BRONKHORST FLEXI-FLOW Compact, Инструкция по эксплуатации

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Bronkhorst®
Instruction Manual FLEXI-FLOW™ Compact 9.17.158A 18
3.4.2 Common issues
Symptom Possible cause Corrective action
No 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
)
Valve(s) in default state (normally
closed)
Check if connected valves are in default 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)
Sensor failure Contact your Bronkhorst representative
Control behavior unstable Measurement disturbed by
vibrations
·
If possible, avoid installation in close
proximity of mechanical vibration
· Reduce sensitivity to vibrations by using a
mass block, shock absorbers, and flexible
tubing
Inlet pressure unstable Install pressure regulator or increase buffer
volume between controlling instruments
Inlet and/or outlet pressure too
high or too low
Adjust pressure and/or set instrument pressure
in accordance with actual process pressure
Wrong process gas selected Select correct process gas
Wrong controller settings Adjust settings (e.g. with FlowSuite)
Control valve damaged Contact your Bronkhorst representative
No flow (sending a setpoint has no
effect)
No fluid supply Check upstream components for obstruction,
e.g.:
· fluid lines
·
valves
·
filters
Wrong control mode selected ·
Check parameter Control mode
·
Make sure instrument accepts setpoint from
actual setpoint source (bus)
Valve(s) in default state (normally
closed)
Check if valves are in default state; solve cause
if necessary (see Default valve state )
Inlet pressure or differential
pressure out of bounds
Set inlet pressure to a value within
specifications
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