Table of Contents
Advertisement
Function description
4.3.8
Safely Limited Increment - SLI
The safety function "Safely Limited Increment" (SLI) monitors the movement of the drive for
compliance with a defined increment.
Input and output assignment in the Configurator:
}
Inputs I0 ... I6
–
}
Outputs O0 ... O3
–
–
Prerequisites for normal operation:
}
Input "SS1 Activate" and "Reset": "1" Signal (+24 VDC)
}
"Ready" output: "1" Signal (+24 VDC). The safety card is ready for operation.
}
"STO Acknowledge" output: "0" Signal
}
Input "SLI Activate": "1" signal (+24 VDC)
The safety function is activated via
}
1/0 pulse edge at the input "SLI Activate".
Reaction:
}
SLI delay time starts
}
Once the SLI delay time has elapsed, the safe increment and the safely limited speed
are monitored. The current position of the motor is recorded and the motor is monitored
for compliance with the maximum increment.
}
Increment and speed within permitted limits:
Output "SRA Safe Range Acknowledge": "1" signal
}
If an increment or the speed is exceeded, the safety function SS1 (E-STOP braking
ramp) is activated.
Options
}
Check standstill
–
–
}
Automatic activation after standstill
–
–
–
Operating Manual PMCprotego S2-2(-C)
1002529-EN-04
SLI Activate
SRA Safe Range Acknowledge
SSA Safe Standstill Acknowledge
In the Configurator you can define whether the motor must be at standstill at the
time that SLI is activated or whether it may be in motion. A limit value may be spe-
cified for detecting standstill.
Safety function SS1 (E-STOP braking ramp) is activated if the limit value is ex-
ceeded.
Monitoring of the next increment starts automatically if the drive is below the limit
value for standstill.
Between two monitored increments, standstill can be monitored for a specified
standstill time. While this monitoring function is carried out, the output "SSA Safe
Standstill Acknowledge" = "1".
A tolerance window may be specified for standstill monitoring. If the value is ex-
ceeded, safety function SS1 (E-STOP braking ramp) is activated.
40
Advertisement
Table of Contents
