UD52 - SIN-COS Option Module - CONTROL TECHNIQUES

The UD52 SIN-COS encoder small option module is an interface module for installation in a Unidrive. The UD52 operates with encoders having 256, 512, 1024, 2048 or 4096 lines per revolution, and has a maximum operating frequency of 102.4kHz (3000RPM with a 2048-line encoder).

The UD52 can be used in a Drive operating in either the Closed-loop Vector or Closed-loop Servo mode in order to obtain speed feedback and very highresolutionshaftposition. The UD52 is fully compatible with the following Stegmann SIN-COS encoders:
SCS60, SCM60, SCS70, SCM70

These encoders are compatible with the two-wire serial communications port in the UD52.

The UD52 can determine the absolute position within a revolution of a single-turnencoder,orinmanyrevolutionsofamulti-turnencoder. Unlike the case for a standard encoder, which must be rotated past its marker pulse in order to obtain absolute-position information, absolute-position information from a (suitable) SIN-COS encoder is obtained when the Drive is powered-up.

Speed and position information is displayed in parameters which can be read on the Drive display and/or via serial communications.

When a UD52 is fitted in the Drive, the Drive automatically uses the SIN-COS encoder as speed and position feedback for the motor. Alternatively,a standard quadrature encoder can be used for speed and position feedback, and the SIN-COS encoder used as an incremental reference.

The UD52 has simulated encoder outputs which normally use the SIN-COS encoder as the source, but can be reconfigured to use the main encoder (Encoder 1) connected to the 15-way D-type on the Drive as the source. These outputs produce quadrature A/B signals corresponding to the line counts from the source encoder. Also,these outputs can be configured for frequency and direction (F/D) signals.