Profile Control / Digital Inputs; Figure 14: External Profile Control - Tescom ER3000 User Manual

Electronic pressure controller

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4.5.4 Profile Control / Digital Inputs

This feature is only available on models that have the extra analog inputs, as

referenced in section 3 (ER3000 Model Descriptions).

Figure

shows a simple wiring method of controlling a profile, without the

need for a computer. Once the profile is downloaded into the ER3000, it can be

started or stopped with a toggle switch. The Digital Input pushbutton may be

used if the "Digital Input" function has been used within the profile. This allows

an operator the flexibility to wait until an event has occurred like changing to the

next device.

An additional feature, necessary for some demanding applications, is provided

for by the Profile Start/Stop and Digital Input signals, which are the Extra

Analog Input 1 and Extra Analog Input 2 inputs of the ER3000. This feature is

the ability to adjust the toggle level (or trip point) of the analog input where it

switches between a logical 0 and a logical 1. The ER3000 toggle variables

enable this feature and are described in section 9.5, Analog Input Variables. For

example, this feature allows connecting a pressure transducer to the Digital Input

and waiting for a specific pressure before continuing on in the pressure profile.

NOTE: Wire power as shown in figures 2 & 3

(J5 jumpers 3 and 4 must be removed, refer to

)

Figure 1

4. Installation 23

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