Lika SMA1 User Manual

User manual
SMA1
Description
This manual describes the products of SMA1 series.
The purpose of these sensors is to measure linear
displacements on
automation systems. The measurement system
includes a magnetic tape and a magnetic sensor.
The tape is magnetized with magnetic north-south
poles. The poles are coded thus the magnetic tape is
absolute. As the sensor is moved along the magnetic
tape, it detects the displacement and produces an
absolute SSI output or BiSS output signal ( B -mode
or C-mode) and an additional 1Vpp sin-cosine signal
for speed feedback.
The sensor has to be matched with MTA1 magnetic
tape.
Chapters
1 Safety summary
2 Identification
3 Mounting instructions
4 Position errors diagnostics
5 Electrical connections
6 SSI interface
7 BiSS B-mode interface (SMA1-.../S682)
8 BiSS C-mode interface
9 1Vpp outputs
10 Dimensional drawing
11 Maintenance
12 Troubleshooting
MAN SMA1 E 2.3.doc
industrial machines
SMA1
1 - Safety summary
• observe the professional safety and accident prevention
regulations applicable to your country during device
installation and operation;
• installation has to be carried out by qualified personnel
only, without power supply and stationary mechanics
parts;
and
• the device must be used only for the purpose appropriate
to its design;
• high current, voltage and rotating parts can cause serious
or fatal injury.
• switch OFF the voltage before connecting the device;
• connect according to the chapter "Electrical connections";
• according to the 89/336/CEE norm on
electromagnetic
precautions must be taken:
- before handling and installing, discharge electrical charge
from your body and tools which may come in touch with
the device;
- power supply must be stable without noise, install EMC
filters on device power supply if needed;
- always use shielded and twisted cables if possible;
- avoid cables runs longer than necessary;
- avoid running the signal cable near high voltage power
cables;
- mount the device as far as possible from any capacitive or
inductive noise source, shield the device from noise source
if needed;
- minimize noise by connecting shield or connector housing
to ground (GND). Make sure that ground (GND) is not
affected by noise. The shield connection point to ground
can be situated both on the device side and on user's side.
The best solution to minimize the interference must be
carried out by the user.
• install according to the chapter "Mounting instructions"
with stationary mechanics parts;
• do not disassemble the device;
• do not tool the device;
• do not subject the device to knocks or shocks;
• protect the system against solvents and substances
damaging it;
• respect the environmental characteristics of the product;
• be sure that the system is mounted where hard or sharp
objects (e.g. metal chips) do not come into contact with
the magnetic tape and the bottom of the sensor head. If
these conditions cannot be avoided provide a wiper or
pressurized air.
1
Safety
Electrical safety
compatibility, following
Mechanical safety
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