Mitsubishi Electric FR-D720S SC EC Instruction Manual page 255

Parameter
6.9.7 Output current detection function
(Y12, Y13, Pr. 150 to Pr. 153, Pr. 166, Pr. 167)
The output power during inverter running can be detected and output to the output terminal.
Pr.
Name
No.
Output current detection
150
level
Output current detection
151
signal delay time
Zero current detection
152
level
Zero current detection
153
time
Output current detection
166
signal retention time
Output current detection
167
operation selection
The above parameters can be set when Pr. 160 = 0.
Output current detection (Y12, 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
open collector or relay output terminal. When Pr. 166 = "9999", the ON state is held until a next
start.
At the Pr. 166 setting of "1", the inverter trips, and the output current detection fault (E.CDO) is
displayed when the Y12 signal turns ON. When fault 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 valid after Y12 turns OFF
For the Y12 signal, set "12" (positive logic) or "112" (negative logic) in Pr. 190, Pr. 192 or Pr. 197
and assign functions to the output terminal.
Abb. 6-55: Output current detection (Pr. 166 ≠ 9999, Pr. 167 = 0)
FR-D700 SC EC
Initial Setting
Description
Value Range
Set the output current detection level.
150% 0–200%
100% is the rated inverter current.
Set the output current detection period.
Set the time from when the output cur-
0s 0–10s rent has risen above the setting until the
output current detection signal (Y12) is
output.
Set the zero current detection level.
5% 0–200% The rated inverter current is assumed to
be 100%.
Set this parameter to define the period
from when the output current drops
0.5s 0–1s
below the Pr. 152 value until the zero
current detection signal (Y13) is output.
Set the retention time when the Y12
0–10 s
signal is ON.
0.1 s
The Y12 signal ON status is retained. The
9999
signal is turned off at the next start.
Operation continues when the Y12 signal
0
is ON
0
The inverter is brought to trip when the
1
Y12 signal is ON. (E.CDO)
Output current
Pr. 150
Output current
detection signal Y12
Function assignment of external terminals
Pr. 151
Pr. 166
min. 100ms
ON
Parameters referred to
190/192/ Output terminal
197 function selection
Time
Refer to
Section
6.9.5
I001155E
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