Vansco VMM3120, User Manual

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40 VMM3120
Power
The following table provides specifications for the VMM3120 logic and output
power:
Logic and Output Power Specifications
Item MIN NOM MAX UNIT
Input voltage range 7.5 - 32 V
Over-voltage - - 36
Current draw in on state (excluding outputs) - 200 - mA
Current draw in on state (including outputs)
Need
values
Current draw in off state - - 100 uA
In-line fuse required on power pins 50 A
Number of power pins 5
Number of ground pins 5
5.1.2. Logic and output power connections
When connecting the VMM3120 logic and output power, note that:

Logic and output power connections are made using the VBATT and GND
pins.

When there are multiple output power pins, the number of wires needed to
connect the VMM3120 power depends on the amount of current required by
the application.

It is recommended that you use the largest AWG wire allowed by your
connector
for the VBATT and GND pins, to meet the amount of expected
output current; however, this is not always true and depends on your
application.

The VMM3120 is protected against reverse-battery connections by an internal
high-current conduction path that goes from ground to power. To protect the
VMM3120 from damage in a reverse-battery condition, place a fuse of 50 A
or less in series with the power wires in the application harness.
Select fuse sizes by multiplying the maximum continuous current during normal
operation by 1.333 (75% de-rating factor). Do not use slow-blow fuses for this
application.

All power connections to the VMM3120 should be fused to protect the vehicle
harness.