Options And Accessories; Motor Encoder - Bosch Rexroth MKE Series Project Planning Manual

Project Planning Manual | Rexroth MKE Synchronous Motors
7

Options and Accessories

7.1

Motor Encoder

Encoder data memory
Type Description
G 1) Digital resolver feedback (RSF)
Digital resolver feedback (RSF
K 1) with integrated multiturn absolute
encoder)
N 1) Digital servo feedback (HSF)
Digital servo feedback (HSF with
P 1) integrated multiturn absolute en‐
coder)
Optical singleturn Hiperface en‐
A 2)
coder
Optical multiturn Hiperface en‐
C
2)
coder
Optical singleturn EnDat 2.1 en‐
B 2)
coder
Optical multiturn EnDat 2.1 en‐
D 2)
coder
Resolver feedback (RSF)
To control the motor speed and / or to position the motor, the drive control device
must know the current motor position.
To achieve this, the integrated encoder system provides the drive control device
with the corresponding signals. The drive control devices are capable of trans‐
mitting the positional value thus determined to a superordinate CNC or SPS.
The encoder electronics is equipped with a data memory where the motor type
name, the control loop parameters and the motor parameters are filed. Rexroth
drive control devices read out this data. This ensures
● quick and easy startup,
● adaptation between the motor and the drive control device without the risk
of damage to the motor.
The following encoder variants are available for MKE motors:
Measuring System accu‐
method racy
±8 angular mi‐
Induktive
nutes
±0.5 angular
minutes
±80 angular
Optical seconds
±20 angular
seconds
1) for drive control devices Diax 04, EcoDrive 03, DuraDrive
2) for IndraDrive drive control devices
Fig.7-1: MKE motor encoder
Further information and details on the encoder types are described in the fol‐
lowing.
Provided for relative indirect position detection. Replaces separate incremental
encoders on the motor.
Characteristics of the resolver feedback: After a voltage failure or
after the first POWER ON, the axis must first always be moved to
its reference point, before the processing can begin.
Electric Drives | Bosch Rexroth AG
and Controls
Options and Accessories
Type of position Position resolution on the
detection motor
MKE037, 047
Relative
3 x 2 13
Absolute (more
MKE098
than 4096 revo‐
4 x 2 13
lutions)
Information / Revolution
Relative
MKE098, 118
Absolute (more
512 x 2
than 4096 revo‐
Information / Revolution
lutions)
Absolute (more
than 1 revolution)
128 x 2
Absolute (more
Information / Revolution
than 4096 revo‐
lutions)
Absolute (more
than 1 revolution)
2048 x 2
Absolute (more
Information / Revolution
than 4096 revo‐
lutions)
61/131
= 24576
= 32768
13 = 4194304
13 = 1.048.576
13 = 16.777.216