Weidmuller UR20-4DI-4DO-PN-FSOE Manual page 55

Module status LED
Green: Communication on system bus
1DI-SIL
1.1 Yellow: Safety circuit 0 OK
4.2 Yellow: 24 V Safe output active
4.3 Green: Feed-in voltage in valid range
LED indicators UR20-PF-O-1DI-SIL, error messages see Chapter 7
System
bus
U
SYS
U
IN
Safety
24 V Safe
U
GND
OUT
Block diagram UR20-PF-O-1DI-SIL (see also sample design in chapter 4.1)
1484600000/04/06.2017
µC
DC
DC
u-remote IP20 modules for functional safety manual
5 Detailed descriptions of safe modules | Safe power-feed module UR20-PF-O-1DI-SIL
Starting up a safe power-feed module
Please proceed as follows to start-up a UR20-PF-O-1DI-SIL
module:
▶ Connect the provided safety device to S11 to S22 and
release the device (unlock).
▶ Connect the 24 V DC voltage supply to 4.3 and 4.4 of
the module.
▶ Switch on the u-remote station.
▶ Operate the manual start.
▶ Operate the manual start once more for each cascaded
UR20-PF-O-X-SIL-Modul.
µC
µC
S 11
S 12
1
S 21
S 22
Type 3
2
Man Start 1
Man Start 2
3
Autostart 1
Autostart 2
24 V Safe
4
24 V
GND
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