PSEN cs4.2a
Operating Manual PSEN cs4.2a
1003575-EN-08
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Block diagram
A1 A2
S11 S21
12 22
Y32
Y1
SDD Input
SDD Output
Power
Input
Receiver
Actuator
Safety Device Diagnostics
Safety Device Diagnostics is an option that can be selected independently of the safety-re-
lated wiring.
When using the Safety Device Diagnostics, up to 16 sensors connected in series can be
connected as a subscriber to a fieldbus module.
The communication of the sensors with the fieldbus module is automatically built up again
with each new supply of the supply voltage. As a result, a sensor can be exchanged, e.g.
when servicing, without the need for special measures.
An exchange can be detected via the fieldbus module e.g. through the serial number.
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With Safety Device Diagnostics there are the following diagnostic options for the fieldbus
module:
– Poll information of the sensors (examples: what sensor in the series has switched, at
what point could there be an open circuit in the series connection)
– Read configuration parameters of the sensor (examples: Number of teach-in pro-
cesses remaining, serial number of the sensor)
– Perform actions (example: poll updated actuator name)
The results of the sensor diagnostics can be checked already during the installation phase
via the display in the fieldbus module, without the need to connect the fieldbus module to
the network.
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With Safety Device Diagnostics there are the following diagnostic options for the fieldbus
module for simple wiring:
– Information is passed on via the fieldbus module directly to the network
– Mappings of the signal outputs to the sensor are automated by the SDD.
