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Function description
4.5.6
Activation of safety function STO on a servo amplifier
The module provides all the necessary functions to implement the safety function STO on a
servo amplifier.
Features:
}
The FS outputs O01 and O02 are used to activate the safety function STO on a servo
amplifier.
}
The configurable STO delay time must be deactivated in PAS4000 by entering a value
of 0 ms.
}
The "Display monitoring result at the outputs" option must be activated in PAS4000. In
this case, the result of the monitoring functions affects the outputs on the module dir-
ectly if a limit value is violated.
}
At least one monitoring function must be activated for the FS outputs. The monitoring
functions are activated by setting the O-data type "...DeactivateSS1M" to FALSE.
4.6
Position counter value
The position counter value is transferred to the head module via the FS module bus and is
available in the user program. This function is not available on sensors on which a position
cannot be determined (Ini pnp-pnp, pnp-npn, npn-pnp,npn-npn). The valid bit of the position
counter value must always be evaluated together with the position counter value.
Reason: In the event of an error or open circuit on the sensor, the valid bit for the position
counter value becomes 0, so identifying an invalid position counter value. While the error is
present, the position counter value is set to 0.
Please note that movements cannot be recorded during an external error/open circuit. As
soon as the valid bit for the position counter value becomes 0, all the reference positions in
the user program that have been formed from the position counter value become invalid
and must be recalculated when the valid bit returns to 1.
4.7
Integrated protection mechanisms
When the PSSu E F PS1(-T) or PSSu E F PS2(-T)(-R) is used to supply the system, the
module supply is buffered for 20 ms if the supply voltage is interrupted.
The module provides the following diagnostic data:
}
Start-up error
}
Configuration error
}
FS communication error
}
Bus termination error
}
Temperature error: too warm
}
Sensor error
}
Output error
The module has the following protection mechanisms:
}
Common second shutdown route, tested regularly
}
Cyclical output tests
Operating Manual PSSu K F EI CV(-T)
1004290-EN-04
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