REDUNDANCY FOR 2 PROTEGRAS

This fully automated redundancy circuit manages the operation of two Protegra CS RO systems in parallel connectivity with a downstream tank and two pressure booster pumps for the distribution of product water.

By measuring the tank level, the two water treatment systems are operated alternately. When reaching a minimum or maximum pressure level - or in the event of a system malfunctioning - the second system is switched on or off. Pressure sensors are controlling the two pressure booster pumps.
The preset pressure levels of 1 bar minimum and 6 bar maximum can be adjusted.
Should the tank level reach a minimum, the booster pumps are switched off (dry-running protection).

The redundancy circuit features the following for two water treatment and two pressure booster systems:
- Alternating operation / changeover
- Malfunction changeover in case of failure of one system
- Peak load activation in case of high quantity withdrawals
- A total of 5 potential-free alarm outputs (1 collective
fault signal, 2 critical fault signals for system A/B,
2 non-critical fault messages for system A/B) for the
connection to a building management system (BMS).
- 2 start/stop signals for the water treatment systems
- 2 motor protection switches connected to the
Pressure boosting pumps.

Connections:
- 2 outputs for start / stop water treatment systems
- 2 outputs booster pumps (2x 2,2 KW maximum load)
- 1 connection level sensor 4-20 mA for tank level
- 1 connection pressure sensor 4-20 mA for pipeline pressure
- Optional: Possibility to connect a conductivity measurement
device and temperature measurement

E-connection: 3x 400 V, 50 Hz N/PE, fuse 3x C16A

Dimensions: W 300 x H 800 x D 155

Technical Specifications:

Mains voltage: 3x400V
Voltage Pumps: 1x230V
Pump type: regulated/ unregulated
Analog outputs possible: 2
Start signal via level sensor: yes
Start signal via ext. signal: no
Analog outputs available: 0
Collective fault output x18: available
EA Boards: 1
Hardness error message X17: not available
Motor protection circuit: 2,5-4A
System A RO Status X16: to extern: yes
System B RO Status X17: to extern: yes
System A Malfunction: to extern: no
System B Malfunction: to extern: no
Pump A Malfunction: to extern: no
Pump B Malfunction: to extern: no
Flow rate measurement Loop: available
Temp.measurement Loop: available
Conductivity measure. Loop: available
Dual RO: available
Discard tank/ Loop: available
Measurement Feed water: available