Product Description:

The TCM 1.1-04-W0 is a capacitance module produced by Bosch Rexroth Indramat for use in DC-link circuits of multi-axis drive systems. As a member of the TCM Capacitance Modules series, it connects directly to the intermediate circuit of compatible power supplies and inverters, storing electrical energy that smooths voltage peaks and supports brief regeneration events. By buffering the DC bus, the module reduces stress on the supply transformer and helps limit overvoltage trips during deceleration or short mains disturbances. This function is useful in automation cabinets where several servo drives operate from a shared supply and exchange energy through a common DC link.

The module provides an energy reservoir of 4 mF, allowing stored charge to be exchanged with the drive group during transient demand. Its housing measures 355 mm in height, 208 mm in width, and 105 mm in depth, so adequate mounting space must be left on the backplate and around adjacent components. Electrical connections are made on copper studs tapped to M5, and each power lug should be tightened to 2.5 Nm to keep the joint secure during thermal cycling. The rated capacitance is enclosed in an aluminum housing that relies on natural convection through ribbed sides, so airflow around the module should remain unobstructed.

For field wiring, the terminal block accepts conductors up to 6 mm², which suits typical DC-link wiring used in motion-control cabinets. A minimum service clearance of 80 mm above the terminals is required so cables can be bent without exceeding their minimum radius and so fastening hardware remains accessible during installation. The module belongs to the TCM Capacitance Modules line and is intended for cabinet layouts that need added DC-bus energy storage without forced-air cooling. Proper spacing above the terminals also helps maintain orderly cable routing and reduces the chance of contact between adjacent conductors in dense enclosures.