SIEMENS
6/6
Siemens NC 82 · 2017
Measuring Systems Motion Control Encoder
Built-on optoelectronic rotary encoders
Absolute encoders
6
■
Function
Absolute encoder with DRIVE-CLiQ
Absolute encoders output an absolute angular position between
0° and 360°. They operate on the same scanning principle as
incremental encoders, but have a greater number of tracks. For
example, if there are 13
tracks, then 2
13
=
8192 steps are coded
in the case of single-turn encoders. The code used is a one-step
code (gray code). This prevents any scanning errors from
occurring. After switching on the machine, the position value is
transferred immediately to the controller, travel to a reference
point is not necessary.
All absolute encoders are available in single-turn and multi-turn
versions.
Single-turn encoders
Single-turn encoders divide one rotation (360 degrees
mechanical) into a specific number of steps, e.g.
8192. A unique
code word is assigned to each position. After 360° the position
values are repeated.
Multi-turn encoders
Multi-turn encoders record the number of revolutions in addition
to the absolute position within one revolution. To do this, further
code discs which are coupled via gear steps with the encoder
shaft are scanned. When evaluating 12 additional tracks, this
means that an additional 2
12
= 4096 revolutions can be coded.
■
Technical specifications
Interface
Benefits
DRIVE-CLiQ
• Very high data transfer rates possible
• Advantages in time-critical applications
• Simple and quick automatic configuration using
electronic rating plates
• Fast and easy diagnostics with a single tool
• One interface for connecting drives as well as indirect
and direct measurement systems to the CNC.
1)
Observe the max. permissible cable length of the connected module.
Article No.
6FX2001-5.D..-1AA0
Product name
Motion Control Encoder
Product designation
Absolute encoder
with DRIVE-CLiQ
Operating voltage DC
V
p
on encoder
24 V
- 15 % + 20 %
Current consumption, approx.
• Single-turn
37 mA
• Multi-turn
43 mA
Interface
DRIVE-CLiQ
Data output
DRIVE-CLiQ
Short-circuit strength
Yes
Transmission rate
100 Mbit/s
Speed, maximum
• Electrical
14000 rpm
-
At ± 12 bit accuracy
12000 rpm
• Mechanical
- Single-turn
15000 rpm
- Multi-turn
12000 rpm
Cable length to downstream
electronics, maximum
1)
100 m
Connection
Flange outlet M12 radial
Resolution
• Single-turn
24 bit
• Multi-turn
36 bit
(24 bit single-turn +
12 bit multi-turn)
Incremental track
2048 S/R, 1 V
pp
(internal only)
Code type
• Transfer
DRIVE-CLiQ
Accuracy
± 20"
Starting torque at 20 °C
≤
0.01 Nm
Shaft loading capacity of solid shaft
•
n
≤
6000 rpm
- Axial
40 N
-
Radial at shaft extension
60 N
•
n
> 6000 rpm
- Axial
10 N
-
Radial at shaft extension
20 N
Shaft diameter
• Synchro flange
6 mm with flat face
• Clamp flange
10 mm with flat face
• Torque arm
hollow shaft
10 or 12 mm
Shaft length
• Synchro flange
10 mm
• Clamp flange
20 mm
Angular acceleration, maximum
10
5
rad/s
2
Moment of inertia of rotor
• Solid shaft
2.9 × 10
-6
kgm
2
• Hollow shaft
4.6 × 10
-6
kgm
2
S/R = signals/revolution
© Siemens AG 2016