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Chapter 3 - Device Profile
CD1-k – CANopen Communication Profile
3.13.11 – ENCODER OUTPUT
3.13.11.1 - Object 3487h: Encoder Emulation Output
Index 3487h
Name
Encoder Emulation Output
Object Code
RECORD
Number of Elements
6
Value Description
Sub Index
1
Description
Encoder Output Resolution
Data Type
Unsigned16
Object Class
all
Access rw
PDO Mapping
No
Value Range
Default Value
eeprom
The
Encoder output resolution
parameter defines the encoder resolution on channels A and B of the encoder
position output for one revolution of the motor shaft. Binary and decimal values are both accepted. The maximum
encoder resolution per revolution is limited by the motor speed as shown in the table below:
Maximum motor speed (rpm)
up to 1600
up to 3200
up to 6400
up to 12800
up to 25000
Encoder Output Resolution (ppr)
512 to 16384
512 to 8192
512 to 4096
512 to 2048
512 to 1024
The resolution value defined in the
Encoder output resolution
parameter can be divided by 2, 4 or 8 by the
Encoder output division ratio
parameter.
Sub Index
2
Description
Encoder Output Division Ratio
Encoder Division Ratio = 1 / 2
[3480h]
Encoder Output Resolution = Encoder Feedback Resolution x Encoder Division Ratio
= [308Fh] / 2
[3480h]
Data Type
Unsigned16
Object Class
all
Access rw
PDO Mapping
No
Value Range
0..3
Default Value
eeprom
Write Condition
Drive disabled.
Sub Index
3
Description
Encoder Output Deadband
Data Type
Unsigned16
Object Class
all
Access rw
PDO Mapping
No
Value Range
1..4095
Default Value
eeprom
The
Encoder Output deadband
parameter introduces a deadband at standstill around the current motor shaft
position in order to avoid oscillations of +/- 1 encoder edge on channels A and B. The value 4095 corresponds to
1/16 of the motor shaft revolution.