maintenance/
troubleshooting
4
8
Synrad
Firestar i401
operator’s manual
Troubleshooting
Functional block diagram
Figure 4-2 is a functional block diagram illustrating the i401’s control architecture.
Figure 4-2
Firestar i401 functional block diagram
DB-15
USER I/O
+48 VDC
+48 VDC
RF Module 1
RF Module 2
RF Module 3
RF Module 4
i401 Control Board
Power Board 2
Power Board 1
Sensors
RJ45
Ethernet Interface
Shutter
Switched 48 VDC
Switched 48 VDC
PWM/Fault Detection
PWM/Fault Detection
Shutter Open Command/Fault Detection
Over/Under V
oltage Fault
Current Fault
Over/Under V
oltage Fault
Current Fault
Humidity/ Flow Sense