Emerson MVME7100 manual 3 Power Requirements

Hardware Preparation and Installation Power Requirements

2.3.2Power Requirements

The MVME7100 uses only +5.0 V from the VMEbus backplane. On board power supplies generate the required voltages for the various ICs. The MVME 7100 connects the +12 V and - 12 V supplies from the backplane to the PMC sites while the +3.3 V power supplied to the PMC sites comes from the +5.0 V backplane power. A maximum of 10 A of +3.3 V power is available to the PMC sites, however the 90 W +5.0 V limit must be observed as well as any cooling limitations.

The next table provides an estimate of the typical and maximum power required.

Table 2-3 Power Requirements

Board Variant	Power
MVME7100-0161	Typical: 40 W @ +5 V
	Maximum: 55 W @ +5 V
MVME7100-0163	Typical: 40 W @ +5 V
	Maximum: 55 W @ +5 V
MVME7100-0171	Typical: 45 W @ +5 V
	Maximum: 60 W @ +5 V
MVME7100-0173	Typical: 45 W @ +5 V
	Maximum: 60 W @ +5 V

The following table shows the power available when the MVME7100 is installed in either a 3- row or 5-row chassis and when PMCs are present.

Chassis Type	Available Power	Power With PMCs
3-Row	70 W maximum	Below 70 W1
5-Row	90 W maximum	Below 90 W1

1. Keep below power limit. Cooling limitations must be considered.

32 MVME7100 Single Board Computer Installation and Use (6806800E08A)