Rockwell Automation 1746-NI8 SLC 500 Analog Input Modules User Manual - Manual (Page 69)

8–4 Application Examples
Publication 1746Ć6.8 - April 1997
Application Setup - Display Amps, PSI, and Liquid Level
This example shows how to display current, pressure, and liquid
level at one annunciator panel. The motor current draw is displayed
in amps. The tank pressure is displayed in psi. The liquid level in
the holding tank is displayed in inches.
A three-position selector switch allows the operator to choose
between displaying the current draw for L1, L2, or L3 of the
three-phase motor. Two warning pilot lights indicate a low or high
liquid level condition in the holding tank. Each display is a 3-digit,
7-segment display. The displays have DC-sinking inputs and use
BCD data format.
Device Configuration
Incoming Supply
Level
Sensor
Current
Transducers
Liquid
Pump
Three
Phase
Motor
L1 L2
i
L1
i i
Valve
SLC 5/04 1746ĆNI8 1746ĆOB16 1746ĆOB16 1746ĆOB16 1746ĆOB16 1746ĆIB8
SLC Chassis System
Holding Tank
Pressure
Transducer
Amps
High Level
Display Panel
L1
Selector Switch
L1 - I:6/0
L2 - I:6/1
L3 - I:6/2
Liquid Level PSI
Low Level
L3
L2
Supplementary Example