Functions
7.10 Safe Torque Off (STO) safety function
Inverter with CU240B-2 and CU240E-2 Control Units
230 Operating Instructions, 01/2011, FW 4.4, A5E02299792B AB
● Switch off the inverter supply voltage.
● Wait until all LEDs on the inverter go dark. Now switch on the inverter supply voltage
again. Your settings only become effective after this power-on reset.
7.10.7.6 Multiple assignment of the DI
● Check whether the digital inputs used as fail-safe input are also assigned a further
function.
NOTICE
Both, the assignment of digital inputs with the selection of a safety function or with a
"standard" function can lead to an unexpected behavior of the motor.
● Remove multiple assignments of the digital inputs:
Figure 7-31 Example: automatic assignment of digital inputs DI 4 and DI 5 with STO
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