LAWO mc256 MKII, Technical Manual

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mc²56 MKII Technical Manual V5.10.2/1 24
Chapter 1: Technical Overview
Redundancy
Control Surface Power
Control surface power is provided by internal power supplies. Depending on the frame size, either one or two PSU
blocks are fitted to each frame. Each block is equipped with two power supplies running in parallel. Both share
the current load; if one fails, then the second is powerful enough to handle the required load alone.
Power Supply Desk Alarm
From Version 4.8 software onwards, the Central GUI offers status monitoring for all PSU blocks fitted to the
control surface.
The status of each PSU block is represented by a symbol which appears at the bottom right of every console
display:
The number of symbols relates to the number of PSU blocks within the control surface and whether any extender
bays with their own PSU are fitted. PSU blocks are represented from left to right, and each block consists of two
supplies running in parallel.
The symbols indicate:
·
Green Circle – the PSU block is working fine.
·
Yellow triangle with an exclamation mark – the PSU block is working fine, but there was a fault in
the past which has now been cleared. Click on the icon to reset it.
·
Red circle with an exclamation mark – there is a fault.
Hover over the symbol to reveal more information:
Our example shows the status for Bay 1 - the first bay on the left of the console.
Note that within the text on the GUI, bays are counted from BAY 1 upwards. However, internally bays are
addressed from 0. This means that BAY 1 on the GUI relates to an internal
Bay Server address of 0, BAY 2
to an internal address of 1, and so on.