5.Description of Function Codes
EM15 User's Manual
72
It is used to set the waiting time from the frequency inverter alarm to fault auto reset.
bb-12
Input phase loss protection/contactor energizing protection selection
Default
11
Setting
Range
Unit's digit: Input phase loss protection
0
Disabled
1
Enabled
Ten's digit: Contactor energizing protection 0,1( same as Unit’s digit)
It is used to determine whether to perform input phase loss or contactor energizing protection.
The EM15 models that provide this function are listed in the following table.
Voltage Class
Models
Single-phase 220 V
None
Three-phase 220 V
From 4 kW G model
Three-phase 380 V
From 7.5 kW G model
Three-phase 690 V
From 55 kW G model
For every voltage class, the EM15 frequency inverters provide function of input phase loss or contactor energizing
protection for above model. The EM15 Frequency inverters do not have this function below the power listed in the
table no matter whether bb-12 is set to 0 or 1.
bb-13
Output phase loss protection
Default
1
Setting
Range
0
Disabled
1
Enabled
It is used to determine whether to perform output phase loss protection.
bb-14
Off load protection
Default
0
Setting
Range
0
Disabled
1
Enabled
bb-15
Off load detection level
Default
10.0%
Setting Range
0.0%~100.0% (rated motor current)
bb-16
Off load detection time
Default
1.0s
Setting Range
0.0s~60.0s
If off load protection is enabled, when the output current of the frequency inverter is lower than the detection level
(bb-15) and the duration time exceeds the detection time (bb-16), the output frequency of frequency inverter
automatically declines to 7% of the rated frequency. During the protection, the frequency inverter automatically
accelerates to the set frequency if the load restore to normal.
bb-17
Over-speed detection value
Default
20.0%
Setting Range
0.0%~50.0% (maximum frequency)
bb-18
Over-speed detection time
Default
1.0s
Setting Range
0.0s~60.0s
This function is valid only when the frequency inverter runs in the VC+PG mode.
If the actual motor rotational speed detected by the frequency inverter exceeded the maximum frequency and the
excessive value is greater than the value of bb-17 and the lasting time exceeded the value of bb-18, the frequency
inverter reports Err43 and acts according to the selected fault protection action.
If the bb-18(over-speed detection time) is 0.0s, the over-speed detection function is disabled.