Function Description; Integrated Protection Mechanisms; Functions; System Reaction Time - Pilz PNOZ m EF 8DI4DO Operating Manual

Function description

4 Function description
4.1

Integrated protection mechanisms

The relay meets the following safety requirements:
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The circuit is redundant with built-in self-monitoring.
} The safety device remains effective in the case of a component failure.
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The safety outputs are tested periodically using a disconnection test.
4.2

Functions

The expansion module provides additional inputs and additional semiconductor outputs.
The function of the inputs and outputs on the control system depends on the safety circuit
created using the PNOZmulti Configurator. A removable data medium is used to download
the safety circuit to the base unit. The base unit has 2 microcontrollers that monitor each
other. They evaluate the input circuits on the base unit and expansion modules and switch
the outputs on the base unit and expansion modules accordingly.
The online help on the PNOZmulti Configurator contains descriptions of the operating
modes and all the functions of the PNOZmulti control system, plus connection examples.
4.3

System reaction time

Calculation of the maximum reaction time between an input switching off and a linked out-
put in the system switching off is described in the document "PNOZmulti System Expan-
sion".
4.4

Block diagram

Operating Manual PNOZ m EF 8DI4DO
1002661-EN-05
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