Hello to all of you,
I bought an inductive transducer - WA100 - from HBM and connected to the CN0288 eval module. The transducer has a sesitivity of 80mV/V and a nominal supply voltage of 2.5Vrms at a frequency of 4.8kHz. Before connecting the transducer to the module we changed the C9 capacitor value from 15nF to 7.5nF and we obtained a 4.7kHz frequency but at a voltage of 10Vrms. From here all attempts to bring the transducer and plate into working condition have failed. What can we do to make the system composed of the transducer and eval module work normaly ? Another question is : how do I know the start of the windings (dot) of my transducer terminal wires ?
Thank you !
here is for hardware configuration:
+U_B = J3-1
-U_B = J3-5
+U_out = J3-6
+U_out = J3-2
as for the R4 (sigout), should be calculated base from the equation found below:
- R2 from the datasheet and found from the equation above is R4 of CN0288
- V_pri = 2.5Vrms
- V_a + V_b can be determined by the following step:
(note that V_a is +U_out = J3-6 and V_b is +U_out = J3-2)
For the winding, kindly inquire it from the manufacturer of the transducer.
Thanks a lot for the answer. I think I forgot to say that I do not have WA-Electronic, I only have the WA100 transducer and my problem was that by increasing the carrier frequency the input voltage was increased, and from here a whole chain of inconsistencies appeared. As you said and I read, I will have to remake all the calculations and change many components on the board. As for the beginning of the windings, I assume that those marked with + are also the beginnings :
WH(White) - Meas+
BU(Blue) - Exc+
GN(Green) - Sens+
RD(Red) - Meas-
BK(Black) - Exc-
GY(Gray) - Sens-
I found this datasheet for WA100 which you could refer from for the electrical wirings, calibration and other technical specs that you might need in doing your evaluation.
On page 11 you will found this general wiring diagram and the connector pin for full bridge configuration as you mentioned from your recent reply: