Data logging: Trolley museum controls rectifiers remotely

What the nonprofit Pennsylvania Trolley Museum was missing was a practical way to keep its East Site, and a small booster at its West site—which are 3,500 ft apart—in constant communication.


Washington, PA —The nonprofit Pennsylvania Trolley Museum (PTM) keeps historic trolley lines running with two 500 kW 600 Vdc trolley rectifiers at its East Site, a small booster at its West Site, and more than 100 volunteers. What PTM was missing, however, was a practical way to keep these sites—which are 3,500 ft apart—in constant communication. Donated data loggers from Red Lion provide monitoring, notification and logging options, as well as multiple protocol conversion and a built-in Web server.

The museum’s application offered several unique requirements:

  • Remote control of the East Site rectifiers at the West Site.

  • The ability for the dispatcher to view in real time the current power demand to avoid setting a costly “super peak.”

  • A means to data log the demand intervals (15 minute) and the operations of the rectifier breakers.

  • A way to notify offsite volunteers that the electrical system has a problem.

  • The ability to keep the PLC clocks accurate over a long period of time.

  • A solution that was cost-effective, reliable, and simple to implement and program.

To control trolley rectifiers remotely, the museum considered purchasing one of several dedicated rectifier control devices on the market, but the price tag of more than $9,000 per unit was too costly. Source: PTM

To control trolley rectifiers remotely, the museum considered purchasing one of several dedicated rectifier control devices on the market, but the price tag of more than $9,000 per unit was too costly for the nonprofit. Even at this price, however,

Red Lion donated a Data Station Plus so volunteers could keep the historic site running. The device provides a virtual HMI with built-in PC-based SCADA functionality (DSPSX & DSPGT) for remote control and monitoring of sites and power usage. Data logging is done directly to CSV files on CompactFlash cards.

The device sends alarm messages to volunteer engineers via e-mail or text message. The unit receives and maintains accurate times from an Internet time source via the SNTP (simple network time protocol) client facility, while the Webserver provides worldwide access to data logs. According to Red Lion, 10 Base-T/100 Base-TX Ethernet connection can connect to an unlimited number of devices via four protocols simultaneously, and independent serial ports provide virtually unlimited integration methods. Extensive built-in drivers provide data mapping to PLCs, PCs, and SCADA systems is also provided.

Red Lion’s donation also included a development kit containing its Crimson 2.0 software for simple programming and implementation of the equipment. A Red Lion brochure on the Data Station Plus, available in three models (DSPLE, DSPSX and DSPGT), is newly available.

—Edited by Renee Robbins , editorial director, Control Engineering Weekly News (Register here and scroll down to select your choice of eNewsletters free.)

No comments
The Engineers' Choice Awards highlight some of the best new control, instrumentation and automation products as chosen by...
The System Integrator Giants program lists the top 100 system integrators among companies listed in CFE Media's Global System Integrator Database.
Each year, a panel of Control Engineering and Plant Engineering editors and industry expert judges select the System Integrator of the Year Award winners in three categories.
This eGuide illustrates solutions, applications and benefits of machine vision systems.
Learn how to increase device reliability in harsh environments and decrease unplanned system downtime.
This eGuide contains a series of articles and videos that considers theoretical and practical; immediate needs and a look into the future.
Controller programming; Safety networks; Enclosure design; Power quality; Safety integrity levels; Increasing process efficiency
Additive manufacturing benefits; HMI and sensor tips; System integrator advice; Innovations from the industry
Robotic safety, collaboration, standards; DCS migration tips; IT/OT convergence; 2017 Control Engineering Salary and Career Survey
Featured articles highlight technologies that enable the Industrial Internet of Things, IIoT-related products and strategies to get data more easily to the user.
This article collection contains several articles on how automation and controls are helping human-machine interface (HMI) hardware and software advance.
This digital report will explore several aspects of how IIoT will transform manufacturing in the coming years.

Find and connect with the most suitable service provider for your unique application. Start searching the Global System Integrator Database Now!

Infrastructure for natural gas expansion; Artificial lift methods; Disruptive technology and fugitive gas emissions
Mobility as the means to offshore innovation; Preventing another Deepwater Horizon; ROVs as subsea robots; SCADA and the radio spectrum
Future of oil and gas projects; Reservoir models; The importance of SCADA to oil and gas
Automation Engineer; Wood Group
System Integrator; Cross Integrated Systems Group
Jose S. Vasquez, Jr.
Fire & Life Safety Engineer; Technip USA Inc.
This course focuses on climate analysis, appropriateness of cooling system selection, and combining cooling systems.
This course will help identify and reveal electrical hazards and identify the solutions to implementing and maintaining a safe work environment.
This course explains how maintaining power and communication systems through emergency power-generation systems is critical.
click me