Pilz PNOZ m1p base unit - Manual (Page 12)

Function description
Operating Manual PNOZ m1p (ETH)
20878-EN-12
12
Function description
Integrated protection mechanisms
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.
} The relay contacts meet the requirements for safe separation through increased insula-
tion compared with all other circuits in the safety system.
} The safety outputs are tested periodically using a disconnection test.
Functions
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 cir-
cuit 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 control system, plus connection examples.
Block diagram
Interface fieldbus
,
expansion module
Interface chip card
Ethernet
/
RS 232
Interface
expansion module
O4 O5
A1 A2 I0 I14 I6 I11 I9 I10 I13 I8 I7 I16 I12 I18 I15 I2 I4 I5 I1 I3 I17 I19
Input
Power
Cascading
Test pulse
output
24 V 0 V
24 V 0 V
13 23
CI+ CI- CO+ CO- T0 T1 T2 T3 O0 O1 O2 O3 OA0 14 24
4
4.1
4.2
4.3