TEHCM Interface Board Manual - Community Spice

BAUER CONTROLSCheck thesecomponents...TEHCM powerNOTE...The circuitry on the BTIB isedge-sensitive. Verify thatthe power is removed firstbefore reapplying power.Analog ribbon cable anddata acquisition boardCAN communicationBy performing these actions...Enable the power to the TEHCM byselecting the appropriate DIO.• When power is enabled, the greenstatus LED will be enabled.• If the green LED is not enabled, eithera short condition has occurred or themain power supply is disabled.Command the TEHCM power DIO offthen on.• If the red LED is enabled, remove theconnectors that interface with theTEHCM and reapply power to helppinpoint the short condition.With power enabled to the TEHCM, usethe Analog I/O window to measure theelectrical current.• While the TEHCM is cycling in Mode 1,the electrical current varies from a fewmilliamps up to approximately 1 amp.• During this time, the TEHCM shouldgenerate audible sounds, indicating thedevice is operational.Turn on CAN communication by clicking onthe Enable check box in the PCS window.This resets the DIO and forces the TEHCMinto Mode 1 again. PCS then requests theTEHCM to enter Mode 4 to enable testing.• If the command is successful, themessage "CAN Running" is displayed.• If the message is not displayed, one ofthe following could be the cause:• The TEHCM CAN configuration filedoes not match the PCSconfiguration file.• The CAN communication cable isdefective or not connected.• The power supply voltage is below9 VDC.• The temperature of the TEHCM hasexceeded 140 deg C and theTEHCM has locked up.26 / Troubleshooting November 13, 2008