MR-BUSIO-RELAY Gravitech

TM MR-BusIO-RELAY BusIO Relay BOARD User Manual GRAVITECH.US uResearch GRAVITECH GROUP Copyright 2007 MicroResearch GRAVITECH GROUP WWW.GRAVITECH.US TM MR-BusIO-RELAY BusIO Relay BOARD User Manual Description The MR-BusIO-RELAY is an experiment board for switching AC or DC output by using mechanical relay. The maximum controlling voltage is 250VAC at 5A or 24VDC at 10A. It is using PC817 Photo- coupler IC to isolate high current and low current. It is best for switching output load. The board can be use with MR-BusIO- MAIN board or stand-alone. PCB size is 0.63 x 2.80 Operation: MR-BusIO-MAIN The PC817 require at least 5mA to drive input photo-coupler LED. It can take up to The MR-BusIO-MAIN is available for 6V in reverse bias. For an output purchase via our website. If you dont see (between collector and emitter), it can the item you need, please contract our drive up to 35V with 50mA continuous sales department at sales gravitech.us current. MR-BusIO-MAIN The operation of this board starts when Experiment board which receives output applying logic HIGH to an I/O pin. The signals from any microcontrollers. The signals then distribute to daughter boards indicator LED then illuminated. The output for each experiment. It designed to of PC817 is driving second BC547 connect directly with 10PIN MRconnect. transistor which drive to energize the coil It is a quick and easy way to control up to of the relay. The diode across the coil is to 8 daughter boards. protect back EMF. User can connect DC or AC load through output 3-PIN terminal block. It connected directly from the relay: pin1 NO (Normally Open), pin2 COM (Common), and pin3 NC (Normally Close). User can connect output AC of DC load up to 250VAC at 5A or 24VDC at 10A. Copyright 2007 MicroResearch GRAVITECH GROUP WWW.GRAVITECH.US