Pilz PNOZ ml2p safe link PDP - Manual (Page 15)

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Telephone: +49 711 3409-0, Telefax: +49 711 3409-133, E-Mail: [email protected]
4-1
4.1 Device properties
4 Function description
4 4000 Function description Function description 4- 4.1 Device properties 4100 Device properties 4- 4.1.1 Integrated protection mechanisms
Integrated protection mechanisms 4- Sicherheitseigenschaften_multi_allgemein
The relay conforms to the following safety criteria:
` The circuit is redundant with built-in self-monitoring.
` The safety function remains effective in the case of a component fail-
ure.
4.1.2 Function description
Function description 4-
4.1.2.1 Operation
Operation 4- Funktionsbeschreibung PNOZ ml2p
The link module PNOZ ml2p is used to safely transfer the input informa-
tion from decentralised modules to the safety system PNOZmulti.
Funktionen_multi_Basis
The function of the safety system's inputs and outputs depends on the
safety circuit created using the PNOZmulti Configurator. A chip card 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 cir-
cuits on the base unit and expansion modules and switch the outputs on
the base unit and expansion modules accordingly.
The LEDs on the base unit and expansion modules indicate the status
of the PNOZmulti safety system.
The online help on the PNOZmulti Configurator contains descriptions of
the operating modes and all the functions of the PNOZmulti safety sys-
tem, plus connection examples.
Funktionsbeschreibung PNOZ ml2p_2
Data exchange:
` Communication with the decentralised modules is via a safe data link.
` The link module PNOZ ml2p reads the input information from the de-
centralised modules as part of each cycle and then forwards it to the
base unit.
` At the end of a PNOZmulti cycle, the base unit sends its output data
to its link module. This output data is immediately sent to the decen-
tralised modules.