MarkoTica+1 Posted April 7, 2020 Report Share Posted April 7, 2020 Dear Unitronics members, is it possible to use together expansion modul I0-R08 with power supply 24VDC and M91-2-R1 PLC with power supply 12VDC? Is there any conflict, can it cause damage?Please help me. Best regards MarkoTica Quote Link to comment Share on other sites More sharing options...
MVP 2021 kratmel Posted April 7, 2020 MVP 2021 Report Share Posted April 7, 2020 Hi, As decleared in https://unitronicsplc.com/wp-content/uploads/2015/12/IO-RO8_L-5408-0051-9.pdf I0-R08 has 12VDC option ----- I0-R08L. The main issue with expansion = P-ON condition. Both - PLC controller and EX-A1+IO-R08 IO must be powered from the same power supply. By the way if you power M91-2-R1 and EX-A1+I0-R08L from 12V 1. Both the OPLC and the EX-A1 must be connected to the same power supply. The EX-A1 and the OPLC must be turned on and off simultaneously. 2. The 12VDC power supply is supported by versions V2.00 (EX-A1) and later. As for me you can power M91-2-R1 PLC with power supply 12VDC and only galvanic isolated version EX-A2X+IO-R08 from separate 24VDC but you must turn ON both PLC and IO at the same time. Quote Link to comment Share on other sites More sharing options...
MarkoTica+1 Posted April 9, 2020 Author Report Share Posted April 9, 2020 Than you , this article helps me. Best wishes Marko Tica Quote Link to comment Share on other sites More sharing options...
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