BRONKHORST mini CORI-FLOW M1 Series, Инструкция по эксплуатации

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Bronkhorst®
Instruction Manual mini CORI-FLOW™ M1x 9.17.050O 45
5
Troubleshooting and service
·
Electronic problems can be traced by restarting the equipment.
·
If the equipment starts up normally, the measurement and control behavior can be checked by applying fluid pressure.
·
To track down problems in the fluid system, depressurize the fluid system and disconnect the suspected unit from the
process line. Dirt or clogging might be quickly detected by visual inspection on disassembled fluid connections.
If you suspect leakage, do not disassemble the device for inspection, but contact your Bronkhorst representative for service
or repairs.
5.1 Errors and warnings
See LED indications for an explanation of all possible LED indications.
In case of problems during operation, error and warning information can be found in FlowDDE and FlowPlot. FlowDDE
puts all errors and warnings on the console screen; FlowPlot provides several alarm and counter indicators. See also section
Digital RS-232 operation .
5.2 Restoring factory settings
In case changes to the instrument configuration leads to non-recoverable erroneous behavior, the instrument can be reset
to the pre-configured factory settings. This can be done with the following methods:
·
with the multifunctional switch (see Multifunctional switch )
·
with the restore function of a Bronkhorst® readout and control unit (BRIGHT, E-8000)
·
via RS-232 communication, with the Restore settings function in FlowPlot
Changes made to the network settings (bus address, baud rate, parity) will not be restored by a factory reset.
5.3 Common issues
Symptom Possible cause Action
Red LED glows continuously No liquid in measuring tube Flush instrument with process fluid prior to
starting measurement and control (see First
use )
Slug flow (combined gas and
liquid flow)
Make sure the measuring tube only contains
either gas or liquid (see First use )
Hardware error Return equipment to factory
No fieldbus communication No power supply
· Check power supply
·
Check cable connection
·
Check cable hook-up
Invalid node address Change node address (see Network
configuration )
Other Reset instrument and/or restart master. Contact
Bronkhorst if problem persists.
No output signal No power supply
· Check power supply
·
Check cable connection
·
Check cable hook-up
Inlet pressure or differential
pressure too low
Increase inlet pressure
Piping, filters and/or control valve
clogged or blocked
·
Clean system (flush with clean, dry air or a
non-aggressive cleaning liquid (e.g. ethanol
or isopropyl alcohol)
·
For external proportional control valves:
supply 0…15 Vdc and operational inlet
pressure to valve and slowly increase