The latest VMS MARI, the MkII version, is capable of displaying up to 20 such combinations of aspects in each signal, up from 6 in the original unit.
The MARI signal is designed to be mounted on lightweight posts and ground mounted brackets. For mounting on other structures see the section on brackets.
Features and benefits
- Long life LED light source
- Clear and distinct 3 character display
- Up to 20 aspects available in MkII version - up to 6 in the MkI
- Wide angle viewing
- Backwards compatibility with existing signals
- No external hoods - construction provides phantom immunity
- Each aspect is electrically independent
- Non-corrosive materials used throughout
- "Plug & Play"; speedy connection / disconnection
- No-maintenance Line Replaceable Unit
- Easily retrofitable
A totally new approach has produced a system of lightweight signals and structures that delivers both high performance and significant cost savingsPrimary drivers
Primary drivers
Reduced initial costs of installation and infrastructure
Installed and maintained quickly and with minimum operational interference
Installed / maintained without plant equipment using people and people-operated “tools”
No routine maintenance
Minimum footprint
Minimum kinematic envelope for “inter-track” applications
Scope
Modular Programmes
New Renewal Programmes
Maintenance Replacements Lightweight or Conventional structures
Straight & Offset structures
Variable structure heights (up to 5.1m signal)
Maintenance
None expected (routine)
Standards
As mandated – test conventions, best practices and non-mandatory requirements
Alignment
Setting and beam checking without climbing
Repair
Minimal number of standard parts
Easy transportation and handling
Configuration Minimal number of part numbers / units Modular units to obtain configuration
Performance
24Vdc and 110Vac Meet current LED light levels, readability, availability and life expectancy Backward compatible to existing and new system requirements Health Checks