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Function assignment of external terminals and CC-Link communication virtual terminals
5.13.5 Output current detection function (Y12 signal, Y13 signal, Pr. 150 to Pr. 153)
The output current during inverter operation can be detected and output to terminal Y0 or a virtual terminal of CC-Link
communication.
Parameter
Number
Output current detection
150
level
Output current detection
151
signal delay time
Zero current detection
152
level
Zero current detection
153
time
The above parameters can be set when Pr. 160 User group read selection = "0". (Refer to page 197)
Pr. 150
Pr. 151
Output current
OFF
detection signal
(Y12)
Pr. 152
Pr. 152
0[A]
OFF ON
Start signal
Zero current
OFF
detection time
(Y13)
∗ The zero current detection signal (Y13) holds the
signal for approximately 100ms once turned ON.
REMARKS
This function is also valid during execution of the offline auto tuning.
The response time of Y12 and Y13 signals is approximately 0.1s. Note that the response time changes according to the load
condition.
When Pr. 152 = "0", detection is disabled.
172
Name
Initial Value
150%
0s
5%
0.5s
100ms
OFF
ON
100ms∗
OFF
ON
ON
Pr. 153
Pr. 153
Detection time
Detection time
Setting
Range
0 to 200%
100% is the rated inverter current.
Output current detection period.
The time from when the output current has risen
0 to 10s
above the setting until the output current detection
signal (Y12) is output.
0 to 200%
The rated inverter current is assumed to be 100%.
Period from when the output current drops below the
0 to 1s
Pr. 152 value until the zero current detection signal
(Y13) is output.
(1)
Output current detection
(Y12 signal, Pr. 150, Pr. 151)
The output current 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 the time set in Pr. 151 or longer,
the output current detection signal (Y12) is output from the
terminal Y0 or a virtual terminal of CC-Link communication.
Time
When the Y12 signal turns ON, the ON state is held for
approximately 100ms.
To assign the Y12 signal to the terminal Y0 or a virtual
terminal of CC-Link communication, set "12 (positive logic) or
112 (negative logic)" in one of Pr. 190 to Pr. 192 and Pr. 313 to
Pr. 315 (output terminal function selection).
(2)
Zero current detection (Y13 signal, Pr. 152, Pr. 153)
If the output current remains lower than the Pr. 152 setting
during inverter operation for longer than the time set in Pr.
153, the zero current detection (Y13) signal is output from the
inverter's open collector or relay output terminal.
When the inverter's output current falls to "0", torque will not
be generated. This may cause a drop due to gravity when
Time
the inverter is used in vertical lift application.
To prevent this, the Y13 signal, which closes the mechanical
brake at "0" output current, can be output from the terminal
Y0 or a virtual terminal of CC-Link communication.
To assign the Y13 signal to the terminal Y0 or a virtual
terminal of CC-Link communication, set "13 (positive logic) or
113 (negative logic)" in one of Pr.190 to Pr.192 and Pr.313 to
Pr.315 (output terminal function selection).
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