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  1. R

    Radar level transmitter problem

    I recently had similar issues with a creosote bunker c mix tank that was boiling off water. The transmitter would report the level just fine, but randomly lost the echo. After several inspections and tests I adjusted the near range out to 2 feet, and the problems went away. Siemens support is...
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    Siemens LR250 l.o.e. in Steam Environment

    Using LR250 to measure levels in tanks, but periodically loosing echo, shows as l.o.e. on unit display, and signal goes high, to trigger alarm. Are there any settings for helping the LR250 cut through the steam? I read about the confidence and threshold settings, but I don't think I...
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    Sinamics v20 f2 Fault (Overvoltage) While Running

    F2 fault shows up while drive is running at either half or full speed, not during ramping action. I will change deceleration time to higher value. System voltage is 480v, 3 phase. I have observed the DC bus to rise up to 780v, corresponding increase on AC bus, though another v20 shows no...
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    Sinamics v20 f2 Fault (Overvoltage) While Running

    Using v20 to run small fan (1/2 HP) using two speeds, 50% and 100%. After sometime, more than 2 hrs, drive will fault with f2 error. It will switch speeds fine, ramp up and down is 10 seconds as default in application macro. I'm not using any braking resistor, is it necessary for fan...
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    Alternative Way to Ground a Delta System

    > Is there a way to detect a ground fault on a Delta system > without the use of an ZIGZAG transformer? Good discussion here: http://electronics.stackexchange.com/questions/107059/3-phase-voltage-ok-indicating-lights
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    DC Speed Control

    I know this is probably very elementary, but it is a problem for me.... I have a DC motor, controlled via electronic speed control. There are two physical relays for forward/reverse, and a potentiometer for speed variance. My problem is that about half the time, pressing forward or reverse...
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    Old Keyboard Laptop for USB

    I don't know of any type of converter plug off-hand. Laptop connectors are typically specific to brand/model. This is the keyboard from the laptop, so I would suggest plugging in a standard USB keyboard, and leaving the old keyboard plugged in, unless your BIOS can be reconfigured to ignore...
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    CSA for Canada in Turbine Fuel Shutoff Applications

    As an electrician, I would look to the code book, specifically hazardous locations, as you have. I would hazard (no pun intended) that a valve that meets the hazardous location requirements should be well documented by the manufacturer, and they should be able to answer and verify what other...
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    How to calculate cable size, M.T.S and MDP

    cable sizing is based on ampacity matched to your gen's FLA and applicable electrical code. Don't know what MTS and MDP mean, sorry.
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    ClearSCADA and ViewX

    Hi all, just started a relatively simple (I think!) project. I am designing screens for 4 sumps and pumps, 2 flares and some leachate tanks. I have a fairly good handle on making the screens, but where I get stuck is on the whole Tags and Points issue. I read through...
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