Alarms, faults and system messages
8.1 Operating states indicated on LED
Converter with the control units CU240D-2
Operating Instructions, 04/2018, FW V4.9 SP10, A5E34262100B AF
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Table 8- 2
Basic states
RDY Explanation
Temporary state after the supply voltage is switched on.
The inverter is free of faults
Commissioning or reset to factory settings
A fault is active
Firmware update is active
Inverter waits until the power supply is switched off and switched on again after a firmware
update
Table 8- 3
Digital input and digital output
DI/DO Explanation
The associated digital input or digital output has the "high" state.
The associated digital input or digital output has the "low" state.
Table 8- 4
Integrated safety functions
SAFE Explanation
One or more safety functions are enabled, but not active.
One or more safety functions are active and error-free.
The inverter has detected a safety function fault and initiated a stop response.