My customer asked to display the Pump winding temperature on HMI screen.

I have 2 Nos of pumps and RTD inside this pump and terminated to pump kiosk.

How to program to display the temperature by taking input from RTD?

iS IT VOLTAGE INPUT OR CURRENT INPUT?

My AI card details below.

S7 1200 plc

tia portal v14 sp1

0_Einstein

You need an RTD analog input module, or an RTD to voltage/current signal conditioner.  If you only have one RTD signal, you might consider a signal board to accept the RTD signal. 

jibemathew

My customer asked to display the Pump winding temperature on HMI screen.

I have 2 Nos of pumps and RTD inside this pump and terminated to pump kiosk.

How to program to display the temperature by taking input from RTD?

iS IT VOLTAGE INPUT OR CURRENT INPUT?

My AI card details below.

4

Siemens

6ES7231-4HF32- 0XB0

SIMATIC S7-1200, Analog input, SM 1231, 8 AI, +/-10 V, +/-5 V, +/-2.5 V, or 0-20 mA/4-20 mA, 12 bit+sign or (13 bit ADC)

1

S7 1200 plc

tia portal v14 sp1

 

If I get AI support RTD, how to program it.

What is the temperature input raw int values RTD?

Is it 0-27647 Like 4-20mA?

Is it analog input come from RTD or NO contact from motor winding RTD?

3 wires

0_Einstein

With a Siemens RTD analog input module or signal board, the hardware configuration telling the PLC how to interpret the RTD (by telling the PLC what type of RTD is attached) gives you the temperature with 1 or 2 decimal places directly.  No conversions.

If you use a signal conditioner, it can come into the plc as voltage or current and you will need to scale it in plc logic (using NORM_X and SCALE_X).

jibemathew

0_Einstein

You need an RTD analog input module, or an RTD to voltage/current signal conditioner.  If you only have one RTD signal, you might consider a signal board to accept the RTD signal. 

jibemathew

My customer asked to display the Pump winding temperature on HMI screen.

I have 2 Nos of pumps and RTD inside this pump and terminated to pump kiosk.

How to program to display the temperature by taking input from RTD?

iS IT VOLTAGE INPUT OR CURRENT INPUT?

My AI card details below.

4

Siemens

6ES7231-4HF32- 0XB0

SIMATIC S7-1200, Analog input, SM 1231, 8 AI, +/-10 V, +/-5 V, +/-2.5 V, or 0-20 mA/4-20 mA, 12 bit+sign or (13 bit ADC)

1

S7 1200 plc

tia portal v14 sp1

 

If I get AI support RTD, how to program it.

What is the temperature input raw int values RTD?

Is it 0-27647 Like 4-20mA?

Is it analog input come from RTD or NO contact from motor winding RTD?

3 wires

 

yOU MEAN iF iGET AI support RTD and change AI device properties, whatever the value receive is temperature which can display on HMI.

Hello jibemathew;

One detail:

The value you will read in the PLC, when using a RTD module, is a multiple of 10,0 of the actual temperatire read by the RTD.

If you read 1250, your temperature is 125.0 C.

If you read 523, your temperature is 52.3 C.

This is valid when the temperature read is within the standard range accepted by the RTD module. If you exceed this limit, you get a reading 32767; if you undershoot, you will read -32768. you can use these values to trigger an alarm signals.

See the attachment, from the S7-1200 System manual:

https://support.industry.siemens.com/cs/ww/en/view/109772940

Hope this helps,

Daniel Chartier