Mitsubishi Electric FR-A800, Instruction Manual

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Parameters (M) Monitor display and monitor output signal
FR-A800 5 - 377
5.11.8 Output current detection function
The output current during inverter running can be detected and output to the output terminal.
Output current detection (Y12 signal, Pr. 150, Pr. 151, Pr. 166, Pr. 167)
●
The output current detection function can be used for purposes such as overtorque detection.
●
If the output during inverter running remains higher than the Pr. 150 setting for the time set in
Pr. 151 or longer, the Output current detection (Y12) signal is output from the inverter's open
collector or relay output terminal.
●
When the Y12 signal turns ON, the ON state is retained for the time set in Pr. 166.
●
When Pr. 166 = "9999", the ON state is retained until the next start.
●
Setting Pr. 167 = "1" while the Y12 signal is ON does not cause E.CDO. The Pr. 167 setting becomes
valid after the Y12 signal is turned OFF.
●
For the Y12 signal, set "12 (positive logic) or 112 (negative logic)" in any of Pr. 190 to Pr. 196 (output
terminal function selection) to assign the function to the output terminal.
Pr. Name Initial value Setting range Description
150
M460
Output current detection
level
150% 0 to 220%
Set the output current detection level.
100% is the rated inverter current.
151
M461
Output current detection
signal delay time
0s 0 to 10 s
Set the output current detection time. Set the
time from when the output current reaches the
setting or higher until the output current
detection (Y12) signal is output.
152
M462
Zero current detection
level
5% 0 to 220%
Set the zero current detection level.
The rated inverter current is regarded as 100%.
153
M463
Zero current detection
time
0.5s 0 to 10 s
Set the time from when the output current
drops to the Pr. 152 setting or lower until the
zero current detection (Y13) signal is output.
166
M433
Output current detection
signal retention time
0.1s
0 to 10 s
Set the retention time when the Y12 signal is
ON.
9999
Retain the Y12 signal ON status. The signal is
turned OFF at the next start.
167
M464
Output current detection
operation selection
0 0, 1, 10, 11
Select the operation at turn on of the Y12 and
Y13 signals.
I001155E
Fig. 5-175: Output current detection (Pr. 166
≠
9999, Pr. 167 = 0)
Output current
Pr. 151
Pr. 166
ON OFF OFF
Pr. 150
Output current
detection signal
(Y12)
Time
Pr. 166
≠
"9999", Pr. 167 = "0"