BRONKHORST ES-FLOW 1 C Series, Инструкция по эксплуатации

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Bronkhorst®
Instruction Manual ES-FLOW™ 1xxC 9.17.153A 37
8
Troubleshooting and service
Errors and warnings
·
See the troubleshooting guide for general LED indications that signify errors or warnings (red
l
) and possible causes.
·
Most other indications are specific to the installed communication interface; consult the according interface manual for
a list of all indications.
·
Error and warning information can also be found by connecting the instrument to FlowDDE and FlowPlot. FlowDDE
puts all errors and warnings on the console screen; FlowPlot provides several specific alarm and counter indicators. See
also section Digital communication .
General problems
· 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.
8.1 Common issues
Symptom Possible cause Corrective action
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 )
Invalid baud rate Make sure instrument baud rate matches
master/application baud rate
Other Reset instrument and/or restart master. If
problem persists, contact your Bronkhorst
representative
No output signal No power supply ·
Check power supply
·
Check cable connection
·
Check cable hook-up
Invalid control mode (instrument
accepts no setpoint)
Check control mode (see Special parameters )
No setpoint given or setpoint too
low
Valve(s) in default state (normally
closed)
Check if valves are in default/safe state; solve
cause if necessary (see Default valve state )
Inlet pressure or differential
pressure too low
Increase inlet pressure
Piping, filters and/or control valve
clogged or blocked
Clean fluid system (flush with clean, dry air or a
non-aggressive cleaning liquid, e.g. ethanol or
isopropyl alcohol)
Sensor failure Contact your Bronkhorst representative
Mode/MOD and Error/NET LEDs
blinking red alternately, no
communication
Initialization error Restart instrument. If problem persists, contact
Bronkhorst
Red LED lit continuously,
measurement readout irregular
Gas in measuring tube Fill fluid lines homogeneously with process
liquid (see First use )
Inlet pressure unstable (flow rate
pulsating)
Eliminate pressure fluctuations, e.g. by
installing a pressure regulator