MAN 主机电喷资料七.pdf

Alarms ReferenceACUXX009904MBD Special test purposes onlyCh35,0099,Prop. Valve Test Set Poin->Suprv. Ch35,0099,Prop. Valve Test SMBD special test equipment not connectedNo effect on engine. Alarm is only present in MPC Test mode.None. Alarm will disappear when MPC is rebooted into Normal modeDescription:Cause:Effect:Sugg. Action:010106Commanded control values from commanding MPC cannot be received over the control network.ECU Commands->No Commands Received from ECU ATypically caused from a failed MPC. Could also be caused by performance loss on the control network.This will force the ACU to accept commanded control values from the redundant ECU. These control values involves the HPS and the blower control. If there is no alarm for missing telegrams from the redundant ECU, there would normally not be any change in engine behaviour. If, on the other hand, alarms are claiming that both control commands from ECU A and ECU B are missing, then the ACU cannot receive new control commands from the ECUsCombined with other active alarms this should be used for diagnostics purpose, and thereby as a guide for finding the actual cause of the problem.Description:Cause:Effect:Sugg. Action:010107Commanded control values from commanding MPC cannot be received over the control network.ECU Commands->No Commands Received from ECU BTypically caused from a failed MPC. Could also be caused by performance loss on the control network.This will force the ACU to accept commanded control values from the redundant ECU. These control values involves the HPS and the blower control. If there is no alarm for missing telegrams from the redundant ECU, there would normally not be any change in engine behaviour. If, on the other hand, alarms are claiming that both control commands from ECU A and ECU B are missing, then the ACU cannot receive new control commands from the ECUsCombined with other active alarms this should be used for diagnostics purpose, and thereby as a guide for finding the actual cause of the problem.Description:Cause:Effect:Sugg. Action:010110Commanded control values from commanding MPC cannot be received over the control network.I/O Configuration->ACU CommanTypically caused from a failed MPC. Could also be caused by performance loss on the control network.This will force the ACU to accept commanded control values from the redundant ECU. These control values involves the HPS and the blower control. If there is no alarm for missing telegrams from the redundant ECU, there would normally not be any change in engine behaviour. If, on the other hand, alarms are claiming that both control commands from ECU A and ECU B are missing, then the ACU cannot receive new control commands from the ECUsCombined with other active alarms this should be used for diagnostics purpose, and thereby as a guide for finding the actual cause of the problem.Description:Cause:Effect:Sugg. Action:010111Commanded control values from commanding MPC cannot be received over the control network.I/O Configuration->ACU CommanTypically due to deviations between redundant inputs signals to ECS. Input signals from either sensors or serial connections.This will force the ACU to accept commanded control values from the redundant ECU. These control values involves the HPS and the blower control. If there is no alarm for missing telegrams from the redundant ECU, there would normally not be any change in engine behaviour. If, on the other hand, alarms are claiming that both control commands from ECU A and ECU B are missing, then the ACU cannot receive new control commands from the ECUsCombined with other active alarms this should be used for diagnostics purpose, and thereby as a guide for finding the actual cause of the problem.Description:Cause:Effect:Sugg. Action:02020104Amplifier Current for bypass valve not within rangeAmplifier->Bypass Amp. Current SupervisionAmplifier failureBypass controll is not possibleCheck cabling and fuse of amplifierDescription:Cause:Effect:Sugg. Action:gls / 14-07-2006 10:31:06 Page 1 of 12400990402020104ACUXX02020105Amplifier for swashplate pump proportional valve has shut down due to too high current consumption by the valveAmplifier->Bypass Amp. Reports Internal FaultMost probably a failure in the cabling to the sensor, orfailure of the sensor, or missing sensor power supply, orfailure of the input of the MPC.Control of swashplate on actual pump is stopped since the amplifier cannot deliver the required current before it has been reset. If possible, the swashplate will be set in fail-safe position corresponding to full flow in AH direction.Inspect entire cabling to and from amplifier. Notice this includes several connections to the ACU and to the proportional valve. If cabling is OK replace ACU, check/replace proportional valve, or check/replace amplifier.Description:Cause:Effect:Sugg. Action:020281The Travel Feedback signal was not received.Var. Bypass->Var. Byp. Travel Feedback failedFailure in Wiring or variable bypass enco。