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+--- Wątek: How to set up INPA1 (/showthread.php?tid=3050)
How to set up INPA1 - BMA - 12-21-2024
I need to measure voltages from 0V to about 130V, so I am using resistors divider ( R1 =47k, R2=1k ).
How should I properly set up INPA1 in LK4? Or into which input should I connect the measured voltage?
Thank youi for help
RE: How to set up INPA1 - BMA - 01-09-2025
Thank you for your reply. I have solved it.
You may be a greater expert (than me - I am just a beginner) on using LK4 - .
Can you please help me with setting up Email in LK4?
I set up the Email like this
https://preview.tinycontrol.pl/lk4/#/email
( with my credentials) but no emails arrive ( even if I just use Test email sending option).
A also tried to use with my email server ( used with No encryption option ) but the same.
My network works, because the time is updated via NTP server.
Do you have any idea what try?
Thanks for help
RE: How to set up INPA1 - kimberlysni - 04-17-2025
(01-09-2025, 11:09 AM)BMA napisał(a): Thank you for your reply. I have solved it.
You may be a greater expert (than me - I am just a beginner) on using LK4 - .
Can you please help me with setting up Email in LK4?
I set up the Email like this
https://preview.tinycontrol.pl/lk4/#/emailBlock Blast
( with my credentials) but no emails arrive ( even if I just use Test email sending option).
A also tried to use with my email server (used with No encryption option) but the same.
My network works, because the time is updated via NTP server.
Do you have any idea what to try?
Thanks for help
I also attempted to utilize my email server (without the encryption option), but the same thing happened.
RE: How to set up INPA1 - junbon - 05-08-2025
(12-21-2024, 07:35 PM)BMA napisał(a): I need to measure voltages from 0V to about 130V, so I am using resistors divider ( R1 =47k, R2=1k ).
How should I properly set up INPA1 in LK4? Or into which input should I connect the measured voltage?
Thank Snow Rider 3D for help
To measure voltages from 0V to 130V using a resistor divider, you can follow these steps:
Resistor Divider Setup
- Resistor Values:
- R1=47kΩR1=47kΩ
- R2=1kΩR2=1kΩ
- R1=47kΩR1=47kΩ
- Voltage Divider Formula:
The output voltage (VoutVout) from the divider can be calculated using:
Vout=Vin×R2R1+R2Vout=Vin×R1+R2R2
For Vin=130VVin=130V:
Vout=130V×1k47k+1k≈2.7VVout=130V×47k+1k1k≈2.7V
Connecting to INPA1
- Connect the Resistor Divider:
- Connect one end of R1R1 to the voltage source (the point where you want to measure the voltage).
- Connect the other end of R1R1 to one end of R2R2.
- Connect the other end of R2R2 to ground.
- Connect one end of R1R1 to the voltage source (the point where you want to measure the voltage).
- Output Voltage:
- The junction between R1R1 and R2R2 will give you the reduced voltage (VoutVout). This is the voltage you will measure.
- The junction between R1R1 and R2R2 will give you the reduced voltage (VoutVout). This is the voltage you will measure.
- Connect to INPA1:
- Connect the output from the junction (between R1R1 and R2R2) to the INPA1 input in LK4.
- Connect the output from the junction (between R1R1 and R2R2) to the INPA1 input in LK4.
Safety Considerations
- Ensure that the maximum voltage at the divider output does not exceed the input limits of the INPA1.
- Check the specifications of INPA1 to confirm its maximum input voltage. In your case, it should comfortably handle up to 5V since you're scaling down from 130V.
Final Notes
- Make sure to double-check all connections and calculations before powering up the circuit.
- If you're unsure about the resistor values or the configuration, it's always good to simulate the circuit or consult with someone experienced in circuit design.