Function description
Operating Manual PMCprotego S2-2(-C)
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The safety card monitors the following functions:
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Standstill position
–
The safety function monitors whether the standstill position remains within a con-
figured tolerance window.
–
Safety function SS1 (E-STOP braking ramp) is activated if the standstill position
leaves the tolerance window.
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Automatic SOS at standstill
A standstill threshold for activating the safety function SOS can be specified in the Con-
figurator.
Safety function SOS is activated when
–
standstill is achieved while the SOS delay time is running.
–
the SOS delay time has elapsed.
Input and output assignment in the Configurator:
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Inputs I0 ... I6
–
SOS Activate
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Outputs O0 … O3
–
SSA Safe Standstill Acknowledge
Prerequisites for normal operation:
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Input "SS1 Activate" and "Reset": "1" Signal (+24 VDC)
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"Ready" output: "1" Signal (+24 VDC). The safety card is ready for operation.
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"STO Acknowledge" output: “0” Signal
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Input "SOS Activate": "1" Signal (+24 VDC)
Safety function is activated
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By a 1/0 pulse edge at the input "SOS Activate".
Reaction:
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SOS delay time starts
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Once the SOS delay time has elapsed, safe standstill is monitored. The drive remains
in a controlled standstill.
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Output "SSA Safe Standstill Acknowledge": "1" signal
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Safety function SS1 (E-STOP braking ramp) shuts the drive down safely if the limit
value for the standstill position is exceeded. An error is registered.
