Electro-sensitive protective
de
vice
An electro-sensitive protective device is a device or system of
devices for safety-related detection of people or parts of the body.
It is used to protect people from machines and facilities that pose
a risk of injury. It triggers the machine or facility to adopt a safe
state before a person is exposed to a hazardous situation.
Examples: Safety light curtain, safety laser scanner.
ESD Electrostatic discharge
ESPE Electro-sensitive protective device
EtherNet/IP EtherNet/IP™ (EtherNet Industrial Protocol) is an Ethernet-based
ne
twork used in industrial automation.
EtherNet/IP™ implements the CIP™ (Common Industrial Protocol)
based on the Ethernet and TCP/IP protocol family.
EtherNet/IP™ with the CIP Safety™ protocol extension is also suit‐
able for safety-related data communication.
Field set A field set consists of one or more fields. The fields in a field set
ar
e monitored simultaneously.
A field set can contain different field types, e.g., a protective field
and a warning field.
Hazardous area Hazardous area is any space within and/or around machinery in
whic
h a person can be exposed to a hazard. (ISO 12100)
Light spot The light spot is the projection of the light beam on a plane per‐
pendic
ular to the light beam.
The light beam size depends on the distance between the light
source and the surface on which the light beam strikes.
Monitoring case A monitoring case indicates the machine status to the sensor.
G
enerally, one field set is assigned to each monitoring case.
The sensor receives a defined signal for the current machine
status. When a signal change occurs, the sensor activates the
monitoring case and thereby the field set that is associated with
the new machine status.
OFF state The OFF state is the status of the outputs of the protective device,
wher
e the controlled machine is triggered to quit its dangerous
state and the start-up of the machine is prevented (e.g., the volt‐
age at the OSSDs is LOW, so that the machine is switched off and
remains still).
ON state The ON state is the status of the outputs of the ESPE, where the
controlled machine is permitted to operate (e.g., the voltage at the
OSSDs is HIGH so that the machine can run).
OSSD Output signal switching device: signal output for the protective
de
vice, which is used for stopping the dangerous movement.
An OSSD is a safety switching output. The functionality of each
OSSD is tested periodically. OSSDs are always connected in pairs
and must undergo dual-channel analysis for safety reasons. An
OSSD pair is formed from 2 OSSDs that are connected and ana‐
lyzed together.
PFH
D
Probability of dangerous failure per hour
PL Performance level (ISO 13849)
PROFINET PROFINET (Process Field Protocol) is an Ethernet-based network
used in indus
trial automation.
With PROFIsafe , PROFINET is also suitable for safety-oriented
data communication.
17 GLOSSARY
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O P E R A T I N G I N S T R U C T I O N S | microScan3 – EtherNet/IP™ 8020200/1NTM/2024-06-03 | SICK
Subject to change without notice
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