VM60-T Bosch Rexroth Indramat
Wake Industrial LLC is not an authorized distributor of this product.
The Bosch Rexroth Indramat VM60-T is part of the VM Amplifier Drives series and has an integrated ballast resistor. It features a rated current of 60 Amps at 45°C and 30 Amps at 55°C, as well as a peak current of 150 Amps. The drive includes a continuous braking power of 250 Watts and an overvoltage trip setting of 750 VDC.
Internal Product Review
The VM60-T is a VM amplifier drive engineered for dependable motion control, with a 60 A rated current at 45 °C and 150 A peak current. Integrated ballast resistance and 250 W continuous braking power support stable energy dissipation during dynamic braking. A 750 VDC overvoltage trip adds valuable protection, making the unit a strong choice for demanding drive systems.
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Product Description:
The VM60-T is an amplifier drive unit produced by Bosch Rexroth Indramat for the VM Amplifier Drives series. Installed between the mains supply and a servo controller, it shapes the DC link, absorbs regenerated energy through an internal ballast resistor, and issues protective trips so that motion axes remain within safe electrical limits during acceleration, braking, or standby. It serves as the power-conditioning section for connected axes, helping the system manage both incoming line energy and energy returned from decelerating motors. In multi-component cabinets, this function supports steadier bus behavior and more predictable interaction between the supply section and the connected servo electronics. This layout also helps isolate abnormal bus conditions before they reach downstream motion hardware.
An overvoltage trip activates at 750 VDC, while an undervoltage trip triggers at 360 VDC; both signals disconnect the drive to prevent component stress or loss of torque. A dedicated DC-link overvoltage test point outputs 7.5 V, and a ballast lockout test point delivers 8 V so these signals can be checked during service. Dynamic energy is dissipated through the integrated resistor with a continuous braking power capability of 250 W, which supports repetitive deceleration without excessive heating. Forced convection is supplied by a fan that operates from a control line of 24 VDC, maintaining airflow whenever the cabinet temperature rises toward the 55 °C ambient trip setting and reducing heat buildup around the power components.
Current ratings indicate the permissible load on the DC bus. The module can accommodate peaks up to 150 A for short intervals, which supports rapid torque changes and brief acceleration demands from the connected axes. Under sustained conditions it delivers 60 A at 45 °C and derates to 30 A at 55 °C so semiconductor junctions stay within thermal limits during longer operating periods. A ±15 VDC service output powers encoder or relay circuits in the same enclosure, allowing auxiliary devices to operate without a separate external supply and keeping the control section electrically integrated with the drive assembly. The service output is intended for low-power auxiliary functions within the same cabinet section.
