PLUS+1 User Forum

PLUS+1™ Hardware => Controllers => Topic started by: oiltronic on October 01, 2011, 02:15:21 AM

Title: MC050 PVG Power output limits
Post by: oiltronic on October 01, 2011, 02:15:21 AM
Can I use one MC050-010 PVG Power pin (p34-36) to power more than 3 PVEA coils, say, 5?  The controller output pin is rated 3A while the PVEA coils draw only 0.17A.
Title: Re: MC050 PVG Power output limits
Post by: Stefan on October 14, 2011, 04:23:32 PM
Yes, since these are Digital outputs.

It's not possible with PWM outputs.

Best regards
Stefan Arvidsson
Title: Re: MC050 PVG Power output limits
Post by: Marbek_Elektronik on September 02, 2012, 09:53:29 AM
But whats about driving PVEH at voltages at 10V (machine starting for example)?
At 24V you have 0,3A, at 12V: 0,57A, at 10V: 0,7A (10Watt) !
Now, if you drive 5 PVEHs, the current will be 3,5A, which is to big!

I think, you must not drive more then 4 PVEHs on a digital output PIN.
PVEA will be no problem because of lower current.

Is this OK?
Title: Re: MC050 PVG Power output limits
Post by: Quax76 on September 03, 2012, 08:34:31 AM
I think this should not be a problem because you only power on the PVE when a valve is actuated.
How great is the likelihood, that you use 5 valves at the starting of the machine?
Title: Re: MC050 PVG Power output limits
Post by: Marbek_Elektronik on September 11, 2012, 08:55:55 AM
It is not only by starting a machine.
Perhaps there are several switches between Batterie and controller, or long cables.
I have seen a lot of this in practice.
So, if you use outputs, which are combined, I think, 3 PVEHs are enough.
Title: Re: MC050 PVG Power output limits
Post by: Marbek_Elektronik on September 11, 2012, 09:01:59 AM
By using paired outputs, the maximum current at 70°C (in the box!) is 4A for both!
One output can only drive 2A.
If you have 3 PVEs, it is 0,7A/PVE!