Product Description:

The HCS03.1E-W0070-A-05-NNBN is a drive controller manufactured by Bosch Rexroth Indramat within the HCS IndraDrive Controllers series. The unit serves as the central power and control interface between a three-phase mains supply and synchronous or induction servo motors used in automated machinery. By modulating voltage and current with digital feedback loops, the controller regulates motor torque and speed for positioning, conveying, and process drives in packaging, handling, and machining systems. This closed-loop behavior helps the connected motor maintain stable motion even when load conditions change during operation. It is intended for use where precise speed control and repeatable torque response are required throughout varying duty cycles.

An integrated blower provides internal air cooling, so heat is moved directly out of the power electronics without external ducting. During acceleration or regenerative events, the current drawn from the bus can rise to 70 A, a peak level that affects fuse selection and cable sizing. The controller has an enclosure protection rating of IP20, which means it must be installed inside an electrical cabinet. It connects to a three-phase mains supply rated at 3 × AC 400–500 V with a tolerance of +10% / -15%, allowing operation on common industrial networks. Drive ratings from 15 to 75 kW can be supplied, so one unit type can cover multiple motor frame sizes. Because the DC link can either deliver or absorb energy, the power section is configured for infeeding and feeding operation, which supports shared bus arrangements with regenerative braking capability.

Within the HCS03 line, this controller uses hardware version 1. The 05 voltage code matches the 500 V class used by the control electronics, DC link components, and protective elements. This arrangement supports use on a shared supply with multiple axes while maintaining consistent insulation and protection coordination across the drive system.