PowerHub
TM
User Manual, Version 1.2
23
7.4
Remote Enable Connection
The remote enable connection is used to transition the PowerHub from a low power disabled
state to an active state. To enable the PowerHub, this input needs to be connected to a voltage
between 2-60 Vdc in reference to ground (Pin 2 of the Remote Enable Connector). When left
disconnected, the PowerHub is in the disabled state. When the PowerHub is disabled, all
outputs and communications are inactive.
CAUTION:
Pin 1 on the Remote Enable connector is fused internally. Always keep any
load on this connector safely below 500 mA.
CAUTION:
Pin 1 on the Remote Enable connector is tied to the input voltage. Ensure
any external circuitry connected to this pin is rated for the input voltage of the unit.
EXAMPLE CONFIGURATION
3
2
+12V
ACC
Figure 10: Remote enable configuration example – vehicle key switch
The accessory line of a vehicle key switch can be a used as a convenient remote enable input to
the PowerHub. In this configuration, the PowerHub is enabled when the key is in the ACC
position and disabled when the vehicle is turned off.
JUMPER CONFIGURATION
1
3
Figure 11: Remote Enable Jumper
A remote enable jumper is included with the PowerHub. When the jumper is in place, the
PowerHub will auto-enable any time power is supplied to the input connector. The PowerHub
will not go into low power state with the jumper installed.
8
PHYSICAL DIMENSIONS AND MOUNTING
The slim form factor of the PowerHub Series of managed power distribution modules provides a
compact solution that is easily integrated into new or existing designs. A dimensioned outline
drawing of the PowerHub is included as Figure 12.
