turck BL67 - Mounting the Electronics Modules; Prevention of False Mounting

Mounting and wiring
D300529 0115 - BL67 I/O modules13-4
13.2.3 Mounting the electronics modules
Please observe:
1 Th
e correct base module must have been previously mounted onto the mounting rail.
2 Electronics modules are fitted onto the previously mounted and wired base modules.
Method:
1 Pr
ess the electronic module squarely onto the base module
2 and tighten the two screws on the top of the electronic module.
13.2.4 Prevention of false mounting
A mechanical coding element prevents an electronics module from being mounted onto the wrong
base module – for example, following a defect in an electronics module. The coding element consists
of two pieces and is supplied with every electronics module.
The complete coding element is mounted on the underside of each electronics module. When mount-
ing the electronics module for the first time, the lowe
r part of the coding element is automatically
inserted into the recess provided in the base module.
NOTE
NOTE
Before plugging the electronics modules,
it is advisable to blow-clean the station with com-
pressed air. This prevents dust and grains of dirt from contaminating the contacts, which can
negatively influence the communication on the station.
ATTENTION!
Deficient screwing
Protectio
n class IP67 not guaranteed
 Tighten the screws in the base modules correctly.
ATTENTION!
Damaged sealing
Protectio
n class IP67 not guaranteed
 Check the sealing t the lower side of the electronic module housing for correct fit and dam-
age.
When plugging electronics modules for the first time, an initial resistance must be overcome.
This is because the lower part of the coding element has to be pressed into the base module.