Controlling ON/OFF switching of luminaires in the road tunnel entrance
Standard specification
Programmable by keypad on the controller front panel;
Switching criteria 1: lighting level for switching ON/OFF of up to 8 stages of luminaires;
Switching criteria 2: time allowance for cloud delay;
Outside luminances levels displayed on LCD, except in the event of lumininace meter failure;
An RS232/RS485 serial data output which will transmit on a regular basis: Luminance level; Photometer failure; Control unit fault; Control unit watch dog reset.;
Emergency Stage output contact is always On irrespective of any failure of the system;
In the event of a Photometer failure, the stage switching relays will be set according to customer requirement. The LCD will display "Photometer Failure";
A surge protector is fitted to the controller;
Controller housed within a cabinet measuring 40 cm wide x 50 cm height x 20 cm depth. Cabinet weatherpoof rating IP66.
Why specify the Mayer system?
It is sold as a package or in component parts;
It is independent of any lighting manufacturer;
It is easily integrated into a host tunnel control system;
It provides a low cost road tunnel lighting control solution;
It is simple to install and requires little ongoing maintenance.