Description of the motors
2.6 Mounting and options
1FK7 G2 synchronous motors
38
Operating Instructions, 05/2021, A5E50907562B AA
2.6.4.2
Technical data of the incremental encoders for 1FK7 motors
Description
This encoder senses relative movements and does not supply absolute position information.
In combination with an evaluation logic, a zero point can be determined using the integrated
reference mark, which can be used to calculate the absolute position.
The encoder outputs sine and cosine signals. These signals can be interpolated using
evaluation logic (usually 2048x) and the direction of rotation can be determined. In the
version with a DRIVE-CLiQ interface, this evaluation logic is already integrated in the encoder.
Function and technical data
•
Angular measuring system for commutation
•
Speed actual value sensing
•
Indirect incremental measuring system for the position control loop
•
One zero pulse (reference mark) per revolution
Table 2- 8
Technical data for incremental encoders
Encoders
Code
Operating
voltage
Max. cur-
rent drain
A-B track: Resolu-
tion incremental
(sin/cos periods
per revolution)
C-D track: Ro-
tor/commutation
position (sin/cos
periods per revolu-
tion)
Angular
error
without DRIVE-CLiQ interface
1FK703 to 1FK710:
Incremental encoder sin/cos 1
Vpp, 2048 S/R with C and D
tracks
IC2048S/R
5 V ±5%
140 mA
2048 S/R (1 Vpp)
1 S/R (1 Vpp)
±40"
with DRIVE-CLiQ interface
1FK703 to 1FK710:
Incremental encoder 22-bit
(4,194,304 resolution, 2048 S/R
encoder-internal) + 11-bit
commutation position
IC22DQ
24 V
180 mA
4,194,304
(=22 bits)
2048 (=11 bits)
±40"
Mech. speed limit for all incremental encoders: 12000 rpm
Note: The "Singleturn absolute value encoders" are other encoders which can be used as incremental encoders in the
SINAMICS drive system.
