Tucker GmbH,
Mail / Post:
Max-Eyth-Str.1, 35394 Gießen, Germany
Stud welding unit N800i
As of 24.08.2021
Manual part number: BE 1227
2
1.2
Unit Description
The Nelweld N800i is a mobile welding unit, which in connection with a manual
‐
loading
gun serves to weld metallic studs onto workpiece surfaces that are suited for welding.
Commercially available studs can be welded both according to the drawn
‐
arc and the
short
‐
cycle welding method with the Nelweld N800i. The variation in method must be
selected with the function code.
The Nelweld N800i works on the basis of a compact inverter power source and with
extremely short weld times supplies constant weld currents up to 800A.
In this connection, the rectified mains voltage is transformed into high
‐
frequency
voltage by means of an inverter. The inverted voltage is transmitted by a high
‐
frequency
transformer and rectified on the out
‐
put side.
As a consequence of the high control rate of the Nelweld N800i the re
‐
producibility of
the welds is increased and the quality of the welds clearly improved.
In contrast to welding units with a thyristor control of the same capacity it was possible
to considerably reduce the dimensions and the weight of the Nelweld N800i.
The weld currents and weld times required for stud welding can be set stepless on the
appropriately display function keys.
The entire weld cycle is coordinated by the control unit of the Nelweld N800i and can be
visually traced by means of the LED display elements. Fault messages are issued, and
numerically coded, on the error display.
In order to keep the temperature level of the Nelweld N800i as low as possible the
N800i has two thermostats to monitor internal temperature level. One thermostat is
used to turn on the fan automatically when the internal temperature reaches a level.
Another thermostat checks if a higher unsafe level is reached and stops the inverter and
displays an error message.
If the temperature is exceeded, the welding unit prevents welding temporarily. Thermal
overload is indicated by means of a flashing warning triangle and E011 displayed if
function key pressed.
In the Europe version the Nelweld N800i has a 4
‐
pole control cable socket to transmit
the controls signals to the configured weld gun.
The gun configuration always follows from the variation in method used. Thus, the
drawn
‐
arc method requires the connection of a gun of type NS 40
‐
B. Short
‐
cycle
welding must be performed with an NS 40 SL gun.
Summary of Contents for N800iTM
Page 18: ......
