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ESAB DTE 255 - Page 72

ESAB DTE 255
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-- 7 2 --
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5 Potentiometer, Hot Start time
(R3)
S For setting and optimising the starting cycle with
regard to the electrode size.
TIG welding ( 10 -- 500 ms )
MMA welding (0.1 -- 2 s)
6 Potentiometer, Arc Force
(R9)
S For setting and optimising the Arc Force function
(Anti Stick), for MMA welding only.
7 Potentiometer, Slope Up
(R6)
S For setting the slope--up time of the welding current
(0 to 10 seconds).
8 Potentiometer I1
(R1)
S For setting the non--pulsed welding current and the
current pulse when welding with pulsed current.
9 Potentiometer I2
(R2)
S For setting the background current for pulsed
welding and the lower current level when using the
shift function.
10 Potentiometer, Slope down
(R7)
S For setting the welding current slope--down (0 to 10
seconds).
11 Potentiometer, Gas Post Flow
(R8)
S For setting the gas postflow time (3 to 30 seconds).
12 Potentiometer, Frequency
(R4)
This potentiometer has double functions:
S For setting the pulse frequency between 0.3 and
300 Hz for pulsed welding with direct current.
S For setting the a.c. frequency between 30 and 300
Hz for non--pulsed welding with alternating current.
N.B. When welding with pulsed alternating current,
the a.c. frequency is automatically set to 100 Hz!
The max. pulse frequency to be set is then 100 Hz!
13 Potentiometer, Balance
(R5)
This potentiometer has double functions:
S For setting the relationship between positive and
negative half wave when welding with alternating
current to optimise the cleaning or the penetration.
(Turning right =>increased penetration.)
S For setting the time relation between the
background and the peak current when welding
with direct current.
(Turning right =>longer pulse current time.)
N.B. When welding with pulsed ac the time balance
between the pulse current and the base current will
automatically be 50/50%. The relationship between
positive and negative halfwave is adjustable as for
unpulsed ac welding.

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