Pikes Peak Cog Train and Peru Rail touring train both equipped with TMV control systems

Meeting Customer Specifications 

We’ve already mentioned Nippon Sharyo and the specifications they presented for the UP train, but every customer has project requirements of some kind.

Normally, public projects such as passenger trains and streetcars have a list of specifications in a contract. For all other projects, historically, our sales team has listened to our customers’ wishes, our engineers have looked over vehicle schematics, and from there a list of features is generated into a quote. These are essentially practical specifications, and are at the heart of what TMV is all about. From retrofitting older locomotives to making sure a connector is military grade, the variety of specifications seen across TMV’s project history is, (in nonprofessional terms), really cool. 

El Paso Streetcars

Historical streetcars in El Paso, Texas

Streetcars for El Paso – Entire rebuild done by Brookville Equipment, fitted with TECU propulsion control system. Here are a few examples of requirements put forth and met:

  • Required upgraded electrical components to ensure 20 additional years of reliable operation. 
  • Intent was to produce vehicles with high reliability and to minimize in-service delays. 
  • Contract outlined a required minimum of ten years previous experience. TMV and Brookville Equipment were chosen based on their experience with the New Orleans Streetcars. 
  • Technical Specifications set out as to be acceptable to the CRRMA and therefore comply with IEEE standards.
  • Noise limitations were put forth for all developments, to be acceptable in city streets at any time, but also to avoid making high-pitched sounds that could disturb canine guides.
  • TMV had to ensure that all propulsion, braking and other TECU-controlled systems could accommodate track configurations, including speed limits and timeframes, stops and starts, and incline grades. 
  • TMV as subcontractor was required by contractor (Brookville Equipment) and CRRMA to possess all assets, skills and experience needed to perform all the elements of the scope of work outlined.



New paint job on a rebuilt El Paso Streetcar

Other Significant Project Requirements from TMV’s History:

  • SW1200 Gen-set: Repowered locomotive to comply with EPA title 40 part 92 requirements, and meet all applicable state regulations where the unit would operate (Delaware, New Jersey and Pennsylvania). Individual axle control, individual motor cut-out, an idle stop scheme that conforms to AAR S-5502, and a minimum of 30% adhesion in all weather conditions, are all features TMV was asked to provide. In this case, the customer reserved the right to verify compliance with the contractor’s quality assurance program, which was to be based on AAR/M-1003, Mil STD 9858A, ISO 9000, or ASQC Q90.

Pike’s Peak Cog Railway and PYSC’s Peru Rail touring train – equipped with TMV control systems

https://en.wikipedia.org/wiki/PeruRail https://www.cograilway.com 

Diagram illustrating transitioning from series to parallel on the traction motors
  • Road Switchers for passenger or freight service benefit from the TECU’s “transition smoothing”, which helps prevent excessive torque or jerk on the coupling
  • Wet weather is known to cause nuisance Ground Relay trips. To take care of this, TMV provides Automatic Ground Relay Reset.

  • Norfolk Southern’s DC2AC project required an electrical cabinet, which TMV has experience making. However, they also required an entire Electrical Room. This was a first for TMV but enthusiastically accommodated. TMV worked with CAF Power & Automation for this project.

Thank you for reading, for other articles in the series:

Introduction – TMV Claims to Pass Muster

Pass Muster – 1 – Capability Test Report for Nippon Sharyo

Pass Muster – 2 – The Railway Industry and ISO 9001

Pass Muster – 3 – Trade-shows and Memberships

Conclusion – Quality Policy and the Workplace