Pilz PMCtendo DD5 Operating Manual page 37

Function description
}
The servo amplifier is ready for operation when there is a 24 V signal at the input.
}
If the STO-ENABLE input is open, no more power is transferred to the motor. The drive
becomes torque-free and runs down.
}
In conjunction with the output from a safety relay or safety control system, you can
safely prevent the drive from restarting.
}
Requirements of the output on a safety control system or safety relay:
PL d (Cat. 2) of EN ISO 13849-1, SIL CL 2 of EN/IEC 62061
}
If the safety function STO is not needed, STO-ENABLE must be connected directly to
24 V.
}
This input is not compatible with IEC 61131-2.
} Volt-free, reference earth is XGND
4.3.2.3 Digital outputs
Operational readiness BTB/RTO (X3/1, 2)
Functions:
}
The servo amplifier is ready for operation when the relay contact BTB/RTO is closed.
}
Operational readiness is not dependent on the ENABLE signal, I²t limitation and braking
threshold.
}
If an error occurs, the relay contact opens. The output on the servo amplifier switches
off. The output is disabled and supplies no power.
}
A list of error messages is available in the chapter entitled "Messages/Errors", under
"Error messages".
Digital outputs DIGITAL-OUT 1 / 2 (X3/13, 14)
Functions:
}
Open Emitter, 24 VDC, max. 10 mA
} Volt-free
Setting:
}
The digital outputs can be used as signal outputs for pre-programmed functions, e.g.
"Speed below limit value".
}
A list of the pre-programmed functions is available in the "Digital I/O" window of the
commissioning software.
}
If a pre-programmed function has been newly assigned, the data record must be stored
in the servo amplifier's EEPROM and the device must be reset (e.g. using the commis-
sioning software PASmotion).
4.3.3 Safety function STO
The safety function STO on the servo amplifier can be triggered by an external safe control
system (semiconductor output or positive-guided relay contact).
4.3.3.1 Safety information
Please note the following safety guidelines:
}
Please note the intended use of the safety function STO (see Chapter entitled "Safety").
Operating Manual PMCtendo DD5
1002236-EN-04
37