SEQUENCER WITH
DIFFERENTIAL PRESSURE
SWITCH
Technical notice
FI 72.0567.0221E
Page 7 / 45
SLAVE BOARD :
This board is located in the slave box.
Depending on the configuration, it can be equipped with a pressure sensor for measuring the compressed air in a
tank with the possibility of a 4-20mA output for measure transfer.
It can be equipped with digital inputs and outputs to control the isolation of a tank or the isolation of a cell with
position control.
It manages the activation of a maximum of 18 SV while controlling the electrical and compressed air consumption.
A digital input (for dry contact) is provided on this board in order to make locally, on the concerned slave, a
sequential activation of its SV outputs: at each pulse, a shot is made followed by a pause time. If the input remains
closed (= 1), then the shots follow. Be carreful: these forced locally activation are made independently of the
controls and automation which are managed by the master box/cabinet.
Several slave boxes are used in an SFX+V2.
Each box is identified on the bus by a unique number.
This identifier determines the role of the box in the configuration of the filter (
→
see associated electrical diagram of
the SFX+V2). To set this number, the card has a rotary switch and microswitches in order to perform the coding:
the number is formed by the position of the rotary switch (0 à 9)
and by adding 10 if SW1 put ON
20 if SW2 put ON
40 if SW3 put ON
Note: the number can therefore
vary from 1 to 79.
Digital input: forcing activation
of SV output.
Be carreful: see above
Board
compressed
air
sensor
Slave box bus communication board
if the last box on the bus, put the central
switch to "ON"
