Product Description:

The DKC22.3-016-7-FW is a drive controller built by Bosch Rexroth Indramat for the DKC Drive Controllers series. As an EcoDrive unit, it sits between the machine control system and the servo motor to modulate speed, torque, and position commands in automated assembly lines, packaging stations, and material-handling cells. The controller executes these functions without forced ventilation and relies on natural convection to remove internally generated heat.

An internal DC link operates at 700 V, giving the power section the headroom required for fast energy exchange with connected motors. The supply network can deliver up to 0.6 kW of bus power at 480 V, while a storage capacitor bank of 0.135 mF smooths voltage ripple during load transitions. The inverter stage supplies a continuous 16 A to the motor windings, and this current contributes directly to motor torque. Steady-state losses equal 80 W, a figure that determines enclosure temperature rise under maximum load. Additional electrical values include a DC-bus energy ceiling of 1.0 kWs, a maximum bleeder energy dissipation of 1.0 kWs, and an overvoltage clamp that intervenes at 45 V for 1 ms to protect low-voltage logic.

A charging path limited to 2 A lets the bus capacitors energize gradually through a 240 ohm soft-start resistor, avoiding inrush current when the cabinet powers up. The controller’s electromagnetic behavior is influenced by a coupling capacitance of 100 nF, which helps shunt high-frequency noise to chassis ground. Regenerated energy is routed to a bleeder resistor that can absorb bursts of up to 2.7 kW, keeping the link voltage within safe limits during rapid deceleration. For fast torque updates, the inverter can switch at 8 kHz and deliver output frequencies as high as 800 Hz. The 3.2 kg module is classified as design 3 with interface option 22 and draws 16 W of control power from auxiliary supplies.