Search results

Never say never, the type of process isn’t even mentioned

If you need a fast reacting system and your downstream conditions can change, affecting flow rate

The level controller adjusts it output relevant to the level, this output is then scaled to a flow setpoint for the flow controller

Other ways of reformating are with a Siemens Field PG or making an image of a good Siemens card and restoring it to the problem card. Cannot use Windows to re-format card.

What type of inverter is the PV connected to? Usually these will be able to control power factor at your point of connection to the grid, some even when there is no PV generation

Looks like the 3 way switch is for Hand or Auto. In Hand mode the compressor keeps running, only the load solenoid is turned off once the pressure is reached. In Auto the motor is turned off if the pressure is reached and does not drop again during the Run On Time. The other timers are pneumatic...

The question does not have any detail about the action of the positioner on signal failure. Loss of signal does not necessarily mean loss of air to the actuator. As 0mA is less than 4mA my answer would be Fully Open.

Just using basic ladder logic and maths, you would move the bits of the float32 Modbus registers to two integers and then calculate floating point number. The 8 exponent bits to one word and the 23 mantissa bits another. On other brand PLCs it can be easier using a union structure but I could...

Sounds like it is the configuration of the P2-SCM, check baud rate, bits, termination character is all setup the same as the working P2-SCM.

It does not look like you have use the correct type of extension cable for a type K thermocouple.

If you have electrical schematics for the machine, post the page showing the PLC safety card you are having issues with along with card part number. Does the card have test pulses wired as a supply to inputs?

The S7-300 analog input card should be setup as 4 wire configuration, for 3 or 4 wire devices. Wire OUT2 of IFM PN2670 to the positive terminals of each cards channels. Wire 0V to the negative terminals of each cards channels.

With Modbus TCP some devices are both a master and a slave, though I don’t know if this is the case here.

For the priming add an automatic air bleed valve on the inlet side of the pump. For shutdown protection you can use a fork level switch on the inlet pipe to detect lack of liquid. For normal start/stop in a sump use a level switch or level sensor.

I presume this is a Proface panel. Do all your tags have to be in the one table? Or can you have multiple tables with a max of 256 in each one?

Generally the maximum voltage the VFD can output is the line voltage and the motor would be rated for that, maximum frequency should be checked.

Yes, a VFD can raise a motor rpm higher than the nameplate. However you can only go so far, the more above nameplate speed the more torque decreases.

Are you trying to detect two positions or three? For two positions a limit switch with a normally open and a normally closed contact, or changeover contact will do the job.

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...