Cycle Analyst DPS V 2.25 Current Limit issue

[macfrank]

Hi all,

I just connected two identical CA with the wiring described in the user manual 9.3 for Current Throttle or Cruise Control.
The Version of both CA is 2.25 and DPS models (direct plug with speedo).
I connected the signal line from the throttle to Vi (input CA) and the Th-output to the controller signal port of the throttle.
I also connected the GND of the controller from the throttle plug to CA GND as described in the user manual.
In Advanced Settings I changed the AUX Voltage to Amp or Speed.

One of the CA works perfect with this modification, the other one switches always to full-speed right after power on the controller. No matter what setting I choose in CA Advanced Setup.
I checked the voltages on the CA board:
Vi=0.85V (zero throttle)
Vi=3.86V (full throttle)
Th output= 3,86V no matter if zero or full throttle signal is used.

I don't know if there are other setting which I have to check to solve this issue or if it's may be a hardware error of the CA.

Looking forward for any idea to solve this problem.

Thanks in advance and kind regards
Frank

BTW: Hopefully my explanation were understandable, sorry for my English... It's not my native language

 

[heathyoung]

You have to switch on the aux voltage setting - its in the manual somewhere

 

[Tench]

I do know when using this mode that if the CA does not see an input voltage from the throttle it will create a full throttle signal to send to the controller giving the symptoms you have, so i would go over the imput connections again and compare every setup parameter in the 2 CA's.

 

[macfrank]

Thank you all for your reply.

I checked the input connections on the CA board (Vi and GND) with a volt meter. Depending on the throttle position, the voltage is between 0.85V and 3,8V.
The setting in the Advanced Setup of CA (Aux Voltage) has been set to Amp Limit and Speed limit. Both settings has the same effect.
But it seems that the CA is not recognizing or ignoring the input signal at Vi pin.
Maybe there is something broken on the CA board?
Maybe a software bug?

I'll try to disconnect the Vi cable on the CA board again and solder it again (but I'm really sure, that the cable connection is not the problem).
After re-soldering the signal cable to the CA board, I will post the result.

 

[macfrank]

Re-soldering the Vi-pin did not work for me.
At least I changed the complete cable and this does the trick. Maybe some broken wire inside the cable.... I don't know.. but now it works fine and I'm happy

Thanks again and kind regards