Bosch Rexroth MKE Series, Руководство по планированию проекта

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7 Options and Accessories
7.1 Motor Encoder
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.
Encoder data memory 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:
Type Description
Measuring
method
System accu‐
racy
Type of position
detection
Position resolution on the
motor
G 1) Digital resolver feedback (RSF)
Induktive
±8 angular mi‐
nutes
Relative
MKE037, 047
3 x 2
13 = 24576
MKE098
4 x 2
13 = 32768
Information / Revolution
K 1)
Digital resolver feedback (RSF
with integrated multiturn absolute
encoder)
Absolute (more
than 4096 revo‐
lutions)
N
1)
Digital servo feedback (HSF)
Optical
±0.5 angular
minutes
Relative
MKE098, 118
512 x 2
13 = 4194304
Information / Revolution
P
1)
Digital servo feedback (HSF with
integrated multiturn absolute en‐
coder)
Absolute (more
than 4096 revo‐
lutions)
A 2)
Optical singleturn Hiperface en‐
coder
±80 angular
seconds
Absolute (more
than 1 revolution)
128 x 2 13 = 1.048.576
Information / Revolution
C 2)
Optical multiturn Hiperface en‐
coder
Absolute (more
than 4096 revo‐
lutions)
B 2)
Optical singleturn EnDat 2.1 en‐
coder
±20 angular
seconds
Absolute (more
than 1 revolution)
2048 x 2
13
= 16.777.216
Information / Revolution
D 2)
Optical multiturn EnDat 2.1 en‐
coder
Absolute (more
than 4096 revo‐
lutions)
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.
Resolver feedback (RSF) 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.
Project Planning Manual | Rexroth MKE Synchronous Motors Electric Drives
and Controls
| Bosch Rexroth AG 61/131
Options and Accessories