Power FC What am I doing wrong? getting different AFR # from the display vs. Datalogit
#1
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What am I doing wrong? getting different AFR # from the display vs. Datalogit
2.0 and I'm trying to get it to interface with my Datalogit(Power FC) on my 3rd gen rx7. Using just the display, I am seeing creditble AFR #s but when I try to wire the WB to my Datalogit, I get numbers that are way off.
At idle the WB disply reads 13.8 the Datalogit AN1-AN2 reads 9.1!
I checked the pins on the TE WB unit with a volt meter and nothing registers. However, the jack for the display is hot, showing 14v(the display also reads around 14.x when plugged in to the unit.
Do I need to "turn on" those 0~5v outputs with some sort of setting? Or did a get unti that was assembled wrong?
At idle the WB disply reads 13.8 the Datalogit AN1-AN2 reads 9.1!
I checked the pins on the TE WB unit with a volt meter and nothing registers. However, the jack for the display is hot, showing 14v(the display also reads around 14.x when plugged in to the unit.
Do I need to "turn on" those 0~5v outputs with some sort of setting? Or did a get unti that was assembled wrong?
#4
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Re: What am I doing wrong? getting different AFR # from the display vs. Datalogit
Originally posted by jpandes
2.0 and I'm trying to get it to interface with my Datalogit(Power FC) on my 3rd gen rx7. Using just the display, I am seeing creditble AFR #s but when I try to wire the WB to my Datalogit, I get numbers that are way off.
2.0 and I'm trying to get it to interface with my Datalogit(Power FC) on my 3rd gen rx7. Using just the display, I am seeing creditble AFR #s but when I try to wire the WB to my Datalogit, I get numbers that are way off.
1. Is your 2.0 in 1.5 compatibility mode?
2. How are you outputting the signal from the WBO2 to the display and datalogit??
I have attached a jpg of the cords I constructed to make the RJ45 output work with the datalogit and display simultaneously. The top one can be either in conjunction with the Y cord to enable both datalogit and display OR used straight out of the WB for datalogging only (note the Vout is based on the linear output rather than the 10 bit standard) (note also the Narrow Band [NB] is optional).
I will upload the jpg of the wiring plan for simultaneous outputs in the next post.
Let me know how you get the info to the datalogit and maybe I can talk you through this.
Debug (test) procedure:
Test condition with sensor Jumpers in correct position for the type of LSU-4 sensor used (6066 or 7057). Negative (Black) lead of DVM on GND (left) end of D2. Sensor in free-air. Battery voltage of 12.0 Volts.
RJ45 I/O Connector - Y1
SVout Y1-1 4.05 (as for SVout)
Rx Y1-2 0 (-9.0 Volts if PC connected)
Tx Y1-3 -9.0
WBlin Y1-4 5.03 (as for WBlin)
GND Y1-5 0 (GND)
NBSim Y1-6 0.02 (as for NBSim)
WBVout Y1-7 3.53 (as for WBVout)
VBatt Y1-8 12.0 (as for Battery, 0.9 less if LD01 connected)
Let me know if this helps and we can go on from here
Jeff
Last edited by jeff48; 11-28-03 at 07:42 AM.
#5
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Here is the wiring diagram for the WBO2 to both datalogit and LD01 Display from the TE site. Note that it shows both the WBVout and WBlin connected to the datalogit. Obviously that implies an "either or" choice.
Last edited by jeff48; 11-28-03 at 07:49 AM.
#6
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Jeff48,
THANKS ALOT! That clarifies everything for me. I'm gonna go try that now. I was hung up trying to connect my wires to the Big green connector on the other end of the WB unit.
I'll report back.
THANKS ALOT! That clarifies everything for me. I'm gonna go try that now. I was hung up trying to connect my wires to the Big green connector on the other end of the WB unit.
I'll report back.
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No problem
FWIW the green connector is for inputting auxillary inputs Throught the connector the TE WBO2 system will accept (3) 0-5 volt inputs (1) RPM input (either 12 volt or low voltage): AND up to (3) thermocouple inputs. When the native 2.0 loggers are done they will be able to create txt logs and graphs through a laptop (looks kind of like a datalogit chart).
The 2.0 unit is also set up to do on board logging to a serial chip for later download to a laptop when the laptop isn't available during a test run.
Let me know how everything works out.
Jeff
FWIW the green connector is for inputting auxillary inputs Throught the connector the TE WBO2 system will accept (3) 0-5 volt inputs (1) RPM input (either 12 volt or low voltage): AND up to (3) thermocouple inputs. When the native 2.0 loggers are done they will be able to create txt logs and graphs through a laptop (looks kind of like a datalogit chart).
The 2.0 unit is also set up to do on board logging to a serial chip for later download to a laptop when the laptop isn't available during a test run.
Let me know how everything works out.
Jeff
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#8
Rotary Freak
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Just got back from an hour long logging session. Thanks Jeff. I will be making a set of cables like yours so that I can have the display working while I have the WB connected to the Datalogit.
Now, I just have to figure out how to tune.
Now, I just have to figure out how to tune.
Last edited by jpandes; 11-28-03 at 07:51 PM.
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