Array electronic SR Series

To Next Page

To Previous Page

Controladores lógicos programables PLC baja gama expandibles entradas digitales AC 74368-SR22MRDC ARRAY Manual Ingles www.viaindustrial.com

Notes: In one LCD interface, only one special character can be added.

4.2 Application Examples of HMI

Note

This is a water supply system.

1£® The water supply system diagram is as follows:

Fig. 4.9

2. Description

a. We use a SR-12MRD to compare the Pressure 1 and 7V, if P1<7v, then

start the pump #1; if P1<3v, then start the pump #2; if P1<1v for more than 5

minutes, then start the voice alarm. Connect P1 to I0(I0¡XI7) are analog input)

b. SA is a Manual/Auto switch£¬connected to I4 and I5.

c. When you choose SA as manual operation, there are two function keys in

the program, V: AF1 will control the pump #1, and V: AF2 will control

pump #2.

d. When you choose SA as Auto operation, the pressure comparing

instructions B0, B1 and B6 will work; the parameters of B0, B1 and B6 are

as follows:

Array electronic SR Series - Page 59