Pilz PNOZ mml2p - Manual (Page 15)

Pilz GmbH & Co. KG, Felix-Wankel-Straße 2, 73760 Ostfildern, Germany
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
failure.
4.1.2 Function description
Function description 4-
4.1.2.1 Operation
Operation 4- Funktionsbeschreibung PNOZ ml2p
The link module PNOZ mml2p is used to safely transfer the input
information from decentralised modules to the safety system
PNOZmulti.
Funktionen_multi_Basis
The function of the inputs and outputs on the control system 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 circuits 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 configurable control system PNOZmulti.
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.
Funktionsbeschreibung PNOZ ml2p_2
Data exchange:
 Communication with the decentralised modules is via a safe data link.
 The link module PNOZ mml2p reads the input information from the
decentralised 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
decentralised modules.