flight dek 180 operation

felixgarciamotta

New Member
Joined
Jan 13, 2011
Messages
10
Hello I am experiencing dificulties with the operation of flight dek 180, it works perfeect with the internal battery but when you activate the airplane master switch either in attery or alternator position the instrument gets crazy
 

dynonsupport

Dynon Technical Support
Staff member
Joined
Mar 23, 2005
Messages
13,226
What on the display goes "crazy"? Can you provide a more detailed explanation of what you are seeing?
 

felixgarciamotta

New Member
Joined
Jan 13, 2011
Messages
10
Sure.It's installed in my 172M, by an electronic technichian here in Bogota Colombia. Everything goes fine if you only use the internal battery. When I say "crazy" I mean that the EGT CHT MAP Fuel flow, except RPM start to go erratic measures varying in the case of MAP from 15 to 35 inches Hg; in the case of EGT varyng from -99 to 500 and EGT the same. We have cheked The instrument grounding, and all the parameters you put in the installation look correct, a proof of that is that when you only use the internal battery everything goes fine, but of course, you can't do that all the time because you get without radios, transponder charging batteries etc. I hope you can stand with my english. Thanks, awaiting your help.

Felix Garcia


Thanks


Felix Garcia
 

dynonsupport

Dynon Technical Support
Staff member
Joined
Mar 23, 2005
Messages
13,226
When all of those EMS parameters are fluctuating, it's usually caused by voltage being injected into a pin that shouldn't be receiving it. Since you can correlate it to switching on the master switch, there's probably 12V coming into one of the D180's pins from somewhere, perhaps even the D180's own 12V power supply (nominally used for fuel flow). So you might start by tracing where the EMS's 12V output line is going.
 

felixgarciamotta

New Member
Joined
Jan 13, 2011
Messages
10
ok we decided to disconnect each of the sensors at a time. After a lot of tests we discovered that the connections to the old analog fuel displays of the aircraft is what was causing the missoperation of the unit. So at the moment the dek's wires are disonnected from the analog displays and the Dek is operating correctly except the oil temperature which dials nothing. The oil temperature wire from the Dek is connected in parallel to the original oil wire that send signal to the old temperature analog sensor of the plane. Awaiting your comments. Thanks.

Felix Garcia
 

dynonsupport

Dynon Technical Support
Staff member
Joined
Mar 23, 2005
Messages
13,226
You cannot have sensors hooked to the D180 and another gauge at the same time. This will cause the behavior you have seen. You must hook the sensor to only one display. If you wish to have two displays, you have to install a second sensor.

The problem is that all gauges power the sensors they are hooked two, so if you have two gauges then you have twice the power and this causes problems.
 

felixgarciamotta

New Member
Joined
Jan 13, 2011
Messages
10
In other words what you're telling is that I have to cancel the old analog oil temperature and both left and right fuek level sensors of the plane for the Dek to operate full?. In the case of the old resistor fuel meters I was considering the posibility of buying the fuel gauge transmitter replacements. In the case of the oil temperature sensor the engine doesn't have another place to locate a separate oil temperature sensor. Your comments please. Thanks
 

dynonsupport

Dynon Technical Support
Staff member
Joined
Mar 23, 2005
Messages
13,226
Yes. Your fuel level senders and oil temperature sensors can not be connected to two instruments at once, since these parallel connections interfere with the ultimate voltage output of the sensors.

Incidentally, even if you could figure out a way to get everything reading correctly simultaneously, you'd have the reverse problem. Namely, the failure of EITHER instrument would cause the voltage output of the sensor to change, and then the remaining instrument would then read incorrectly. So what you think is redundancy (again, assuming you could get everything working when simultaneously connected, which you can't) isn't, but in fact adds an ADDITIONAL potential point of failure.

Unless you have an exotic manually controlled turbocharged engine that requires constant knob fiddling to keep it from exploding, one set of engine instruments is enough. If your engine instrument(s) fail, the engine keeps running, and the sound of engine tells you everything you need to know. Basically, engine instruments are rarely critical enough to warrant redundancy.
 

dynonsupport

Dynon Technical Support
Staff member
Joined
Mar 23, 2005
Messages
13,226
If you really wanted to preserve the other instruments, one thing you could do is have switches to toggle between your D180 and the analog instruments. They wouldn't work at the same time, but you could choose between them.
 

felixgarciamotta

New Member
Joined
Jan 13, 2011
Messages
10
You were absolutely right!, It works perfect!. By yhe way, the technician will install a switch to put the analog and digital instruments to work alternativelly. Thanks again.

Felix Garcia
 

felixgarciamotta

New Member
Joined
Jan 13, 2011
Messages
10
I appreciate if you have the numbers for the O320E2D engine temperature ranges. I know the red line is 245 degrees. It shows from 195 to 208 degress for cruising and goes up to 220 farenheit degrees for climbing. is it ok?. You know one is not used to numbers since the old analog instrment is just a green line. Thanks.
 

felixgarciamotta

New Member
Joined
Jan 13, 2011
Messages
10
Sir, this morning I turned my 180 on and the display only shows Blue and the Dynon 180 sign. I turned off master switch and stay on on the blue page I suppose until the internal battery goes off. I doesn't work!. What should I do considering the internal battery voltage and master volt is ok????????
please Help, I'm down in colombia. Thanks.

Is there a Way of resetting the instrument. ??



Felix Garcia
 

dynonsupport

Dynon Technical Support
Staff member
Joined
Mar 23, 2005
Messages
13,226
Try disconnecting all power, including the internal backup battery. Also make sure the keep alive isn't connected. It shouldn't be anymore. If after you reset power, it still doesn't work, send an email to support at dynonavionics dot com to set up a return authorization.
 

dynonsupport

Dynon Technical Support
Staff member
Joined
Mar 23, 2005
Messages
13,226
In a nutshell - Pin 2 on the vertical DB25 connector should have no power coming into it. See the Installation Manual - which can be downloaded from our site - for further information.
 

felixgarciamotta

New Member
Joined
Jan 13, 2011
Messages
10
I believe something goes wrong. I already disconnected the backup battery and the whole vertical 25 pin connector; I reconnected everything and now the blue display blinks permanently and when the plane master switch is on the deck 180 doesn't turn off; it just blinks. What I'm not sure of now is whether I have 2 amps and 10 volts minimum. Now what?

Thanks
 

dynonsupport

Dynon Technical Support
Staff member
Joined
Mar 23, 2005
Messages
13,226
Well, if you don't have enough power (when connected to a dead aircraft battery, for example), that can cause the unit to start to boot, draw current, drag down the voltage of the dead battery, and then restart. So please check that first. If the battery is charged, then it sounds like there might be a problem with the unit. In that case, call us at 425-402-0433 or email us at support at dynonavionics dot com.
 
Top