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Mitsubishi Electric FR-F740-00023 Instruction Manual: Output Current Detection Function

F700 series.
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4.10.7 Output current detection function

(Y12 signal, Y13 signal, Pr. 150 to Pr. 153, Pr. 166, Pr. 167)
The output current during inverter running can be detected and output to the output terminal.
Parameter
Name
Number
Output current detection
150
level
Output current detection
151
signal delay time
152
Zero current detection level
153
Zero current detection time
Output current detection
166
signal retention time
Output current detection
167
operation selection
The above parameters can be set when Pr. 160 User group read selection = "0". (Refer to page 173)
* When Pr. 570 Multiple rating setting = "1", performing inverter reset and all parameter clear changes the initial value and setting
range. (Refer to page 75.)
9999, Pr. 167 = 0
Pr. 166
Pr. 150
Output current
Pr. 151
Output current
detection signal
OFF
(Y12)
Initial Value
110%*
0s
5%
0.5s
0.1s
0
(1) Output current detection (Y12 signal, Pr. 150, Pr.
151, Pr. 166, Pr. 167)
The output power detection function can be used for excessive
torque detection, etc.
If the output current remains higher than the Pr. 150 setting during
inverter operation for longer than the time set in Pr. 151, the
output current detection signal (Y12) is output from the inverter's
Time
Pr. 166
open collector or relay output terminal.
Minimum 0.1s
(initial value)
When the Y12 signal turns ON, the ON state is held for the time
set in Pr. 166 .
OFF
ON
When Pr. 166 = "9999", the ON state is held until a next start.
At the Pr. 167 setting of "1" or "11", the inverter output is stopped
and the output current detection fault (E.CDO) is displayed when
the Y12 signal turns ON. When a fault stop occurs, the Y12
signal is ON for the time set in Pr. 166 at the Pr. 166 setting of
other than "9999", and remains ON until a reset is made at the Pr.
166 setting of "9999". Setting Pr. 167 = "1" or "11" at Y12 signal
ON does not cause E.CDO. Setting to Pr. 167 becomes effective
after Y12 is turned OFF.
For the X12 signal, set "12 (positive logic)" or "112 (negative
logic)" in any of Pr. 190 to Pr. 196 (output terminal function selection)
and assign the function to the output terminal.
Function assignment of external
Setting
Range
Set the output current detection level. 100% is the
0 to 120%*
rated inverter current.
Set the output current detection period. Set the
time from when the output current has risen above
0 to 10s
the setting until the output current detection signal
(Y12) is output.
Set the zero current detection level. The rated
0 to 150%
inverter current is assumed to be 100%.
Set the time period from when the output current
0 to 10s
drops below the Pr. 152 value until when the zero
current detection signal (Y13) is output.
0 to 10s
Set the retention time when the Y12 signal is on.
The Y12 signal on status is retained. The signal is
9999
turned off at the next start.
Y12 Signal - ON
0
Operation continued
1
Fault stop (E.CDO)
10
Operation continued
11
Fault stop (E.CDO)
terminal and control
Description
Y13 Signal - ON
Operation continued
Operation continued
Fault stop (E.CDO)
Fault stop (E.CDO)
121
4

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