Specialized industrial electronics repair shops can refurbish BRU-105 drives by replacing aged electrolytic capacitors and power modules.
A 52-page scanned version of the BRU-105 documentation is available on BRU-Series Instruction Manual:
Check the official ElectroCraft website for archived manuals and support documentation. electrocraft bru 105 manual.pdf
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The is a discontinued brushless servo drive designed for high-performance industrial automation and robotics. It belongs to the broader BRU-Series of drives, which are known for their versatility in controlling both brushless servo motors and induction motors. Key Specifications Leave a comment below with your specific BRU-105
The BRU-105, along with other drives in the BRU-Series, supports a master-slave configuration for torque sharing. This is used when multiple motor shafts are rigidly coupled to drive a common load. The manual provides specific wiring instructions for cases where master and slave motors rotate in the same or opposite directions. It also details a step-by-step procedure for setting up the "slave" drive in torque mode with a command of zero, then adjusting the command scaling and offset. A critical safety note in the manual specifies that the SSO relay must be wired in the enable circuit so that all drives are disabled if a fault occurs on any one of them.
Center this completely to minimize motor drift when the command voltage is at zero. Step 3: Power Up and Balancing It belongs to the broader BRU-Series of drives,
Set-up and tuning are typically performed using a "Personality Module" (PM) that plugs directly into the drive module. Installation and Wiring