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Mitsubish's A0J2H CPU is being employed.Maybe 800 rungs.Comments are key.Is the project uploaded from the PLC ROM??

Situation: 7 year old, motor controlling, mitsubishi PLC has been very reliable. Electrician has installed hardware for monitoring (PC with GX developer). Unfortunatly the project copy which was on a floppy disk has been lost. Question: how does one retreive this project from the plc? AS I...

Yes rbulsara ,PLC was stated in error, the proper terminology is fire controller manufactured by many for Tyco. As our company refuses to take advantage of vender sponsored training ,we elect. tech's must often OJT on these systems and quite often visit & question the pro's @ ENG-TIPS Forums...

Hi. Our companies' building has a 6 year old fire detection system. It's outfitted with a PLC that has addressable heats and smokes also some call points and rate of rise heats with dip switches. These devices are all connected in parallel, on a 15 volt closed loop circuit. Can someone suggest...

OK. So everyone agrees that in principal , this genset could be a backup to the local utility (meeting local's standards) Good points have been made and are being well received. This is a good start for sure! Waross , using OCPD in place, the main station could continuously be provided with...

Thanks all for your time! And yes, my question to the forum, is due to the need for contingency planning. Regards

A utility provides a facility with 12470 volt 3 phase power.At the remote end of this huge facility is a delta connected sub-station and it's secondary steps down to 480 volts for distribution. A 3 phase 4000 KW generator (back-up) producing 480 volts has a tie to the secondary side of...

Hi. Our 480 volt ungrounded system utilizes ground detection lights and also an insulation monitor with a Megohm meter.This insulation monitor unit is hard wired to only one of 3 bus phases. My question: How does an insulation monitor work?

Thanks for the info Jdkasper...We are using a general purpose Mitsubishi MELSEC-A type AOJ2 controller. The search for a direct fit battery is now over. Your suggestion of taking Newark's PLC 3.6 volt with tabs and soldering on the 2 pin connector makes good sense.Thanks!

My Mitsubishi PLC's lithium battery is nearly 5 years old. Problem #1 This 2 pin connected, ER17330v/3.6volt battery as it seens, is very elusive. I need a reliable battery cross reference or a distributor. Problem #2 What are the do's and don't's to changing these batteries? Thanks!

Gensets controls are woodward and Schneider.I will investigate further...

Thanks for the responce geek! APD is auto parallel device...Individualy run,Genset power factor meters are within expectation. Up until the last routine run, these generators have been sharing the load evenly.When on Generator power we are an island.Another test run will be given the 29th.I...

Generator paralleling problem Our plant has Two-2 M watt, 480 volt alternators. Scenario: Generators are paralleled via APD onto a common bus. Voltages, kwatts, kamps and frequency meters all concur. Problem 1: The power factor meters are 180 out. Generator 1 meter is pegged to max. IND...

Seems some euro communities are successfully utilizing USA motors using their 380-415v @50f .But what I really need to know is, is it possible, to run this euro 380-415v @50 cycle motor I possess, on a 460v @60 cycle feed . Or would it be better to configure it to it's 220v -3phase -50 f(euro)...

Have a 3 phase circulator pump motor(fractional HP)that is rated 220/380-418 volt @ 50 cycle. Problem: Only availble voltages, are 208 and 460 @60 cycle Please advise...