Detection Of Output Frequency (Su, Fu, Fu2 Signal, Pr. 41 To Pr. 43, Pr. 50) - Mitsubishi Electric F700 Instruction Manual

3.9.6

Detection of output frequency (SU, FU, FU2 signal, Pr. 41 to Pr. 43, Pr. 50)

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
The above parameters can be set when Pr. 160 User group read selection = "0". (Refer to page 140)
Running frequency
OFF
ON
SU
Forward
rotation
Output
frequency
OFF
ON
FU
OFF ON
FU2
Parameter Output
Number Signals
42
FU
43
50 FU2
CAUTION
⋅ When terminal assignment is changed using Pr. 190 to Pr. 196 (output terminal function selection), the other functions may be
affected. Please make setting after confirming the function of each terminal.
♦ Parameters referred to ♦
Pr. 190 to Pr. 196 (output terminal function selection)
Initial
Value
10%
6Hz
9999
30Hz
(1) Up-to-frequency sensitivity (SU signal, Pr. 41)
⋅ When the output frequency reaches the running 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%.
Adjustment
range Pr.41 ⋅ This parameter can be used to ensure that the running frequency has
been reached to provide the operation start signal etc. for related
equipment.
REMARKS
Time
The output frequency compared with the set frequency changes depending
on the control system.
OFF
Control system
V/F control
Simple magnetic flux
vector control
Pr.50
Pr.42
Time
Pr.43
Reverse
rotation Pr.50
OFF OFF
ON
OFF ON OFF
Refer to page 91
Function assignment of external
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.
Compared output frequency
Output frequency
Output frequency before slip compensation
(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.
⋅ When the detection frequency is set in Pr. 43,
frequency detection for reverse operation use only can
also be set. 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.
⋅ When Pr. 43 "Output frequency detection for reverse
≠ "9999", the Pr. 42 setting applies to forward
rotation"
rotation and the Pr. 43 setting applies to reverse
rotation.
⋅ When outputting a frequency detection signal besides
the FU signal, set the detection frequency to Pr. 50 . The
FU2 signal is output when the output frequency reaches
or exceeds the Pr. 50 setting.
⋅ When using the FU2 signal, set "5 (positive logic)" or
"105 (negative logic)" to any of Pr. 190 to Pr. 196 (output
terminal function selection) to assign the function to the
output terminal.
terminal and control
Description
95
Pr. 37
page 99
Pr. 44
page 74
Pr. 49
page 56
Pr. 51
page 78
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