11.2.7
Supply voltage U
O
(actuators)
Nominal voltage
24 V DC acc. to EN 61131-2 and EN 60204
Ripple factor
3.6 V
SS
Valid voltage range
19.2 V DC to 30.2 V DC (incl. all tolerances and
ripple)
Current consumption
Typ. 25 mA (all outputs set, supplied by U
O
at
30.2 V DC, without actuator supply)
Valid interruption period
10 ms
The output voltage for the safe outputs disrupts
during this period, as the outputs are not internally
buffered.
Overvoltage protection
Yes (in the module)
Reverse voltage protection
Yes (in the module)
Undervoltage detection
Yes, at approx. 17 V
Diagnostic displays
Green LED U
O
nostic and status displays" on page 15
External protection
Max. 8 A, slow
Tab. 11-8:
Supply voltage U
O
(actuators)
Loss of the safety functions due to the use of
unsuitable voltage supplies.
WARNING
Use voltage supplies acc. to EN 50178/VDE 0160 (PELV).
The module is provided with a parallel re‐
verse polarity protection. This protection is
only temporally limited. To avoid a module
defect, proceed as follows:
DANGER
●
Due to the maximum current carrying capacity of 8 A, protect the volt‐
age supply U
I
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, as thus, only triggering times of less than
300 ms can be ensured.
11.2.8
Safe digital outputs
Number
4 dual-channel or 8 single-channel (pulse
switching)
Supply
From supply voltage U
O
Maximum output current per output
(channel)
2 A
1.5 A (acc. to CUL
US
)
Maximum output current of all outputs
(total current)
8 A
6 A (acc. to CUL
US
)
Maximum output current per group (total current)
Bosch Rexroth AG
DOK-CONTRL-S20*SSDO*8*-AP02-EN-P
58/85
IndraControl S20 Module With Safe Digital Outputs S20-SSDO-8/3
Technical data and ordering data
