Product Description:

The 07.S4.D30-349V belongs to the S4 Combivert Servo Controllers series produced by KEB. As a three-phase servo controller, it conditions line power and manages feedback to regulate synchronous or induction motors used in positioning, conveying, or metering tasks on automated lines. The unit integrates signal conversion, current regulation, and fault monitoring so that a drive can react quickly to command changes while remaining inside electrical and thermal limits.

The controller samples command voltages through a 12-bit analog input channel, allowing 4096 discrete levels that improve low-speed accuracy. Control electronics are supported by a 24 V DC internal supply, while an external 1 A feed keeps logic alive during main power removal. Reference signals are generated at 10 V, giving proportional setpoint scaling for speed or torque loops. Wiring is sized for a 1.5 mm² line cross-section, and the power stage is designed for three-phase operation. The rated input current is 3 A; under steady demand this is converted to a regulated output of 2.7 A, yet the inverter can deliver an 8.5 A surge for 200 ms to overcome inertia or static friction. Internally, only 60 mA is drawn by auxiliary circuits, and the incoming supply can be protected with a 10 A line fuse that matches the converter’s fault withstand capacity. When the drive is motionless with torque applied, stall current equals the 2.7 A continuous value.

A thermal load of 95 W must be removed from the cabinet, and convection is acceptable because the housing carries an IP20 rating that requires installation inside an enclosure. Output terminals support motor leads up to 50 m; beyond this length, reflected capacitance may disturb current loops. This current capacity and the brief surge interval support short acceleration periods without placing a sustained load on the cabinet supply.