LAWO mc256 MKII, Technical Manual

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mc²56 MKII Technical Manual V5.10.2/1 49
Chapter 2: Installation
Installing the DALLIS Unit(s)
Power
DALLIS rear view DALLIS internal view
Depending on your system specification, each DALLIS can be delivered with single or dual redundant power
supply units (PSUs).
When a redundant PSU is fitted (type 940/16), the load is shared between the two supplies.
The PSUs are hot pluggable. For details on how to change a PSU, see DALLIS PSU replacement .
Warning
All devices MUST be connected to the mains using the three-cord power leads supplied with the system.
When running with two mains supplies (PSU 1 and PSU 2), make sure that both circuits lie on the same
ground potential. Otherwise, an internal bridge of two ground wires will lead to a ground loop!
Power Consumption
The power consumption of the DALLIS varies from a minimum of 70W to a maximum of 180W, depending on the
amount and type of I/O cards fitted, and whether there are dual power supplies.
Electrical Voltage
3RU frame, PSU specification:
·
Input: 100-240 VAC (PFC)/ 48-62 Hz/ 1.6-2 A
·
Output: 12 VDC / 8.3-11 A
6RU frame, PSU specification:
·
Input: 100-240 VAC (PFC)/ 48-62 Hz/ max. 2A
·
Output: 12 VDC / 11 A