Modular train radio switchboards RRU250M, VRU250M, SRU250M

Designation:

TRAIN RADIO SWITCHBOARDS REGONIK XRU250M are modular switchboards designed for railroad track vehicles, compact engine and electrical units for sound distribution in the spaces for passengers. They are fully compliant with the UIC568 standard and meet all the EN 50151 standard requirements.

Description:

The modular construction of the switchboard enables it to be built in to 19“ drive of the fuseboard and enables a small control VTP microtelephone device to be placed at an ergonomically suitable place in the vehicle. According to the UIC568 it is possible to build:

  • a locomotive radio switchboard RRU250M,
  • a car radio switchboard VRU250M,
  • a service radio switchboard SRU250M.

There are connecting connectors on the front panels of od the switchboard modules. There is a 9-polar SUB-D socket on the filter panel FMU21 for connection of the master telephone device VTP21 and a 9-polar fork of the WAGO connector for 8+1 wires of the continuous information line according to UIC558. There is a 32-polar Harting socket with access points for program input from the car radio or other source on the central XCJ21 unit panel , for 8-polar connector according to the attachment 3 of the UIC568 standard for mobile music and speech device (MHHP) according to the 4th chapter of the UIC568 standard and connecting points of the car conductor bar for atomized amplifiers with OZW23 output and a central volume regulator RHR20. On the panel of the supply unit NMU224A is a 3-polar WAGO connector fork with connecting points of the power supply of the switchboard and signal LED for monitoring of the supply unit’s function. On the panel of the performance amplifier RZW50 is a 4-polar WAGO connector fork with connecting points of the permanently connected speakers and speakers muted by the MUTE function and 2 signal LEDs for monitoring of the amplifier’s function.The master telephone device VTP21K on the VTP21N console and an 8-polar connector for MHHP can be installed on a place suitable for the conductor. They recquire considerably less space and much more simple cabling when compared to the whole compact switchboard. There is a DIN-6 socket for connecting of the MP3 alarm in the VTP21N master telephone device console. The switchboard can remain in the switchgear in the corridor or the decking of the car. Provided that the whole train is connected with a continuous line according to the UIC558 standard and equipped with radio devices according to the UIC568 standard, the radio switchboard in the particular car of such train allows the conductor to:

  • set and make telephone calls with the train-chief and the rest of the train personnel
  • broadcast an announcement for the passengers. A tripple tone gong precedes the announcement
  • the radio switchboard can broadcast the announcements either to the whole train or only to the local car (setting by the address switch „car/train“)
  • the priority signal is automatically generated along with the announcement, it intercepts the eventual broadcasting of the program channel, switches the announcement on and sets the volume to maximum with no respect to the settings of the program volume controllers (the so called forced broadcast).
  • send the „MUTE“ signal to the neighboring controlled amplifiers in the car itself during the live announcement, to silence the acoustically close speakers connected to the respective RZW50 or OZW23 output with „MUTE“ signal brought along the conductor bar. This can prevent the unwanted acoustic feedback.
  • connect the mobile music and speech device according to the chapter 4 of the UIC568s standard with the 8-polar connector according to the attachement 3 of the UIC568 standard.

In addition to the UIC568 standard the switchboard allows you to:

  • connect directly (without the 8-polar UIC-connector) a car radio, a music player, or an other source of the program signal (music, recorded text, etc.)
  • address the broadcasted program to the whole train or only to the locar car.
  • set automatically the volume for the local car according to the overall noise in the car near the switchboard
  • change the setting of the mutual banning, the connection establishment and priorities according to the customer needs even in a way different from the UIC standard recommendation (e.g.: for city transport, mountain railway, etc.), done by the simple software modification via the accessible programming connector

The control telephone device is equipped with these control and signal elements:

  • “S” – the car/train switch for addressing the announcement
  • “C” – the button for communication with the head office (train chief)
  • “L” – the button for communication with the locomotive (engine-driver)
  • “A” – the button for broadcasting the announcement
  • LED “AOC” – the signalling of the line occupation with the announcement
  • LED “TOC” – the signalling of the occupation of the telephone
  • “HC” – the button for activation of the microphone on the handset
  • “GU” – the switch on the handset for the idle state
  • LED “C” – the signalling for communication with the hed office „C“
  • LED “L” – the signalling for communication with the locomotive (engine driver) „L“
  • LED-“A” – the signalling of the active state of the „A“ button
  • LED „AOC“ – the signalling of the line occupation with the announcement
  • LED “POC” – the signalling of the line occupation with the program
  • LED “PON” – the signalling of the emergency „ON“ state
  • LED “ERR” – the signalling of an error in the power supply
  • “PGM” – the car/train switch for addressing of the program

Technical parameters:

  • operating voltage 16,8 to 32V
  • maximal voltage fluctuation at 24Vjs max.8V
  • power consumption of the system without the load is max. 1W
  • symetrical, galvanically separated car radio input, input impedance min 20 kOhm
  • nominal input voltage for car radio: 300mV to 6,2V, adjustable
  • asymetrical input for MP3-alarm
  • nominal input voltage for MP3-alarm: 20 mV to 50 mV
  • input for musical device symetrical, input impedance 20kOhm
  • ipreliminary impedance for the UIC1,2 input is 10kOhm/1car
  • nominal input voltage for UIC1,2 is 2,0V
  • distance of the signal/noise of the pre-amplifier is min.60dB in case of a short circuit input for the microphone
  • nominal output voltage measured on the line outputs is 2,0V
  • entry for the mocrophone, MP3-alarm and the program equipped with limiter
  • change in output voltage max. +1dB when the input voltage changes by +35dB
  • ingress time constant 0,01s
  • digress time constant 1,0s
  • harmonic distortion max.0,5%
  • frequence characteristic of the pre-amplifier 300hZ ÷ 8kHz ±3dB
  • output lines:
    • the car internal line(AUDIO), asymmetrical with automatic regulation
    • the train (UIC 1,2), symmetrical, symmetry min. 45dB
  • nominal output voltage 2,0V (0dB)
  • output resistance of the line amplifier in the switchboard max. 20Ohm
  • automatic regulation of the AUDIO output 3-level -12dB, -6dB, 0dB, individually adjustable noise level
  • harmonic distortion of the microphone and program path measured on line outputs in in the 300Hz to 8kHz range, by the output voltage 2V, without the effect of the limiter max. 0,3%
  • nominal output voltage of the terminal nf-amplifier 5,0 V
  • maximum output of the terminal nf-amplifier 50VA / 0,5 Ohm, sinus
  • over heating and short circuit protection of the of the performance nf-amplifier output
  • protection against the change of polarity of the power supply voltage up to 80V
  • protection of the switchboards against overvoltage over 36V
  • connection points of the WAGO clamps for Cu wires 0,75 ÷ 2,5 mm2
  • operative temperature –30°C to +60°C
  • proportions:
    • box with modules 3U x 42TE: h=132,6 w=269,24 d=241,1
    • control telephone device on a console: h=270, w=84, d=78
  • weight:
    • box with modules: 4,2 kg
    • control telephone on a console: 0,9 kg
  • the possibility to install switchboard nits into the 19“ × 3U box

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