Dc Distribution Network According To Iec 61326-3-1 - Bosch Rexroth IndraControl S20 Manual
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Bosch Rexroth AG
Local bus integration
4.3
DC distribution network according to IEC 61326-3-1
IndraControl S20 Module With Safe Digital Outputs S20-PSDO-8/3
The maximum current carrying capacity for the main circuit U
NOTICE
Parallel protection against polarity reversal is only implemented in the device for a
limited period. The following measures must be taken to prevent damage to the
module:
•
Due to the maximum current carrying capacity of 8 A, protect supply voltage
U
externally with an 8 AT fuse.
O
•
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.
Supply voltage U
should feature a connection to functional earth ground accord-
O
ing to EN 60204-1.
24 V DC
(PEL V)
+
230 V
-
24 V
Fig. 4-1
Supply voltage U
EN 60204-1
Observe the information regarding the behavior of the module in the event of an
error at supply voltage U
O
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*PSDO*8*-AP02-EN-P
Module damage
U for supply at a bus coupler
or a
external fuse
U for supply at the
GND for supply at a bus coupler
or a
with connection to functional earth ground according to
O
: see
"Supply voltage errors" on page
Damage to module electronics
is 8 A.
O
BK
feed-in
terminal
S20
module
O
feed-in
terminal
105739B000_en
50.
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