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Author Topic: jnior digital input Aleksandar Obradovic Expert Film Handler Posts: 125 From: Belgrade, Serbia Registered: Oct 2012 posted 02-11-2013 01:14 AM                     Hi guys, Can someone tell me can i use dry contacts from my fire alarm system to trigger jnior digital input (no voltage is present on the line)? BR Alexander  |  IP: Logged Marco Giustini Film God Posts: 2713 From: Reading, UK Registered: Nov 2007 posted 02-11-2013 01:23 PM                     get the + from the power supply of the Jnior itself, route it through your fire alarm relais and then into the Digital Input. Make sure your fire relais can cope with the voltage (9V? can't remember).  |  IP: Logged Aleksandar Obradovic Expert Film Handler Posts: 125 From: Belgrade, Serbia Registered: Oct 2012 posted 02-14-2013 02:15 PM                     Relays at fire protection system module are electrically separated (it is Notifier M 701 module) so there is no problem to use + from jnior power supply. I just didn't knew if it is possible to feed 12 VAC voltage to the DIN of jnior (i didn't found it in jnior documentation). Tnx for your help Macro  |  IP: Logged Marco Giustini Film God Posts: 2713 From: Reading, UK Registered: Nov 2007 posted 02-14-2013 02:23 PM                     the manual says 0-30V, with 2-30V considered "high". (getting started manual, Hardware Specifications)  |  IP: Logged Aleksandar Obradovic Expert Film Handler Posts: 125 From: Belgrade, Serbia Registered: Oct 2012 posted 02-14-2013 03:48 PM                     Tnx for info Marco. I tried with dry contacts but without success. Tomorrow in the morning i will try what you said and give you feedback here if it was successful so others can see this too.  |  IP: Logged Dave Macaulay Film God Posts: 2321 From: Toronto, Canada Registered: Apr 2001 posted 02-15-2013 03:12 PM                     The Jnior power supply is 12VDC, but the inputs only work with one voltage polarity. The DC connector on the Jnior has extra terminals to connect your new wires to. Connect the "-" power directly to the lower of the two Jnior input channel terminals. Connect "+" to your normally open/close for alarm fire relay contact and bring back the other relay contact to the upper terminal on the Jnior input channel. You can test polarity to be sure, when you activate an input its LED lights up.  |  IP: Logged Aleksandar Obradovic Expert Film Handler Posts: 125 From: Belgrade, Serbia Registered: Oct 2012 posted 02-21-2013 11:57 AM                     I solved this with one relay and 1k resistor to accommodate current to GPI of Doremi. It works fine and it is much faster then solution with jnior. tnx to all of you guys  |  IP: Logged

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