Elgas DATCOM, Operating Instructions Manual

Page: 117 / 228

7
Technical Description of the Device
115
7.4 Modules, Principles of Use
The supplied expansion modules are designed for installation into the slots located on the I/O
board. ELCOR device is equipped with SLOT 0 only, ELCOR plus and ELCOR plus Indexer with
SLOT 0 to SLOT 5. For each module, the manufacturer determines into which slot it can be fitted.
Each slot is fitted with a connector into which the module is inserted. The inserted module is fixed
in the device by two secure screws.
Fig. 59 Arrangement of ELCORplus slots
ATTENTION!
A trained person may install or replace modules that are not protected by a
metrological seal (i.e. outside of SLOT 0) even in potentially explosive
environments, provided that the warnings and procedures described in this
document are observed and that all safety standards applicable to products
and explosive environments are complied with.
ATTENTION!
When handling the modules in the device, first disconnect the device and
modem power supply. If external power supply is used, disconnect it first,
then disconnect the battery.
Following this procedure, the module replacements may be carried out even
in potentially explosive environments. When handling removed modules, be
careful so as not to damage them. Put plastic protective caps to the
connectors to the empty slots of the I/O board.