System Power Guidelines

System Power Supply (Dual DC/DC)

When it is operated on 12 VDC, the System Power Supply (Dual DC/DC) is rated for a maximum of 13 A of LocalBus power which is sufficient for most large DeltaV systems.

When it is operated on 24 VDC, the System Power Supply (Dual DC/DC) is rated for a maximum of 8 A (4.5 A for older models) of LocalBus power. For systems that require additional power, use another System Power Supply (Dual DC/DC). For systems that require redundant power, use a second System Power Supply (Dual DC/DC).

Figure: Simplex dual DC/DC system power supply with 12 VDC input


Figure: Redundant dual DC/DC system power supply with 12 VDC input


Figure: Simplex dual DC/DC system power supply with 24 VDC input


Figure: Redundant dual DC/DC system power supply with 24 VDC input