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MVME7100 Single Board Computer Installation and Use (6806800E08A)
Safety Notes
20
Cabling and Connectors
Product Damage
RJ-45 connectors on modules are either twisted-pair Ethernet (TPE) or E1/T1/J1 network
interfaces. Connecting an E1/T1/J1 line to an Ethernet connector may damage your
system.
z Make sure that TPE connectors near your working area are clearly marked as
network connectors.
z Verify that the length of an electric cable connected to a TPE bushing does not
exceed 100 meters.
z Make sure the TPE bushing of the system is connected only to safety extra low
voltage circuits (SELV circuits).
If in doubt, ask your system administrator.
Battery
Board/System Damage
Incorrect exchange of lithium batteries can result in a hazardous explosion.
When exchanging the on-board lithium battery, make sure that the new and the old
battery are exactly the same battery models.
If the respective battery model is not available, contact your local Emerson sales
representative for the availability of alternative, officially approved battery models.
Data Loss
Exchanging the battery can result in loss of time settings. Backup power prevents the
loss of data during exchange.
Quickly replacing the battery may save time settings.
Data Loss
If the battery has low or insufficient power the RTC is initialized.
Exchange the battery before seven years of actual battery use have elapsed.
PCB and Battery Holder Damage
Removing the battery with a screw driver may damage the PCB or the battery holder. To
prevent damage, do not use a screw driver to remove the battery from its holder.