Output Current Detection Function (Y12 Signal, Y13 Signal, Pr. 150 To Pr. 153, Pr. 166, Pr. 167) - Mitsubishi Electric FR-A720-0.4K Instruction Manual

4.15.7 Output current detection function
(Y12 signal, Y13 signal, Pr. 150 to Pr. 153, Pr. 166, Pr. 167)
The output power 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
Pr.166 9999, Pr.167 = 0
Pr.150
Output current
Pr.151
Output current
OFF
detection signal
(Y12)
Initial Value
150%
0s
5%
0.5s
0.1s
0
(1) Output current detection (Y12 signal, Pr. 150, Pr.
151, Pr. 166, Pr. 167)
⋅ 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 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 100ms
⋅ When the Y12 signal turns on, the ON state is held for the time
(initial value)
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", the inverter output is stopped and the
output current detection alarm (E.CDO) is displayed when the
Y12 signal turns on. When an alarm 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. E.CDO does not occur even if "1" is set in Pr.167 while
Y12 is ON. The Pr.167 setting is made valid after Y12 turns OFF.
⋅ Set "12 (positive logic)" or "112 (negative logic)" to any of Pr. 190
to Pr. 196 (output terminal function selection) to assign the function
of the Y12 signal to the output terminal.
Function assignment of external terminal and control
Setting Range
Set the output current detection level. 100%
0 to 220%
is the rated inverter current.
Set the output current detection period. Set
the time from when the output current has
0 to 10s
risen above the setting until the output current
detection signal (Y12) is output.
Set the zero current detection level. The rated
0 to 220%
inverter current is assumed to be 100%.
Set this parameter to define the period from
when the output current drops below the Pr.
0 to 1s
152 value until the zero current detection
signal (Y13) is output.
Set the retention time when the Y12 signal is
0 to 10s
on.
The Y12 signal on status is retained. The
9999
signal is turned off at the next start.
Operation continues when the Y12 signal is
0
on
The inverter is brought to an alarm stop when
1
the Y12 signal is on. (E.CDO)
Description
237
Pr.149
page 148
Pr.154
page 148
Pr.165
page 253
Pr.170
page 242
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