Mitsubishi Electric FR-A700 EC, Instruction Manual

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Function assignment of external terminals Parameter
6 - 312
6.14.7 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.
When Pr. 570 Multiple rating setting
≠
"2", performing all parameter clear and inverter reset
changes the initial value and setting range. (Refer to section 6.7.5.)
Output current detection (Y12, 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
open collector or relay output terminal.
When the Y12 signal turns on, the ON state is held for the time set in Pr. 166 . 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".
Set "12 (source logic)" or "112 (sink 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.
Pr.
No.
Name
Initial
Value
Setting
Range
Description Parameters referred to
Refer to
Section
150
Output current detection
level
150%
0–220%
Set the output current detection level.
100% is the rated inverter current.
190–196
Online auto tuning
Offline auto tuning
Output terminal
function selection 6.12.3
6.12.4
6.14.5
151
Output current detection
signal delay time
0s 0–10s
Set the output current detection period.
Set the time from when the output cur-
rent has risen above the setting until the
output current detection signal (Y12) is
output.
152
Zero current detection
level
5% 0–250%
Set the zero current detection level. The
rated inverter current is assumed to be
100%.
153
Zero current detection
time
0.5s 0–1s
Set this parameter to define the period
from when the output current drops
below the Pr. 152 value until the zero
current detection signal (Y13) is output.
166
Output current detection
signal retention time
0.1s
0–10s
Set the retention time when the Y12 sig-
nal is on.
9999
The Y12 signal on status is retained. The
signal is turned off at the next start.
167
Output current detection
operation selection
0
0
Operation continues when the Y12 signal
is on.
1
The inverter is brought to an alarm stop
when the Y12 signal is on. (E.CDO)
I001155E
Fig. 6-138: Output current detection (Pr. 166
≠
9999, Pr. 167 = 0)
Output current
Pr. 150
Output current
detection signal Y12
Pr. 151
Pr. 166
(Minimum 100ms)
Time
ON