Bronkhorst®
Instruction Manual EL-FLOW® Prestige
9.17.084N
13
Never
power the instrument simultaneously from
two different power sources
(e.g. fieldbus and Plug-in Power Supply).
Doing so will damage the printed circuit board irreparably.
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, EMC requirements
can only be met using appropriate 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.
2.7
Analog / digital communication
2.7.1
Analog / local communication
If the instrument has a FLOW-BUS, Modbus or DeviceNet™ interface and is
configured for digital communication, the 9-pin D-sub connector is protected by
a dust cover. To gain access to the analog/local interface, the dust cover can be
removed by pushing its lower end.
Use a loose-end cable with a 9-pin D-sub female connector on the
instrument side (art. no. 7.03.004, 7.03.536 or 7.03.537) and refer to the
hook-up diagram for analog operation to connect the required signals.
2.7.2
Digital RS232 communication
Digital operation over RS232 can be established when using the setup shown here or
using a Bronkhorst® E-8000 readout/control unit. See section
more cabling examples. Connecting the instrument with an RS232 cable or an RS232
cable with an RS232 to USB converter to a PC enables the use of the (free) Bronkhorst®
FlowWare software for Windows, such as FlowDDE and FlowPlot. Make sure that the
serial number label indicates RS232 settings for the 9-pin D-sub connector and apply
the proper baud rate settings. If the instrument is not set for RS232 communication,
please refer to
for switching to RS232 communication settings
via the 'Configuration Mode'.
A PiPS (Plug-in Power Supply, article no. 7.03.422) is available to power a single instrument and can be used instead of the
DB9 loose-end cable, as shown in the example above. Detailed information can be found in the
PiPS manual
(document
no. 9.17.055) which can be downloaded from the
Accessories and software
section on the Bronkhorst® product pages
(
www.bronkhorst.com/products
)
2.7.3
Digital RS485 / fieldbus communication
With digital operation over RS485 or Ethernet a bus system with multiple instruments can be set up:
·
For RS485 FLOW-BUS or Modbus operation over the 9-pin D-sub connector or via an additional fieldbus driver (if
installed), see section
Basic RS485 operation (FLOW-BUS/Modbus)
·
For operation via other additional fieldbus systems (e.g. DeviceNet™, EtherCAT®), refer to section
