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  1. nogienugz

    Applying HRG scheme on small Genset

    Same here, I've never seen one applied on a 60kW, 600V EDG and we don't have a L-N loads. And, Waross, you just brought up a good point there. Reliability doesn't only mean 'working even if there is a GF'. Reliability also applies to other discipline, NON-electrical discipline. I've put in an...
  2. nogienugz

    Applying HRG scheme on small Genset

    Hi, Anyone here have applied a HRG (high resistance grounding) scheme on a 60kW EDG? Our process engineers are saying that the system that the EDG is supplying should be ON at all time as much as possible but I feel that putting one on that small load is not worth spending a NEMA 3R resistor...
  3. nogienugz

    Wiring to an MCC with Type IIB or IIC control wiring

    Thanks for the input Jraef. Will go to site and talk to the electricians tomorrow, we'll see what's actually there and will also check how they wired their PLC inputs. Cheers,
  4. nogienugz

    Wiring to an MCC with Type IIB or IIC control wiring

    Hi, ideas anyone? Regards
  5. nogienugz

    Wiring to an MCC with Type IIB or IIC control wiring

    Hi, I took a picture and tried attaching the schematic and wiring again. Let me know if it worked. Cheers,
  6. nogienugz

    Wiring to an MCC with Type IIB or IIC control wiring

    Hi Jraef, I'm aware that with type IIB and IIC, there is a pre-wired interconnection between control TB among the MCC buckets. I also know that it's only with Type 2C that you get a "marshalling" section at the end of the line up. I also know that CPT for each bucket has its own neutral to...
  7. nogienugz

    Wiring to an MCC with Type IIB or IIC control wiring

    Hi Controlsdude, I get your point about overloading the capacity of the neutral and who easy it is to mess things up there is one neutral for all those PLC signals. I haven't wired it myself, I usually deal with type 1B MCC's where control TB in the buckets are not interwired. But going back...
  8. nogienugz

    Wiring to an MCC with Type IIB or IIC control wiring

    Hi, Got a question on bringing a multi-core control wiring from the PLC cabinet to MCC with type 2B or 2C control wiring. It says in the definition of NEMA that there is interconnection between control terminal blocks among different buckets in the MCC. Does that mean that neutral/common...
  9. nogienugz

    Wiring Motor ON/OFF status to PLC

    I'm pretty sure that the specs requires that all motors must be start/stop via the PLC. Totally agree with you on 95/96 contact as the EOL can communicate the OL status via the com port.
  10. nogienugz

    Wiring Motor ON/OFF status to PLC

    The one that I just showed was for a previous project (the one that did not use E300 communication ports, I don't know why). We wired NO contacts to the E300, one for IN2 and one for IN3, so the PLC knows if the loading spout is moving UP or moving DOWN. In the new project that I'm working on...
  11. nogienugz

    Wiring Motor ON/OFF status to PLC

    Oops, forgot upload the first page. Here it is: https://files.engineering.com/getfile.aspx?folder=f559599f-f675-464f-b893-142b3d967997&file=1.pdf
  12. nogienugz

    Wiring Motor ON/OFF status to PLC

    Hi thebard3, Got that. That's probably the reason why we hardwired contacts in another project. But in this, we used AB E300 EOL w/o comm. ports. This one has a local disconnect switch (see attachment)...
  13. nogienugz

    Wiring Motor ON/OFF status to PLC

    Hi itsmoked, Yep, it'll trip the EOL in the event of a fault but you're gonna see that when you're in front of the panel display (of the EOL), in front of the MCC. To an operator looking at the HMI in the control room how is he gonna see that? The HMI receives its signal from the PLC so, how...
  14. nogienugz

    Wiring Motor ON/OFF status to PLC

    Hi itsmoked, Just to comment on this: They series these two sets of contacts so the PLC knows the motor is running or not, regardless of the cause. Separate use of those contacts to the PLC would've shown the motor ON/OFF AND if there was a critical overload trip. That's what we usually do...
  15. nogienugz

    Wiring Motor ON/OFF status to PLC

    Hi itsmoked, The C441 EOL and its communication module are in the attachment that I uploaded (files combined in one PDF file). It also includes the vaculoader vendor drawing showing that they need ON/OFF status from the PLC.
  16. nogienugz

    Wiring Motor ON/OFF status to PLC

    Hi thebard3, The NC 95/96 is the OL for the C441 relay. Whe we use it as a protection for the EOL itself or as the OL for the M coil. (I actually prefer using another OL for the M coil just in case one of the wire loosened up). But how does the c441 relay communicates the motor ON/OFF status...
  17. nogienugz

    Wiring Motor ON/OFF status to PLC

    Got a question for you guys. Whenever we want a PLC ON/OFF status for the motor, we would run cables, provide a NO contacts to the PLC in series with the motor starter coil (see attached VACULOADER SCHEM 2.pdf). Now our engineer wanted to use EATON'S electronic overload relay (C441) and wanted...
  18. nogienugz

    Analog Ouput/Input

    Thanks for the input guys, 'appreciate it!
  19. nogienugz

    Analog Ouput/Input

    Hi, I'm usually confuse on how to tell if a particular device gives an analog input to the PLC or does it need an analog input from the PLC (hence PLC output). I usually get my way around by talking to the vendor. By looking at it based on the drawings e.g. for the kinetrol actuator that I'm...
  20. nogienugz

    Computing for the dB power loss for a PAGA speaker Loop

    GeekEE, Oh, Im sorry about the abbreviation Ü. KP stands for "Key Person" in our corporate lingo. He's responsible for checking of the deliverables (drawings, calculation reports, tender documents, etc.) of our team. Regards,

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