Danfoss MCO 305 Design Manual page 207

MCO 305 Design Guide
The automatic generated objects can just be
deleted or reconfigured by a new differing SET
MENCODERTYPE. Also in the case of program abort
(by means of [Esc]) the objects remain existent up
to the next program start. The start of a program
deletes any formerly defined objects and initializes
new objects according to the setting of the perma-
nent parameters or at run-time according to any
temporary parameter definition inside the program
code.
32-31 Incremental Resolution
MENCODER
Range [Unit]
1 – MLONG [PPR]
Function
Set the resolution of the incremental encoder
connected to Encoder 1 interface (X56). Encoder
resolution can be found on encoder nameplate or
datasheet.
– Digital incremental encoder (32-00 = [1]): The
resolution must be set in Pulses Per Revolution.
− CAN encoder (32-00 = [3]):
Incremental encoder: Pulses per revolution
Absolut encoder: (Pulses per revolution)/4
NB!:
The parameters for the incremental
resolution (32-01 or 32-31) are always
used, even if the CAN encoder is an
absolute encoder. But a quarter of the encoder
resolution must be set for a CAN absolute encoder!
Note: Maximum frequency of the encoder signal
must not exceed 410 kHz.
Note: Parameter only visible when par. 32-30 ≠ 0
32-32 Absolute Protocol
MENCODERABSTYPE
Option
None
Hiperface
SSI
SSI with filter
Function
Specifies type of the absolute encoder connected to
Encoder 1 interface (X56).
default setting
__ Parameter Reference __
1024
[0]
[1]
[4]
[5]
[ ] value for use in communication via serial communication port
®
MG.33.L5.02 – VLT is a registered Danfoss trademark
Select None [0] if no absolute encoder is
connected.
Select Hiperface [1] if this type of an absolute
encoder is connected. The selection includes the
default encoder ID "1" and encoder parity "even".
Select SSI [4] if an absolute encoder with SSI
interface is connected.
Select SSI with filter [5] if an absolute encoder
with SSI interface is connected and the communi-
cation/signal is unstable.
Virtual master: It is possible to simulate a master
by means of APOSS command with the encoder
type [5], for example when the master position is
read via the bus. The simulated master positions
are set and read with the system variable
SYSVAR[4105].
NB!:
The MIPOS command can not be used
with absolute encoder.
Note: Selection [1] Hiperface encoder is available
with version 6.7.40.
32-33 Absolute Resolution
MENCODERABSRES
Range [Unit]
1 – MLONG [PPR]
Function
Note: Parameter only visible when par. 32-32 ≠ 0
32-34 Absolute Encoder Baudrate X55
MENCODERBAUD
Option
600
1200
2400
4800
9600
19200
38400
Function
Select the baud rate of the attached encoder.
Note: This parameter is available with firmware
version 6.7.40.
8192
[0]
[1]
[2]
[3]
[4]
[5]
[6]
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