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W
el
d
ing
m
ode
P
re
-f
lo
w
t
im
e
(s)
Ini
ti
a
l
curr
ent
(
A
)
Up
-s
lop
e
ti
m
e
(s)
P
ea
k
curr
ent
(
A
)
B
as
e
curr
ent
(
A
)
D
o
w
n
-s
lo
pe
ti
m
e
(s)
Fi
n
is
h
curr
e
nt
(
A
)
P
ost
-f
lo
w
t
im
e
(s)
M
ixe
d
fr
eque
n
cy
(H
z)
M
ixe
d
dut
y
cyc
le
(%)
A
C
f
req
uen
cy
(H
z)
A
C
b
al
anc
e
(%)
——
——
Mixed
TIG
0.5
20
0.5
100
——
0.5
20
2
2
20
20
20
—— ——
6.4.4 Barcode display
View barcode
Press and hold the Current Setting Encoder and Welding Mode keys
simultaneously for
3s to view the machine barcode. Press any key or rotate the encoder to immediately exit the
barcode display. If you do not perform any operation on the panel, the barcode automatically
exits after 20s.
6.4.5 VRD function
Warning!
The electrical connection of the machine must be completed by
electricians with qualification certificates.
Warning!
Electric shock may cause death; after power failure, the machine
will still have high voltage, so do not touch the live parts.
The MMA VRD mode is enabled by default in factory settings, and the user can disable it as
required.
1) Open the right cover of the machine with the machine powered off;
2) Turn the DIP switch SW1 to "12" on the control panel PK-442 to disable VRD;
3) Put the cover back and turn on the power; switch to MMA mode and the VRD indicator
will be on. At this time, the no-load voltage of the welder is 11.5V.
