WAGO-I/O-SYSTEM 750
Glossary 159
753-668/000-004 4FAI 0/4-20 mA Diff PROFIsafe
Manual
Version 1.0.0, valid from HW/SW Version 01/01
Proof Test Interval
The proof test interval is the time until testing the safety function / safety device is
required.
Protected Installation
The goal of the protected installation of lines is, for example, operational reliability
and protection against line breaks or interference with different signals in a cable
or equipment. Among other means, this is achieved by the necessary insulation
between two lines with different potentials.
PVi
Process Values Input
PVo
Process Values Output
R
Requirement
Event that causes the F I/O module to execute its safety function.
Response Time
The response time is the length of time from the occurrence of an event, e.g.
change of an input current, up to the expected response, e.g., change of process
values (see also “Safety Response Time” and “Error Response Time”).
RIOforFA
Remote IO for Factory Automation Common Profile Specification for PROFINET
and PROFIBUS Version 1.10
RIOforPA
PROFIBUS Profile Remote IO for Process Automation (RIO for PA) Version 1.0
Risk Reduction
The required risk reduction is the result of a risk assessment that is used to take
measures to lower the risk of a security system to an acceptable residual risk.
