Chapter6 Troubleshooting
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①For mid-power/mini-watt ac drives(3022G/3030P and the below models), there aren’t
fault Uu2(Control circuit under voltage) and Uu3(Bad charge circuit).
②Only LCD keyboard has parameter-copying function, a standard LED keyboard
doesn’t has this function.
③S2R4GB～3004GB have no short-circuit protection/output grounding protection.
6.2 Warning display and explanation
After action of warning function, warning code is flickered display, but the ac drive is
not in fault-protecting state: PWM output will not be closed off, fault relay will not act.
In addition, the ac drive would automatically return to prevenient operation state
after the warning signal disappeared.
The following table lists different kinds of Warnings.
Table 6-2 Warning display and description
Warning
display
Display content Description
Uu
Under voltage
detection
Detected under voltage, the ac drive can continue
working after detected
OLP2
Warning of the ac
drive’s overload
beforehand
The ac drive working current exceeded overload
detection level and maintained a longer time than
the setting of overload detection time. The ac
drive would continue working after detected.
OH2
Temperature of the
radiator is high
Temperature of radiator is over OH2 detecting
benchmark, the ac drive would continue working
after detected.
AE1
Abnormity analog
signal 1
AI1 analog input beyond range: -0.2～+10.2V
AE2
Abnormity analog
signal 2
AI2 analog input beyond range: -0.2～+10.2V
SF1
Illogical function
code setting
Function of I/O terminals, SS0-2, TT0-1 haven’t
been set completely
SF2
Selected mode
differ from setting
of terminals
Setting operation mode isn’t complied with the
setting of terminalsX1～X8.（S2R4GB～
3004GB is X1～X5）
SF3
Output terminal
selection error
( Only for
35R5GB/37R5PB
and above models)
The ac drive has three open collector output, the
output terminals D0, Y1, Y2 are programmable
multi-function terminals. Users can select a part
of control signal and monitor signal according to
needs. When collector output is selected for
direction of programmed operating step or faults,
the content defined for function must be the
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