Introduction

How to set up DC Track Circuit Monitoring on SA380TX data logger.

Steps:

Setup analogue input channel: set channel name and input sensor
Setup data acquisition type

GUI

Setting up analogue input channel

First of all you have to set an appropriate name and input sensor for the analogue channel.

Go to analogue channel configuration:

You have to be authenticated to be able to change the logger configuration:

then press enter:

Press "Analogue" on Configuration dialog:

This gets you to the analogue channel selector dialog:

Where you have to select the analogue channel you will want to set up. E.g. select AN-A01:

As you can see you can specify the channel name and input sensor for a particular analogue channel.

Let's set the name first:

When finished, press Enter.

Let's set the sensor next:

This brings you to the sensor selector dialog:

Notice, that we have quite a few pre-defined sensors, it is likely to have one of these installed.

If your sensor is not listed, you can create a new sensor with "New" button. See Creating new input sensor.

Select the appropriate sensor and press the "OK" button to select it for the analogue channel.

If you are happy with the analogue channel settings, press Save:

The logger will notify you about the configuration changes:

Please bear in mind that the logger does not collect any data for the analogue channel at this point. To start data acquisition you have to set up a data acquisition method.

At this point the logger must be able to read the correct engineering unit samples on the analogue channel. To check it, get back to the Main dialog by pressing the exit "X" button on the dialogs.

Go to real-time analogue dialog:

Notice that the first analogue channel shows name=701WI and LEM PCM20 sensor as set in configuration.

The actual input value can be read on the graph. (Which is -5A now, since we don't have actual sensor connected to the analogue channel.)

Setting up analogue data acquisition

then enter password and enter:

The next selector dialog shows which analogue channels are collecting acquire-on-change measurements:

select 701 WI channel:

Brings you to the acquire-on-change configuration dialog:

Most importants settings are the ON/OFF and the "Push to server" toggle buttons.

For a typical configuration, set the acquire-on-change threshold to 1% (lower than the default 5%), then toggle push to server and ON/OFF, then save the changes:

Now the data collection method is set for the particular analogue channel. Let's see the collected data:

Go back to the main dialog by closing all the previous screens with the top-right "X" button.

Navigate to acquire-on-change historical data for analogue channel 701 WI:

Notice that setting the acquire-on-change configuration will make the logger to acquire a first sample as a base value without any actual input change.