Miller Electric S-21E Welder User Manual


 
I,
O
volts
dc
during spot
Not used
time,
0.7
volts
dc
a~er
spot time
with
S51
in
Spot position,
0
volts
do
with
S51 in
contInuous
position
‘4
+24
volts
dc
output
for
motor
stop/stan
circuitry with
gun
trigger
pressed,
0
volts
dc
after spot
time
IMPORTANT:
For
DC,
the
values
are
based
on a
good
quality
digital
volt-ohmmeter
(DVM) or equivalent
reading
average
(not
RM5)
values.
For
AC,
the
values
are
RMS
readings.
The
DC
voltages
shown are
with
respect
to
DC
circuit
common lead
71
(pin
B
of
plug
PLG5
I)
unless
otherwise
indicated. The
tolerances
are
±
10%
unless
otherwise specified.
Burnback
potentiometer
R26
+24
volts
dc
output
for
contactor
output
with
gun
trigger
pressed,
0
volts
do
after
burnback
time
80-125
971
common
Not
used
S-21E
TM-1571
Page
23