2 Engineering
2.8 Safe Torque Off (STO)
56 Rapid Link 5 · RAMO5 · RASP5 05/20 MN034004EN www.eaton.com
2.8.5 Direct enable
Figure 22: STO control signal terminals (direct enable)
The control section and the speed controller RASP5 remain blocked if no
control voltage (24 V DC) is connected to pin 3 and pin 4.
InHibit will be displayed. The STO LED stays off.
Pin Configuration
1 +24 V DC
2 0 V (reference potential)
3 STO- (0 V)
4 STO + (+24 V DC)
￫
Pin 2 (0 V) must always be connected to pin 3 (STO-) and pin 4
(STO+) must always be connected to pin 1 (+24 V).
WARNING
This function is not suitable for continuous operation!
WARNING
For applications without a safety function, devices without
STO function can be used.
4
3
1
2
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