WARNING ALWAYS DISCONNECT YOUR TURNTABLE FROM THE MAINS WHEN OPENING OR WORKING INSIDE THE TURNTABLE. This is part one in a 2 part video showing you how to calibrate the pitch on a Technics…
A engineer wants to put in writing a PLC program to regulate a water pump pushed by an electrical motor. This water pump might be manually began and stopped by pushbutton switches, and shut down mechanically by any one in every of a number of “permissive” switches. The working statuses of those switches are listed right here:
- Begin pushbutton (normally-open): open when unpressed, closed when pressed
- Cease pushbutton (normally-open): open when unpressed, closed when pressed
- Low water stage (normally-closed): closed when degree is low, open when degree is sufficient
- Low oil strain (normally-open): open when strain is low, closed when strain is enough
- Excessive vibration (normally-closed): closed when nonetheless, open when vibrating
- Water leak detector (normally-open): open when dry, closed when moist (leak detected)
The engineer’s first try is proven right here, however it accommodates a critical error. Determine and proper this error:
The Stop_PB contact instruction needs to be drawn as normally-closed relatively than normally-open as proven within the engineer’s first draft of the PLC program. This system is designed to close down the motor when that pushbutton is pressed (i.e. the Stop_PB contact instruction turns into uncolored (i.e. fails to “conduct” digital energy).
We now have been informed that the real-world Cease pushbutton change is NO, which implies its contact closes when pressed. This implies urgent the Cease pushbutton causes that bit to be 1, which necessitates an NC contact instruction so that it’s going to un-color beneath that situation.
This tech talk is about more 4k features and Ryan walks you thru a compass calibration. Note a compass calibration is not needed on the Typhoon 4K straight out of the box, its been pre calibrated…
A engineer wants to jot down a program for an Allen-Bradley CompactLogix PLC to regulate a strain relieving solenoid valve in a fuel processing system. A pair of high-pressure management switches alerts the PLC when to open the solenoid valve: one telling the PLC to open the valve after a Three-second time delay and the opposite (referred to as the “high-high” swap, with a better journey setting) telling the PLC to open the valve instantly.
A pushbutton change serves as a guide override to open the solenoid valve instantly when pressed. In all circumstances, the solenoid vent valve will stay open (energized) till stress falls under the setting of a low-pressure fuel change. The working statuses of those switches are listed right here:
- Override pushbutton (normally-open): open when unpressed, closed when pressed
- Low fuel strain (normally-closed): closed when stress is lower than 10 PSI, open when strain exceeds 10 PSI
- Excessive gasoline strain (normally-closed): closed when stress is lower than 30 PSI, open when strain exceeds 30 PSI
- Excessive-high fuel stress (normally-open): open when stress is lower than 40 PSI, closed when stress exceeds 40 PSI
The engineer’s first try is proven right here, but it surely incorporates a critical error. Establish and proper this error:
The Excessive strain contact instruction ought to be drawn as normally-closed fairly than normally-open as proven within the engineer’s first draft of the PLC program. This explicit swap indicators a high-pressure situation by opening its contacts, for the reason that real-world swap is normally-closed (NC).
We wish the Three-second timer to start timing when this swap senses a excessive stress, and so we want the contact instruction to paint when the real-world high-pressure change journeys (opens). A PLC contact instruction that colours when it senses a “zero” bit situation is a normally-closed (NC) instruction.
DJI adheres to continuous innovation and improvement. With the new firmware, new attitude stabilization algorithm and optimized hardware structure, the Naza-M V2 provides better flight performance….
This fluid diagram exhibits the parts and connections of a Bettis self-contained hydraulic module used to robotically shut off a “line valve” on a pure gasoline pipeline within the occasion of the pipeline strain going outdoors of its limits (both falling under the low-pressure restrict or rising above the high-pressure restrict):
Establish all spool valve positions, and in addition hint the course of oil circulate, following a solenoid “journey” occasion.
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Suppose this valve management system has an issue. The management valve (LV-104) doesn’t transfer to the full-open place because it ought to when the solenoid is de-energized, though it’s going to transfer when the Four-20 mA present sign to the I/P transducer is diverse whereas the solenoid is energized:
Establish the probability of every specified fault for this circuit. Think about every fault one by one (i.e. no coincidental faults), figuring out whether or not or not every fault might independently account for all measurements and signs on this circuit.
This demonstration video will guide you through the initial calibration process. In less than five minutes, Spyder5 calibrates your monitor to an industry color reference standard to ensure…
In this video I show you how to calibrate the temperature of your oven so it matches the display. Sometimes your new oven may have a temperature that’s slightly off from what you set it at….