![PRECISION DIGITAL PD6200 Скачать руководство пользователя страница 60](http://html1.mh-extra.com/html/precision-digital/pd6200/pd6200_instruction-manual_1594044060.webp)
Model PD6200 Analog Input Rate/Totalizer
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:
•
Relay #4 turns the main pump on at 6000 gallons and turns it off
at 1000 gallons.
•
With the Pump Alternation feature activated, the next time the
level reaches 6000 gallons, relay #3 transfers and starts the
backup pump.