Danfoss Vacon OPTEA Operating Manual page 17

VACON® NXP Advanced Safety Options
Operating Guide
Abbreviation Definition
Parameter file A configuration file that contains the parameters for an Advanced safety option board.
Unverified parame- A parameter file that contains parameters that have not been verified by an Advanced safety option
ter file board.
Verified parameter A parameter file that contains parameters that have been verified and can be used in an Advanced safety
file option board.
Validated parameter A verified parameter file that contains parameters that have been tested and approved in the system.
file
PFH Probability of failure per hour. Valid for systems that operate in a high demand mode or continuous
mode.
PFH Probability of dangerous failure per hour.
d
PFD 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.
PL Performance Level
PLC Programmable Logic Controller
PMSM A permanent magnet synchronous motor
PROFIBUS Standardized fieldbus protocol for RS-485 communication.
PROFIdrive A specification for implementing AC drive related behavior over PROFIBUS/ PROFINET.
PROFINET Standardized fieldbus protocol for Ethernet communication.
PROFIsafe A safe fieldbus layer that operates over PROFIBUS/PROFINET.
Reached 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).
Resettable fault An error in that can be reset with a reset signal.
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.
SFF Safe Failure Fraction
Safe monitoring A safety function that monitors a specific value, usually speed.
function
Safe stopping func- A safety function intended to stop the motor.
tion
Safe range A range where the monitored value can be. Exceeding the limits of a safe range will cause a violation of
the safety function.
Safe state 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.
Service 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.
SFRT Safety Function Response Time
SRP/CS Safety-Related Part of a Control System
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Introduction
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