Hydrogen Generator NM Series 2 User’s Manual
19
Options
Remote control
The hydrogen generators can be fitted with an I/O board. There are two possibilities with this
board:
1) Analog remote control with potentially free relay contacts to check the status of the
machine, and an input to start/stop the production of hydrogen.
The contacts can be configured via the Configuration Menu as normally-open or nor-
mally-closed (see the Configuration section). The maximum voltage and current rat-
ings for the relay contacts are 1A / 48V (outputs).
The input signal can be configured in 3 different modes:
a) start/stop: In this mode a pulse (positive edge) starts the generator and opens the
main valve after the internal pressure is reached. (during building up
the internal pressure, the “open” button is flashing). The next pulse will
put the generator in Standby
b) start only: In this mode the generator can be started by a pulse (positive edge)
or continuous signal. The main valve will be opened when the internal
pressure is reached. (During build-up of the internal pressure the
“open” button is flashing). The Stop action is via the key board.
c) direct control:In this mode the generator is producing hydrogen and the valve is
open as long as the input signal is high. When the signal goes low the
generator goes in Standby.
Remote connector pin configuration
Pin Description
1+2 Start 12-30 VDC (pin.1 = 0V, pin. 2 = positive)
3+4 Standby
5+6 Reaching external pressure
7+8 Refill water
09+10 Low water level
11+12 Bad water
13+14 Change water
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