Viatran DL Series Analog Input Process Meter Instruction Manual
60
Application #2: Pump Alternation Using Relays 3 & 4
1. Relays 1 and 2 are set up for low and high alarm indication.
2. Relays 3 and 4 are set up for pump alternation.
Set and Reset Point Programming
Relay
Set Point
Reset Point
Function
1
495
750
Controls low alarm
2
7500
6900
Controls high alarm
3
7000
900
Controls backup pump
4 6000 1000 Controls
main
pump
The following graphics provide a visual representation of a typical pump
alternation application with high and low alarm monitoring:
1. Relay #4 turns the main pump on at 6000 gallons and turns it off at
1000 gallons.
2. With the Pump Alternation feature activated, the next time the level
reaches 6000 gallons, relay #3 transfers and starts the backup
pump.
Содержание DL-ACB0N
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