Product Description:

The TCM 2.1-02-7 capacitance module is manufactured by Bosch Rexroth Indramat within the TCM Capacitance Modules series. This module stores and releases energy on the DC link of Indramat drive cabinets, limiting voltage ripple and absorbing regenerative peaks during fast deceleration cycles in industrial automation systems such as machining centers and material-handling robots. By providing a low-impedance reservoir, it stabilizes the intermediate circuit so connected inverters see a more consistent bus voltage, which helps drive response and reduces stress on the power supply section.

The module has a capacitance of 2 mF, which lets it store charge and smooth transient voltage swings on the DC link. The device can handle a continuous link power of 30 kW, so it suits medium-sized servo groups without approaching thermal limits. The housing is 208 mm high, 105 mm wide, and the main aluminum body is 355 mm long, which helps determine the space needed inside the cabinet. A tightening torque of 2.5 Nm on the terminal screws helps keep the electrical connection secure and reduces the chance of added contact resistance. The connection layout also provides enough spacing for insulated lugs, and the 10 mm² lead cross-section supports the rated current path through the module.

Lead assemblies may be routed up to 1 m from the drive stack, which helps limit inductive overshoot when large pulse currents flow. The copper posts use a M5 thread, allowing ring terminals to be bolted on directly without adapters. A minimum clearance of 80 mm must be maintained above the ventilation slots so convection cooling can move air freely. Free airflow above the housing supports heat dissipation during repeated charge and discharge cycles. This mounting space also helps prevent warm exhaust air from collecting directly over the module.