Control cabinet

The control cabinet includes the following components

• Main control unit (Raspberry Pi)
• Relay actuation unit
• Power supply 12V
• Fuses
• Circuit breaker
• Main switch
• Relays for overvoltage protection
• Sockets for power output to pumps and skimmer

Requirements

1. The control cabinet shall have the possibility to cut off the connection to the power supply (all wires).
2. The control cabinet shall limit the current drawn from the 230V AC power supply.
3. The control cabinet shall limit the current drawn by each actuator (all pumps, skimmer, feeder, heater, ventilation fans).
4. The control cabinet shall provide switches accessible without opening the cabinet allowing to switch off the following devices:
   • Protein skimmer
   • Main pump #1
   • Main pump #2
   • Auxiliary pump #1
   • Auxiliary pump #2
   • Heater
   • Feeder
5. The control cabinet shall provide power sockets for the following devices:
   • Protein skimmer
   • Main pump #1
   • Main pump #2
   • Auxiliary pump #1
   • Auxiliary pump #2
   • Heater
6. The control cabinet shall provide signal indicator lamps for the following devices:
   • Protein skimmer
   • Main pump #1
   • Main pump #2
   • Auxiliary pump #1
   • Auxiliary pump #2
   • Heater
7. The control cabinet shall provide a pair of rail mount terminals for each 12V DC devices:
   • all Balling mineral dosing pumps
   • fresh-water refill pump
   • ventilation fan #1
   • ventilation fan #2
8. The control cabinet shall provide a pair of rail mount terminals for the tank level switch.
9. The control cabinet shall provide a pair of rail mount terminals for each of 230V devices that do not use a power socket:
   • feeder
10. The control cabinet shall provide 230V AC supply voltage to 12V power supply.
11. The control cabinet shall provide 12V DC supply voltage to the sensor processing board of the Raspberry Pi.
    • Note: The sensor processing board transforms the 12V DC to the 5V DC voltage required by the Raspberry Pi.
12. The control cabinet shall provide 12V DC supply voltage to the relay actuator (Controllino).
13. The control cabinet shall provide 12V DC voltage to the relay inputs of the Controllino.
14. The control cabinet shall provide 12V DC voltage from the relay outputs of the Controllino to the fuse of each actuator.
    • Note: The ventilation fans share one relay output but have distinct fuses.
15. The control cabinet shall provide 12V DC voltage from the fuse output of each actuator to the rail mount terminal of each actuator.
16. The control cabinet shall provide 230V AC supply voltage to the relay inputs of the relay actuator.
17. The control cabinet shall provide 230V AC voltage from the relay output of the relay actuator to the fuse of the heater.
18. The control cabinet shall provide 230V AC voltage from the fuse of the heater to the power socket of the heater.
19. The control cabinet shall provide 230V AC voltage from the relay output of the relay actuator to the fuse of the feeder.
20. The control cabinet shall provide 230V AC voltage from the fuse of the feeder to the rail mount terminal for the feeder.
21. The control cabinet shall provide transient overvoltage protection by means of an additional set of relays (overvoltage protection relay) for each 230V AC pumps:
    • Protein skimmer
    • Main pump #1
    • Main pump #2
    • Auxiliary pump #1
    • Auxiliary pump #2
22. The control cabinet shall provide 230V AC voltage from the relay output of the relay actuator for each of the following devices to control terminal of their respective overvoltage protection relay:
    • Protein skimmer
    • Main pump #1
    • Main pump #2
    • Auxiliary pump #1
    • Auxiliary pump #2
23. The control cabinet shall provide 230V AC voltage to the input of each of the overvoltage protection relays:
24. The control cabinet shall provide 230V AC voltage from the overvoltage protection to the respective fuse.
25. The control cabinet shall provide 230V AC voltage from the fuse of each of the following devices to their respective power socket:
    • Protein skimmer
    • Main pump #1
    • Main pump #2
    • Auxiliary pump #1
    • Auxiliary pump #2
26. The control cabinet shall connect one USB port of the Raspberry Pi with the USB port of the Controllino.
27. The control cabinet shall allow to route all cables (power supply, actuators, sensors) to outside of the cabinet - preferably at the bottom of the cabinet.