11.6 Detection of output frequency (SU, FU, FU2 signal, Pr. 41 to Pr. 43, Pr. 50,
Pr. 870)
The inverter output frequency is detected and output to the output signal.
Parameter
Name
Number
41 Up-to-frequency sensitivity
42 Output frequency detection
Output frequency detection
43
for reverse rotation
Second output frequency
50
detection
870 Speed detection hysteresis
The above parameters can be set when Pr. 160 User group read selection = "0". (Refer to page 201)
* Performing IPM parameter initialization changes the settings. (Refer to page 80)
Set frequency
OFF
ON
SU
Forward
rotation
Output
signal
OFF OFF
ON
FU
OFF ON OFF
FU2
Parameter Output
Number Signals
42, 43 FU
50 FU2
144
Initial
Value
10%
6Hz
9999
30Hz
0Hz*
(1) Up-to-frequency sensitivity (SU signal, Pr. 41)
Adjustment
range Pr.41
⋅ When the output frequency reaches the set frequency, the up-to-frequency
signal (SU) is output.
⋅ The Pr. 41 value can be adjusted within the range ±1% to ±100% on the
assumption that the set frequency is 100%.
⋅ This parameter can be used to ensure that the set frequency has been
Time
reached to provide the operation start signal etc. for related equipment.
OFF
Pr.50
Pr.42
Time
Reverse Pr.43
rotation
Pr.50
OFF
ON
ON OFF
Pr. 190 to Pr. 196 Setting
Positive Negative
logic logic
4 104
5 105
Setting
Range
0 to 100% Set the level where the SU signal turns ON.
0 to 400Hz Set the frequency where the FU signal turns ON.
Set the frequency where the FU signal turns ON in
0 to 400Hz
reverse rotation.
9999 Same as Pr. 42 setting
0 to 400Hz Set the frequency where the FU2 signal turns ON.
0 to 5Hz Set the hysteresis width for the detected frequency.
(2) Output frequency detection (FU signal, FU2
signal, Pr. 42, Pr. 43, Pr. 50)
⋅ When the output frequency rises to or above the Pr. 42
setting, the output frequency detection signal (FU) is
output.
⋅ This function can be used for electromagnetic brake
operation, open signal, etc.
⋅ Frequency detection that is dedicated to reverse
operation can be set by setting detection frequency to Pr.
43. This function is effective for switching the timing of
electromagnetic brake operation between forward
rotation (rise) and reverse rotation (fall) during vertical lift
operation, etc.
≠ "9999", the Pr. 42 setting applies to
⋅ When Pr. 43
forward rotation and the Pr. 43 setting applies to reverse
rotation.
⋅ When outputting a frequency detection signal besides
the FU signal, set the detection frequency in Pr. 50. The
FU2 signal output when the output frequency reaches or
exceeds the Pr. 50 setting.
⋅ For each signal, assign functions to Pr. 190 to Pr. 196
(output terminal function selection) referring to the left
table.
Description