Western Systems ›› Products ›› Traffic Signal Controllers ›› Siemens m50 Controller

m50 Controller

Siemens m50 NEMA controller unit represents the forefront of controller technology in the NEMA market.


The Siemens m50 series controllers are an innovative, fully actuted controller unit with an extensive compliment of operational, programming, and diagnostic capabilities. The m50 series exceeds many industry standards and specifications with advanced functionality beyond the normal NEMA standards. The m50 features new capabilities and enhancements in hardware design and communications. The series consists of the m51 TS2 Type 1, m52 TS2 Type 1,2 and the m53 TS2 Type 2 models.

Siemens m50 Controller The M50 features a removable, hand-held LCD alphanumeric backlit display unit.

Hardware Features

The controller is convection cooled with vent slots in the back and openings along the bottom. Adjustable rubber feet along the front allow users to change the angle of the display and create more or less space around the controller. Grounding metal feet in the rear stabilize the controller.

Handheld Display

The M50 features a removable, hand-held LCD alphanumeric backlit display unit, with 8-line, 40 character per line display capability. The display unit connects to the controller via a dedicated C60 port.


  • Built in external 10 Base-T Ethernet port with configurable IP
  • 8MB of flash memory
  • NEMA TS2 Type 1 15-pin Input/Output serial connection to the bus interface unit
  • NEMA TS2 Type 2 for direct parallel connection to load switches and detectors
  • Removable hand held front panel with 8x40 character backlit LCD display

Physical Dimension

  • 177mm H x 394mm W x 241mm D
  • 7" H x 15.5" W x 9.5" D


  • -34°C to +74°C
  • -30°F to +165°F

Power Consumption

  • Voltage - 89 to 135 VAC
  • Frequency - 57 to 63 Hz
  • Consumption - 25 watts (typical) to 120 watts (maximum)


  • 8 lbs
  • 4 kg

Central Processor Unit (CPU)

  • Open architecture platform with standard OS9™ operating system
  • Motorola 68360 32 bit, 25MHz processor with CPA32 instruction set
  • TOD Clock with automatic daylight savings time adjustment
  • Power supply will power the SRAM during power failures

Keyboard and Display

  • Removable light-emitting diode backlit LCD Display with 8 lines of 40 characters with adjustable contrast setting.
  • Emulation of terminal per Joint NEMA/AASHTO/ITE Standard.
  • Key quantity and function per Joint NEMA/AASHTO/ITE Standard.


  • 10 Base-T Ethernet with front panel RJ-45 connector
  • Unique MAC address assigned by the Institute of Electrical and Electronic Engineers (IEEE)
  • EIA-232 port for uploading/downloading applications software and OS updating
  • Single and multi-mode fiber optic options
  • 1200 bps Frequency Shift Keying (FSK) modem (optional)

Controller Housing

  • Seven (7) expansion slots with card guides for standard size Versa Modules and two (2) slots with card guides for standard Joint NEMA/AASHTO.ITE ATC modems (optional)
  • Polycarbonate construction (excluding back panel), rear mounting tabs and aluminum power supply mounting plate for electrical grounding
  • Carrying Handle


For all communications, networking and intelligent traffic systems (ITS) products in Washington contact Zach L. Hoiting by email at ZHoiting@WesternSystems-Inc.com or by calling 425-438-1133.

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