Interface To The Drives; Digital Drives; Introduction - HEIDENHAIN iTNC 530 Service Manual

20 Interface to the Drives

20.1 Digital Drives

20.1.1 Introduction

Digital drive systems are also referred to as inverter systems.
For digital drives three-phase ac motors are used.
The most important motors are:
The digital servo amplifiers are controlled via so-called PWM interfaces (PWM = Pulse Width
Modulation).
The position, speed and current controllers are located in the HEIDENHAIN control.
Following PWM interfaces are located on the CC 422 / 424 controller unit
(every digital axis/spindle has its own PWM ribbon-cable connector):
Drive control board
of CC 424
1
1
1
1
1
1
2
2
2
2
May 2006
Synchronous motors (e.g., HEIDENHAIN axis motors)
Asynchronous motors (e.g., HEIDENHAIN spindle motors)
Linear motors
Torque motors
X51 to X56
X57 to X64 (depending on the expansion stage)
Note
On the CC 424 (not CC 422), the speed encoder inputs are firmly assigned to the PWM
outputs. --> See following table!
MP 112.x for the variable assignment of the speed encoders is not available for the CC 424!
PWM output
(MP120.x/MP121.x)
X51
X52
X53
X54
X55
X56
X57
X58
X59
X60
Caution
The service on the CC 424 and CC 422 is different.
Ensure to use the correct instructions!
Speed encoder input
X15
X16
X17
X18
X19
X20
X80
X81
X82
X83
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