Index revision : C 11 6209
4. Operating principle of the GNM 100
4.1. Supply voltage and connections
The voltage of the GNM 100 is preset at 220 V. Make sure that the earth terminal of the module (located
at the back) is property connected to the earth with cable with a gauge between 6 and 10 mm2. Connect
the mains cord. Connect the gun plug to the GNM 100 (marked A on the back of the box).
WARNING : The messages indicated are given as guidelines and vary according to the type of
gun used.
4.2. Automatic selection of the high voltage unit
WARNING : Each time a new type of high voltage unit is validated, all the parameters take the
works preset value and the old parameters are replaced by the new ones.
When connected to a different type of high voltage unit, the GNM message will request validation of this
new high voltage unit which is done by pressing key 4 .
When connected to a high voltage unit, the GNM 100 automatically recognises it and displays its name
on the screen. If it is the same as the one used the last time, the following screen will not appear.
If the display indicates a type of gun other than the one connected, do not validate. Switch off the GNM
100 and disconnect the gun. Connect the gun again and try to power the GNM 100 again.
If the gun is still not recognised by the GNM 100, contact a SAMES distributor.
After validation, the display indicates:
•U = 0 (high voltage set point)
•I = 80 (current limitation set point).
Press key 4 (see § 2.1 page 4).
4.3. Modifying a set point
To change the high voltage set point, press key 2 or 3 . The display will, for example, indicate:
Press V to scroll the menu.
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