Miller๏ฌ
May
1993
Form:
OM-1
098
Effective
With
Style
No.
JA-28
OWNER๎S
MANUAL
t~IILI~
''~V
~
๎~r'
~
TH-1
And
TH-2
๎
Trigger
Hold
Control
For
50
Series
Wire
Feeders
๎
Compatible
With
Other
50
Series
Add-On
Controls
Such
As
DVC,
DDSC,
CS-3A,
And
Preflow/Postflow
Timer
U
Read
and
follow
these
instructions
and
all
๎
Give
this
manual
to
the
operator.
๎
U
safety
blocks
carefully.
Have
only
trained
and
qualified
persons
install,
operate,
or
service
this
unit.
Callyourdistributorifyoudonotunderstand
the
directions.
๎
U
U
For
help,
call
your
distributor
or:
MILLER
ELECTRIC
Mfg.
1079,
Appleton,
WI
54912
Co.,
P.O.
Box
414-734-9821
cover
8/92
๎
ST-095
523-A
PRINTED
IN
USA
7SXI
1~
MILLER๎S
TRUE
BLUE~
LIMITED
WARRANTY
Effective
January
1,
1992
(Equipment
with
a
serial
number
preface
of
๎KC๎
or
newer)
This
limited
wsrrsnty
supersedes
eli
previous
MILLER
warrenties
end
is
esciusive
with
no
other
guarantees
or
warranties
expressed
or
implied.
LIMITED
WARRANTY
๎
Subject
to
the
terms
end
conditions
below,
MILLER
Electric
Mtg.
Co..
Appleton.
Wisconsin,
warrenta
to
its
originei
retail
purcheser
thet
new
MILLER
equipment
sold
after
the
effective
dete
of
this
limited
werrenty
is
free
of
de
fects
in
materiel
and
workmanship
at
the
time
it
is
shipped
by
MILLER.
THIS
WAR
RANTY
IS
EXPRESSLY
IN
LIEU
OF
ALL
OTHER
WARRANTfES,
EXPRESS
OR
IMPLIED.
INCLUDING
THE
WARRANTIES
OF
MERCHANTABILITY
AND
FIT
NESS.
Within
the
warranty
periods
listed
below.
MILLER
will
repair
or
replace
any
war
ranted
pans
or
components
that
fail
due
to
such
defects
in
material
or
workmanship.
MILLER
must
be
notified
in
writing
within
thirty
(30)
days
of
such
defect
or
failure,
at
which
time
MILLER
will
provide
instructions
on
the
warranty
claim
procedures
to
be
followed.
MILLER
shall
honor
warranty
claims
on
warranted
equipment
listed
below
in
the
avant
of
such
a
failure
within
the
warranty
time
periods.
All
warranty
time
periods
start
on
the
data
that
the
equipment
was
delivered
to
the
original
retail
purchaser,
or
one
year
after
the
equipment
in
sent
to
the
distributor.
f.
5
Years
Parts
๎
3
Years Labor
Original
main
power
rectifiers
2.
3
Years
๎
Parts
and
Labor
๎
Transformer/Rectifier
Power
Sources
๎
Plasma
Arc
Cutting
Power
Sources
๎
Semi-Automatic
and
Automatic
Wire
Feeders
๎
Robots
3.
2 Years
๎
Parts
end
Labor
*
Engine
Driven
Welding
Generators
(NOTE:
Engines
are
warranted
separately
by
the
angina
manufacturer.)
๎
Air
Compressors
๎
Remote
Controls
*
Accessory
kite
*
Replacement
Penn
MILLER๎S
True
Blue
rr.
Limited
Warranty
skull
not
apply
to:
1.
Items
furnished
by
MILLER,
but
manufacturad
by
others,
ouch
as
anginao
or
trade
eccassorias.
These
items
era
covered
by
tha
manufacturer๎s
warranty,
if
any.
2.
Consumable
components;
ouch
as
contact
tips,
cutting
nozzles,
contectors
end
relays
or
parts
that
fail
dua
to
normsi
waar
3.
Equipment
that
has
bean
modified
by
any
party
other
then
MILLER,
or
aquip
mant
that
has
bean
improperly
insteliad.
improperly
oparstad
or
misused
based
upon
industry
standards,
or
aquipment
which
has
not
had
reasonable
and
nacassery
maintanenca,
or
equipment
which
has
bean
used
for
oparetion
outsida
of
the
specifications
for
the
equipment.
MILLER
PRODUCTS
ARE
INTENDED
FOR
PURCHASE
AND
USE
BY
COMMER
CIAL/INDUSTRIAL
USERS
AND
PERSONS
TRAINED
AND
EXPERIENCED
IN
THE USE
AND
MAINTENANCE
OF
WELDING
EOUIPMENT.
In
tha
avant
of
a
warranty
claim
covered
by
this
warranty,
the
exclusive
remedies
shall
be.
at
MILLER๎S
option:
)1)
repair:
or
)2)
raplacement:
or,
whera
authorized
in
writing
by
MILLER
in
appropriate
cases.
)3)
the
reasonable
cost
of
repair
or
rapleca
mant
at
en
authorized
MILLER
sarvica
station:
or
)4)
payment
of
or
credit
for
the
pur
chase
price
(lass
reasonable
dapreciation
based
upon
actual
usa)
upon
return
ot
the
goods
at
customer๎s
risk
end
expanse.
MILLER๎S
option
of
repair
or
replacement
will
be
F.O
B.,
Factory
stAppleton.
Wisconsin,
or
FOB.
eta
MILLER
authorized
ser
vice
facility
as
daterminad
by
MILLER.
Therefore
no
compensation
or
reimburse
ment
for
transportation
costs
of
any
kind
will
be
allowed.
TO
THE
EXTENT
PERMITTED
BY
LAW,
THE
REMEDIES PROVIDED
HEREIN
ARE
THE
SOLE
AND
EXCLUSIVE
REMEDIES.
IN
NO
EVENT
SHALL
MILLER
BE
LIABLE
FOR
DIRECT,
INDIRECt
SPECIAL,
INCIDENTAL
OR
CONSEOUENTIAL
DAMAGES
)INCLUDING
LOSS
OF
PROFIT).
WHETHER
BASED
ON
CON
TRACt
TORT
OR
ANY
OTHER
LEGAL
THEORY.
ANY
EXPRESS
WARRANTY
NOT
PROVIDED
HEREIN
AND
ANY
IMPLIED
WAR
RANTY,
GUARANTY
OR
REPRESENTATION
AS
TO
PERFORMANCE,
AND
ANY
REMEDY
FOR
BREACH
OF
CONTRACT
TORT
OR
ANY
OTHER
LEGAL
THEORY
WHICH.
BUT
FOR
THIS
PROVISION.
MIGHT
ARISE
BY
IMPLICATION,
OPERATION
OF
LAW,
CUSTOM
OF
TRADE
OR
COURSE
OF
DEALING,
IN
CLUDING
ANY
IMPLIED
WARRANTY
OF
MERCHANTABILITY
OR
FITNESS
FOR
PARTICULAR
PURPOSE,
WITH
RESPECT
TO
ANY
AND
ALL
EGUIPMENT
FURNISHED
BY
MILLER
IS
EXCLUDED
AND
DISCLAIMED
BY
MILLER.
Some
states
iv
the
U.S.A
do
not
allow
limitations
of
how
long
en
implied
warranty
lasts,
or
the
exclusion
st
incidental,
indirect,
special
or
connaquantiel
damages.
so
the
above
limitation
or
eeclunion
may
not
apply
to
you.
Thin
warranty
provides
spe
cific
legal
rights.
end
other
rights
may
be
eveilable,
but
may
vary
from
slate
to
utata.
In
Cenede,
legislation
in
some
provinces
provides
for
certain
additional
warranties
or
remedies
other
then
as
stated
herein,
end
to
the
eatent
that
they
may
not
be
waived.
the
limitations
and
exclusions
set
out
ebove
may
not
epply
This
Limited
Warranty
provides
specific
legal
rights,
end
other
rights
may
be
available,
but
may
very
from
province
to
province.
ii
4.
1
Year
๎
Parts
and
Labor
Motor
Driven
Guns
Process
Controllers
Water
Coolant
Systems
HF
Units
Grids
Spot
Welders
Load
Banks
SDX
Transformers
Running
Gear/Trailers
Field
Options
(NOTE:
Field
options
are
covered
under
True
Blue
TM
for
the
remaining
warranty
period
of
the
product
they
are
installed
in,
or
fore
minimum
of
one
year
๎
whichever
is
greater.)
5.
6
Months
๎
Batteries
6.
90
Days
๎
Parts
end
Labor
*
MIG
Guns/TIG
Torches
๎
Plasma
Cutting
Torches
RECEIVING-HANDLING
Before
unpacking
equ)pment,
check
carton
for
any
damage
that
may
have
occurred
dUr)ng
shipment.
File
any
Claims
for
loss
or
damage
with
the
delivering
carrier.
Assistance
for
filing
or
Sett)irtg
claims
may
be
obtained
from
distr)butor
and/or
equipment
manufacturer๎s
Transportation
Department.
When
requesting
information
about
this
equipment,
always
provide
Model
Designation
and
Seria)
or
Style
Number.
Use
the
fo))owing
spaces
to
record
Mode)
Designation
and
Serial
or
Style
Number
of
your
unit.
The
information
is
)ocated
on
the
rating
labe)
or
namep)ate.
Model
__________
Serial
or
Style
No.
Date
of
Purchase
miller
5/93e
SECTION
1
๎
SAFETY
PRECAUTIONS
AND
SIGNAL
WORDS
1-1.
GENERAL
INFORMATION
AND
SAFETY
A.
General
Information
presented
in
this
manual
and
on
various
la
bels,
tags,
and
plates
on
the
unit
pertains
to
equipment
design,
installation,
operation,
maintenance,
and
trou
bleshooting
which
should
be
read,
understood,
and
fol
lowed
for
the
safe
and
effective
use
of
this
equipment.
B.
Safety
The
installation,
operation,
maintenance,
and
trouble
shooting
of
arc
welding
equipment
requires
practices
and
procedures
which
ensure
personal
safety
and
the
safety
of
others.
Therefore,
this
equipment
is
to
be
in
stalled,
operated,
and
maintained
only
by
qualified
per
sons
in
accordance
with
this
manual
and
all
applicable
codes
such
as,
but
not
limited
to,
those
listed
in
the
Arc
Welding
Safety
Precautions
section
of
the
welding
pow
er
source
Owner๎s
Manual.
1-2.
SAFETY
ALERT
SYMBOL
AND
SIGNAL
WORDS
4~
This
safety
alert
symbol
is
used
with
the
signal
words
WARNING
and
CAUTION
to
call
atten
tion
to
the
safety
statements.
a
WARNiNG
statements
identify
procedures
or
practices
which
must
be
followed
to
avoid
seri
ous
personal
injury
or
loss
of
life.
a
CAUTION
statements
identify
procedures
or
practices
which
must
be
followed
to
avoid
minor
personal
injury
or
damage
to
equipment.
IMPORTANT
statements
identify
special
instructions
necessary
for
the
most
efficient
operation
of
this
equip
ment.
Wire
Drive
Motor
And
Drive
Assemb~1
SECTION
2๎
INSTALLATION
&
OPERATION
Output
Control
I
115
Volts/Contactor
Control
Cord
Trigger
Hold
Control
Preflow,
Postflow
Timer
DVC
Control
DOSC
Control
Welding
Power
Source
Gun
Trigger
Cord
IMPORTANT:
See
the
OVC
and
DDSC
Owners
Manuals
for
additional
connection
information.
Remote
Voltage
Control
Cord
Gas
Valve
Gun
Trigger
Control
Interconnecting
Cords
*Current
Relay
Connections
๎
DVC
MP
Models
Only
Figure
2-1.
Connection
Diagram
Gas
Valve
Interconnecting
Cord
Gas
Control
Cord
S-0493-A
OM-1
098
Page
1
2-1.
INSTALLATION
(Figure
2-1)
a
WARNING:
ELECTRIC
SHOCK
can
kill.
.
Do
not
touch
live
electrical
parts.
Shut
down
wire
feeder
and
welding
power
source
before
beginning
trigger
hold
control
in
stallation.
The
control
mounts
on
top
of
the wire
feeder
control
box
or
other
optional
remote
control.
The
control
connects
to
the
wire
feeder
control
and
welding
gun.
IMPORTANT:
When
using
a
DDSC,
plug
gun
into
DDSC
first,
then
plug
DDSC
into
trigger
hold
control,
and
trigger
hold
control
into
the
wire
feeder
(see
Figure
2-1).
1.
Loosen
screws
on
front
sides
of
the
wire
feeder
control
box.
2.
Mount
the
trigger
hold
control
on
top
of
the
wire
feeder
control
box
and
secure
by
tightening
screws.
3.
Connect
plug
from
gun
to
matching
free-hanging
receptacle
at
rear
of
trigger
hold
control.
Align
keyways,
insert
plug,
and
rotate
threaded
collar
fully
clockwise.
4.
Connect
plug
from
trigger
hold
control
to
TRIG
GER
receptacle
on
wire
feeder
control
box.
Align
keyways,
insert
plug,
and
rotate
threaded
collar
fully
clockwise.
2-2.
OPERATION
To
use
trigger
hold,
place
switch
in
TRIGGER
HOLD
po
sition.
The
gun
trigger
must
be
held
closed
momentarily
to
engage
the
trigger
hold
function.
Release
trigger
while
welding
and
hold
closed
briefly
at
the
end
of
the
weld.
Place
switch
in
NORMAL
position
when
trigger
hold
fea
ture
is
not
desired.
IMPORTANT:
Every
six
months
inspect
the
labels
on
the
unit
for
legibility.
All
precautionary
labels
must
be
maintained
in
a
clearly
readable
state
and
replaced
when
necessary.
See
Parts
List
for
part
number
of
pre
cautionary
labels.
SECTION
3
๎
ELECTRICAL
DIAGRAMS
CR/V
>
4
SA-044
PLG5
I
RLC-50
BLK
TO
GUN
2
3
TO
FEEDER
2
3
4>
CR/V
Figure
3-1.
Circuit
Diagram
For
TH-1
Control
OM-1098
Page
2
ERRATA
SHEET
Diagram
3-1.
Circuit
Diagram
For
Single
TH
Control
Amend
Diagram
3-2.
Circuit
Diagram
For
Dual
TH
Control
TO
GUN
RIGHT
SIDE
3
TO
GUN
LEFT SIDE
FILE
COPY
RETURN
TO
FOLDER
Circuit
Diagram
No.
SA-044
802-A
After
this
manual
was
printed,
refinements
in
equipment
design
occurred.
This
sheet
lists
exceptions
to
data
appearing
later
in
this
manual.
AMENDMENT
TO
SECTION
3-
ELECTRICAL
DIAGRAMS
Amend
Diagram
3-1.
Circuit
Diagram
For
Single
TH
Control
PLG5O
8L
K
PLG5
I
2
3
4>
6PN
TO
GUN
2
TO
FEEDER
3
6IQN
~
Circuit
Diagram
No.
SA-044
790-A
PLG52
2
8LK
PLG53
2
PLG54
3
6~N
>~
BLK
PLG55
2
3
4>GPN
GRN>
Diagram
3-2.
Circuit
Diagram
For
Dual
TH
Control
๎A
H.
5L/(
PLGS3
TO
LEFT
6RN>4
Figure
3-2.
Circuit
Diagram
For
TH-2
Control
SA-044
802-A
PLG52
505
3
SLK
PLO55
>1
2
3
OM-1098
Page
3
SECTION
4๎
PARTS
LIST
Figure
4-1.
Complete
Assembly
(TH-2
Illustrated)
ST-095
520.A
Item
Dia.
No.
Mkgs.
PLG51
PLG52,54
PLG5O
PLG53,55
10
11...
CR50...
11
..
CR51,52
12
..13....S50...
13...
S51,52
14
15
15
044
726
604
571
079
531
080
328
080 328
079
534
044
727
044
727
079
878
079
878
079
535
079
531
604
571
044
729
044
729
010476
011 611
011
611
044
771
4.4
2
4....4
1....1
3ft..
3ft
1
2
2....4
1
2
3
11
12
15
14
3
Part
No.
Description
1
134327
2
+044770
Figure
4-1.
Complete
Assembly
044042 044040
Quantity
Model
TH-1
TH-2
.3
..6
..6
.7
..8
1.
3ft
1.
...2
3ft
LABEL,
warning
general
precautionary
WRAPPER
CABLE,
trigger
hold
(consisting
of)
CABLE,
port
No.
18
4/c
(order
by
ft)
CONNECTOR,
circ
clamp
str
rlf
sz
11
Amp
206358-2
CONNECTOR
w/SOCKETS,
free
hanging
(consisting
of)
CONNECTOR
w/SOCKETS,
free
hanging
(consisting
of)
CONNECTOR,
circ
skt
push-in
14-l8ga
Amp
66358-6
CABLE,
trigger
hold
(consisting
of)
CABLE,
trigger
hold
(consisting
of)
CONNECTOR
&
PINS,
(consisting
of)
CONNECTOR
&
PINS,
(consisting
of)
CONNECTOR,
circ
pin
push-in
14-l8ga
Amp
66359-6
CONNECTOR,
circ
clamp
str
rlf
sz
11
Amp
206358-2
CABLE,
port
No.
18
4/c
(order
by
ft)
RELAY,
latching
24VAC
SPDT
15A
RELAY,
latching
24VAC
SPDT
15A
BUSHING,
sti๎ain
relief
.625
ID
x
.57Omtg
hole
SWITCH,
tgl
DPDT
15A
125V
SWITCH,
tgl
DPDT
iSA
125V
CASE
SECTION,
front/bottom/rear
NAMEPLATE,
(order
by
model
and
style
number)
NAMEPLATE,
(order
by
model
and
style
number)
BLANK,
snap-in
metal
.625mtg
hole
010217
2
+When
ordering
a
component
originally
displaying
a
precautionary
label,
the
label
should
also
be
ordered.
BE
SURE
TO
PROVIDE
MODEL
AND
STYLE
NUMBER
WHEN
ORDERING
REPLACEMENT
PARTS.
1
OM-1098
Page
4
-
1
-
2
-
3
-
4
-
5
-
6
-
7
-
8
-
9
-
10
Miller TH-2 Owner's manual
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