If the sensor doesn't spin up when power is applied, check the fuse, check the sensor's web interface if Laser is On and
Motor RPM is a valid value, check the input voltage, and make sure that the power source (battery, power inverter, or
power rail) is providing sufficient current. If they check out and yet the problem persists, get
Technical Support on page 89
.
5.4.3.1 Power Considerations
Velodyne LiDAR sensors are robust systems and can handle operational variances. But many changes and variances can
affect performance and lifetime of the sensor. One of the most understood and controllable environmental inputs is power.
The following items are guidelines for input power to Velodyne sensors.
1. Power: Typical power consumption when the VLS-128 is stationary is approximately 30 W. Under certain con-
ditions, power consumption will increase. To assure proper operations during those conditions the recommended
power supply output (i.e. power in to the sensor) is 60 W continuous, 65 W peak.
2. Voltage: 12 V is recommended but the sensor can support 9-32V DC clean power. As with all electronic equip-
ment, a large change in voltage levels in a short time can cause issues with power regulation. Voltage fluctuations
must remain less than ±100 mv. Voltage transients should be as short as possible and not exceed 35 V.
3. Current: The required input current is in the range of 2.5 – 7.5 A depending on input voltage. The current level
should be maintained to sustain the voltage change parameter stated above.
4. Connection: The power rail to the sensor should be isolated from any power spike generating equipment such as
motors, incandescent lamps, etc.
30 VLS-128 User Manual
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