Technical Bulletin
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Technical Bulletin

Emergency Brake Software Recall

Safety Issue--Immediate Action Recommended

Date

September 1, 2003

Reference

135

Route to

Modernization Manager/Service Manager

From

MCE Technical Support Department

Equipment

All Non-Programmable Traction Control Systems designed for ASME A17.2000 (B44) Code with MP software version prior to 8.01.00.

Description

In MP software versions prior to 8.01.00, we have recently identified an error in our Emergency Brake logic. When the emergency brake has been activated due to unintended motion or ascending car overspeed, and, prior to resetting the emergency brake, the power is removed, upon reactivation of power the emergency brake will automatically reset. Code requires that, if the emergency brake is activated prior to loss of power, it should remain activated when power returns.

Beginning with software version 8.01.00 and in all subsequent versions, the brake will not automatically reset under this scenario. The emergency brake will require a manual reset as specified in the code.

Action

If your company had purchased any of the affected units, you will be contacted by MCE to coordinate the software recall along with any possible hardware changes. All original software and hardware must be returned to MCE.

Instructions for replacing your current software and hardware (if necessary) will be included with the package, along with instructions for returning the original software and hardware to MCE.

Help

Should you require additional technical assistance:

  • Telephone 916/463-9200
  • Touch "6" for Technical Support
  • Refer to the reference number above