R911265757
The R911265757 (KDA 3.3-150-3-A0S-W1) is a digital drive controller produced by Bosch Rexroth Indramat. It is compatible with 2AD and 1MB motors from Indramat and features high stiffness, a wide speed range, and advanced positioning functionalities. Boasting a rated output current of 150 Amps and a continuous current of 90 Amps, the drive uses an analog 10 Volt speed command. It has an auxiliary serial interface supporting RS-232 protocol but does not support auxiliary encoder input. The controller is cooled via forced air from an integrated blower, requiring 220 Volts AC. The synchronization parameters, stored on the AS module, align the drive with the motor and the machine tool.
The R911265757 (KDA 3.3-150-3-A0S-W1)'s operating software and parameters are situated on the AS module, allowing simple transferring of the module to a new drive in case of replacement, thus reducing downtime. These parameters on the AS module can be duplicated on separate machines using a parameter duplicating adaptor or a serial interface and PC. As per DIN 40 040, the controller tolerates maximum humidity corresponding to class F. It operates smoothly in various climates but requires periodic checks to prevent condensation in environments with relative humidity above 70%.
