irondesk40
Member
Have some equipment we built a few years ago that we utilized the micrologixs 1400 plc and allen bradley powerflex 525 drives in.
Will refer to them as lamination machines. Currently running in production and working great.
What i did was have the line speed set from the HMI and run a master motor used to feed fabric. There are a total of two other motors on the machine and i am sending a analog signal from the plc to the master that corresponds to the correct value to run the master motor from 0-10 yards per minute based on the size of the rollers etc. All the motors are driving identical size rollers but on the two other motors running with the master motor i installed prox switches on a swing arm that we use as a dancer. If one prox gets made then i slowy increase the speed of that motor until it comes off the prox, if the other prox gets made i slowly decrease. All of this is done in the PLC and at 0-10 yards per minute works very well.
Now that we are looking at making the machine capable of running 0-100 yards per minute i am wondering if it may work better if used a inclination sensor that is programmable to give a 0-10v signal out and connect that directly to the powerflex drive and trim the powerflex speed directly in the drive. Is it possible to connect a sensor up to a powerflex 525 and use it to trim a analog master speed reference. If so, hopefully someone on here has already went through it and share which way you think would be best.
Thanks
Will refer to them as lamination machines. Currently running in production and working great.
What i did was have the line speed set from the HMI and run a master motor used to feed fabric. There are a total of two other motors on the machine and i am sending a analog signal from the plc to the master that corresponds to the correct value to run the master motor from 0-10 yards per minute based on the size of the rollers etc. All the motors are driving identical size rollers but on the two other motors running with the master motor i installed prox switches on a swing arm that we use as a dancer. If one prox gets made then i slowy increase the speed of that motor until it comes off the prox, if the other prox gets made i slowly decrease. All of this is done in the PLC and at 0-10 yards per minute works very well.
Now that we are looking at making the machine capable of running 0-100 yards per minute i am wondering if it may work better if used a inclination sensor that is programmable to give a 0-10v signal out and connect that directly to the powerflex drive and trim the powerflex speed directly in the drive. Is it possible to connect a sensor up to a powerflex 525 and use it to trim a analog master speed reference. If so, hopefully someone on here has already went through it and share which way you think would be best.
Thanks