Brooks Automation 2. Introduction to the Hardware
Part Number: 603988 Rev. A System Components
Low Voltage Power Supplies
The PreciseFlex 100 Robot has an integrated 125-Watt, 24VDC Power Supply that accepts a range
of AC input from 90V to 264V and an integrated 365W, 48VDC Power Supply for the motors.
Electrical Shock Hazard
Contact with electrical power can cause death or serious personal injury.
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To avoid electrical shock, disconnect the power before troubleshooting the
electrical components.
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In addition to exposed high voltage pins and components, the heat sinks on the
Power Supplies are not grounded and expose high voltage levels. Disconnect AC
power to the robot prior to accessing these units.
Energy Dump Circuit
The 48VDC supply has a regulated output and an overvoltage protection circuit that is triggered if
the voltage reaches 60 Volts. Rapid deceleration of the robot motors can generate a Back EMF
voltage that can pump up the motor voltage bus. In order to avoid bus pump up, an Energy Dump
Circuit is connected to the 48VDC bus, and a regeneration resistor is connected to the controller to
dissipate this energy when necessary.
Copyright © 2023 Brooks Automation, Inc.
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