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  • Users: automatic2
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  1. automatic2

    wire marking system

    looking at investing into a shrink sleeve portable printing system. Can anyone reflect on their experiences. Application is largely control / PLC wiring.
  2. automatic2

    comm check

    I'm digging deeper into this PLC thing and reading about various serial busses. DeviceNet, ControlNet, /IP. Which is leading the way and which has better performance under remote I/O connections. Anyone offer a generalization where one exceeds over the other.
  3. automatic2

    metering viscous fluids

    I'm looking at metering a PVA type liquid (wood glue) and was wondering if a pnuematic diaphram pump would give me any repeatability. Anyone try such an implementation?
  4. automatic2

    Controllogix - Events

    anyone with any info? trying to add a digital input Change of State event to my program. Have created the task, the program and a simple routine which increments a dINT, to confirm the call. Event set up as COS, tagged to an AC input module. That module then has a single input set for COS on...
  5. automatic2

    Controllogix Ethernet

    I've been having a problem connecting to our network on occasion and I'm sure it's a Window 2000 network setting. At times I can't connect to the PLC, with no response pinging. I can make it work by connecting to the internet, pinging to confirm, then returning to the PLC network. At times it...
  6. automatic2

    metering pump

    Does anyone know who/where I can start a search for a smaller metering pump with following criterimn; - flows approx 2ml/sec. at ~10% precision - can be ganged/stacked to produce 3 flow streams from common input drive - water based medium - physical size of approx 3" dia or less, driven by an...
  7. automatic2

    DC motor software

    Anyone know where I can obtain dome DOS based routines that will control my PWM based motor drive through a PIO or PIO/timer combination. Basically looking for some ramp/run/go to/rate type routines that will output the PWM waveform along with reversal. I intend to use an older XT motherboard...
  8. automatic2

    PM motor control

    Looks like the current/thermal qualities of a ua78xx regulator meets the needs of a small PM motor application. I'm thinking of directly driving the motor off the output of the regulator. I would need to add a variable output divider inbetween output-common as to adjust voltage for setup. Here's...
  9. automatic2

    gear pump volume

    I am investigating the use of a gear pump to use as a metering pump. By sensing the drive motor revolutions, I'm hoping to deliver a preset quantity of fluid with constant repeatability. My question for anyone that knows is, what formula can I use to calculate the volume per pump rotation. I'm...
  10. automatic2

    water injection

    I have an application where I inject a metered quantity of water based fluid into a container (atmoshpere). I use three pneumatic cylinders to draw up the fluid then inject it, in syringe fashion. I drive the cylinders using a lead screw, drive plate assembly. The problem I'm having is in the...
  11. automatic2

    Flow divider needed

    Does anyone know of a flow divider that can be used to seperate a flow of water into three equal flows. Flow rate is relatively small, approx. 300ml/min. Pressure is steady from supply at approx. 50psi. Thanks in advance.

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