Setting Up The Dual-Relay Option Board; Setpoint Example - Omega DPF700 User Manual

10.2 SETTING UP THE DUAL-RELAY OPTION BOARD

You may enter a setpoint from -99999 to 999999 with a decimal point in any of the following
positions: 9.9.9.9.9.9. After applying the scale factor and offset, the displayed measurement is
compared to the setpoint values.
LO ALARM
Displayed value is less than Setpoint LO
HI ALARM
Displayed value is more than Setpoint HI
HYSTERESIS
Relay 2 is energized when display value is more than Setpoint HI. Relay 2 is not
energized when display value is less than Setpoint LO
Setpoint Example: Setpoint HI is 500.0 and Setpoint LO is 100.0. Reading changes from 0 to
600 and back to 0. Figure 10-2 on the following page illustrates Table 10-1.
Reading
0
99.9
300
500.0
500.1
600
500.1
100 - 500
99.9
0
D
UAL
Table 10-1. Setpoint Example
LO (Relay 1)
On
Off
Off
Off
Off
Off
Off
Off
On
On
-R O
ELAY PTION
Alarm Status
HI (Relay 2)
Off
Off
Off
Off
On
On
Off
Off
Off
Off
10
HYS
Off
Off
Off
Off
On
On
On
On
Off
Off
55