Abbreviation

In full

Standard

ESPE

Electro-Sensitive Protective Equipment

IEC 61496-1

EDM

External Device Monitoring

Safety-related function block for monitoring the initial state and the switching behavior of contactors connected to the Safety Logic Controller (external contactor monitoring).

-/-

Cat.

Category

Basis for determining the performance level (» PL) of a safety-related controller.

EN ISO 13849-1

OSSD

Output Signal Switching Device

Part of the ESPE, which can be connected to the machine control system and switched off via a request for the safety-related function.

-/-

PL

Performance Level

Value for the average probability of dangerous failure of safety-related machine control systems. The category (Cat.) and the probability-related proper­ties of the components used form the basis for determining the PL.

The target PL results in binding, safety-related design principles, which aim to minimize the risk of a malfunction.

EN ISO 13849-1

SIL

Safety Integrity Level

Value for assessing electrical/elec­tronic/programmable electronic systems in terms of the reliability of their safety-related functions.

The target SIL results in binding, safety-related design principles, which aim to minimize the risk of a malfunction.

IEC 61508

SILCL

SIL Claim Limit, maximum SIL value for a subsystem.

EN 62061