Function description
Operating Manual PMCprotego S12(C)
1002528EN03
23
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Braking ramp in normal operation
The drive starts with the configured braking ramp when safety function SS1 has been
activated. Once the time has elapsed, STO is activated.
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ESTOP braking ramp:
The drive starts with the configured braking ramp when
– there is an internal error
– limit values are exceeded
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Safety function STO is activated when
– the actual braking period is longer than the configured STO delay time.
– the configured limit value for the position error is exceeded.
– another error occurs while SS1 is activated
– the STO delay time has elapsed
}
Automatic STO at standstill
A standstill threshold for activating the safety function STO can be specified in the Con
figurator.
Safety function STO is activated when
– standstill is achieved while the STO delay time is running.
– the STO delay time has elapsed.
Input and output assignment
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Input
– X30/1: SS1 Activate
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Outputs
– X30/5: STO Acknowledge
– X30/16: Ready
Prerequisites for normal operation:
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Input "SS1 Activate" and "SS1 SIL3/Reset": "1" Signal (+24 VDC)
}
"Ready" output: "1" Signal (+24 VDC). The safety card is ready for operation.
}
"STO Acknowledge" output: “0” Signal
}
To achieve SIL3 or PL e: Connect the output "STO SIL3" to servo amplifier terminal
X4A/ 3.
The safety function is activated via
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1/0 pulse edge at the input "SS1 Activate"
or
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1/0 pulse edge at the input "SS1 SIL3/Reset"
}
Internal error
Signal status of the inputs "SS1 Activate" and "SS1 SIL3/Reset"
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The STO delay time starts when one of the two inputs "SS1 Activate" or "SS1 SIL3/Re
set" is set to "0". The safety function "STO" is activated once the STO delay time has
elapsed.
}
The safety function "STO" is activated immediately if the second input is also set to "0".
}
The safety function "STO" is always activated when both the inputs "SS1 Activate" and
"SS1 SIL3/Reset" are set to "0".
