Installing The External Accessories; Installing Circuitry - Festo ELGA-TB-G Instrucciones De Utilizacion

ELGA-TB-G, ELGA-TB-RF
5.1.3

Installing the external accessories

To protect the end positions against uncontrolled overtravel:
• Check whether proximity sensors are necessary (hardware limit switches).
If proximity sensors are used as limit switches:
• Preferably use proximity switches with normally-closed function.
These will protect an ELGA against overtravel of the end position in case of a broken proximity
switch cable.
If proximity switches are used as reference switches:
• Use proximity switches that correspond to the input of the controller being used.
• Use inductive proximity sensors with switch lug aC (
used).
Attachment
in the grooves 9 (
Fig. 2)
Tab. 4
• Avoid external influences from magnetic or ferritic parts in the vicinity of the proximity switches
(minimum distance of 10 mm from the slot nuts).
To avoid contamination:
• Use slot covers in all unused grooves.
5.2

Installing circuitry

Note
If the component is to be used for safety-critical applications, additional measures are
necessary. In Europe, for example, the standards listed under the EC Machinery Direct-
ive must be observed.
Without additional measures in accordance with statutory minimum requirements, the
product is not suitable for use in safety-related sections of control systems.
Festo – ELGA-TB-G, ELGA-TB-RF – 1209a English
Assembly instructions of the accessory
with mounting bracket aD
aC
9
aD
aC
29