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HelicopterFlybarless Rotor Head SystemsbavarianDEMON › HC3-SX: Physical Wiring Help, Please
01-01-2011 09:11 PM  6 years agoPost 1
cyclicopath

rrNovice

Lost Coast, CA USA

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Hi & Happy New Year,

I need some help with the physical connections for the HC3-SX. I'm sorry, but working all alone here in the wilds and even with the manual, software and the video on HC's site, and even though I've been flying the excellent HC-A for over a year, I'm still unclear on exactly how to wire everything up. Really helpful would be some FULL diagrams that don't show just wires going into the HC unit, but also show exactly how receivers, power supplies and servos fit into the picture. It may well just be me, but the manual reads as though written for someone already familiar with the setup, and uses some terminology unfamiliar to me (I think a translation issue). The video never gives a closeup of the layout (plenty of the narrator's face, though, LOL).

Here's what's on my new Align 700E F3C (which will be flown as both a sport and photo ship). Currently all the wires are danging loose:

The HC3-SX (for both head and tail);

A JR 2112 12-Channel receiver and (up to) 3 JR satellite receivers;

A Gemini redundant regulated power supply (two batteries, two 5.9 volt and one 5.3 volt output lines);

Stock Align servos.

My transmitter is a JR 12X.

Failing anyone having or making such a diagram, here are some questions:

1. I think I'm correct in understanding that the HC can be used either together with a normal receiver or by itself with only "satellite" receivers plugged into it?

2. I presume that a reason for using a regular receiver is to have more channels available for auxiliary use than using just the HC & satellites. The HC will leave unused channels on the regular receiver available, correct? Are there other reasons to use or not use a regular receiver?

3. The JR receiver accepts up to 3 satellites and I'd like to use that many if possible (paranoia!). I presume satellites are to be plugged into the regular receiver when a regular receiver is used, not into the HC, correct?

4. The manual insists that power be supplied directly to the HC. I wish to maintain the complete power-supply redundancy of the Gemini system both for the receiver and the HC. Should I use two "Y" connections and feed power into both battery input ports of the receiver and into two input points on the HC (I think the "Head 4" and the programming ports)? I think if I have the two inputs going into the HC, that itself would insure redundant power to the receiver; however, I might have a fair load sometimes on the receiver aux. channels, so would the direct connections to the receiver thus be advisable?

5. The manual talks about a single-wire "sum.-PWM-signal". I have no idea what that is. Do I need to know?

Thanks in advance for help with this. Once set up I'll post photos of the whole ball of worms to make it easier for the next guy.

Nice mellow high-tech paddling around is my favorite thing to do!

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01-01-2011 09:26 PM  6 years agoPost 2
Heli 770

rrProfessor

USA.

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PWM = Pulse Width Modulation or Switching Rate, like in KHz.

Edit: Today is not a good day for doing this, For me anyway.

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01-02-2011 01:50 AM  6 years agoPost 3
F1 Rocket

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Melbourne, Florida ​USA

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PM sent

Danny

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01-02-2011 03:21 AM  6 years agoPost 4
GetToDaChopper

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Las Vegas , NV

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well a pm to him dosn't help the rest of us ? i was waiting for a hole bunch of answers......

    ▲
  ▲ ▲
▲ ▲ ▲ One of a Kind !!!

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01-02-2011 03:47 AM  6 years agoPost 5
okcheliflyer

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Oklahoma City, OK

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I too have exactly the same setup except with 4 head servos. Was hoping for the solution from the HC team. Danny can you shoot me an email too!

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01-02-2011 03:59 AM  6 years agoPost 6
F1 Rocket

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Melbourne, Florida ​USA

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Failing anyone having or making such a diagram, here are some questions:
1. I think I'm correct in understanding that the HC can be used either together with a normal receiver or by itself with only "satellite" receivers plugged into it?
You are correct
2. I presume that a reason for using a regular receiver is to have more channels available for auxiliary use than using just the HC & satellites. The HC will leave unused channels on the regular receiver available, correct? Are there other reasons to use or not use a regular receiver?
The primary advantage to using the satellites is it cuts down on the amount of wires running around your machine. In your case the use of an external receiver is needed anyway due to the amount of additional channels you require for your AP work.
3. The JR receiver accepts up to 3 satellites and I'd like to use that many if possible (paranoia!). I presume satellites are to be plugged into the regular receiver when a regular receiver is used, not into the HC, correct?
You are correct
4. The manual insists that power be supplied directly to the HC. I wish to maintain the complete power-supply redundancy of the Gemini system both for the receiver and the HC. Should I use two "Y" connections and feed power into both battery input ports of the receiver and into two input points on the HC (I think the "Head 4" and the programming ports)? I think if I have the two inputs going into the HC, that itself would insure redundant power to the receiver; however, I might have a fair load sometimes on the receiver aux. channels, so would the direct connections to the receiver thus be advisable?
Power is carried between the HC3-SX and the receiver via the aileron and elevator leads in the supplied interconnect cable. With the power supply you plan on using you can plug one output into the HC3-SX in the Head Servo 4 slot and the other into any open slot in your receiver.
5. The manual talks about a single-wire "sum.-PWM-signal". I have no idea what that is. Do I need to know?
Not really as it is not used with the radio systems common in the USA.
For your application using an external receiver you will set the HC3-sx to “Channels” in the RC tab of the software.

Feel free to contact me at the number supplied in the PM I sent earlier if you need any help with this.

Danny

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01-02-2011 04:08 AM  6 years agoPost 7
okcheliflyer

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Oklahoma City, OK

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Danny,
On my setup with the 4th head servo being used, can I just plug my 2 batteries into the receiver?
David

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01-02-2011 04:23 AM  6 years agoPost 8
F1 Rocket

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Melbourne, Florida ​USA

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On my setup with the 4th head servo being used, can I just plug my 2 batteries into the receiver?
It is recommended that input power go direct to the HC. You can use a Y-connector on any of the servo outputs from the HC3-SX to run power when using all 4 head servo slots.

Danny

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01-02-2011 04:47 AM  6 years agoPost 9
okcheliflyer

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Oklahoma City, OK

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Danny,
So With the Y harness plugged into the HC3 4th head servo port, one end of the Y will plug into the 4 th head servo, the other to one of the 2 leads from the Gemini. The other lead from the Gemini plugs in to the receiver batt port, right?
David

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01-02-2011 04:54 AM  6 years agoPost 10
F1 Rocket

rrKey Veteran

Melbourne, Florida ​USA

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So With the Y harness plugged into the HC3 4th head servo port, one end of the Y will plug into the 4 th head servo, the other to one of the 2 leads from the Gemini. The other lead from the Gemini plugs in to the receiver batt port, right?
Right

Danny

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01-02-2011 07:52 AM  6 years agoPost 11
cyclicopath

rrNovice

Lost Coast, CA USA

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Danny,
So With the Y harness plugged into the HC3 4th head servo port, one end of the Y will plug into the 4 th head servo, the other to one of the 2 leads from the Gemini. The other lead from the Gemini plugs in to the receiver batt port, right?
David
I think there's maybe a bit of a theoretical catch to doing it that way. Remember, the point of the Gemini is to have two completely separate power supplies running - two batteries, two regulators (in the same housing) two sets of wires, two switches. So true redundancy. Now, as we know HC wants you to power the HC3-SX directly, not from the receiver. Which means that if you power the HC directly with one circuit from the Gemini and run the other one to the receiver, and the circuit to the HC fails, the HC will then be powered by the remaining circuit, through the receiver. Therefore, to maintain true redundancy and avoid that possibility I think requires a "Y" on each of the Gemini's leads. So you end up with four "hot" plugs. Then you can have power from both Gemini circuits going to both devices. I gather from Danny that if there aren't open ports available you can power up the HC via yet more "Y"s to any of the servo ports.

I wonder if once the HC is powered redundantly it is really necessary to run more power directly into the receiver. I would think maybe not if there is nothing but the HC connected to the receiver. But in my case I'm using a 12-channel receiver and don't know yet what sort of loads I might feed through the receiver to additional devices, so I'm going to wire it that way (unless someone sees a reason not to...). Probably paranoid overkill, but being a fire department safety officer does things like that to your mind... javascript:smilie(''

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01-07-2011 10:36 PM  6 years agoPost 12
robve

rrNovice

Rimforsa, Sweden

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HC3-SX: Physical Wiring Help, Please

Hi,

I have the same trouble. However, I found this in the manual:
=============================================================
Please note when connecting
• As high servo currents can occur, a voltage supply must be routed directly to the device!
Also, the receiver must be supplied via the FBL system, not vice versa.
Use one of the following possibilities for the connection:
a) Battery connection / head 4 (in case no 4th head servo is used).
b) Programming connection (in case the PC adaptor is not connected. For programming the supply via receiver is ok).
c) In case a PWM receiver is used, the supply can be connected to the gas output. If used, a BEC controller is
connected here anyway.
d) In case of supply from a BEC controller, route a parallel supply cable (e.g. Y cable) to either battery or programming connection
of the FBL system. This connection must not possess a signal line, i.e. the third pole may have to be interrupted.
=============================================================

I will go for option b), use a +/-(patch)cable between an empty channel in the receiver and the "programming connector on the HC3-SX. This will give three power supplies (ail+elev+add. patch cable) through the HC3 to feed five hungry servos (4 swash, 1 tail). Important: On the +/- patch cable, strip away the signal (pulse) lead.

Best regards,

Robert from snowy Sweden


_______________
Robert
[color=blue][b]Team Hirobo[/b][/color]
Bergs slussar
Sweden

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