IFM Electronic Ecomat Mobile Series System Manual page 285

Glossary of Terms
First fault occurrence time
Time until the first failure of a safety element.
The operating system verifies the controller by
means of the internal monitoring and test
routines within a period of max. 30 s.
This "test cycle time" must be smaller than the
statistical first fault occurrence time for the
application.
Functional safety
Part of the overall safety referred to the →EUC
and the EUC control system which depends on
the correct functioning of the electric or
electronic safety-related system, safety-related
systems of other technologies and external
devices for risk reduction.
H
Harm
Physical injury or damage to health.
Hazard
Hazard is the potential source of harm.
A distinction is made between the source of
the hazard, e.g.:
- mechanical hazard,
- electrical hazard,
or the nature of the potential harm, e.g.:
- electric shock hazard,
- cutting hazard,
- toxic hazard.
The hazard envisaged in this definition is either
permanently present during the intended use
of the machine, e.g.:
- motion of hazardous moving elements,
- electric arc during a welding phase,
- unhealthy posture,
- noise emission,
- high temperature,
or the hazard may appear unexpectedly, e.g.:
- explosion,
- crushing hazard as a consequence of an
unintended/unexpected start-up,
- ejection as a consequence of a breakage,
- fall as a consequence of
acceleration/deceleration.
ifm System Manual ecomatmobile SmartController (CR2500) V05
Heartbeat
The participants regularly send short signals.
In this way the other participants can verify if a
participant has failed. No master is necessary.
I
ID
ID = Identifier
Name to differentiate the devices / participants
connected to a system or the message
packets transmitted between the participants.
Instructions
Superordinate word for one of the following
terms:
installation instructions, data sheet, user
information, operating instructions, device
manual installation information, online help,
system manual, programming manual, etc.
Intended use
Use of a product in accordance with the
information provided in the instructions for use.
IP address
IP = Internet Protocol
The IP address is a number which is
necessary to clearly identify an internet
participant. For the sake of clarity the number
is written in 4 decimal values, e.g.
127.215.205.156.
L
LED
LED = Light Emitting Diode
Light emitting diode, also called luminescent
diode, an electronic element of high coloured
luminosity at small volume with negligible
power loss.
Life, mean
Mean Time To Failure (MTTF) or: mean life.
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