Impuls Output - COMAC CAL FLOW 38Imp Batch Manual

Terminal connection of the evaluation unit:
Terminal 1 – controlling of batching valve C
Terminal 2 – controlling of batching valve E
Terminal 3, 4 – puls output OUT IMP
Terminal 5, 6 – communication RS485
Terminal 7 – START button
Terminal 8 – STOP button
Terminal 9,10 – none
Terminal 11,12 – auxiliary voltage
These terminals are in the batching device already connected to the control supply plate.
Terminal connection and jumpers is always described on the cover sheet of power supply and back cover.
The output of volumetric impulses is implemented by an NPN transistor. Limit parameters of this
optocoupler are 80V/50mA/100mW max.
The volumetric impulse output is used for remote transmission of volumetric impulses. The conversion
constant is arbitrarily variable using buttons or user software. The adjustment must be carried in such a
manner that fout<400Hz.
The impulse output may be active or passive.
In active mode, the meter takes advantage of internal galvanically isolated 16V power supply. The
voltage at the output is in the state of 16V pulse, the recommended drawn current is 2.5mA. At the
moment beyond the pulse, the output is at the state of high impedance (if the input of the device does
not contain an internal pulldown resistor, it is necessary to provide it)
Wiring connection examples – passive impulse output:
Due to CR≈100% and If = 2.5 mA it is advisable to choose the collector current up to 2.5 mA.
Technical and installation
manual FLOW 38 Batch (impulse)

Impuls output

Page 8 (total 26)
Terminals
COMAC CAL s.r.o.