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| Key features (mechanical and electrical)
 | | Sturdy dimmer cabinet with a footprint of only 600 x 600 mm for 72 dimmer modules
| | Easy installation and access to the connectors from the front using a 19’’ swivel frame
| | Plug-in dimmer modules with three power ratings of 3,000 VA, 5,700 VA or 11,500 VA
| | Sine-wave dimmer modules that are fully compatible with existing modules are in the pipeline
| | Cabinets can be populated with a variety of modules of different types and loads
| | A mains switch and a residual current device for each dimmer rack are fitted as standard
| | Key features (control)
| | All dimmers are fitted with current sensing and fault feedback functions via Ethernet as standard
| | Load check, control checking and fault indication with LEDs for each dimmer circuit
| | Two independent signal inputs via Ethernet and/or DMX with individual patch
| | LTP-, HTP- and backup link of the control input possible
| | Two separate DMX inputs A + B with Thru output for additional cabinets
| | Conversion and output of two additional DMX lines when controlled via Ethernet
| | Second processor as a synchronous back-up system available as an option
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| | dimMA
dimMA – Digital dimming system for permanent installations
With the new and innovative digital dimming system dimMA, the well-known reliability of the MA touring dimmers is now also available
for permanent installations. The new MA installation dimming system uses 19’’ rack cabinets that are made by the renowned manufacturer Rittal and have a foot print of only 0.36 m² so that they can be packed.
tightly. All connections and outgoing lines are located on the inside of the cabinet. A swivel frame which operates similar to a huge front
door provides easy and convenient access from the front and makes unnecessary any additional load terminals or patch fields. Power feed and outgoing cables can either be routed from the top or the bottom of the cabinet.
Rugged cabinet construction
The swivel-frame cabinet with its 18 plug-in slots (a maximum of 72x 3,000 VA) can be fitted with modules of 4x 3,000 VA, 2x 5,700 VA or 1x 11,500 VA loads. Each rack can be populated with modules of different
types.
In addition dimmer modules with high rise-time chokes for TV applications are available and sine-wave dimmer modules with wavemodulation technology that are compatible with phase-cut modules
are in the pipeline. Thus the digital dimming system for installations is ready for the future and based on proven and rugged technology.
For special applications switching modules with load contactors are available upon request. For feeding (TN-S net), there is an integrated three-phase bus-bar
system with a load capacity of 400 A per phase, which also allows easy cross wiring, if the cabinets are installed next to each other.
Upon request, the cabinets can be equipped with special components such as mains switches, auxiliary contactors, additional, parallel output terminals, or DMX and network distributors.
Dimmer modules
The plug-in modules for the dimMA digital dimming system are available with load ratings of 4x 3,000 VA, 2x 5,700 VA or 1x 11,500 VA. The dimmer modules are available with rise times from 260 µs to 400 µs (or 370 µs) and up to 720 µs depending on the load rating. This allows us to offer the optimal solution for every kind of application
while also taking economic aspects into consideration. Each dimmer module features a separate single-PCB computer with power supply and communicates with the Network Dimmer Processor of the cabinet via a CAN-bus interface. Dimmer modules of the same rating may be freely exchanged; any assigned settings such as dimmer number, dimming curve, non-dimming operation, and special and/or panic functions remain linked to plug-in slot and apply to any new module inserted. Each module is cooled with a temperature-controlled fan activated only,
if the module is actually in use. This reduces drastically the amount of noise produced by the dimming system because only those components are cooled that need it. Via the NDP, each dimmer circuit provides the
lighting control system with detailed information about current and voltage, the status of the load connected, and about any faults occurring.
Module racks
All dimmer modules are designed as plug-ins, separate by phase, and mounted in 19” racks with separate feeds for three modules at a time. Each rack (when fully fitted, a maximum of six racks per cabinet is possible) are equipped with a combined mains fuse and switch and a residual current device (RCD) as standard. In order to comply with DIN
15565-8, the RCDs per rack are configured so that they are all shut off when tripped,
if multi-core is used.
Replacing dimmer modules during operation or switching off individual groups of dimmers is therefore possible and permitted without shutting off the entire cabinet.
dimMA compact version available
The high quality dimMA dimming system for installations is also available in a basic version. This particularly attractive version comes without the swivel frame and the feedback feature on the dimmer modules. The
Network Dimmer Processor (NDP) is also available in a basic version without 3-phase power supply, network connection, remote and panic functions.
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