Product

• Trendsetter^® Autoloader (MCE)
• Trendsetter NEWS (MCE) (except NEWS SA)

Symptoms

• MCE firmware error # 40016: SMC: Motor unexpectedly hit the away sensor [<str>]
• Loud bang when unload table stepper motor hits the end of its travel

Cause

• Cause 1: A newer MCE controlled release (2.0 or later for TS AL, 2.1 or later for TS NEWS) has been installed on an output device with an old 24-tooth unload table stepper motor pulley (instead of the new 16-tooth pulley). The default NVS parameters of the newer CRs are incompatible with the old pulley.
• Cause 2: Home side unload table stepper motor sensor or cable is faulty

Solution

Solution to Cause 1: MCE CR 2.0 or later (TS AL) or 2.1 or later (TS NEWS) installed on output device with old pulley

1. Determine whether the output device has new firmware and an old pulley.

   1. In Service Shell, use the Version Checker tool to see what controlled release version is installed.

   2. Check the output device serial number. If it is TM259 or later (Trendsetter AL) or NM126 or later (Trendsetter NEWS), it should already have the new 16-tooth unload table stepper motor pulley. If the device serial numbers are earlier than TM259 or NM126, visually check the pulley to see whether it is the old 24-tooth version.

      

2. If the output device has MCE CR 2.0 or later (TS AL) or 2.1 or later (TS NEWS) installed and the unload table stepper motor pulley is the old 24-tooth version, start Service Shell and temporarily change the mhauto NVS parameters to work with the 24-tooth pulley.
   set mhauto UnloaderSPM 1.7
set mhauto UnloaderMSR 4

3. Order kit # 512-00072A (non-rotator) or 512-00073A (rotator) for FCO CA02183 (new 16-tooth pulley). When the kit arrives, perform the upgrade procedure and mark item #2 on the AL/NEWS ECO 100 label.

   IMPORTANT: After installing the new pulley and belt guide, you must ensure that mhauto UnloaderMSR is set to 2 and mhauto UnloaderSPM is set to 2.55 (as described in the upgrade procedure). Otherwise, you run the risk of damaging the motor and/or cabling.

Solution to Cause 2: Home side unload table table motor sensor or cable is faulty

1. Use the scan command to check the status of the AL_SensorTravellerHome I/O.
   scan AL_SensorTravellorHome
   For information on interpreting sensor I/O states, see Interpreting MCE Sensor I/O Bit States.
2. If necessary, replace the faulty home side unload table table motor sensor or cable.

Technical contact

Elina Pasheva

Submitted by

Date submitted

09 Jun 2005