Running High voltage servo of BEC???
#1
Running High voltage servo of BEC???
Heres my setup
SCRT10, mamba max pro, novak 4.5 550 motor. Red and black power wires from Hitec 7940 servo plug directly into a lipo hump pack (yellow signal wire plugs into rx). Internal BEC on the esc plugs into the rx and powers the rx and transponder
I couldnt get my 7940 servo to run off my lipo rx pack - do i have to put the power from my lipo hump pack through a bec before it goes to the red and black servo wires?
SCRT10, mamba max pro, novak 4.5 550 motor. Red and black power wires from Hitec 7940 servo plug directly into a lipo hump pack (yellow signal wire plugs into rx). Internal BEC on the esc plugs into the rx and powers the rx and transponder
I couldnt get my 7940 servo to run off my lipo rx pack - do i have to put the power from my lipo hump pack through a bec before it goes to the red and black servo wires?
#3
Tech Champion
You need a ground wire between the receiver and servo, along with the signal wire, to complete the signal circuit.
Running a regulator on a 2s (I assume) lipo receiver pack with a high voltage servo kinda defeats the whole purpose doesn’t it?
Running a regulator on a 2s (I assume) lipo receiver pack with a high voltage servo kinda defeats the whole purpose doesn’t it?
#4
So you are saying I need the black ground wire to also go to the rx
question 1: If I do that do i also stilll have a black wire going to the ground on the lipo rx pack. i.e. the black wire from the servo splices and goes to both the rx(along with the signal) and to the lipo rx pack?
question 2: If I do connect the black ground to the rx do I run the risk of sending 7.4 volts to the rx? My original intent here is to have the rx be at 6.0v and have the servo be at lipo voltage (7.4-8.4)
This is my intent because my rx (futaba r603fs) cannot go above 6.0v
#5
what RX are you using??
#7
Tech Champion
Yes it does defeat the purpose thats why im hoping I dont have to run any regulator at all. I just could not figure out why my servo wasnt working at all.
So you are saying I need the black ground wire to also go to the rx
question 1: If I do that do i also stilll have a black wire going to the ground on the lipo rx pack. i.e. the black wire from the servo splices and goes to both the rx(along with the signal) and to the lipo rx pack?
question 2: If I do connect the black ground to the rx do I run the risk of sending 7.4 volts to the rx? My original intent here is to have the rx be at 6.0v and have the servo be at lipo voltage (7.4-8.4)
This is my intent because my rx (futaba r603fs) cannot go above 6.0v
So you are saying I need the black ground wire to also go to the rx
question 1: If I do that do i also stilll have a black wire going to the ground on the lipo rx pack. i.e. the black wire from the servo splices and goes to both the rx(along with the signal) and to the lipo rx pack?
question 2: If I do connect the black ground to the rx do I run the risk of sending 7.4 volts to the rx? My original intent here is to have the rx be at 6.0v and have the servo be at lipo voltage (7.4-8.4)
This is my intent because my rx (futaba r603fs) cannot go above 6.0v
2. As long as you don’t connect the red positive wire from the receiver pack to the receiver you won’t complete the power circuit, thus won’t get that Voltage to your receiver. (for the same reason your servo doesn’t work now, haven’t completed the circuit)
#9
Tech Champion
Weird. Do you have a multi-meter, to carefully check all of the wiring and connections, voltage to servo, etc? Make sure you have wire orders and polarity right.
#11
Tech Champion
Good to hear you got it going.
Cheers
PS:
I'd like another shot at this. Probably best to split from the receiver, most direct ground for each control signal.
Cheers
PS:
Use a splice-Y as mentioned, can be spliced from any of the 3 components.
Last edited by Dave H; 07-17-2010 at 09:26 PM.