Search results

Just another waste of time from someone that joins and posts on the same day to never be seen again. There are very few posts on this forum as it is, maybe Ai generated to bump up the number of posts?

The more the temperature moves away from zero the larger the tolerance for the class. As David_2 article notes you can tune a temperature transmitter to a specific RTD for higher accuracy. You need to look at accuracy of whole system, including temperature transmitter variation with ambient...

analog output and analog input not mentioned in part number you have provided above

I presume the engine would be producing heat and PID controller would be controlling cooling water. To increase temperature, controller output would need to decrease water flow.

must be a bad connection somewhere causing volt drop

Are you measuring voltages between the two float switch terminals or from the switch wire terminal to 0V? Check that you have the positive and negative wires connected to the correct coil terminals on the SSR. Otherwise make sure your SSR coil is connected to the switch wire on the level switch...

There is always signal attenuation, the longer the cable the worse it gets. However all the vendors I have seen state 100m limit as attenuation is negligible up to this distance

If this is something you want to work reliably then stick to the industry standard of 100m of copper Ethernet cable between switches. You can achieve 140m by adding switches or use fibre optic cable if you don’t want a switch in the middle.

How does the PLC control the auger direction and start/stop? By comms or wired I/O? If I/O is it connected to the PLC or via comms?

A flow meter will be as accurate as its specification sheet, as long as it is installed as required. Piping before and after mag flow typically requires straight pipe for 5 pipe diameters upstream and 3 down. For insertion mag flow you need to check insertion length is correct. Ultrasonic is all...

My thought as well, we have used mass flow meters in the past instead of mag flow to avoid this problem with very clean RO water

169.254.1.XXX is very uncommon for a working product line, you normally only come across this on individual devices that are not set up properly with a fixed IP address: https://www.whatismyip.com/169-254-ip-address/

I have done something similar but based on the run hours of the motors instead of the number of starts. As you only want one motor off this will simplify your logic, you just need to work out which motor has the highest number of starts and make sure the other two do not have any failures. My...

What is the permutation meant to do, control the starting order of pumps or something else? Are individual pumps started/stopped due to demand or something else?

Try different configurations in the PLC so you can do some more diagnosis, try Binary Data, 4mA should equal 0 and 20mA should equal 4095.

are the floating-point numbers written directly to the data registers or converted first? are the data registers used to permanently store data or are they just being used as a scratchpad area and overwritten quite often with temporary calculations?

Is the ultrasonic level sensor loop powered or externally powered? If the level sensor is externally powered, can you program it's 4-20mA output to be passively powered? What parameters do you have set up in the PLC card Configure Parameters dialog box?

The load of a DC solenoid is resistive.

Yes some VFDs do have built in smarts including PID control. There may be other single points of failure that could take down your whole system as well, so you should evaluate all failures not just the PLC.

You have the coil voltage and the watts should be in the data sheet, use ohms law to calculate current or resistance