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DOK-MOTOR*-MSK*EXGIIK3-PR09-EN-P
Synchronous Servomotors MSK For Potentially Explosive Areas
5.3
Technical data encoder for MSK motors
Designation
Interface
Encoder design
Distinguishable revolutions
Signal periods
System accuracy
Output signal
Maximum encoder speed
Current consumption max.
Power supply voltage
Calculate position resolution
Encoder Singleturn S1, S2
Encoder Multiturn absolute M1,
Symbol
Unit
S1
Singleturn abso‐
lute
1
angular
sen‐
conds
min
-1
12,000
I
mA
Encoder
VCC
En‐
V
coder
Tab. 5-2:
MSK - technial data encoder
The actual position resolution can be done for every encoder type according
to the following calcuation.
Calculation example: "Position resolution for M1 encoder"
from table:
Distinguishable revolutions: 4,096
Number of lines: 128
from documentation about the drive controller:
Encoder resolution
Position resolution = Number of lines × encoder resolution × distinguishable
revolutions
Position resolution = 128 × 2
1)
Encoder resolution depends from the connected controller.
These encoders permit absolute, indirect position recording within one me‐
chanical rotation. The encoders replace separate incremental encoders on
the motor.
After a power failure or after the first POWER ON, the axis must
always at first be moved to its home position.
Exception: Applications in which the maximum working path is
within one mechanical rotation of the motor.
These encoders permit absolute, indirect position recording within 4,096 me‐
M2
chanical rotations. The encoders replace a separate absolute value encoder
on the motor. With this encoder version, the absolute position of the axis is
preserved even after a switch-off.
M1
Hiperface
Multiturn absolute
4,096
128
±120
1Vss
9,000
60
7...12
1)
: 13 bit
13
× 4,096 = 4.294.967.296 information
Bosch Rexroth AG
Technical data
S2
M2
EnDat 2.1
Singleturn abso‐
Multiturn absolute
lute
1
4,096
2,048
±20
15,000
12,000
150
250
3.6...14
35/175
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