R60354.0009
– Index 2
6
Before commissioning
Before commissioning the device, make sure that the supply voltage fits the indications
of the name plate. Make sure that the connecting lines are not damaged and are not live
when wiring the device.
Connection and operation of the modules
As a principle, the input and output lines always must be routed as a pair, i. e. both wires of a signal must be routed in
twisted pair cables. The use of bundle wires (called control cables) is not allowed, since this could not guarantee the correct
transmission of the signal, nor the EMC features.
The cable shield must be connected at both ends, at the encoder
and
at the optical fiber transmitter, and at the optical fiber
receiver
and
at the signal processing device. To that purpose, the optical fiber transmitter and receiver are equipped with
the additional ground contacts 11 and 12.
For the modules with RS-422 output (6.LWLE.1 and 6.LWLE.4), make sure that the signal receiver has a differential input
with an input resistance of 100
– 120 Ω.
For the module 6.LWLE.5, this value must be 2 kΩ.
If there are no specific requirements for the output signals of the receiver modules (low transmission frequencies in the low
kilohertz range), the outputs may be operated as single-pole TTL or HTL outputs. However, the correct operation of this
application must be checked on a case-by-case basis, and it is not supported by the manufacturer.
Connecting the modules together may be carried out using multimode optical fiber cables 50/125 µm or 62.5/125 µm.
Single-mode optical fiber cables cannot be used.
All modules are protected against reversed polarity, which avoids any damage in case of wrong polarity.
Keep the dust protection covers of the optical transmitters and receivers, and put them back in place when no optical fiber
cable is connected to the modules, in order to avoid any soiling by dust or any other substance.
The outputs of the modules only are short-circuit proof in certain conditions; avoid imperatively short-circuits between
modules or with the earth.
Exceeding the supply voltage of the modules 6.LWLS.4 and 6.LWLE.4 above a value of
about 6 V leads to the destruction of the fuse located inside of the device and must thus
be avoided.
For the modules 6.LWLS.1, 6.LWLS.5, 6.LWLE.1 and 6.LWLE.5, this value is 33 V.
The fuse must be replaced in the manufacturer’s factory. Any attempt to repair the device
will void the guarantee.
Function of the LED
The green control LED of the transmitter must be on when the modules are correctly connected.
The green LED of the receiver must also be on or blinking.
If the LED of the module is not on, make sure that the supply voltage is applied and that it is connected with the right
polarity.
If the LED of the receiver module blinks, the optical fiber cable is not connected or broken. Make sure here that the
connector of the optical fiber cable is correctly in place and that the bayonet catch is locked.
It must also be noted that the used ST connector is indexed and has an orientation spigot which must engage the slots of
the optical emitter and of the optical receiver. Never force.
Notice
Cleaning
When switched off, the device can be cleaned using a dry cloth or a cloth moistened with a soapy solution. In no
case use aggressive or solvent-containing substances to clean the device.
Maintenance
The LWLS and LWLE modules are maintenance-free. It is forbidden for the user to carry out any repair work in
case of damages due to transportation or storage.
Guarantee
The guarantee voids if the device is opened.
CE declaration of conformity
The optical fiber modules of the series LWLE and LWLS comply wit the following standards or normative documents:
EN 55011 Klasse B
EN 61000-6-2
Kübler Group, Fritz Kübler GmbH
Schubertstrasse 47, 78054 Villingen-Schwenningen, Germany
Phone +49 7720 3903-0, Fax +49 7720 21564,
, www.kuebler.com
