Control.com

• Variation in Gas Turbine load (MW) January 19, 2020
  We have GE frame 6 Gas Turbine (30 MW) initially operating/controlled by Speedtronic Mark-IV control system and later on upgraded to Mark VIe. Generally we operate GT on part load (Preselected mode) as per our steam and power balance. Since last few days we have noticed continuous load variation from 16.5 to 19.1 MW (Machine […]
• SLC500 PROGRAMMING GLITCH??? January 19, 2020
  Working on a shrink wrap program using a "AB SLC500/03"CPU and an AB Panelview Plus600 HMI. I have a logic sequence that is true, but the Binary OTE will NOT change state. No duplicate rung using the same bit address can be found. Installed a jumper in logic around all instructions,and Binary output will not […]
• Galvanic Isolator or Zener barrier January 19, 2020
  i want to understand 1. what is the basic different between them? 2. is there any guidelines we have to follow isolator or barrier? 3. Can we able to use barrier in place of isolator 4. Can anyone please provide me a detail earthing diagram of them? I have seen that barrier is loop powered […]
• Control valves, to control speed with limited feedback January 19, 2020
  Hi all I am new to this forum. I am posting because, I have struggled with a problem for some time new and need some inputs. I hope will help me. I have a water turbine (kind of) system that I need to control. - The speed of the turbine is adjusted by a ball […]
• DOH!, I've lost the default password. Any clues (HC-Y810 Digital Pressure switch) January 19, 2020
• HP steam transmitters on 1X1 configuration January 18, 2020
  Hi all, I am having difficulty understand the following. When running on 1*1 configuration (one Gt and steamer), I see that my HP steam flow transmitters start acting erractically when raising load. I have two transmitters A and B and both start acting up. My drum level on the HP is fine. You would think […]
• Gas Turbine Flame Detection January 18, 2020
  Hi We are having GE Frame 6B DLN Gas turbines. The original flame scanners (Reuter Stokes) which came with these turbines were facing repeated fluctuation problems in their readings and these fluctuations utlimately were becoming so low that we had to take turbine shutdowns to clean the scanners. We usually have high humidity in our […]
• GE Frame 6b Ratchet Motor January 18, 2020
  Hi All, we had a ratchet pump failure failure on our GE Frame 6B gas turbine. it happened when coming off load. We found the ratchet pump motor mountings undone and the supply oil pipe fractured. the motor drive end bearing was disintegrated and entered the motor winding causing burn out. We did not do […]
• ABB IMS UNIX 10.20 STATION NOT COMING IN RING January 18, 2020
  Hai, We are using HP B2600 station for ABB MOD 300 IMS history built on unix 10.20 ACE and reporting purpose. Recently our IMS station got crashed, subsequently we prepared new IMS with unix 10.20 ACE and ABB enterprise historian CD'S. After installing these two CD'S and system is getting healthy when it is not […]
• PLC3 1775-P2 January 18, 2020
  Anyone have any history with PLC3 racks? I have a 1775-A3 rack that has a 1775-P2 power supply. I'm having trouble sourcing a 1775-P2 replacement can a 1775-P3 replace a 1775-P2 without issue?