4.3 Errors and warnings
Errors
The status word displays via bit 3 (fault) when there is an error. The error type can
be determined via objects ru01 exception state and st01 error code:
4.3.1.1 Error display in ru01
The faults are coded according to the following table:
Overcurrent detection in the power unit has triggered
(e.g. short circuit, defective power module)
Exceeded overcurrent level on the control board
(e.g. Incorrect setting of the controller or the torque lim-
iting characteristic)
Overvoltage in DC link
(e.g. deceleration ramp too fast, braking resistor not
connected, braking transistor defective)
Module overload ( I
2
t ) => OL
(long-term mean current load is above 100%)
Reset of overload possible OL counter (ru29) < 50% of
the warning level
Module overload 2
(fast overload protection – defined by standstill continu-
ous current and short time current limit - has re-
sponded)
Overtemperature power components (heat sink)
Overtemperature power components decreased (tem-
perature 5° below OH level)
ERROR overheat internal PU
Overtemperature internal power unit
reset E. overheat intern PU
Overtemperature internal power unit decreased
electronic (software) motor protection has triggered
Error motor protection function can be reset
Temperature sensor in the motor (e.g. PTC or KTY)
has triggered
reset ERROR drive overheat
Overtemperature motor decreased
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