|
|
|
![]() |
|
|||||||
|
||||||||
![]() |
| Thread Tools | Rate Thread | Display Modes |
|
#1
|
||||||
|
||||||
|
RSL wire size
I don't see anything in R57 or R44 regarding what wire size to use for the Signal Light. Am I overlooking something? It looks like everything else is spelled out in detail.
|
|
#2
|
||||
|
||||
|
Re: RSL wire size
I would consider it a branch circuit of the DSC, so [R43-C] and [R44] would then be applicable.
|
|
#3
|
||||
|
||||
|
Re: RSL wire size
doesn't R43-C pertain to the wiring supplying the DSC, instead of what the DSC supplies to downstream circuitry?
R44 doesn't mention the RSL at all... This one does concern me: I just cut a 2 wire 0.1" female jumper in half, but it's awful small AWG, and I just don't have anything heavier with a female header lying around. |
|
#4
|
||||
|
||||
|
Re: RSL wire size
Looks like least at 20AWG. If you use 18 AWG you should be completely rule compliant. Needs to meet the color code requirements in rule R45.
|
|
#5
|
||||||
|
||||||
|
Re: RSL wire size
My issue with the 20 Amp breaker limitation is that pretty much everything else on the DSC is a 5V control signal running off of pwm cables. The RSL runs off of pwm size terminals as well, but I'm not sure what voltage it uses (I guess I could measure it). Since the RSL requirements (R55) are under command and control I would assume 5V but not sure.
|
|
#6
|
|||
|
|||
|
Re: RSL wire size
The RSL runs off 12V. If this year's [R43-C] and [R44] apply to it then I can count on one hand the number of legal robots I have seen since the RSL was introduced. Most teams use either the KOP 2-wire jumper or a PWM cable, very few use the "correct" Molex connector.
|
|
#7
|
||||||
|
||||||
|
Re: RSL wire size
Yeah, I was looking at our most recent robots and found one with 18 AWG and one with a PWM, which is why I thought I'd ask.
|
|
#8
|
|||||
|
|||||
|
Re: RSL wire size
All,
The RSL is fed through a 1.1 (hold)/2.2 (trip) amp breaker on the DSC. At this current standard PWM cables are sufficient. Recommended is #22 or larger as it is easier to terminate in the screw terminals on the RSL. |
|
#9
|
||||
|
||||
|
Re: RSL wire size
Sufficient, yes. The paranoid in me fears the lack of explicitness in R44 being coupled with a grouchy inspector...
|
|
#10
|
|||
|
|||
|
Re: RSL wire size
Quote:
|
|
#11
|
|||||
|
|||||
|
Re: RSL wire size
Lead Robot Inspectors have the experience and training to know what is common practice for this component.
|
|
#12
|
||||
|
||||
|
Re: RSL wire size
...and the Q+A comes through:
Quote:
|
|
#13
|
||||
|
||||
|
Re: RSL wire size
Quote:
You can also hack down a 1x3 .1" header to be a 1x2; there were a number of 22AWG female PWMs included in the KoP. |
|
#14
|
|||||
|
|||||
|
Re: RSL wire size
We connected ours with a normal PWM cable, but stripped off the white wire and cut off that 1/3 of the connector...it works, the light blinks, the inspector should be happy.
http://www.youtube.com/watch?v=_59j7kyWneM (fast forward to about 1:10 in the video) Try not to think too much about this stuff ![]() |
![]() |
| Thread Tools | |
| Display Modes | Rate This Thread |
|
|