9-42
Low level current detection--(IDL)
(Function code data = 41)㩷
This signal is turned ON when the output current drops below the operation level specified by
function code E34 and stays in this status for the duration specified by function code E35 (on
delay timer).
If the output current exceeds the sum of the current level of operation and 5% of the rated
current of the inverter, then this signal is turned OFF.
Use this signal to indicate 0A output current due to a broken output wire, zero motor torque, or
any such factor undetectable by the inverter alarm facilities.
Function codes E34 and E35 are effective not only for the low level current
detection (IDL), but often also for the overload early warning (OL) and current
detection (ID).
Alarm relay contact output (for any fault)--(ALM)
(Function code data = 99)㩷
This signal is turned ON if the protection facility is activated so that the inverter enters Alarm
mode.
In a system which monitors inverter alarm information through [30A/B/C] relay contacts, make
sure that function code data of E20 or E27 is set to 99.
E31 Frequency Detection (FDT) (Detection level)
Specifies an operating level for the set frequency detection signal. The hysteresis frequency
band between detection and release levels is 1.0 Hz.
- Data setting range: 0.0 to 400.0 (Hz)
E34 Overload Early Warning/Current Detection/Low Current Detection (Level)
E35 Current Detection/Low Current Detection (Timer)
E34 and E35 set the operation level for overload early warning, current detection and low
current detection, and the timer count.
Operation Level (E34)
Sets the operation level for the motor overload early warning (OL), inverter output current
detection (ID), or low current output detection (IDL).
- Data setting range: Current value of 1 to 200% of the rated inverter current in units of
amperes.
Timer (E35)
Sets the timer for the inverter output current detection (ID) and low current output detection
(IDL).
- Data setting range: 0.01 to 600.00 (sec.)
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