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Recent content by electrician1

  1. electrician1

    STAHL HMI model :EXICOM ET-416-FX- troubleshooting guide

    Good morning Support Any experience with STAHL HMI model :EXICOM ET-416-FX. After re-initiating power to the control panel HMI didn’t boot up. When powering up , the HMI emits 4 beeps and LCD doesn’t power up. Failed HMI was removed from the panel and bench tested in workshop with identical...
  2. electrician1

    Allen Bradley Isolator model 931-TD002 query

    Thanks Danw2 for taking time on this. In the meantime we have also received a confirmation from our vendor saying this isolator/splitter is not correct type for our application i.e wrong parts were installed inside control cabinet.
  3. electrician1

    Allen Bradley Isolator model 931-TD002 query

    Thanks Danw2 for prompt reply. In fact the model is 931S-U561 and it doesn't have dip switches. See attached photo showing more details.
  4. electrician1

    Allen Bradley Isolator model 931-TD002 query

    Hello Support, I'm on site trying to commission application with several Allan Bradley isolators model 931-TD002. This is a new system not being tested before. Isolators were installed to isolate/split 4-20mA signal into two outputs. As per dwg. we are simulating signal directly to isolator...
  5. electrician1

    ABB 800 drive -encoder error

    This has all been checked. We do have spare drive and we were actually thinking to install new drive just to see if it will generate the same problem
  6. electrician1

    ABB 800 drive -encoder error

    Its four years old application and just a month ago we started to deal with that problem.Application is still running without any problem but it’s quite annoying to have that alarm popping up all the time at our scada and drive screen.
  7. electrician1

    ABB 800 drive -encoder error

    Grounds and shields are connected as per manuf. drawings. Cables coming into enclosures are not unnecessary coiled. Motors are close to 330ft far away from VFD drives and motor power cables are in separate cable tray. Encoder cables are in cable tray together with 24V DC solenoid cables...
  8. electrician1

    ABB 800 drive -encoder error

    Hi, I've got following problem -hope somebody can help- any input would be much appreciated Machine runs with two motors powered by (ABB ACS800 drives) in master/slave configuration On master drive we have intermittent encoder error (7301) which is popping up at motors low rpm and sometimes...
  9. electrician1

    Ultrasonic EEx d(ia)

    Mohsen, If your sensor is labeled as EEx d [ai] that means you have intrinsic safe associated component inside flameproof box. You are allowed to install it in all three zones 0,1,and 2. Certified barrier gland is mandatory on junction box. Sensor, power supply etc. all must be connected as...
  10. electrician1

    need a sensor to measure fluid level, of turbulent drilling mud

    We are dealing with mud tanks as well, and believe that ultrasonic sensors are the best solution. We use Prosonic M type,it's very reliable and work's perfect.Float devices are not the best solution,neither pressure transducers especially if specific density of the mud is changing
  11. electrician1

    Intrinsically safe for Class 1 Div 1 Group D

    That is a type of protection that limits the energy available in the hazardous area to the level below that which could ignite a flammable atmosphere as itsmoked described. 2 types of barriers used in IS circuits: Zener barriers and galvanically isolated barriers. Zener barrier must have earth...
  12. electrician1

    Harmonics affecting computers

    Slavag as per your link from April.2003-March.2004 Dell manufactured motherboards for those computers with "faulty" components. We received our computers in November.2004 ! Any way different type of new computers is already installed.Lets see what will happen. Also like LionelHutz mentioned my...
  13. electrician1

    Harmonics affecting computers

    Hi Salvag computers are dell GX 280 Optiplex ups - Powerware3 105 That is what I was thinking.may be just serial/type problem. But they have been working ok for almost 3 years and then suddenly they all burned in short period of 5-6 months!
  14. electrician1

    Harmonics affecting computers

    Yes all computers are connected to communication switch.communication switch has its own separate ups.Ground should be on the same potential as grounds for computers power! Are you trying to say that some voltage spikes can be induced in net (CAT) cable and that can be the reason of burned...
  15. electrician1

    Harmonics affecting computers

    Thanks for quick reply’s Computers are already connected to ups.Each of them has its own ups. About DC power,yes it is old 6 pulse.I will have a look in all this
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