A configuration file that contains the parameters for an Advanced safety option board.
Unverified parame-
ter file
A parameter file that contains parameters that have not been verified by an Advanced safety option
board.
A parameter file that contains parameters that have been verified and can be used in an Advanced safety
option board.
A verified parameter file that contains parameters that have been tested and approved in the system.
Probability of failure per hour. Valid for systems that operate in a high demand mode or continuous
mode.
Probability of dangerous failure per hour.
Probability of failure on demand. The probability that the safety function does not work when requested.
Valid for systems that operate in a low demand mode.
Programmable Logic Controller
A permanent magnet synchronous motor
Standardized fieldbus protocol for RS-485 communication.
A specification for implementing AC drive related behavior over PROFIBUS/ PROFINET.
Standardized fieldbus protocol for Ethernet communication.
A safe fieldbus layer that operates over PROFIBUS/PROFINET.
A safety function that is reached has stopped the drive (safe stopping functions), or reached a safe area
for the measured value and monitoring for leaving the area has been activated (safe monitoring func-
tions).
An error in that can be reset with a reset signal.
A signal used to reset the current violations and faults in the drive and/or the Advanced safety option
board and to deactivate the STO function after a violation or fault.
A safety function that monitors a specific value, usually speed.
A safety function intended to stop the motor.
A range where the monitored value can be. Exceeding the limits of a safe range will cause a violation of
the safety function.
A state of a device or process that should be maintained to avoid dangerous incidents. For the AC drive
system, the safe state is defined as activated STO function.
A user level for accessing the Advanced safety option board functions. Identified via a password. In this
user level, it is not possible to verify a parameter file or change passwords.
Safety Function Response Time
Safety-Related Part of a Control System
AQ319736045637en-000101 / DPD01798 | 17Danfoss A/S © 2021.06
Introduction
VACON® NXP Advanced Safety Options
Operating Guide