Preliminary information
This guide is designed to provide the most complete and exhaustive information the operator needs to
correctly and safely install and operate the
SFA-5000 and SFA-10000 absolute draw-wire encoders
with DeviceNet interface
.
The cable pulling mechanism integrates a 13 x 12 bit absolute multiturn encoder (13 bits = singleturn
resolution = 8,192 cpr; 12 bits = 4,096 revolutions).
SFA-5000 / SFA-10000 cable-pulling encoder is aimed at speed and position measurements and controls
in a variety of industrial applications through the movement of a
5,000 mm (196.85”) or 10,000 mm
(393.7”)
stainless steel wire. The typical back and forth travel of the moving equipment causes the wire
to reel and unreel and thus the linear movement to be converted into a rotary motion detected by the
encoder which is coupled to the drum.
The stroke per turn is always 200 mm (7.874”), the maximum number of turns is 25 for SFA-5000 and 50
for SFA-10000.
To make it easier to read and understand the text, this guide is divided into two main sections.
In the first section some general information concerning the safety, the mechanical installation and the
electrical connection as well as tips for setting up and running properly and efficiently the SFA-5000 /
SFA-10000 cable-actuated encoder are provided.
In the second section, entitled
DeviceNet Interface
, you can find detailed information on the DeviceNet
interface. In this section the interface features and the objects implemented in the unit are fully
described.
