User Manual of EM760 High-Performance Inverter Bit setting = 0: when the inverter detects the protection corresponding to this bit, it will stop the output and enter the protection status. Bit setting = 1: when the inverter detects the protection corresponding to this bit, it will keep the original status without protection. This code is subject to bit operation. You only need to set the corresponding bit to 0 or 1. As shown in the table below: Table 6-19 Detailed Definition of Protection Shield Bits 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 ofprotection failure. 6.10.2 Motor protection The inverse time curve of motor overload protection is: 200% Ч(F07.01) Чrated current of the motor, sending an alarm ofmotor overload protection (E13) ifthe duration reaches one minute; 150% Ч (F07.01) Чrated 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 maybe 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 ofmotor overload for a protection warning. The larger this value, the less the warning is advanced. When the cumulative output current ofthe inverter is greater than the product ofthe 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”. 192 Mask 2 0: valid protection 1:
shielded protection F07.43 Warning shield * * * * * C32 C31 C30 000 O 0: valid protection 1: shielded 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 Function code Function codename 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 ●