Description; Supported Encoders; Isd Encoder Box Display - Danfoss ISD Encoder Box Operating Instructions Manual

Description

4 Description
The encoder box is intended to be used in an environment
where several servo drives require an exact position in
order to follow a specific curve profile, or to determine the
speed at which the machine is running. The position can
be read either from an externally connected encoder or
from a software encoder simulation running on the
encoder box.
•
The encoder box reads the position values from
an absolute or incremental encoder, applies a
precise timestamp and sends them periodically to
the CAN.
•
DS301 and DS406 of the CAN-CiA-Standard are
implemented in the encoder box.
•
The object dictionary is detailed in the VLT
ISD 410 Design Guide.
•
The encoder box fulfils the requirements of class
2 encoders according to the DS406 CAN standard.
•
When simulating the encoder the speed and
ramp can be set.
•
If an error or unexpected event occurs the
encoder box transmits an emergency message
(error code).
•
Every error is logged in the encoder box memory
and remains in the error history. However a
maximum of 6 errors and 6 warnings are saved
and older events are overwritten (first-in-first-out
principle).

4.1 Supported Encoders

Encoder Description
SSI All single-turn SSI encoders are compatible up to
28 bit.
SSI-CRC All single-turn SSI-CRC encoders are compatible up
to 28 bit.
The CRC Polynomial is fixed and the CRC-Check can
be enabled or disabled.
QEP All QEP encoders are compatible up to 24 bit.
BiSS All single-turn BiSS encoders are compatible up to
32 bit.
The CRC polynomial can be parameterised.
Table 4.1 Supported Encoders
®
VLT ISD Encoder Box Operating Instructions

4.2 ISD Encoder Box Display

The display shows the operating status of the encoder box.
ISD Encoder Box
Run/Err
Power
CAN I
CAN II
®
Illustration 4.1 Encoder Box Display
See chapter 7.1 Operating Display for detailed information
on the display.
®
MG75F102 - VLT is a registered Danfoss trademark
CAN-ID
4 6
2 8
RS232
0
Service
Set
Warn Err
4 4
11