Function description
Operating Manual PNOZ m EF 4DI4DOR
1002702-EN-08
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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.
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The safety device remains effective in the case of a component failure.
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The relay contacts meet the requirements for protective separation through increased in-
sulation compared with all other circuits in the safety system.
4.2
Functions
The expansion module provides additional inputs and additional relay 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
Module
Supply
Data
(FS)
In
te
rfa
c
e
to
p
re
v
io
u
s
m
o
d
u
le
In
te
rfa
c
e
to
n
e
x
t
m
o
d
u
le
I0
In
p
u
t
I1
In
p
u
t
I2
In
p
u
t
I3
In
p
u
t
O0
O1
13
23
14
24
O2
O3
33
43
34
44
