Pilz PMCprimo DriveP.01/AA0/4/0/0/208-480VAC - Manual (Page 44)

Function description
Operating Manual PMCprotego S1­2(­C)
1002528­EN­02 44
4.3.9 Safely Limited Position ­ SLP
The safety function "Safely Limited Position" (SLP) monitors the drive's current absolute po­
sition to ensure it stays within a maximum and minimum permitted limit value.
INFORMATION
For the safety function SLP, an additional external absolute encoder must
be connected to interface X31 on the safety card. The current position of the
external encoder is verified using the absolute position of the motor en­
coder. The external encoder is configured in the safety card's Configurator.
CAUTION!
Risk from encoder signal overflow!
A signal overflow from the motor encoder or external encoder can lead to
hazardous situations.
The motor encoder and external encoder must not overflow during active
monitoring of the absolute position.
Appropriate measures should be used to ensure that the encoder signals
are adapted to the mechanical travel.
Input and output assignment in the Configurator:
} Inputs I0 ... I6
– SLP Activate
} Outputs O0 … O3
– SRA Safe Range Acknowledge
Prerequisites for normal operation:
} 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
} Input "SLP Activate": "1" signal (+24 VDC)
} To achieve SIL3 or PL e: Connect the output "STO SIL3" to servo amplifier terminal
X4A/ 3.
} External absolute encoder is connected and configured
The safety function is activated via
} 1/0 pulse edge at the input "SLP Activate".
Reaction:
} SLP delay time starts
} Once the SLP delay time has elapsed, the absolute position is monitored.
} Monitoring of safely limited speed:
Output "SRA Safe Range Acknowledge": "1" signal