Sto Function Pick-Up Time; Sto Function Messages; Error Messages - Eaton Rapid Link 5 Manual

2.8.6 STO function pick-up time

2.8.7 STO function messages

2.8.8 Error Messages

The total pick-up time for the STO function is the time that elapses from the
moment a safety-relevant event occurs on the system's components (aggre-
gate) to the moment a safe state is reached (in this case: Stop category 0 as
defined in IEC 60204-1):
• The pick-up time from the moment the STO inputs become de-ener-
gized to the moment when the outputs in the power section (U, V, W)
are in a state in which no torque is produced in the motor (STO function
activated) is less than 1 ms.
• The pick-up time from the moment the STO inputs become de-energized
to the moment the STO monitoring status changes is less than 20 ms.
• The pick-up time from the moment a fault is detected in the STO circuit
to the moment Sto-F is signaled is less than 20 ms.
￫
The STO function is always activated and enabled in the RASP5
speed controller - regardless of the operating mode.
During normal operation (supply voltage present), there are various options
for monitoring the state of the STO inputs.
If the STO inputs are de-energized, the STO LED does not light up and
InHibt is displayed in the associated operating unit (Inhibit - German: Lock,
locked state).
If the RASP5 variable frequency drive detects a fault, the corresponding fault
code will be displayed (Sto-F) (not: Inhibt).
The following table lists the error messages relevant to the STO function as
well as potential causes and remedial measures.
Table 8: Error Messages
Keypad display LED display STO
Off
Inhibit
Green
StOP
-
Sto-F
Rapid Link 5 · RAMO5 · RASP5 05/20 MN034004EN www.eaton.com
2.8 Safe Torque Off (STO)
Meaning
there is no release
there is release
Internal STO fault
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