N700 Operating Instructions and Parts Manual
14. Protection function
149
Name
Description
Display of
standard
operator
Display of
digital
operator
When an instantaneous over -current is detected, on the output the inverter
output is switched off to protect the main devices. - output phase U
E28 UIGBT.ERR
When an instantaneous over -current is detected, on the output the inverter
output is switched off to protect the main devices. - output phase V
E29 VIGBT.ERR
IGBT protection
When an instantaneous over -current is detected, on the output the inverter
output is switched off to protect the main devices. - output phase W
E30 WIGBT.ERR
Option error
These indicate the error of option PCB 1,2. You can refer to the details of
option PCB’s instruction manual
E31 OPT.ERR
Over speed error This is displayed when the motor rotation speed exceeds.
E32
RESVD
Table 14- 1 Protection function List
Note) When a trip occurs, please proceed with reset operation after that you first find the cause of the fault.
14.2
Trip monitor display
(1) The conditions at the time of an error provide important clues to help you understand the
cause. The inverter displays a “status at trip point” digit to the right of the decimal point for the
same error codes.
(2) For example, E07.2 means Error E07 occurred and the inverter status was condition 2(During
deceleration) when the error occurred.
Fig. 14- 1 Trip monitor display