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Bosch Rexroth AG
Local bus integration
4.3
DC distribution network according to IEC 61326-3-1
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IndraControl S20 Module With Safe Digital Inputs S20-PSDI-8/4
The maximum current carrying capacity via the U
NOTICE
Parallel protection against polarity reversal is only implemented in the module for
a limited period. The following measures must be taken to prevent damage to the
module:
•
Due to the maximum current capacity of 8 A, protect power supply U
ly with an 8 AT fuse.
•
Only use PELV power supply units with at least four times the nominal tripping
current, as this is the only way to ensure release times of less than 300 ms.
The supply of supply voltage U
ground according to EN 60204-1.
24 V DC
(PEL V)
+
230 V
-
24 V
Abb. 4-1
Supply U
with connection to functional earth ground according to
I
EN 60204-1
Observe the information regarding the behavior of the module in the event of an
error at supply voltage U
: see
I
NOTICE
A surge voltage will damage the module electronics.
•
Do not use a DC distribution network.
A DC distribution network is a DC power supply network which supplies a com-
plete industrial hall with DC voltage and to which any device is connected. A typical
system or machine distribution is not a DC distribution network. For devices that
are provided for a typical system or machine distribution, the DC connections are
viewed and tested as I/O signals according to IEC 61326-3-1.
DOK-CONTRL-S20*PSDI*8*-AP02-EN-P
connector is 8 A.
I
Module damage
should feature a connection to functional earth
I
U for supply at a bus coupler
BK
or a
external fuse
U for supply at the
I
GND for supply at a bus coupler
or a
"Supply voltage errors" on page
Damage to module electronics
external-
I
feed-in
terminal
S20
module
feed-in
terminal
105738B000_en
72.
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