Tecfluid FLOMID-MX Bedienungsanleitung PDF herunterladen (Seite 5)

2.4 Remote partial reset connection

Terminal

Anode.

Cathode.

This input is for connecting a remote push button to reset the partial volume counter, which is

used principally for starting batching processes. These terminals are configured to be activated by a

potential free normally open push button.

The reset input can be connected to the input of an opto-isolator as shown below. The

minimum current required to activate this input is about 2 mA, which can be obtained by applying a

minimum voltage of 5 Vdc to the input. (+ to terminal 11 and – to terminal 12). To do this the instrument

must be opened at the front, the printed circuits must be withdrawn and the JP1 and JP2 jumpers

must be changed to position 1-2.

The push button contact must be a good quality snap action switch to guarantee correct working at low

voltages and reduce contact bounce to a minimum.

2.5 Connection of digital outputs

The digital outputs are NPN opto-isolated bipolar transistors with the same characteristics as the

pulse output (see part 2.3).

Terminal

Collector output 1.

Emitter output 1.

Collector output 2.

Emitter output 2.

In the event of employing inductive loads, such as relays, the use of a free wheeling diode is

necessary and should be connected (see part 2.3).

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Tecfluid FLOMID-MX Bedienungsanleitung Seite 5