Siemens SIRIUS 3RK3 Equipment Manual page 88

Description of the hardware
5.1 Description of the individual modules
Internal circuit diagram
Figure 5-7
Terminal designations of the 3RK3 ASIsafe basic central unit
Terminal
T1
T2
F-IN1 ... F-IN2
IN3 ... IN8
Q1.1, Q1.2
Q2
AS-i+, AS-i-
L+
M
FE
Interfaces of the 3RK3 ASIsafe basic central unit
Interface
X1
X3
88
MSS 3RK3 ASIsafe basic internal circuit diagram
Meaning
Test output for input F‑IN1 •
Test output for input F‑IN2
Safety-related sensor in‐
puts
Standard inputs
Safety-related relay output Isolated two-channel output for connecting actuators
Safety-related semicon‐
ductor output
AS‑i terminals
Power supply
Ground
Functional ground
Meaning
Device interface
External memory module
Description
Test outputs with different test signals
• Connection for sensor contacts for detecting cross-
circuits
Terminal for safety sensors
Combinations for two-channel connection:
• F-IN1 with F-IN2
Connection for sensors (non-safety-related)
Two-channel output for connecting actuators
Connection of the AS-i cable
24 V DC
Ground to 24 V DC
Shielding, equipotential bonding
Description
Connection of PC or programming device, interface mod‐
ule, diagnostics display
Slot for external memory module with parameterization
data
The memory module is sealable with the 3RK3 central unit
or the control cabinet.
Equipment Manual, 07/2020, NEB926253002000/RS-AC/006
SIRIUS 3RK3 Modular Safety System