Mounting and wiring
ELX3351
15
Version: 1.3.1
CAUTION
Observe the erection regulations
Observe the applicable erection regulations.
Attention
Protect the terminals against electrostatic discharge (ESD)
Electronic components can be destroyed by electrostatic discharge. Therefore, take the
safety measures to protect against electrostatic discharge as described in DIN EN
61340-5-1 among others. In conjunction with this, ensure that the personnel and surround-
ings are suitably earthed.
Attention
Do not place terminals on E-bus contacts
Do not place the ELX terminals on the E-bus contacts located on the right-hand side. The
function of the E-bus contacts can be negatively affected by damage caused by this, e.g.
scratches.
Attention
Protect the terminals against dirt
To ensure the functionality of the ELX terminals they must be protected against dirt, espe-
cially on the contact points. For this reason use only clean tools and materials.
Attention
Handling
• It is forbidden to insert conductive or non-conductive objects of any kind into the interior
of the housing (e.g. through the ventilation slots in the housing).
• Use only the openings provided in the housing front and appropriate tools to actuate the
spring-loaded terminal contacts on the front side for attaching connection cables to the
terminal; see chapter
• The opening of the housing, the removal of parts and any mechanical deformation or
machining of an ELX terminal are not permitted!
If an ELX terminal is defective or damaged it must be replaced by an equivalent terminal. Do not carry out
any repairs to the devices. For safety reasons repairs may only be carried out by the manufacturer.
Attention
Contact marking and pin assignment
The colored inscription labels above the front connection contacts shown in the illustrations
in the introduction chapter are only examples and are not part of the scope of delivery!
A clear assignment of channel and terminal designation according to the chapter contact
assignment to the actual terminal point can be made via the lasered channel numbers 1 to
8 on the left above the respective terminal point as well as via the laser image.
Observe any possible polarity dependency of connected intrinsically safe circuits!
