Product Description:

Kollmorgen's S406AM-CA is a servo drive in the S400 Servo Drives series. As a master module, it interfaces between a motion controller and a permanent-magnet servo motor, regulating current and voltage to match command profiles. Within an automated cell, it provides closed-loop torque and velocity control so actuators follow programmed paths with repeatable accuracy. This arrangement helps the axis respond quickly to changing loads and direction changes during continuous machine cycles.

The drive's command interface accepts differential analog velocity or torque references with a resolution of 14-bit, allowing fine scaling of motion commands over an input span of ±10 V. Internally, current loops are updated at 8 kHz, so phase currents are corrected every 125 microseconds to reduce following error during rapid changes in speed or load. The power stage accommodates a DC link derived from mains supplies between 230 to 400 V and delivers a continuous motor phase current of 6 A rms while dissipating 60 W at this load. A quiescent loss of 15 W keeps standby heating low. With a minimum load inductance of 7.5 mH and a form factor of 1.01, the drive can pair with low-resistance windings without excessive ripple. The housing is 100 mm wide, 240 mm deep, and 267 mm tall with the cooling fan installed, and the unit weighs 3 kg for compact panel mounting.

In dynamic cycles, the integrated IGBT bridge can supply up to 12 A rms for 5 seconds to accelerate heavier inertial loads before returning to its continuous rating. The built-in brake power supply sources 1.5 A, so an attached motor brake can release reliably before the axis starts moving. Load matching remains stable with inductances up to 40 mH, which supports use with a range of compatible motor windings. If the DC link rises to 750 V, the drive initiates a controlled shutdown to protect the power section from over-energy conditions.