Amada WELTOUCH CT-110D User manual

AA04OM1188289-04
OPERATION MANUAL
WELTOUCH
®
CT-110D

CT-110D
Preface
Thank you for purchasing our WELTOUCH CT-110D.
This operation manual describes the proper method of operation for the CT-110D, as well as precautions for
its use. If you have any questions concerning operation of the controller, read this operation manual.
Read this operation manual carefully to ensure the proper use of all functions of the CT-110D. Keep this
operation manual in a safe place for future reference.
After unpacking the weld control, first confirm that it is not broken and that all accessories are included. If any
portion is broken or an accessory is missing, immediately notify your dealer or our sales representative.
Notice
(1) This manual may not be copied, in whole or in part, without our permission.
(2) The contents of this manual are subject to change without notice.
(3) If you have any questions concerning the contents of this manual or find any errors or
omissions in it, please notify us.
(4) We will not be liable for problems caused by improper use of this product.

CT-110D
Contents
1. Special Notes .......................................................................................................................... 1-1
(1) Safety Precautions................................................................................................................................................. 1-1
(2) Precautions for Handling....................................................................................................................................... 1-4
(3) On Disposal ............................................................................................................................................................ 1-4
2. Features................................................................................................................................... 2-1
3. Name and Function of Each Section..................................................................................... 3-1
(1) Front Panel ............................................................................................................................................................. 3-1
(2) Rear Panel.............................................................................................................................................................. 3-2
(3) Internal Block Diagram.......................................................................................................................................... 3-3
4. Connection.............................................................................................................................. 4-1
(1) Basic Configuration................................................................................................................................................ 4-1
(2) Connection of Power Source ............................................................................................................................... 4-2
(3) Installation Method for the Current-Detecting Coil ............................................................................................. 4-3
(4) Selecting of Functions ........................................................................................................................................... 4-6
(5) Input Method for Start Signals ............................................................................................................................4-10
5. Interface................................................................................................................................... 5-1
(1) External Input and Output Signals ....................................................................................................................... 5-1
(2) Timing Chart ........................................................................................................................................................... 5-4
6. Operation Method ................................................................................................................... 6-1
(1) Basic Operation...................................................................................................................................................... 6-1
(2) Setting of Schedule Data ...................................................................................................................................... 6-4
(3) Setting of the Monitor............................................................................................................................................. 6-6
(4) Setting by Mode No............................................................................................................................................... 6-9
(5) Setting of the Maximum Current ........................................................................................................................6-15
(6) Current Calibration Method.................................................................................................................................6-16
7. Maintenance............................................................................................................................ 7-1
(1) Replacement of Battery......................................................................................................................................... 7-1
(2) Replacement of Fuses.......................................................................................................................................... 7-2
8. Specifications ......................................................................................................................... 8-1
(1) Standard Specifications......................................................................................................................................... 8-1
(2) Specification Chart................................................................................................................................................. 8-6
(3) Data Out Function (Option)................................................................................................................................... 8-7
(4) Outline Drawing...................................................................................................................................................... 8-9
9. Schedule Data Table............................................................................................................... 9-1
10. Error Indication and Countermeasures.......................................................................................10-1

CT-110D
1.Special Notes
1-1
1. Special Notes
(1) Safety Precautions
Prior to use, read these “Safety
Precautions” carefully to gain a full
understanding of the proper method of
use.
The precautions listed here are designed
to ensure safe use and proactively
prevent risks and damage to the user and
other people.
All precautions are critical for safety.
Please read them all.
The hazard signs have the following
meanings:
DANGER
Indicates a high risk of death or serious
injury if precautions are not correctly
observed.
WARNING
Indicates a risk of death or serious injury if
precautions are not correctly observed.
CAUTION
Indicates a risk of physical injury or damage to
product if precautions are not correctly
observed.
These symbols indicate
"prohibition." They are
warnings concerning
actions out of the
scope of the warranty
of the product.
These symbols indicate
actions that operators
must take.
Each symbol with a
triangle indicates a
DANGER, WARNING,
or CAUTION to the
operator.
DANGER
Do not touch the inside of the Controller unnecessarily.
Burns or electric shock may result. Do not touch the inside of the Controller
other than for maintenance as described in the operation manual.
In the event of a problem, contact our serviceperson for internal inspection
and repair.
Never disassemble, repair or modify the Controller.
These actions can cause electric shock and fire. Do not do anything other
than the maintenance described in the operation manual.
Never burn, destroy, cut, crush or chemically decompose the Controller.
This product incorporates parts containing gallium arsenide (GaAs).

CT-110D
1.Special Notes
1-2
WARNING
Do not insert your fingers or hands between the electrodes.
When welding, keep your fingers and hands away from the electrodes.
Do not touch any welded part or electrode during welding or just after
completion of welding.
The welded parts of a workpiece, electrodes, and the arm are very hot.
Do not touch them; burns may result.
Ground the Controller.
If the Controller is not grounded, electric shock may result.
Do not expose to water or other liquid.
Exposing electrical components to water or other liquid may result in electric
shock or short-circuiting.
Apply the specified supply voltage.
Application of a voltage outside the specified range may result in fire or
electric shock.
Use only the specified cables.
Use of a cable of insufficient capacity may result in fire.
Do not damage the power cable or connecting cables.
Do not walk on, twist, or pull on any cable.
The power cable and connecting cables may be broken, and that can cause
electric shock, short circuits and fire.
If any part needs to be repaired or replaced, consult us or your distributor.
Stop the operation if any trouble occurs.
Continuous operation after occurrence of a trouble such as burning smell,
abnormal sound, abnormal heat, smoke, etc. can cause electric shock and
fire. If such a trouble occurs, immediately consult us or your distributor.
Persons with pacemakers must stay clear of the welding machine.
A person who uses a pacemaker must not approach the welding machine or
walk around the welding shop while the welding machine is in operation,
without being permitted by his/her doctor. The welding machine generates a
magnetic field and has effects on the operation of the pacemaker while it is
turned on.
Protective gear must be worn.
Put on protective gear such as protective gloves, long-sleeve jacket, leather
apron, etc. Spatter can burn the skin if they touch the skin.
Wear protective glasses.
If you look at the flash directly during welding, your eyes may be damaged.
If any spatter gets in your eye, you may lose your eyesight.

CT-110D
1.Special Notes
1-3
CAUTION
Always use a terminal cover.
Touching the terminal block directly may result in electric shock. Be sure to
fit the block with a cover.
Use proper tools (wire strippers, pressure wire connectors, etc.) for
terminal treatment of the connecting cables.
Do not cut the wire conductor; fire or electric shock may result.
Install the Controller on a firm and level surface.
If the Controller falls or drops, injury may result.
Do not place any container of water or other liquid on the Controller.
If water or other liquid spills, insulation will deteriorate, which may result in
electrical leakage and/or fire.
Keep combustible matter away from the Controller.
Spatter may ignite combustible matter. If it is impossible to remove all
combustible matter, cover it with non-combustible material.
Do not cover the Controller with a blanket, cloth, etc.
Do not cover the Controller with a blanket, cloth, etc. while it is in use.
The cover may be overheated and burned.
Do not use this Controller for any purpose other than welding.
Use of this Controller in a manner other than specified can cause electric
shock and fire.
Use ear protectors.
Loud noises can damage hearing.
Keep a fire extinguisher nearby.
Keep a fire extinguisher in the welding shop in case of fire.
Maintain and inspect the Controller periodically.
Maintain and inspect the Controller periodically, and repair any damage
nearby before starting operation.

CT-110D
1.Special Notes
1-4
(2) Precautions for Handling
Install the Controller securely on a firm and level surface, to ensure that it will not fall.
Do not install the Controller in the following locations:
Damp areas (where the humidity is above 90%), areas where chemicals are handled, dusty areas,
areas near a high noise source, areas where water may condense, areas exposed to large amounts
of vibration or shock, and areas where temperatures are above 45C or below 0C
Clean the exterior of the Controller using a soft, dry cloth or one slightly dampened with water. If the
Controller is very dirty, use diluted neutral detergent or alcohol. Do not use paint thinner, benzine, etc., as
they may discolor or deform the Controller.
Do not insert a screw, coin, etc. into the Controller, as they may cause a malfunction.
Operate the Controller in accordance with the method described in this operation manual.
Press switches/buttons carefully by hand. Handling them roughly (using a screwdriver or the tip of pen)
may result in a malfunction or failure.
Press switches/buttons one at a time. Pressing more than one switch/button at a time may result in a
malfunction or failure.
(3) On Disposal
This product incorporates parts containing gallium arsenide (GaAs). At the time of disposal,
separate it from general industrial waste or domestic waste and carry out the disposal in
accordance with applicable laws and regulations.

CT-110D
2.Features
2-1
2. Features
The WELTOUCH CT-110D is a constant/alternating-current resistance weld control with a
15-schedule setting function. It is controlled by a microcomputer, allowing it to be applied to all
types of welding. Due to the plating-layer treatment by the pre-stage current, heat treatment by
the post-stage current, etc., splashing is prevented, the welding tip is protected from
overheating, and an ideal welding current can be set. In addition, the CT-110D can be
applied to all types of spot-welding machines by selecting the secondary-or primary-current
feedback constant-current control and source-voltage fluctuation compensation method. The
required items can be set very simply and easily. The CT-110D has a wide range of features,
as explained below.
1) Indicates the welding current, schedule set No., set time, etc. with an LED.
2) Stores up to 15 schedules according to the materials and thicknesses of the
workpieces to be welded.
3) Equipped with the 3-stage power-on system, and upslope and downslope
functions.
4) Supplies a stable welding current by the primary and secondary constant-current
control method and source-voltage fluctuation compensation method.
5) Has the welding mode applied to the high-tensile steel plate with a high initial
resistance
6) Includes functions for monitoring the current and conduction angle.
7) Comes with a cover to protect the touch panel from oil mist.
8) Has three counters to indicate the quantity of products, and other information.

CT-110D
3.Name and Function of Each Section
3-1
3. Name and Function of Each Section
(1) Front Panel
⑧Weld ON/OFF key [WELD]
Turns welding on and off. Each time this key is pressed, welding is turned on and
off alternately.
If this key is turned on, the LED at the upper left comes on; if this key is turned off,
the LED goes off.
Press and hold this key for at least 0.5 seconds to turn off welding.
Even if this key is turned on, welding does not start if the external weld ON/OFF
input is turned off.
WELD
SQUEEZE
COUNT
RESET
MODE
No.
W1SQ C1 W2 Ｃ2 W3 HO OF
S1 S2
％
NUMBERSCHEDULE
STARTERROR
READY CAUTION STEP END
CYCLES／CURRENT
OF=00:SINGLE WELD
CYCLE
CURRENT
MONITOR
DEG.
LOW HIGH
DATAMODE
STEP
SELECT
POWER
No.
MAX CURR.
COUNT
RESET
DISPLAY
MONITOR
COND.
ANGLE
%
kA
W.POWER
5:TURN RATIO
4:WORK COUNT
3:WELD COUNT
2:TOTAL COUNT
7:MODE SWITCH
STEPPER COUNT0:
STEPPER UP RATE 1:
±％ ＷＩＮＤＯＷ ＯＮ／ＯＦＦ
6:
①Schedule No. setter/indicator
[SCHEDULE]
Calls a No. to input a schedule
and indicates the schedule No.
②State indicator
Indicates the current state of the
CT-110D for confirmation.
③Cycle setter/indicator
[CYCLES]
Sets and indicates the cycles of
the weld sequence (Squeeze,
Weld I, Cool I ---). Lights up the
currently executed item to
indicate the state during
operation.
④Welding-current
setter/measured-value
indicator [CURRENT]
Sets the welding current (Weld I,
Weld II, Weld III) and indicates
the measured current.
⑤Monitor setter/indicator
[MONITOR]
Sets the upper and lower limits
of the set current on High and
Low to 0-49%, and monitors the
current fluctuation.
⑥Data/Counter setter/indicator
[MODE]
Counts the total number of
welds, number of welds for a
workpiece, and total number of
products, and sets and indicates
various pieces of data such as
the stepper setting of the
welding current, error codes, etc.
⑦Control power switch
[POWER]
Switch for supplying power to
control the CT-110D
Select key
①Schedule No.
setter/indicator
④Welding-current
setter/monitor
display indicator
②State indicator
⑤Monitor
setter/indicator
③Cycle
setter/indicator
⑥Data/counter
setter/indicator
+/- keys
⑦Control power
switch
⑧Weld ON/OFF
key
⑨Weld force key
⑩Count key
⑪Reset key

CT-110D
3.Name and Function of Each Section
3-2
⑨Weld-force key [SQUEEZE]
Each time this key is pressed, the LED at its upper left comes on and goes off
alternately. While the LED is lit up, the weld-force mode is selected and the weld
force is applied while the start signal [START1,2,4,8] is turned on; however, the
weld current does not flow. While the LED is turned off, the normal timer mode is
selected.
⑩Count key [COUNT]
Each time this key is pressed, the LED at its upper left comes on and goes off
alternately. While the LED is lit up, the weld-point counter and production counter
can count. While the LED is turned off, the weld-point counter and production
counter do not count.
Note: The STEPPER COUNTER and TOTAL COUNTER count regardless of
whether the Count key is ON or OFF.
⑪Reset key [RESET]
Functions as a release key in the event of a problem.
Note: This key cannot reset the counter.
(2) Rear Panel
①Current-detecting-coil connector
[COIL]
Connector for connecting the
current-detecting coil (a toroidal coil
or a CT coil) to measure the welding
current
②Input/output-signal terminal block
Terminal block for inputting the start
signal and outputting error signals,
etc. The terminal size is M3.5.
③Power-supply terminal block
Terminal block for connecting the
power supply and the thyristor
contactor. The terminal size is M3.5.
④[DATA OUT] connector (Option)
Connector for outputting data
②Input/output-signal
terminal block
①Current-detecting-coil
connector
③Power-supply
terminal block
④Data-out connector
(Option)
Buzzer

CT-110D
3.Name and Function of Each Section
3-3
(3) Internal Block Diagram
Welding
power
Welding transforme
r
Welding head
Toroidal coil
(For detection of
the secondary constant current)
Thyristo
r
(For detection of primary
constant current)
CT
Transformer for
synchronization
Turn-on pulse
generation
Turn-on angle
command
Source-voltage
detection
Phrase
detection
Control power
source
Weld force
SOL valve Input/output of
various signals
Control
power
Waveform
amplification
Waveform
reproduction
Primary Secondary
A/D conversion
Microprocessor
(CPU)
RAM
ROM
Reference
counter
I/O
Control power
transformer
Panel controller
Panel switch Indication

CT-110D
4.Connection
4-1
4. Connection
(1) Basic Configuration
1) The general system configuration of the CT-110D is as follows:
Example) Installation to stationary welder
2) Precautions for installation
①Confirm that the control is installed (fixed) securely at the specified
locations.
②Confirm the welding power source. The voltages for this device are
indicated below the terminal block.
③Ground the control securely.
①CT-110D
The body of the
constant-current resistance
welding control. Connect
Control power to it.
②Toroidal coil (Option)
Installed to the stationary
welding electrode arm. This is
unnecessary in the primary
constant current control.
③Thyristor contactor (Option)
Connect a welding power
source to this device.
Normally, this device is built
into the body of the welder.
④Foot switch (Option)
Used to start up the
CT-110D, which outputs
signals to the welder in order
to start welding.
①
②③
④

CT-110D
4.Connection
4-2
(2) Connection of Power Source
1) Connect the power source to the power-supply terminal block mounted on the rear
panel.
①Connect the thyristor contactor to the power-supply terminal block on the
rear panel of CT-110D, as shown below.
②Securely connect each wire. Take care not to mistake the Nos. of the wires.
③Connect to the terminal 02/(02) for the voltage you are using.
The connection of 01, (02) or 02 is important for the operation of the thyristor.
If it is connected improperly (if 01 and (02) or 02 are connected inversely), a
no-weld error (07) is indicated or the power is not supplied. Accordingly,
perform connection properly and securely.
When no power-supply error is detected and the current does not flow even
though the power is supplied correctly and CT-110D starts normally, make
sure that 01 and (02) or 02 are not connected inversely.
④Be sure to ground the control.
Ground the E terminal (grounding) of CT-110D in common with the
grounding of the thyristor contactor.
Note: The thyristor contactor, welding transformer, welding head, and
connecting cable are optional.
1
2
3
32
33
34
E
02
(02)
01
K2
G2
K1
G1
01
02
G2
G1
K2
K1
Body
Welding head
Welding transformer Thyristor contactor
Welding power supply
Body
Check the voltage
to connect
Grounding
CT-110D
[ Caution ]
Connection diagram

CT-110D
4.Connection
4-3
(3) Installation Method for the Current-Detecting Coil
1) Installation Method for a Toroidal Coil
①Install the toroidal coil to the secondary side of the welding transformer.
If only one welding head is used, install the toroidal coil as shown below:
Primary side
Toroidal coil
Welding head
Welding transformer
Fig.1 Connector methods for toroidal coil (1)
If two or more welding heads are used, install the toroidal coil as shown
below:
When only one welding head welds at a time
Fig.2 Connector methods for toroidal coil (2)
Primary side Primary side Primary side
or
Toroidal coil Toroidal coil Toroidal coil
Welding head Welding head Welding head
Welding transformer Welding transformer Welding transformer
(Connect the coils in series.)

CT-110D
4.Connection
4-4
When two or more welding heads weld at a time
The current of only one circuit is kept constant in this case.
Primary side
Welding transformer
Toroidal coil
Welding head
Fig.3 Connector method for toroidal coil (3)
②Set dip switch DSW1-(2) to the OFF position (see page 4-7).
③Precautions on installation of the toroidal coil
If the toroidal coil is broken in the constant-current control mode, no
power-supply error is detected and the operation stops. A proper installation
position must therefore be selected for the toroidal coil so that it will not be
broken by the temperature rise of the conductor, mechanism motion,
contact with a workpiece, or the like. In addition, secure the toroidal coil to
the conductor using a band, etc. If the toroidal coil is wound onto the
conductor as shown in Fig. 4-A, an error occurs. Accordingly, wind it as
shown in Fig. 4-B.
Note: No power-supply error is detected in the source-voltage fluctuation
compensation control mode.
Note: The thyristor contactor, welding transformer, welding head, and
connecting cable are optional.
Fig. 4 Making a toroidal-coil loop
A Don't B Do
Band Fasten the coil
using a band

CT-110D
4.Connection
4-5
④Checking for breakage and short-circuiting of the toroidal coil
Breakage of and shorts in the toroidal coil can be checked using a tester, as
the toroidal coil has the internal resistance shown in Fig. 5.
(Keep in mind that the internal resistance changes depending on the type of
toroidal coil.)
Toroidal coil Internal resistance
MB-400L 35–65
MB-45F 130–165
Fig. 5 Internal resistance of toroidal coil
The sensitivity of each toroidal coil is adjusted so that it will detect the current
accurately. If the cable is cut halfway and extended, or if the connector is
disassembled, the current cannot be kept constant. (When using the
toroidal-coil remote, use a special extension cable.)
2) Installation Method for a CT Coil
①Install a CT coil to the primary side of the welding transformer.
CT coil
Welding power supply
Welding transformer
Welding head
Thyristor contactor
②Set dip switch DSW1-(2) to the ON position (see page 4-7).
③Precautions on use of a CT coil
Use a CT coil with a rated primary current of 600 A and a secondary current
of 5 A. Connect a resistor of 0.2 10 W to its secondary side, then connect
both ends to the CT-110D using special connector 14-2A (manufactured
by KOMINE MUSEN ELECTRIC CORPORATION).
Note: The thyristor contactor, welding transformer, welding head, and
connecting cable are optional.
Note: The model number of connector is subject to change without notice.
Depending on the part to be changed, the mounting screw shape
may change and a necessary tool may be different. For the latest
parts information, contact a nearest sales office.
Equivalent internal resistance of coil
Internal
resistance
Cable approx. 2.5 m long Interior of
connector Teste
r
[ Caution ]

CT-110D
4.Connection
4-6
(4) Selecting of Functions
Functions are set using dip switches on the printed-circuit board.
When removing the cover and setting the dip switches on the board, confirm that the welding
power and control power are turned off to ensure safety.
(1) Initial setting of dip switches
OFF
12345678
OFF
12345678
8
7
612 345
OFF OFF OFF OFF OFF OFF OFF OFF
8
76
12345
OFF OFF OFF OFF OFF OFF OFF OFF
DSW1
DSW 2
ＤＳＷ １
ＤＳＷ ２
(2) Functions set using dip switches
DSW ON OFF
DSW1
1 Source-voltage fluctuation compensation
control
Constant-current control
2 Primary-current feedback Secondary-current feedback
3 Output of power-on state signal (Flicker) Output of power-on timing signal
4 Parity check---ON Parity check---OFF
5 Self-holding of start signal at squeeze Self-holding of start signal at weld start
6 Re-power-on---ON Re-power-on---OFF
7 Output of holding-finish-signal pulse Output of holding-finish-signal level
8 When there is a problem with the current
monitor, the holding finish signal is not
output and welding cannot be started again.
When there is a problem with the current
monitor, a holding finish signal is output and
welding can be started again.
DSW2
1 Pulsation function Repeating function
2 Interlock function --- ON Interlock function --- OFF
3 Start with the schedule No. on the panel. Start with the external schedule No.
4 4-schedule start 15-schedule start
5 Output of data No output of data
6 1-cycle control Half-cycle control
7 Variable constant-current correction value Fixed constant-current correction value
8 Kept turned off
[DANGER! High Voltage]
Dip switches
Printed circuit board
Factory default setting of dip switches
(All are set to the OFF position.)

CT-110D
4.Connection
4-7
(3) Explanation of the functions of dip switches
①DSW1-(1): Selects the constant-current control or source-voltage
fluctuation compensation control.
OFF: Constant-current control
ON: Source-voltage fluctuation compensation control
②DWS1-(2): Selects the primary current or secondary current to be
detected in the constant-current control mode. If a coil is
connected for full-wave detection in the source-voltage
fluctuation compensation control mode, set this dip switch
properly.
OFF: Secondary-current feedback
ON: Primary-current feedback
③DSW1-(3): Selects the signal to be output to Pin 23 in the terminal
block on the rear panel.
OFF: Output of the power-on timing signal
ON: Output of flicker
If this switch is set to OFF, the power-on timing signal is
output from when Weld I starts until Weld III finishes,
regardless of the Weld ON/OFF setting. If it is set to ON,
the flicker signal is output only while the power is on during
Weld I, Weld II, and Weld III. The power-on timing signal
and the flicker signal are output from the power-on signal
[WELD ON].
④DSW1-(4): Sets the start-signal parity check function when the
controller is started up in the 15-schedule mode
OFF: The parity check will not be conducted.
ON: The parity check will be conducted.
If this switch is set to OFF, the parity check will not be
conducted. If it is set to ON, the parity check will be
conducted. If a parity error is detected, a start input error
signal (Error code [02]) will be output. Odd parity is
checked. For details, see “(5) Input Method for Start
Signals, 2)” on page 4-11.
⑤DSW1-(5): Selects the self-holding timing for the start signal.
OFF: Self-holding of the start signal at weld start
ON: Self-holding of the start signal at squeeze
If this dip switch is set to OFF, the start signal is held when
welding (Weld I) starts. If it is set to ON, the start signal is
held when the initial weld force (Squeeze) starts.
⑥DSW1-(6): Sets so that the power will or will not be supplied again
when the lower current limit is detected or no current flows.
OFF: Re-power-on --- OFF
ON: Re- power- on --- ON
If this dip switch is set to OFF, power is not supplied again.
If it is set to ON, current increased by 5 % is supplied
(see"4) Timing chart of re-power-on operation" on page
5-7).

CT-110D
4.Connection
4-8
⑦DSW1-(7): Selects the length of time for which the holding finish signal
is to be output.
OFF: Output of the holding-finish-signal level
ON: Output of the holding-finish-signal pulse
If this dip switch is set to OFF, the holding finish signal
[HOLD END] is output for approximately 0.2 seconds, or
while the start signal is being input. If the former is set to
ON, the latter is output for 0.2 seconds.
⑧DSW1-(8): Selects the action to be taken in the event of a current
monitor error.
OFF: When there is a problem with the current monitor, a
holding finish signal is output and welding can be
started again.
ON: When there is a problem with the current monitor, a
holding finish signal is not output and welding cannot
be started again.
⑨DSW2-(1): Selects the pulsation function or repeating function.
OFF: Repeating function
ON: Pulsation function
If this dip switch is set to OFF, the repeating function is
selected and, when the weld sequence [OF] LED on the
front panel is selected, the [CYCLE] key is used to set the
off time in the repeating mode (see 2) on page 5-5). If the
dip switch is set to ON, the pulsation function is selected
and, when the weld sequence [OF] LED on the front panel
is selected, the [CYCLE] key is used to set the number of
pulsations (see 1) on page 5-4).
.
⑩DSW2-(2): Selects ON or OFF of the interlock function.
OFF: Interlock function --- OFF
ON: Interlock function --- ON
If this dip switch is set to OFF, the interlock function is
turned off. In such a case, the INTERLOCK/COUNT
RESET is used to input the count reset signal [COUNT
RESET], and the INTERLOCK/COUNT UP is used to
output the count-up signal [COUNT UP] (see 3) on page
5-6). If the dip switch is set to ON, the interlock function is
selected. In such a case, the INTERLOCK/COUNT RESET
is used to input the interlock signal [INTERLOCK], and the
INTERLOCK/COUNT UP is used to output the interlock
signal [INTERLOCK].
⑪DSW2-(3): Selects a schedule No.
OFF: Start with the external schedule No.
ON: Start with the schedule No. on the panel.
If this dip switch is set to OFF, a schedule No. is selected
and the operation starts upon reception of start signal
[START 1, 2, 4, and/or 8] from outside.
If the dip switch is set to ON, the operation starts upon
reception of a start-signal No. selected using the panel.
The schedule can be changed by pressing the SCHEDULE
[NUMBER] key.
An external start signal is only for starting welding; the
schedule cannot be selected.

CT-110D
4.Connection
4-9
⑫DSW2-(4): Selects start in 4-schedule start mode or 15-schedule start
mode upon reception of an external start signal.
OFF: 15-schedule start mode
ON: 4-schedule start mode
If this dip switch is set to OFF, 15 schedules made by
combining start signals [START 1, 2, 4, and/or 8] are
selected. If the dip switch is set to ON, the
lowest-numbered start signal among 1, 2, 4, and 8 that is
on 20 ms after the first start signal is turned on, is selected.
⑬DSW2-(5): Selects Data Out
OFF: Does not output data
ON: Outputs data
The data-out function is optional. Set this switch to the OFF
position when this option is not provided.
⑭DSW2-(6): Selects the control speed in constant-current control
OFF: Half-cycle
ON: 1 cycle
⑮DSW2-(7): Sets the correction value for the constant-current control,
or sets it so as to be variable.
OFF: Fixed constant-current correction value
ON: Variable constant-current correction value
This switch should normally be in the OFF position.
When the weld control is used with a single-phase welding
machine, it is rare for the welding current to rise abnormally
to overshoot or for an extremely slow rise-up to occur. In
such case, set this switch to the ON position in order to
make variable the constant-current correction value. When
setting DSW2-(7) to ON, Mode Nos. 8 and 9 are selectable
on the panel. Set the correction value for the initial rise
(G1) in Mode No. 8 (a larger setting provides a larger
amount of correction). Set the correction value for the
interval (G2) in Mode No. 9 after the current exceeds the
current setting (a larger setting provides a larger amount of
correction). When there is a big difference between
currents on the plus side and the minus side (the currents
are not balanced), set DSW2-(6) to ON (1 cycle).
Current setting
Shipped at G1 = 50, G2 = 50