The latest radio transmission technology gives the MPB 3400 a reliable digital radio path with high-quality transmission. The multi-frequency version of the traf c light can be supplied with up to 16 radio channels on request.
Standard features include:
The mobile traffic-light system MPB 3400 can be used either with radio, cable or quartz control. The standard version is designed for controlling bottleneck situations (with extension also for T-junctions* or crossroads*). The VA version of the MPB 3400 has directional radar detectors as a standard feature to warrant reliable vehicle-actuated operation. The MPB 3400 is quickly installed and is easy to operate intuitively without any special previous knowledge.
The clearly arranged controls for MPB 3400 are extremely easy to operate, and can be clearly read even when switched off. Radio, cable or quartz control is chosen with the function switch.
The mode switch then selects the required setting. Fixed-phase, request and green phase extension mode can be chosen separately for every traf c light and even mixed in combination.
All signal heads are identical so that the user decides which signal heads will function as transmitter and which as receiver with active feedback.
The necessary clearance times (interim times) and the green phases are adjusted with the knob on the transmitter and receiver controller. These times can also be adjusted separately in each direction for radio or cable operation.
The illuminated info display even provides information about the other side in radio or cable mode. As a result, it is possible e.g. to read off the signal and cycle status or see a pending fault (e.g. battery warning) in manual mode at every signal head.
|approx. 10-14V DC (electronic reverse polarity protection as well as under- and over-voltage protection; no loss of data when changing the battery)
|mean per signal head: approx. 0.39 A (LED)
|Innovative LED lamps (with lighting test as per DIN EN 12368) with night-time reduction feature
|4 A, 5 x 20 mm, medium time lag (commercially available)
|fixed phase, vehicle-actuated operation with green phase extension, vehicle-actuated operation with green on request, continuous red, manual operation, ashing, lamps off
|cable or digital radio path
|max. length up to 2,000m under ideal conditions
* In the export version, T-junctions or crossroads can also be controlled with the digital radio path. Automatic changeover between radio and quartz operation in bottleneck situations can be activated on request.