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E34, E35
Overload Early Warning/Current Detection (Level and Timer)
E37, F38 (Current Detection 2/Low Current Detection (Level and Timer))
E55, E56 (Current Detection 3 (Level and Timer))
These function codes define the detection level and time for the "Motor overload early warning"
OL
, "Current detected"
ID
,
"Current detected 2"
ID2
, "Current detected 3"
ID3
, and "Low current detected"
IDL
output signals.
Output
signal
Data assigned to
output terminal
Operation level
Timer
Motor characteristics Thermal time constant
Range: See below Range: 0.01 to 600.00 s Range: See below
Range: 0.5 to 75.0 min
OL
7 E34
-
F10
F12
ID
37 E34 E35
- -
ID2
38 E37 E38
ID3
39 E55 E56
IDL
41 E37 E38
- Data setting range
Operation level: 0.00 (Disable), 1 to 200% of inverter rated current
Motor characteristics 1: Enable (For a general-purpose motor with shaft-driven cooling fan)
2: Enable (For an inverter-driven motor, non-ventilated motor, or motor with separately powered
cooling fan)
Motor
overload early warning signal --
OL
The
OL
signal is used to detect a symptom of an overload condition (alarm code
0l1
) of the motor so that the user can
take an appropriate action before the alarm actually happens.
The
OL
signal turns ON when the inverter output current exceeds the level specified by E34. In typical cases, set E34 data to
80 to 90% against F11 data (Electronic thermal overload protection for motor 1, Overload detection level). Specify also the
thermal characteristics of the motor with F10 (Select motor characteristics) and F12 (Thermal time constant).
Current detected, Current detected 2 and Current detected 3 --
ID
,
ID2
and
ID3
When the inverter output current exceeds the level specified by E34, E37 or E55 for the period specified by E35, E38 or E56,
the
ID
,
ID2
or
ID3
signal turns ON, respectively. When the output current drops below 90% of the rated operation level, the
ID
,
ID2
or
ID3
turns OFF. (The minimum ON-duration is 100 ms.)
Low current detected --
IDL
This signal turns ON when the output current drops below the level specified by E37 (Low current detection, Level) for the
period specified by E38 (Timer). When the output current exceeds the "Low current detection level plus 5% of the inverter
rated current," it goes OFF. (The minimum ON-duration is 100 ms.)
Содержание FRENIC-MEGA
Страница 36: ...2 6 Unit inch mm Refer to Section 2 3 3 9...
Страница 208: ...5 89 Examples of Sequence Circuits 1 Standard sequence 2 Sequence with an emergency switching function...
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