We have an 8-motor/3-axis machine which, in essence, is a robot as far as the RIA standards go. The controls for the machine include a teach pendant with 2 jog buttons, a 2-channel e-stop button, and a 3-position enabling device. My question is what makes the circuitry for the 3-position...
We have an 8-motor/3-axis machine which, in essence, is a robot as far as the RIA standards go. The controls for the machine include a teach pendant with 2 jog buttons, a 2-channel e-stop button, and a 3-position enabling device. My question is what makes the circuitry for the 3-position...
I have heard different recommendations on methods of grounding when it comes to PLCs. What type of fasteners should I use when connecting the equipment grounding conductors to the ground bus? I have heard recommendations for zinc-plated screws and star washers. Can anyone offer a detailed...
We manufacture industrial automation that is asscociated with mechanical power presses and we have a customer who has a specification that reads "A suitable detector lamp shall be provided to verify ground continuity. The pilot light shall be a transformer push-to-test." Is this a code...
We use 24 volt switching power supplies (115 vac to +24 volts DC) to feed servo drive control circuits and have the (-) terminal of the power supply connected to earth ground (requirement of the drive manufacturer). In my past experiences, I have seen ground wires burned because maintenence...
It is my understanding that a safety relief valve must be installed on all surge tanks to prevent mishaps due to possible failure of the compressor to shut down. If ASME code requires this, then how do I size the valve? I have been told that the scfm rating of the valve should exceed the output...
I have been told that Allen-Bradley has another manufacturer make their IEC relays and they are identicle to the OEM's brand. Can anyone tell me if this is true and if so, who makes them? All I know is that the Allen-Bradley relays are made in Switzerland. We have several customers who spec...
We have been using AutoCad to draw our electrical diagrams and schematics but we are finding it to be a lengthy process to freehand them in AutoCad. We design and manufacture controls for part transfer systems with servo systems. Is anyone aware of a good AutoCad application designed for...
