EWM inverter STICK 250 H-2, Руководство по эксплуатации

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3 Function specification
3/1
3.1 Logic control
D1
E1
A1
B1
C1
Fig. 1: Logic control
Item Symbol Description
A1 Hotstart current
Hotstart current IHot infinitely adjustable from the minimum to the maximum
welding current.
The hotstart device makes it possible to ignite and re-ignite critical stick
electrodes easily.
Adjustable arcforcing
Shortly before the electrode threatens to stick, the arcforcing device sets an
increased current designed to prevent the electrode from sticking. The value of
the increase in current depends on the welding voltage and the setting on the
arcforcing potentiometer.
Excellent welding properties are achieved with all difficult electrodes thanks to
the adjustable arcforcing.
"Far left" position:
Minimal arcforcing
Þ
gentle arc,
slight increase in current before short-circuit.
Used with rutile, coated stick electrodes.
"Centre" position:
Moderate arcforcing
Þ
normal arc,
moderate increase in current before short-
circuit.
Used with basic, coated stick electrodes.
( U/V )
( I/A)
5A
Antistick
RUTIL BASISCH CELL
B1
"Far right" position:
Strong arcforcing
Þ
hard arc, great increase in current before short-circuit.
Used with cellulose stick electrodes.
C1 Hotstart time
Hotstart time t
Hot
infinitely adjustable from 0 sec. - 2 sec.
The hotstart device ensures that critical stick electrodes can be ignited and re-
ignited easily. The hotstart current and time can also be adjusted externally
using the FR 35 remote control.
D1 Yellow LED ( excess temperature )
Thermal monitors in the power unit shut down at excess temperature and the
excess temperature indicator lamp comes on. After cooling, welding can
proceed without any further measures.
E1 Main current I
1
(welding current)The welding current I
1
can be infinitely
adjusted from the minimum to the maximum welding current.