Siemens SIRIUS 3RK3 Equipment Manual page 122

Description of the hardware
5.1 Description of the individual modules
Internal circuit diagram
Figure 5-22
Terminal designations of the diagnostics display
Terminal
FE
Interfaces of the diagnostics display
Interface
X1
X2
Operator controls
Element
Keys
Displays
Element
DEVICE
BF
SF
Operating the diagnostics display
See Chapter "Diagnostics with diagnostics display (Page 328)".
122
Diagnostics display internal circuit diagram
Meaning
Functional ground
Meaning
Device interface
System interface
Meaning
Navigation in the operator control menu/error acknowledge‐
ment
Meaning
Status
Bus error
Group error
Explanation
Shielding, equipotential bonding
Explanation
Connection to the PC or programming device
Connection to the safety relay
SIRIUS 3RK3 Modular Safety System
Equipment Manual, 07/2020, NEB926253002000/RS-AC/006