Bronkhorst®
Instruction Manual EL-FLOW® Select
9.17.099J
26
3.5.2.2
Power-up functions
·
In order to access these functions, press and hold the switch while powering up the instrument.
·
As long as the switch is held, the LEDs show a repeating sequence of patterns, where each pattern indicates a function.
·
All patterns in this sequence are flashing (0.2 sec on, 0.2 sec off).
·
Each pattern is shown for a number of seconds; in the table below, the column labeled
Hold time
indicates the time frame
within the sequence during which a pattern is shown.
·
To start a function, release the switch when the LEDs show the pattern of the required function.
l
(green)
l
(red)
Hold time Function
off
off
0…4 sec
No action
off
on
4…8 sec
Restore factory settings (except communication settings)
on
off
8…12 sec
·
FLOW-BUS: auto install to bus; let the instrument obtain a free node address from
the FLOW-BUS system
·
Other protocols: no action
on
on
12…16 sec Activate or deactivate configuration mode
·
The 9-pin D-sub connector is set to RS-232 communication (
) at baud rate
38400
·
In configuration mode, the green LED blinks (2 seconds on, 0.1 second off)
·
Deactivate configuration mode by selecting this function again at the next power-
up
3.5.2.3
Control mode - readout/change
Reading control mode
·
By briefly pressing the switch 2 times within 1 second in normal operation mode, the instrument shows its current
control mode with a series of consecutive LED indication patterns.
·
The number of flashes corresponds to the current value of parameter
Control Mode
(see
).
Step Pattern
Indication
1
Green
l
l
number of flashes indicates the tens of the parameter value
2
Red
l
l
number of flashes indicates the units of the parameter value
Examples:
·
for value 1 (control mode 'Analog input'), the green LED will flash 0 times and the red LED 1 time
·
for value 22 (control mode 'Valve Safe State'), the green and red LED will each flash 2 times
Changing control mode
·
By briefly pressing the switch 4 times with intervals of up to 1 second in normal operation mode, the instrument enters a
state in which the control mode can be changed.
·
This is done in 2 steps, each represented by a LED indication pattern (green or red; see table below).
·
The number of flashes corresponds to the available values of parameter
Control Mode
(see
).
·
At the start of each step, the according LEDs starts flashing fast (0.1 second on, 0.1 second off). By pressing and holding
the switch, the associated action is started and the flashing slows (0.5 seconds on, 0.5 seconds off).
Step Pattern
Maximum
flash
count
Action
1
Green
l
l
2
set tens of parameter value
2
Red
l
l
9
set units of parameter value
