Bronkhorst®
Instruction Manual MI Series Industrial mini CORI-FLOW™
9.17.120A
12
2.4
Electrical connection
Electrical connections must be made with standard cables or according to the applicable hook-up diagrams. Make sure that
the power supply is suitable for the power ratings as indicated on the serial number label (see
), and that double
or reinforced insulation is used for the power supply. For use in fieldbus systems, follow the instructions of the cable
supplier for the specific fieldbus system.
The device described in this document contains electronic components that are susceptible to
electrostatic discharge
. In
order to prevent damage, proper handling procedures must be followed during installation, (dis)connecting and removing
the electronics.
The device carries the CE-mark and is
compliant with the concerning EMC requirements
. However, compliance with
the EMC requirements is not possible without the use of proper cables and connector/gland assemblies. Bronkhorst
recommends the use of their standard cables. These cables have the right connectors and loose ends (if any) are marked to
help prevent wrong connection. When using other cables, cable wire diameters must be sufficient to carry the supply
current, and voltage loss must be kept as low as possible. When in doubt, contact your Bronkhorst representative.
When connecting the product to other devices, be sure that the integrity of the shielding is not affected;
always use
shielded cabling for signals and communication and do not use unshielded wire terminals.
Never
power the instrument simultaneously from
two different power sources
(e.g. fieldbus connection and Plug-in
Power Supply). Doing so will blow the power line fuses on the wiring terminal box.
Always isolate the electrical power before connecting or disconnecting equipment.
2.4.1
Custom cable gland connection
The instrument cover may only be opened in a dry and non hazardous environment. Before opening the cover, make sure
that the operating environment is perfectly safe and that the electrical components cannot be affected by moisture or
aggressive atmospheric components.
To connect an instrument with custom gland connectors, the cover has to
be removed in order to access the wiring terminal box. Unscrew the 4
hexagon screws on top of the instrument to remove the cover.
A detailed hook-up legend is printed on two labels on the inside of the
cover. Refer to the applicable hook-up diagram for information about
connecting the right signals.
All connections are fitted with 2.5 mm
2
screw terminals, except where specified otherwise.
