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84 ExcellentAbout ElectronGuru
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In SLC, the source is multiplied by the rate you specify. The result is added to the offset and sent to the destination. To try to solve you're first one; SCL1 Rate 25,000/10,000=2.5 (Rate)2.5X(Zero)4 = 10 +(offset)-2,500 = -2490 (Rate)2.5X(Span)20=50 +(offset)-2500 =-2450 It appears your range is 4-20 = -2490 to -2450 But it's nearly 2am, I'm falling asleep at my desk, and I probably screwed up something. Probably best you open the project and click on instruction help. That said, these are some typical calculations used for figuring out a linear relationship: Scaled value = (input value x rate) + offset Rate = (scaled max. - scaled min.) / (input max. - input min.) Offset = scaled minimum - (input minimum x rate)
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Panel View 1000 Plus: application password reset
ElectronGuru replied to josedavidchcr's topic in Allen Bradley / Rockwell Automation
As mentioned above, there is nothing in the configuration mode that allows you to make changes to the application. You can only change which application will run, the IP address, etc. Application changers have to be made in FactoryTalk View Studio, then create and download a newly modified .MER. That said, you may consider creating a new display for your application that includes the admin add/modify users/groups features, which will allow you to modify passwords and such at the PanelView during runtime. This is usually a display that is accessible only by admins/supervisors so again, you'll still have to remember that password. -
RSLOGIX 5000 FACTORY TALK
ElectronGuru replied to labonte71's topic in Allen Bradley / Rockwell Automation
When you open RSLogix5000 / Studio5000 it tends to keep the setting from the last user login. So things like color & font preferences stay with the user, not with the specific laptop or other user access point. Assuming that when you open the project, the display shows Studio5000 with the correct project name and tool bars at the top; On the Windows tool bar, hover over the icons one at a time until you come across one that says "Toggle Controller Organizer Window" and click it. That should get you going. -
EDS Hardware Wizard is not installing EDS Files
ElectronGuru replied to Chris Elston's topic in Allen Bradley / Rockwell Automation
@ked Ironic that you posted this today because yesterday I needed to update the EDS for a PowerFlex525 V7 on my new laptop, and it took me a quarter of an hour to figure out they'd changed the name of the EDS tool. Every time we get used to something, they change it, lol. -
Graham EDL liked a post in a topic: Powerflex 753 not reaching AI Setpoint, no faults or alarms
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FT View Studio Global Object Updata
ElectronGuru replied to userfrompoland's topic in Allen Bradley / Rockwell Automation
If both projects are on the same development laptop, you can copy and paste the object or display from one project to the other. After making edits, you can also export the global objects display from project A as a .GGFX file and import it into project B. However, since they are separate projects, there's no way make changes in one that will automatically update in another. They objects or objects display must me manually moved from one project to another. Hope this helps. -
Powerflex 753 not reaching AI Setpoint, no faults or alarms
ElectronGuru replied to Graham EDL's topic in Allen Bradley / Rockwell Automation
If the old drive was always accelerating, then it almost certainly was hitting a limit. Again, I'd refer to parameters 935 to see if you've hit the current or other limit, and as @VFD Guy suggested, 945 if you've hit any other limit. Usually when a drive is bouncing rapidly between accelerating, at speed, and decelerating, it's pretty much "at speed" and just not regulated well. I see this "hunting" a lot in V/Hz mode or when a low resolution encoder is being used. Unless you're in FV mode with a higher resolution feedback, it can be difficult to lock in and maintain an exact frequency output, and a constant At Speed indication. -
Graham EDL liked a post in a topic: Powerflex 753 not reaching AI Setpoint, no faults or alarms
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Problem with JSR to function block diagram
ElectronGuru replied to frank.seipel's topic in Allen Bradley / Rockwell Automation
Is the imported routine in a scheduled program? When you verify the project, do you get a warning that the imported routine can't be reached by the main routine? Having you tried saving, closing, and re-opening the project? -
ElectronGuru liked a post in a topic: Powerflex 753 not reaching AI Setpoint, no faults or alarms
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Powerflex 753 not reaching AI Setpoint, no faults or alarms
ElectronGuru replied to Graham EDL's topic in Allen Bradley / Rockwell Automation
A couple of times in my career I've seen a diode in the converter section (input side) of a drive go bad and it didn't alarm or fault because bus voltage was maintained, but performance did suffer quite a bit. I've seen main control boards go bad and not throw alarms or faults because the board (being broken) didn't know it was broke. Also, someone could have tampered with the parameter settings at the drive, such as setting the current limit too low. This would definitely keep you from accelerating regardless of commanded speed reference, and not throw an alarm. When I'm troubleshooting these types of problems on a PF753 or 755 I go strait to parameters 935 and 936, Drive Status 1 & 2. If you want to know what the drive *thinks* it's doing (compared to what it's actually doing) this is a good place to start. If the drive should be accelerating based on the speed reference input, is the drive actually trying to accelerate as indicated by bit 4? Or did it hit a current or other limit as indicated by bits 26 and 27? I think every PowerFlex drive has a Drive Status parameter but the 750s give the most information, and have been very helpful to me when troubleshooting non-alarm/non-fault performance issues. I can't remember if the outdated Drive Explorer (last release was 2011) has a compare tool or not, but I often run compares in Drive Executive or Connected Components Workbench (CCW) when I'm considering these things. Most often, people are not randomly changing parameter values, but running the compare tool against a known good program is an easy way to be sure, which allows me to quickly check that off the list of possibilities. The image below is from Drive Executive, which has to be purchased from your local Rockwell distributor. CCW is free and can be directly downloaded from the Rockwell site without a license. I've found that both are more intuitive and easier to use than Explorer. Since replacing the drive seems to have fixed your problem, the cause is almost certainly in the original drive. But that doesn't automatically mean it was a hardware failure. If it were me, I'd go through it with a multimeter and scope to check input diodes, output IGBTs, etc. If I got no joy there, I'd power it up at the shop, run a compare tool against a known good program, and then start putting it through it's paces. All that said, while nothing breaks without a reason, I've thrown away a drive or two without ever having found out what the true failure cause was. Hope this helps. -
SLC5/05 EEM Troubles
ElectronGuru replied to evanmars's topic in Allen Bradley / Rockwell Automation
I'm not familiar with the EEM instruction but almost all Allen Bradley hardware defaults to a subnet mask of 255.255.255.0 and a default gateway of 0.0.0.0, which is what you have on the working model. Can you temporarily change your problem PLC/scale combo mask and gw to see if that helps? -
Communication Issue Between 1756-L81E/B and 1734-AENT/C - Module Fault (Code 16#0203)
ElectronGuru replied to LuisGonzalez's topic in Allen Bradley / Rockwell Automation
I thought the same thing as @pcmccartney1 but the module is Keying is set to Compatible, so that "warning" is probably not what's causing the connection time out fault. The controller's configuration for any given module represents what that controller expects to see when it connects to that module. When set to Compatible, any module with the same or higher firmware as the configuration should be able to connect. Exact match would prevent comms even if the minor FW rev was different. That said, it's too quick and easy of a possible fix to brush off without trying. Before you do a download, while online, switch from Compatible Keying to Disabled and see what happens. My guess ism the warning will go away but the fault may remain. If the fault does disappear, the try changing the fw rev offline and re-download. Here's what the book says about that fault: "The owner or originator recognizes that the target device is on the network or backplane, however, I/O data and messages are not being responded to. In other words, the target can be reached, but its response is not as expected. For example, this fault may be indicated where multicast Ethernet packets are not returned. When this fault occurs, the controller usually attempts to continuously remove and remake the connection." Once you're done checking the Keying settings, you might think about ringing out the network connections and such. What led up to this problem? New installation? Existing system with recent parts replacement? System upgrade? -
While the PF525 is a direct replacement for the PF4, I doubt the EDS files would be the same. In fact, the 525 has several hundred EDS files. I've attached a doc that shows step-by-step how to download and install PF52 EDS files to a laptop. Hope this helps. EDS.pdf
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POWERFLEX 70 QUESTION
ElectronGuru replied to oldnerd's topic in Allen Bradley / Rockwell Automation
@VFD Guy is spot-on but I'm amazed the drive didn't burn up. The last time I saw this mis-wire on a PF525, it sounded like a canon blast when they closed the disconnect. PF70 must be a bit more robust, lol. -
SLC 5/04 Communication Issue
ElectronGuru replied to Con/Drv EE's topic in Allen Bradley / Rockwell Automation
You can disconnect the HMI but you won't have any HMI operator control over the process while it's disconnected. Allen Bradley controllers tend to like only Allen Bradley comm devices. You'd have a lot better luck with 1784-U2DHP adapter if you can find one. If you have to buy one, brace yourself because they're quite expensive. You'll have to set up a driver for it in RSLinx Classic. The only auto-configuring driver I know of in RSLinx classic is a straight USB cable, like what you'd use to go from the laptop to a ControlLogix L7 or L8 controller. You might be able to configure an RS232 driver in RSLinx Classic for the cable you have, but I don't think it's going to auto-configure. You'll have to check in your laptop's Device Manager to what port it's assigned the USB end to, then in Linx you'll have to match that port, set baud rate, parity, stop bits, etc. I usually set the port number, raise the baud rate to as high as it'll go, and choose 1770...Scanport as the Device, and leave everything else alone. This works for most USB adaptors but in my experience, only temporarily. If you can get third party adapters to connect at all, they tend to drop off after a few minutes. Hope this helps. -
ElectronGuru started following Control Flash Plus 3.01
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Control Flash Plus 3.01
ElectronGuru replied to olara's topic in Allen Bradley / Rockwell Automation
All ControlFlash Plus revisions 5.0 and below are sunset and therefore can't be downloaded from Rockwell. I don't of anyone who's successfully convinced Rockwell to unlock a sunset software. Do you have a higher version that doesn't have the tool you need? Have you tried the latest (V6.3) update? -
Powerflex 40 Firmware update
ElectronGuru replied to Shomation's topic in Allen Bradley / Rockwell Automation
Go to Rockwell's Product Compatibility and Download Center (PCDC) website here: https://compatibility.rockwellautomation.com/Pages/MultiProductSelector.aspx?crumb=111 Type "ControlFlash Plus" in the search box and chose the latest revision, and it will populate in the right-side box. Click on the down arrow below the "Download" box. This will prompt you to log in or create a user account. Anyone can create a user account and download ControlFlash and firmware. Once you're logged in, click the down button again, select the software, download and install it. Once installed, open ControlFlash Plus, scan the network with the hardware you want to flash, select the hardware and firmware revision you to flash to, and follow the prompts. IMPORTANT! Do not remove power, network connection, or otherwise interfere with the flash process once it's begun. Interrupting a firmware flash will irreversibly damage your hardware.