Version April 2016
EN
17
HÜRNER HST 300 2.0 User’s Manual
H Ü R N E R S c h w e i s s t e c h n i k G m b H
Nieder-Ohmener Str. 26
35325 Mücke, Germany
9.2.2 Overvoltage
The input voltage is over 290 volts. If the error condition
persists for longer than 15 seconds, the welding process
will be aborted.
9.2.3 Resistance Error
The resistance value of the connected fitting is out of the
read tolerance.
9.2.4 Frequency Error
The frequency of the input voltage is out of tolerance
(42 Hz - 69 Hz).
9.2.5 Voltage Error
Check generator voltage and current. The output voltage
does not correspond to the value previously read; the weld-
ing unit has to be sent to the manufacturer for check-up.
9.2.6 Low Current
The message is displayed if the there is a momentary cur-
rent failure or if the current decreases by more than 15%
per second for 3 seconds.
9.2.7 Excess Current
The output current value is in excess; possible causes: short-
circuit in the heater coil or the welding cable. During the
start stage the upper abort threshold equals 1.18 times the
value at start, in any other case the upper limit depends
on the load value and is calculated as the current at start
plus 15%.
9.2.8 Emergency Off
The welding process has been interrupted by pressing the
STOP/RESET key.
9.2.9 Heater Coil Error
The dynamic current value during welding differs by more
than 15% from the required value, indicating a short-circuit
in the heater coil.
9.2.10 Power Supply Failure at Last Welding
The last welding is incomplete. The welding unit was dis-
connected from the power supply voltage while it was
in progress. To go on using the unit, this error has to be
acknowledged by pressing the STOP/RESET key (see also
Sect. 7.4).
Summary of Contents for HST 300 Junior + 2.0
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