This article will guide you through the process of connecting the 6ES7134-6JD00-0CA1 input modules, as well as the settings in the hardware configuration in TIA.
In many cases, for example on the die bolts, annealing heating zones etc. you will find thermocouplers on our lines.
Sometimes though, they can show non-plausible actual values, as seen in the picture below, if not set up correctly.
This problem can occur because of different reasons, for example a broken wire, broken thermocouplers, faulty connections etc. If everything is physically connected and no defects are found, the hardware settings should be checked.
1 Overview[edit | edit source]
The 6ES7134-6JD00-0CA1 input module offers different possibilities to work with temperature values, for example setting up channel 0 as the reference channel of the module. In this case, a PT100 is connected to channel 0 of the input module, while the remaining channels 1-3 use the value on channel 0 as their reference temperature. The setup of this possibility is shown later in the article.
Also you can select the setting fixed reference temperature, which basically compensates all input values by the reference temperature 0°C. However, with in reality the actual temperature on the reference point almost never being exactly 0°C, this setting seems quite impractical.
Another possibility of setting up the 6ES7134-6JD00-0CA1 input module is the setting internal reference junction. When using this setting, the reference temperature of an internal PT100 (inside the Base Unit) is used for compensating the values.
2 Internal Reference Junction[edit | edit source]
When using this setting, it is really important to use the correct type of Base Unit! Only Base Units with the type -0BA1 are suitable for this application, because they contain the needed internal PT100. Base Units type -0BA0 for example do not contain this PT100, and are therefore not to be used with this setting. However, when using a -0BA0-Base-Unit, the setting "internal reference junction" can be selected in the TIA Portal, but this is not recommended, as it could lead to the internal error "reference junction".
2.1 Settings in TIA Portal[edit | edit source]
The following settings are to be selected in the hardware configuration:
-> Check if the right input module is selected!
-> Set up the parameters according to the used thermocoupler! (in this example a thermocoupler type K is used.)
File:Channel 0 Parameters 1.png
-> Set "Reference Junction" to internal reference junction
File:Channel 0 Parameters 2.png
-> If you are using all 4 channels of the input module, the overview should look like this:
File:Channel 0 Parameters 3.png
This settings in the hardware configuration should lead to plausible values shown in your visualzation.
3 Using Channel 0 as the reference channel of the module[edit | edit source]
If using a PT100 instead of type -0BA1 Base Units, the following hardware settings can be used:
In this example the same input module type 6ES7134-6JD00-0CA1 and a Base Unit type -0BA0 are used.
-> Same as in the first example, check if the right input module is selected!
-> Connect your thermocoupler & PT100 as shown below:
File:Thermocoupler Drawing.png
The thermal resistor (4) works as the "sender", the thermocouplers (1) - here shown with equalizing lines (2) - as "recievers".
3.1 Settings for the reference channel[edit | edit source]
-> Important: The "sender" has to be set up as "PT100 climatic range"!
-> At "reference junction" set up Reference channel of group 0
3.2 Settings for channels 1-3[edit | edit source]
-> Set up for your specific device, in this example we use a thermocoupler type E
-> At "reference junction" also set up Reference channel of group 0
If the module is set up like this, every recieved value is compensated by the value on the reference channel.
Important: If the thermocoupler / the thermo wires are connected not directly to the input module, but to a terminal first, the wire material between the terminals and the input module should be the same as between the thermocoupler and the terminals. If "normal" copper wires are used, the "reference-PT100" has to be connected to the terminals, NOT directly to the input card, otherwise the measurement results could be distorted.
