A parallel reverse polarity protection is imple‐
mented in the module. This protection is only
temporally limited.
CAUTION
To avoid a module defect, proceed as follows:
●
Due to the maximum current carrying capacity of 8 A, protect the volt‐
age supply U
O
externally with a fuse of 8 A (slow).
●
Only use PELV power supply units with at least 4 times the nominal cur‐
rent required for triggering. Thus, triggering times of less than 300 ms
can be ensured.
The supply voltage U
O
has to be connected to the functional earth acc. to EN
60204-1.
24 V DC
(PELV)
+
-
230 V
24 V
I
U for feeding at the IndraControl S20 module
GND of the feeding at the bus coupler
or an infeed terminal
External fuse
BK
U for feeding at the bus coupler
or an infeed terminal
Fig. 4-1:
Feeding U
O
with connection to the functional earth acc. to EN 60204-1
Observe the information on the module behavior when an error occurs at the
supply voltage U
O
, refer to
chapter 9.2.3 "Errors of the supply voltage" on
.
4.4
DC distribution network acc. to IEC 61326-3-1
Module electronics destroyed due to overvolt‐
age!
NOTICE
Do no use a "DC distribution network".
A DC distribution network is a DC distribution net supplying a complete indus‐
trial warehouse with direct voltage. Any devices can be connected to it. A typ‐
ical system or machine distribution is no DC distribution network. For devices
intended for a typical system or machine distribution, the DC connections are
considered and checked as I/O signals acc. to IEC 61326-3-1.
Bosch Rexroth AG
DOK-CONTRL-S20*SSDO*8*-AP02-EN-P
22/85
IndraControl S20 Module With Safe Digital Outputs S20-SSDO-8/3
Integrating the local bus
