February 2012 21 – 327
21 Interfaces to the drives
21.1 Digital PWM interface
21.1.1 Introduction
HEIDENHAIN controls feature position, speed and current controllers.
The "result" of position, speed and current control - i.e. the controller output - is pulse-width modulated.
Digital servo amplifiers are controlled via PWM interfaces (PWM = pulse-width modulation).
Digital drive systems are also referred to as inverter systems.
For digital drives three-phase ac motors are used.
The most important motors are:
îš„ Synchronous motors (e.g., HEIDENHAIN QSY axis motors)
îš„ Asynchronous motors (e.g., HEIDENHAIN QAN spindle motors)
îš„ Linear motors
îš„ Torque motors
PWM outputs
of CC 61xx
The PWM interfaces of the UEC 11x controller unit are located inside the unit.
CC 6106 CC 6108 CC 6110
îš„ X51 to X56 îš„ X51A to X54A
(controller basic board A)
îš„ X51B to X54B
(controller basic board B)
îš„ X51A to X54A
(controller basic board A)
îš„ X51B to X54B
(controller basic board B)
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