Commander Installation Guide
2.5MAINS CONNECTION AND FUSING
2.5.1500-15-30 SERIES POWER SUPPLY
The PSU chassis occupies an additional 2U of rack space below the matrix and is internally wired. The complete assembly therefore occupies 8U for a 96 port system, 14U for a 192 port system etc. The PSU is half rack width allowing two PSU modules to be fitted, thus providing backup operation.
Each power supply is fitted with a D9 socket, which provides a relay contact indicating the PSU status. The table below gives details. Connection should only be made to the pins indicated: any other connections may cause failure of the power supply unit. There is also an auxiliary power connector: details below.
D9 Fixed Plug Pin | Function |
1 | Relay normally closed |
2 | Relay normally open |
3 | Relay common |
XLR4 Fixed Socket Pin | Function |
1 | 0V |
2 | +15V |
3 | No connection |
4 |
Note: The Aux power connector is protected by an internal
The power supplies are
The mains plug has an integral fuse tray fitted with a 20mm glass cartridge slow blow/anti- surge fuse. The fuse rating is marked adjacent to each fuse tray.
2.5.2EARTHING REQUIREMENTS
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