Product Description:

The ROL-20012-0000 is a brushless servo drive produced by Kollmorgen as part of the Silverline Brushless Servo Drives series. The module converts single-phase AC input into a controlled DC bus and modulated phase currents, allowing coordinated motion of low-inertia servo motors in indexing tables, robotics, and web-handling equipment. By closing its internal velocity loop around high-resolution encoder feedback, the unit provides precise speed regulation and torque amplification for demanding automation axes.

Input commands enter through a fully differential ±10 V analog port, and a bandwidth of 2.5 kHz lets the current loop follow rapidly changing drive signals with minimal delay. Continuous motor current is available up to 12 ADC, while transient demands are handled by a peak rating of 25 ADC. Within these limits, the velocity loop holds error to 0.2% of full scale, and the programmable gain structure supports a wide 2000:1 velocity range. The single-phase line connection simplifies cabinet wiring, and an internal monitor outputs 1 V for every 4.00 A so monitoring equipment can observe real-time torque demand. Position data is accepted as TTL single-ended encoder signals, matching many low-voltage feedback transducers used on compact servo motors.

Protective features include an overvoltage trip at 195 VDC. When this limit is reached, a shunt regulator can absorb up to 20 ADC of excess bus current, while the thermal element can dissipate 30 W continuously. Encoder frequencies are processed up to 125 kHz, supporting high-speed position loops without pulse loss. The drive measures 187 mm in height, 94 mm in width, and 108 mm in depth, allowing dense installation on DIN rail segments beside power supplies and PLC I/O modules. Clearly marked signal connectors simplify wiring, while the molded chassis routes airflow across heat-producing components.