Tunnel Lighting Control System T51-4 system is a distributed I/O contactor based industrial microprocessor lighting control panel.
SCOPE
APPLICATION
Structure
Unidirectional
Bidirectional
Short tunnel ramp
Long tunnel
Inside the T51-4 System NEMA 3R, 4X or 12 enclosure. (Pre-wired and tested to UL508A (CAN/CSA C22.2.0014-M91)
Major Components
Note: Incoming power of 120 VAC, additional Transformer 480/277 VAC.
Normally closed interposing relay
Power distribution
Fuses
Normally closed contactor
Main controller: T51 Six output channels for night and two daytime light levels. Hold-On timer, (0-160 min)
To Remote Dimming Enclosure Note: The 4-20mA signal to remote dimming enclosures and converts the signal to a voltage, resulting in 0V switching the LED light output off, 1V as minimum output and 10V as full output to control LED drivers.