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Commissioning
6 Commissioning
6.1 Standard Configuration
In the standard configuration the encoder box can read
the positions from the following encoder types:
•
SSI
•
SSI-CRC
•
BiSS
•
QEP
6
6
•
Encoder Box internal encoder simulation
In the default setting the position value is transmitted
every 5 ms.
The encoder box is controlled via CAN commands.
When the encoder box is ready for operation the various
encoder sources can be selected and the input can be
started and stopped at any time.
The encoder type currently being used can be read from
the object dictionary.
6.2 Parameter Setting
6.2.1 Encoder Box Parameter List
The encoder box parameters are saved on the SD card
under the filename "MPARAM.dat".
The encoder box parameter list is loaded when the
encoder box is switched on. At the same time the software
checks that all fields exist. Missing or incorrectly written
parameters are set to 0, except the CAN-ID, which is set to
127.
The encoder box can still be started and operated
normally even when a value is missing. It is recommended
that the encoder box parameter list contains all fields,
even if these are not used or the value is set to 0.
If the encoder box parameter list is missing, the encoder
box cannot be started and error code "Err2" is shown on
the 7-segment display.
The complete encoder box parameter list can be found in
chapter 12.2 Encoder Box Parameters.
20
®
VLT
ISD Encoder Box Operating Instructions
6.2.2 Changing the Parameters
In order to modify the encoder-specific parameters, the
parameters in the encoder box parameter list must be
changed.
Proceed as follows:
CAUTION
Do not remove or replace the SD card during operation,
otherwise the contents of the SD card could be destroyed.
Switch the encoder box off and wait 10 seconds before
removing the SD card.
1.
2.
3.
4.
5.
6.2.3 CAN Settings
The encoder box has 2 different CAN lines (CAN I and
CAN II). Both of them use the same CAN-ID. See chapter
4.3.2 ISD Servo System with 2 Connection Boxesfor further
information.
CAN line II can be enabled or disabled via the SD card
parameter (General.SecondCANLineEnable).
Available CAN bit rates are 50, 125, 250, 500 and
1000 kBaud. The encoder box is preset to 500 kBaud. This
parameter can be configured via the SD card parameter
(General.BitRate) or by writing the bit rate to the
corresponding object in the object dictionary.
To activate this parameter, carry out a restart or an NMT
reset.
®
MG75F102 - VLT
is a registered Danfoss trademark
Switch the encoder box off and wait 10 seconds.
Remove the SD card.
Change the parameters on the SD card on a PC
using the text editor.
Replace the SD card in the encoder box.
Switch the encoder box on.
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