Greenheck, Building Value in Air
Hi, I'm Mark Schultz, Application Engineer with Greenheck.
Today we're going to go over startup on our Vektor System Control.
I'll show you some tips on maximizing your performance and troubleshooting.
I've set up a two fan system here, so we've got two VFDs.
We've already verified our wiring.
Our duct is open and ready for service.
So, when I'm ready here, I'm going to fire up these VFDs.
With a two fan system
I'm going to have to do one extra step.
I do have to address VFD number two, from one to two.
This is a very simple step I'll show you right now.
Just go into your Quick Menu
Hit OK, at My Personal Menu, scroll to 8 - 31.
That's going to be your addressing.
Hit OK?
And we're going to change this from one
to two.
Hit, OK.
Then we can just hit the Status
to take us back to our menu.
Now we're going to move over to the control box.
I'm going to apply power, bring up our PLC
and I'll show you how to adjust your static pressure.
The factory default on your static pressure is always going to be one inch.
So we're going to need to adjust that to whatever your system requirements are.
From our Main Menu.
We can go ahead and hit the program key.
I want to log into the unit,
so just arrow down.
When I log in, it is going to ask me for a password.
Password is going to be 9998
This will be our Service Level password.
Now we'll just arrow down to Test and Balance
and this is where we're going to make our static pressure adjustment.
You'll notice my static pressure right now, set.
I'm going to change it to two inches.
So go ahead and hit enter,
two inches.
I'm going to hit enter.
My static pressure is set.
One of the things we can also do when you're doing test and balances,
you can determine where your steady state for your fan run is going to be.
This will help us go back in later to maximize your performance.
Once you've determined
where your lowest requirement is and your highest requirement is,
we can go ahead and go into Test and Balance again,
arrow down and you're going to see a Fan Start,
a Min Fan percent and a Max Fan percentage.
We can now get our fan start to be set wherever your steady state
run is going to be.
Your minimum should be set 10% below
your lowest requirement
and your maximum should be set 10% above your highest requirement for running.
Now, remember, these are percentages, not Hertz.
Occasionally we'll get some calls on system alarms.
One of the more frequent ones is going to be
when the VFD gets set in Hand Mode instead of Auto Mode.
What will happen is your PLC will alarm out.
I can go ahead and hit the alarm on there.
It'll tell me VFD2 not in auto mode.
So this is a real easy one to clear.
We come back to the VFD just needs to be put back into auto mode.
That should clear that one.
If the VFD gets set off or for some reason the disconnect gets turned off
on the VFD again.
You're seeing my alarm here.
It’s telling me the VFD not in auto mode
so I can go ahead and clear that alarm
just by resetting into auto mode.
Another common alarm we get
is when power is disconnected from the pressure transducer,
or static is not being registered by the pressure transducer.
That alarm would also show up on here, on my PLC.
When that alarm comes up, it won't be able to clear itself.
I'm going to have to go in and clear that alarm once I've restored power,
I can then go in and clear this alarm.
So right now my alarm is telling me I have a Pressure Probe alarm.
I'm going to go ahead and fix that.
I can see here, I do not have a reading, so I'm going to take off the faceplate.
I'm going to check my connection here, and check my connection here.
That was loose
I'm now seeing the illumination I want to see.
Put the cover back on.
You can always refer to your wiring diagrams to verify all these.
Check your static pressure probe, but this should clear that alarm.
Now that I've reconnected my pressure transducer
I have to go in and clear this alarm.
All you need to do is arrow down in your alarm screen.
Hold this for 3 seconds.
One, two, three.
That's should clear our alarm.
No alarms.
I'm back in business.
The Vektor System Control is also BACnet compatible.
There's other system overrides and alarms that can be tied in.
All those details can be found in your IOM.
You can always contact your Greenheck representative for more information
or go to Greenheck.com.
As always, make it a great day with Greenheck.