EXPERT Standard Series User Manual
92
Fault
Code Fault Type
Possible Fault Reasons
Countermeasures
Operation panel EEPROM is
damaged.
Seek for services
E024 Reserved
E025
expansion
card
communica
tion failure
Abnormal communication
between extension card with
drive
Restart drive
Check the pin between
extension card with drive
E026
Buffer
circuit
anomaly
Power grid voltage is too low.
Check power grid voltage
Thruster is damaged
Change the major loop
contactor, and seek for
services.
Power on buffer resistance is
damaged
Change the buffer resistance,
and seek for services.
The control loop is damaged
Seek for services
Input phase loss
Check input R, S and T
wiring.
5.2 Operation Abnormalities and Countermeasures
The following abnormalities may occur during the usage, refer to Table 5-2
countermeasures to deal with:
Table 5-2 Operation Abnormalities and Countermeasures
Phenomena
Occurrence
Conditions
Possible Reasons
Countermeasures
Operation
panel does
not respond
Individual
keys or all
keys do not
respond.
Operation panel locking
function validates.
Power on of the drive
after complete power
off.
Cable contact of the operation
panel is unsound.
Check the connecting
cable.
Operation panel keys are
damaged.
Change the operation
panel or seek for
services.
function
code cannot
be modified
Unable to be
modified
under running
state.
This function code cannot be
modified under running state.
Modify under
shutdown state.
