Bronkhorst®
Instruction Manual EL-FLOW® Prestige
9.17.084N
50
Code
Description
C0I
Digital output, high/low switch via remote parameter (e.g. for shut-off valve control)
Pin 5 is pulled down to 0 Vdc when writing value 1 to parameter
IO switch status
, this is undone by writing
value 0.
A device connected to pin 5 (e.g. a shut-off valve) can be activated/deactivated by writing parameter
IO
switch status
.
Note: If the instrument is forced into Valve Safe State, the digital output is also affected, so a (n/c) shut-off
valve connected to pin 5 will be closed when the (n/c) controller is in ‘Valve Safe State’.
Make sure to use 24 Vdc power supply corresponding to the shut-off valve specifications. Cable 7.03.572 (T-
part 9-pin D-sub/loose end) or 7.03.603 (T-part 9-pin D-sub/DIN43650C) can be used for this operating
option.
D9E
Digital frequency output, measure
Measurement value is translated to a frequency within given frequency range.
The default frequency range to represent 0…100% flow is 0…10000 Hz. Any other frequency range must be
specified on order.
F9B
Example for F9B hook-up
Digital pulse output, batch counter
Pin 5 is pulled down to 0 Vdc when a given batch size is
reached (during a given pulse length).
By default, a pulse is given at each 1x the
Counter unit
batch
value, with a pulse length of 1 second. For instance, when
Counter unit
is set to 'ln', a pulse is given each time 1 ln has
passed through the instrument. An alternative pulse length
must be specified on order.
Provide a pull-up resistor of 5…10 kOhm to create 15…24 Vdc at pin 5 (according to the applicable hook-up
diagram).
H1P*
4…20 mA input, external pressure sensor for active pressure correction. Signal is translated to parameter
Pressure
.
I3C
Digital input, controller mode valve close
Valve closes when pin 5 is connected to 0 Vdc.
This option switches between the default
Control mode
and mode ‘Valve Close’ (value 3). When the default
Control mode
is digital, the default value is 0 (bus/RS232), when the default
Control mode
is analog, the
default value is 1 (Analog input).
I8C
Digital input, controller mode valve purge
Valve is fully opened when pin 5 is connected to 0 Vdc.
This option switches between the default
Control mode
and mode ‘Valve Fully Open’ (value 8). When the
default
Control mode
is digital, the default value is 0 (bus/RS232), when the default
Control mode
is analog,
the default value is 1 (Analog input).
I1R
Example for I1R or I2R hook-up
Digital input, reset counter
The counter resets when pin 5 is connected to 0 Vdc.
I2R
Digital input, reset alarm
The alarm resets when pin 5 is connected to 0 Vdc.
*) Note regarding active pressure correction:
This option overrides the built-in active pressure correction of the EL-FLOW® Prestige PI.