xionghua - Model DL-PS16 - disc-type filter controller
Input/output signal introduction Input signal: 4 signals(normal open dry contacts) Diff-pressure signal input Upper limit of outlet-water pressure Upper limit of outlet-water pressure (internal sources backwash only) Lower limit of outlet-water pressure (internal sources backwash only) Output signal: 18 signals (3A/24V) 16 signals control the wash solenoid valves: each signal control 4 solenoid valves 24VDC. 2 signals control the valves: single-phase electric valve or solenoid valve. At external sources back washing, the action of the output signal synchronizes with the action of the backwash valve. When the backwash valve is ON, the inlet valve is ON, and when the backwash valve is OFF, the inlet valve is OFF.