Effective interface relay module for High-Risk Applications
Reliable interface relay module Styles for Industrial and Industrial Applications
CHINA – ?¡ãAny Electronics?¡À proudly presents their whole variety of interface relay module . They offer a comprehensive set of interface relay module items along with other interrelated goods. These units are noticed in various applications for example industrial applications, industrial handle circuits in addition to OEM Panels. These devices come with outstanding precision and repeatability. The standard interface relay module that are developed nowadays need incredibly small panel space.
network interface module
interface ford constant control relay module
interface constant control relay module
SainSmart 8-Channel 5V Solid State Relay Module Board for Arduino Uno Duemilanove MEGA2560 MEGA1280 ARM DSP PIC
Specifications SSR Output (each channel) Load voltage range: 75 to 264VAC (50/60Hz). Load current: 0. 1 to 2 AMP. Power supply 5VDC / 160mA (all channel ON). Input control signal voltage: 0V - 0. 5V Low stage (SSR is OFF) 0. 5V - 2. 5V (unknown state). 2. 5V - 20V High state (SSR is ON). SSR Spec. Manufacturer: OMRON Part number: G3MB-202P, 5V version. Isolation: Phototriac. Zero cross: Yes. Rated output load: 2A at 100 to 240VAC. (50/60Hz). Load type: General purpose.
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The problem involves a windshield wiper switch system. The selector switch has settings high, low, multiple intermittent and off. The switch provides input to an electronic module that operates the wipers via a couple relays. The switch has two inputs to the module and a return. The two inputs, I'll call PW and BR, use resistance levels to interface to the module. The PW input is specified as follows: High: 0 ohms Low: 4.4k Intermittent: 11.3k Off: 44k The BR input selects intermittent interval. (Not part of issue) The problem was that the wipers would only turn on High. Any other position and the wipers would stop. I discovered the problem when I disconnected PW from the switch and then connected a rheostat as the input to the module. As expected when rheostat at 0 ohms the wipers activate on High. Slowly turning the rheostat cause the wipers to shift to Low but at ~500ohms (not 4.4k), intermittent at ~1500 ohms ( not 11.3k) and then off at ~5k ohms (not 44k). When intermittent selected, all levels function properly hence no issue BR input. I tested resistance of the PW wiring from switch to module and all ok. Something is causing the module to trigger on the PW input at approximately 1/8th of the designed levels. First question, assuming the module is not defective (I already swapped), what could cause the module to behave as such? Could improper input voltages (etc) be at fault? Second and most interesting for me is if there was a simple circuit that could 1/8th the switch resistance thereby working around the issue. Parallel resistors to reduce won't work and that exhausts my electronic abilities. Thanks!
And got the following answer:
POSSIBLE FAILURE...  Voltage level could be too low if it used voltage control, rusty junction somewhere in the circuit.  Defective selector module. Since you made it works at 500 ohm and 5K, why not make your own selector module with these resistance value to force it works . Or a 5K potentiometer could be used.
The interface relay module perform very effectively with different applications that happen to be certain to power distribution and protection. The relays include wide adjustment ranges using a scale that’s easy to read either in three or four digits in line with the model. These interface relay module help in rising the flexibility of your applications, decrease the all round power and maintenance charges. You’ll find relays that are utilized for general purposes which are available in trustworthy styles with swift replacement selections. And there are models which are made use of for industrial applications and heavier duty applications that function on huge loads. These merchandise are created to meet the lifetime industrial handle requires in the applications.
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