Serial control sequential mains distribution unit

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New from Bryant Broadcast is a 1U, 12 IEC output, sequential mains distribution unit with comprehensive programming capabilities via RS 422/485 multidrop interface; suitable for use with existing automation control systems, or Bryant’s proprietary multi-unit control/monitoring software. The units are supplied configured as a standard sequential mains unit with GPI start and ‘cascade out’ connections. The inter relay timing is set at 500ms. However, the unit can be re-programmed, using the supplied Windows™ software, to change the ‘sequence on’ order, the ‘sequence off’ order and the inter relay timings of both sequence on and off independently. Alternatively the sequence off can be configured with sophisticated load shedding capabilities. For example, triggered by an UPS power failure relay contact, selected outputs can be turned off immediately, followed by other outputs at predetermined intervals for as long as the power loss persists. As soon as the main power comes back, the unit will re-sequence the outputs back on. Additionally the cascade out contact can be reconfigured as an emergency dump input, which could be connected to a low battery relay contact on the UPS. Where more than one unit is required, they can be 'daisy-chained' together using the RS 422/485 multi-drop interface, up to a maximum of 255 units. These can be controlled using Bryant Broadcast's sophisticated WinPower Lite control and monitoring software. Alternatively, users can interface them to their existing Automation Control Software, BNCS/Colledia™, Pharos Pilot/Exception etc. by using the appropriate drivers. The full serial protocol is available for developers.

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