Balluff BNI IOF-329-P02-Z038 Betriebsanleitung Seite 231

BNI IOF-329-P02-Z038
Safe I/O Module, Safety over IO-Link
IP67 Module
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Glossary
Term Definition
(safe) multi-function
For connecting switches/sensors which in addition to safe signals also contain additional
port F-DI, DI, DO functions (e.g. driving an interlocking solenoid, status signals, ...).
OSSD (Output signal
The part of an ESPE which is connected to the machine control system and moves to the OFF
switching device)
condition if the sensor section is actuated during normal operation. In the safe state (OFF) both
signals are LOW, otherwise they are pulsed to a HIGH level. (see also ZVEI position paper CB24I)
PELV (Protective Extra
Extra low voltage with safe disconnection
Low Voltage)
Performance Level Discrete level which specifies the capability of safety-relevant parts of a controller for performing
[PL]
a safety function under predictable conditions.
PROFIsafe Defines how safety devices (E-STOP switches, light grids, ...) communicate safety with each
other over PROFINET so that they can be used in safety automation tasks up to SIL 3. It
implements safe communication using a profile, i.e. a special format of the user data and a
special protocol.
Response time (for Time between an action and response, e.g. safe I/O module: time between detection of a (state)
devices) change on the input port and provision of this information on the communication interface
(IO-Link). Time between detection of new information on the communication interface (IO-Link)
and its implementation on the output port.
Risk time Maximum time during which the outputs of a safety sensor can deviate from the defined
response.
Degree of protection Describes the protection of equipment against foreign bodies (dirt) and against water, indicated
(IEC 60529) by two digits behind the abbreviation IP (International Protection). The first digit (0...6) describes
protection against ingress of foreign bodies, and the second digit (0...9) protection against
ingress of water.
SFF (Safe Failure Fraction of the overall failure rate of a subsystem that does not result in a dangerous failure.
Fraction)
Safe (destination) Unique address for safe devices within a PROFIsafe system
address F_DEST
ADDRESS
Safety function Function of a machine or device whose failure can result in direct increased risk.
Safety chain A combination of safety components in a controller (SRP/CS) consisting of
– Input element (e.g. sensor)
– Logic unit/signal processing (e.g. safety controller)
– Output element/turn-off (e.g. valve)
SIL (IEC 61508) SIL claim limit (of a sub-system)
Safety Integrity Level: a relative level of risk-reduction provided by a safety function, or to specify
a target level of risk reduction, whereby the requirements for a given SIL are not consistent
SIL CL (IEC 62061)
among all of the functional safety standards; in the European functional safety standards based
on the IEC 61508 standard four SILs are defined, with SIL 4 the most dependable and SIL 1 the
least.
SIMATIC SIMATIC is a product name of the Siemens corporation. It is used for products in automation
technology, control technology and the manufacturing execution level.
Test pulse duration t The test pulse duration t
i
end of the test pulse (e.g. rising edge).
Test pulse interval T The test pulse interval is the time between the beginning of a test pulse and the beginning of the
next test pulse on the same output.
TIA (Totally Integrated
Software framework for programming PLCs in the SIMATIC S7 family of Siemens AG.
Automation)
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is the time from the beginning of the test pulse (e.g. falling edge) to the
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