User Manual of A90 Series Inverter
182
Table 7-8 Detailed Definition of Shield Bit for Fault Protection
Protection
code
E20
E22
E13
E06
E05
E04
E07
E08
Corresponding
bit
7
6
5
4
3
2
1
0
Settings
0/1
0/1
0/1
0/1
0/1
0/1
0/1
0/1
For example: To shield the
E07
protection, you only need to set the first bit
corresponding to
E07
to 1, i.e. F07.00=xxx xxx1x.
To shield the
E08
and
E13
protection, you only need to set the 0
th
bit corresponding to
E08
and the 5
th
bit corresponding to
E13
to 1. That is, F07.00=xx1 xxxx1.
Unless there are special needs, please do not shield any protection function, so as
to prevent the inverter from damage as a result of no protective action after
failure.
Function
code
Function code name
Parameter description
Unit
Default
setting
Attribute
F07.01
Motor overload
protection gain
0.20 - 10.00
1.00
●
F07.02
Motor overload
pre-alarm coefficient
50 - 100
%
80
●
The inverse time curve of motor overload protection is: 200% × (F07.01) × rated
current of the motor, sending an alarm of motor overload fault (
E13
) if the duration reaches
one minute; 150% × (F07.01) ×rated current of the motor, sending an alarm of motor
overload (
E13
) if the duration reaches 15 minutes.
The user needs to set F07.01 correctly according to the actual overload capacity of the
motor. If the set value is too large, the motor may be damaged as a result of overheat but the
inverter may not send an alarm!
The F07.02 warning coefficient is used to determine the extent of motor overload for a
protection warning. The larger this value, the less the warning is advanced.
When the cumulative output current of the inverter is greater than the product of the
inverse time curve of load by F07.02, the multi-function digital DO terminal of the inverter
will output the valid signal “17: Motor overload pre-alarm”.
★
: The motor overheat fault (
E12
) cannot be reset immediately. You must wait until the
