AmeriWater CW330 Series, Руководство по эксплуатации и установке

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16) Terminal 20 & 21 – “Filter Lockout Output” is an output (dry contact) to first filter system
“Backwash Interlock Input” terminals 1 &17 to prevent system from backwashing at the
same time.
17) Terminal 2 & 24 – Wet Contact – 120V output when filter is in backwash. Deactivated
when filter is in service.
18) Terminal 1 & 18 – “Storage Tank Abort Input” - Dry contact input from backwash storage
tank. When activated aborts the backwash and returns the filter to service.
19) Terminals 22 & 23 – Dry Contact – Dry contact output when unit is in backwash.
20) Memory Module – Provides a read only status of the PLC
TERMINALS DESCRIBED IN ITEMS NUMBERED 14 THRU 19 WILL BE DIFFERENT.
TERMINAL NUMBERS ON MULTIPLE TANK SYSTEMS REFERENCE THE LADDER DIAGRAM.