fb-3 relay board setup

[pachistano]

hi everybody,
i have a fb-3 relay board and i want to connect to the 220V power.
i'm not an expert, so my questions:
- i have 3 holes each side, why 3 and not 2? to which of them i'm supposed to put the voltage?
- can i plug 220V power or the iobridge will explode? :p
- i rod somewhere that to the 3rd hole i can plug a sensor.. is this right? however, analog or digital?
- last question: i set up a new I/O on my interface. how can i manage the power switch? digital input or digital output?

i'm confused, i know, but the documentation is very poor at the moment and i'm trying to learn something.

[iobridge]

Please be careful using high voltage.

Have you found the Wiki? Here is the page about the relay board, the schmatic of the pinouts, and the relay spec sheets.

http://www.iobridge.net/wiki/function-boards/dpdt-relay-board

The screw terminals are for the relay, the white header can be used for digital and analog inputs.

To control a relay from the interface is a digital output control widget. This will give you an on/off button. When you click On the relay will close, and Off the relay opens. There are limits to the amount of current you can pass through the relay.

[pachistano]

ok and thanks for the fast reply,
first of all, i think it is better to connect to a 5v device.
i found the wiki but is more techinical than my experience on this environment, and i cannot understand some things.
once i'm at home (when??? i want to come back home!!!), i will try to use this and come back to ask everyone my problems.


bye,
fabio

[iobridge]

You got it, let us all know how we can help. Good luck and have fun. We'll call you Fab-IO.

[pachistano]

You got it, let us all know how we can help. Good luck and have fun. We'll call you Fab-IO.

hello,
i'm back... I tried to connect my pc power supply  to the iobridge to control a fan...
this is my schema

                      power- cables - iobridge-cables- fan

                              ---black---            ----b----
           power         ---yellow--    FB-3 ---y----        fan
            supply        ---red------            ----r-----



i want to switch on/off the fan from my iobridge

when i switch on the iobridge, the power supply stops working

note: the power supply is modified to stay always on

i tested my schema without the iobridge module and the fan works as expected

as told, I'm a newbye

Fab-IO

[jason]

On the relay board, there are two screw terminals with 3 positions.  Wire the fan to use the "C" and "NO" connections (on the same side).  This will cause the fan to come on when the digit is set to "ON"

If the relay is clicking on when you apply power, before you actually click the widget, then either:

1) you have the fail-safe for the digital output enabled and set to turn ON when there is a network disconnect

2) The digital output was already ON.  (The IO-204 remembers the last state everything was in when the power goes off).

Or

3) The channel is in a smart mode instead of I/O mode. 

[texasclodhopper]

Just in case someone doesn't know:

"C" = common terminal of the relay/switch
"NO" = normally open contact
"NC" = normally closed contact
"normally" = the nonpowered state of the relay

The contact used is wired between the "C" and either "NO" or "NC".

[zero*gx]

Another piece of info for the relay board:

The maximum voltage/current for the relay are:

no more than a 5 amp draw.
or
no more than 60watts.

Whichever is lower.

Watts are calculated using: (amps) * (voltage) = (watts)

[noelportugal]

no more than 60watts.

@zerogx I think you mean  600watts 

(amps) * (voltage) = (watts)

5 * 120 = 600

[zero*gx]

it would be... assuming it could handle 120v.

The math is correct, assuming my understanding of the datasheet is correct. (i had it checked by someone else as well.)

again, assuming my knowledge is correct, you could switch 120v @ .5 amps (500 mA) with the wattage rule. The 5 amp limit is assuming 12v.