Web Techniques WT-25 Series Bedienungsanleitung

07-1002

Owner's Manual and

Guide to Operations

MODEL WT-25

ROLL LABEL

REWIND MACHINES

910 Bolger Court, Fenton, MO 63026 (USA) (636) 343-0806 (800) 325-9777

IMPORTANT: Read all instructions before using.

07-1002

Table of Contents

Safety Instructions.......................................................... 1

Purpose (General Overview) .......................................... 1

Operator Controls (Web Transport System) .................. 1

Rewind Direction Switch ............................................ 1

Main Speed Control Knob........................................... 1

Start Pushbutton ........................................................ 1

Stop Pushbutton......................................................... 2

Idle Speed Control Knob............................................. 2

Power On/Off Switch (And Power Indicator) ............. 2

Unwind Tension Control............................................. 2

Coreholders .................................................................... 2

Lift-Off Cam-Lock Coreholders ................................... 2

Air Inflatable Coreholders (Optional) ......................... 3

Rewinding....................................................................... 3

Web Path Illustration.................................................. 4

Straightening .............................................................. 4

Counting System............................................................. 4

Programming Deceleration and Stop Points...............4

Determining Preset B (Stop Point) ..............................5

Determining Preset A (Deceleration Count Setting) ...5

Automatic Reset..........................................................5

Electrical Control Adjustments........................................5

Minimum Speed..........................................................5

Deceleration Rate........................................................5

Acceleration Rate........................................................5

Procedure for Re-Programming KEP MC2A9 Counters...6

Unlocking the Counter ................................................6

Setting Scale Factors ...................................................6

Setting Count Mode ....................................................6

Setting the Relay Operation........................................6

Setting the Counter Lock Code....................................6

Locking the Counter ....................................................6

SAFETY INSTRUCTIONS

RULES FOR SAFE OPERATION

1. Know your machine. Read and understand the

owner’s manual and labels affixed to the machine.

Learn its applications and limitations as well as the

specific potential hazards peculiar to this machine.

2. Grounding. This machine should be grounded while

in use to protect the operator from electric shock.

Machines which are designed to run on less than

150 volts are equipped with a 3 conductor cord and

3 prong grounding type plug to fit the proper

grounding type receptacle. The cord is long enough

that it should not be necessary to use extension

cords. Temporary extension cords and receptacle

adapters should be used only until a properly

grounded outlet can be installed by a qualified elec-

trician. Use only a 3 wire extension cord of ade-

quate size to handle the rated full load current of

the machine as indicated on the machine name-

plate. If an adapter is used to accommodate a 2

hole receptacle, the grounding ear must be at-

tached to a known ground. Never remove the 3rd

prong (grounding blade) from the plug on the ma-

chine electrical cord.

3. Keep the machine guards in place and in good work-

ing order.

4. Avoid dangerous environments. Do not use the ma-

chine in a damp or wet location. Keep the work area

well lit.

5. Wear proper apparel. No loose clothing (i.e.

neckties) or jewelry to get caught in moving parts.

Wear protective covering to contain long hair.

6. Stay alert. Watch what you are doing. Use common

sense. Do not operate the machine when you are

tired. Do not use the machine after taking drugs, al-

cohol or medications.

READ ALL INSTRUCTIONS AND SAVE THEM FOR FUTURE

REFERENCE.

PURPOSE (GENERAL OVERVIEW)

WT-25LC and WT-25LCI series rewind machines are

made for the purpose of rewinding rolls of narrow web

products. In general, these are paper, film or foil prod-

ucts which are stiff enough to stand on edge (vertically)

throughout the web path of the machine. Cloth and

other woven materials generally do not rewind well (if

at all) on vertical spindle rewind machines. Abrasive

materials (sandpaper rolls, etc.) will damage the ma-

chine and should not be used. It is suggested that you

take a few minutes to become familiar with the controls

and operating characteristics before attempting to

rewind actual rolls.

WARNING

AS WITH ANY MACHINE, CAUTION MUST BE EXERCISED

TO PREVENT INJURY. NEVER OPERATE THE MACHINE

WITH GUARDS REMOVED. THE CONTROL CABINET

DOOR MUST BE KEPT CLOSED (SECURED BY SCREWS)

EXCEPT WHILE INTERNAL ADJUSTMENTS ARE BEING

MADE. ALWAYS EXPECT THE MOTOR TO TURN ON

WHEN THE START PUSHBUTTON IS OPERATED.

CAUTION

BEFORE CONNECTING THE MACHINE TO A SOURCE OF

ELECTRICAL POWER, OPEN THE CONTROL CABINET AND

VISUALLY INSPECT THE CONTROL PANEL TO BE SURE

THAT NO COMPONENTS OR WIRE CONNECTIONS HAVE

WORKED LOOSE IN SHIPMENT. WHEN INSPECTION IS

COMPLETE, CLOSE AND SECURE THE CABINET DOOR.

OPERATOR CONTROLS (WEB

TRANSPORT SYSTEM)

REWIND DIRECTION SWITCH

This switch determines the direction of rotation of the

rewind coreholder. When in the “PRINTING OUT” posi-

tion, the coreholder will turn in a counterclockwise di-

rection for winding with the labels on the outside of the

roll. In the “PRINTING IN” position, the rewind core-

holder will turn clockwise for winding labels on the in-

side of the roll.

MAIN SPEED CONTROL KNOB

Located next to the start pushbutton, the main speed

control knob is used to set the running speed before the

deceleration count is reached. Turning the knob clock-

wise will increase the speed. Rapid speed increases can

cause telescoping of the rewind roll and web breakage.

Therefore, the motor control has been pre-adjusted to

accelerate at an appropriate rate.

START PUSHBUTTON

Pressing of the START pushbutton will perform two

tasks. Most importantly, the motor control is enabled,

permitting the motor to run at the set speed. In addi-

tion, the START pushbutton will also reset the counter

to zero if the counter stop setting (Preset B) has been

reached

STOP PUSHBUTTON

The STOP pushbutton provides rapid stopping of the

machine. When pushed, the main drive motor is turned

off and dynamic motor braking is applied. Although it is

also possible to stop the machine by turning the speed

control down to zero, it is recommended that the STOP

pushbutton be used to insure that the machine will not

start again until desired.

IDLE SPEED CONTROL KNOB

The idle speed control knob is located on the control

cabinet on the far right hand side of the machine. When

the deceleration preset number (Preset A on the coun-

ter) is reached, provided you have the COUNT/STAND-

BY switch in the “COUNT” mode, the motor control will

automatically switch from the main speed control knob

to the idle speed control knob to the idle speed control

knob. The speed range of this knob is restricted to only

the lower twenty percent of the speed range. Once the

counter has been reset, the main speed control knob is

reactivated.

POWER ON/OFF SWITCH (AND POWER

INDICATOR)

The POWER ON/OFF switch is used to turn the main

power to the machine on and off. The switch has an

indicator light that illuminates when power is on.

UNWIND TENSION CONTROL

The unwind brake is a mechanical friction type consist-

ing of a brake band wrapped around a drum. An ad-

justing knob on the front of the machine provides a

means of tightening the brake band. Turning the knob

clockwise increases the unwind brake tension. To set

the brake initially, turn the unwind coreholder manually

and adjust the brake tension until a slight amount of

drag can be felt when turning the coreholder. When the

machine is running, make small adjustments as required

to obtain the desired web tension.

COREHOLDERS

Web Techniques rewind machines are available with

various types of coreholders. Lift-off cam-lock core-

holders are supplied as standard equipment. Air inflat-

able coreholders are available as an option. In addition,

some machines are configured with a combination of

both systems (usually a lift-off cam-lock coreholder on

the unwind and an air inflatable coreholder on the re-

wind). An air inflatable coreholder is required on the

rewind position in order to use an optional slitting

attachment.

LIFT-OFF CAM-LOCK COREHOLDERS

As the name implies, these coreholders can be removed

from the machine by simply lifting them straight up

from the table top and out of their sockets. The ad-

vantage of this type of coreholder is that heavy rolls can

be installed and removed by sliding them onto and off

the machine. If your machine is equipped with lift-off

cam-lock coreholders, they will be packaged separately

and must be installed on the machine.

A) Locate the package containing the coreholders. Ob-

serve that there is a slotted shaft protruding from

the lower end of the coreholder.

B) GENTLY lower the shaft into the socket in the un-

wind and rewind spindle. The shaft will probably

come to rest on top of the drive pin inside the spin-

dle and the bottom of the coreholder will be ap-

proximately ⅜ inch above the table top. Simply ro-

tate the coreholder until the drive pin and slot align

and the coreholder drops the rest of the way into its

socket.

C) Remove and install the coreholder several times so

that you become familiar with the “feel” of proper

coreholder engagement. This is important because

when the coreholder is installed by inserting it

through the core of a roll of material, you will not

be able to see that it is fully engaged and will have

to rely on feel.

CAUTION!!

DO NOT lay the coreholder on its side on the table top

when it is removed to change rolls or it may roll off and

become damaged. There is a hole in the table top

immediately to the right side of the pedestal mounted

counter. The purpose of this hole is to provide a place

to store coreholders when changing rolls.

D) Tightening and loosening of the cores is accom-

plished by turning the core on the coreholder. This

causes the cam to rotate and wedge against the in-

side of the core. To install a core, rotate the cam

until it is flush with the body of the coreholder.

Slide the core over the coreholder until it is resting

flat on the table. Twist the core until it locks on the

coreholder.

In actual operation the cores will usually lock

themselves once the rewind starts to turn.

However, locking them by hand is preferred be-

cause the web can be drawn tight before starting

the machine, thus reducing the chance of web

breakage. Since the cams will lock regardless of

which way they are turned, it is important that they

be turned the right way or they will again loosen

once web tension is developed. There are two basic

rules for determining which way to rotate the cams

to lock the cores:

(1) On the unwind, the cam should be rotated in

the direction the roll will be turning (usually

counter-clockwise).

(2) On the rewind, the cam should be turned oppo-

site to the direction of rotation (usually clock-

wise).

Until you become familiar with this operation, it

may be desirable to mark the top of the coreholder

with an arrow to indicate the lock and unlock

directions.

When a full roll is wound it can be difficult to

determine which direction it should be rotated to

release it from the coreholder. The two rules to

remember to loosen a core are:

(1) On the rewind, turn the core in the direction in

which the roll was wound (normally counter-

clockwise).

(2) On the unwind, turn the core in a direction

opposite to the direction in which the roll was

turning (normally clockwise)

NOTE

An alternate method of loosening the roll on the rewind

is to hold the roll tight against the top of the table and

turn the coreholder in the direction opposite to the way

it was running.

AIR INFLATABLE COREHOLDERS (OPTIONAL)

Air inflatable coreholders offer the advantage of ex-

panding concentrically over their full length simply by

flipping a switch. Machines which are equipped with a

slitting attachment require this type of coreholder sys-

tem on the rewind. That is so that ganged cores (one for

each slit web) can be individually gripped and driven.

Machines that have been equipped with air inflatable

coreholders require connection to a supply of air pres-

sure. A quick disconnect fitting has been provided for

this purpose (located on the back of the machine just to

the rear of the main drive motor). A mating female dis-

connect is supplied as a convenience in hooking up air.

The machine should be connected to an air source ca-

pable of supplying at least 50 psi. Individual regulators

on the machine allow the operator to adjust the pres-

sure between zero and 50 psi. Very narrow cores re-

quire only a small amount of pressure as excessive pres-

sure may burst the core. The coreholders can then be

inflated and deflated by means of toggle switches lo-

cated next to the pressure regulators.

CHANGING FROM 3-INCH TO 1-INCH AIR INFLATABLE

COREHOLDERS

A) Make sure that the coreholder is deflated.

B) Grasp the coreholder with one hand while loosen-

ing the socket head bolt in the center of the top of

the coreholder.

C) Lift the coreholder from the reroll table.

D) Loosen the four screws and remove the three-inch

coreholder adapter from the rewind spindle.

E) To insure that the adapter and retaining screws are

not lost, assemble the adapter onto the three-inch

coreholder.

F) Insert the one-inch coreholder into the hole in the

rewind spindle and align the mounting holes with

the holes in the flange.

G) Place the one-inch coreholder retaining ring on top

of the coreholder flange and install the four retain-

ing screws.

H) Check the operation of the coreholder by inflating

and deflating.

REWINDING

Learning to use the rewind machine should be accom-

plished in steps. Each step will build upon the previous

step. This will be more efficient than trying to learn how

to do everything at once. The first step will be learning

to thread the machine and operate the motor control to

wind rolls. Once you understand how to do that, you

can move on to setting up the counting system to

measure roll length.

A) Set the COUNT/STAND-BY switch to the “STAND-

BY”. This will make it possible to operate the

machine regardless of how the counter system is

set up.

B) Turn the main power ON/OFF switch to the “ON”

position.

C) Install a roll of labels on the unwind. Pull the free

end of the material off the roll until the coreholder

locks. Thread the material as shown in Figure 1.

D) Install a fresh core on the rewind and fasten the

free end of the web to the core with tape.

E) Check the position of the following switches:

SWITCH

POSITION

STOP/BYPASS PRESET

BYPASS

REWIND DIRECTION SWITCH

AS REQUIRED

MAIN SPEED CONTROL

MINIMUM

IDLE SPEED CONTROL

MID RANGE

WEB PATH ILLUSTRATION

Figure 1 Web Path for WT-25

F) Press the START button. Gradually increase the

speed setting until the web begins moving.

G) With the machine running slowly, push against the

face of the web between the last idler roll and the

rewind to determine the web tension. Adjust the

unwind brake tension as necessary to produce the

desired rewind tension.

H) Continue to increase the speed setting until the

machine is running full speed. Then try reducing the

speed. If the web begins to go slack and form a loop

on the top of the machine, the unwind tension is set

too low. Increase the tension to a point where the

web remains stable during acceleration and decel-

eration cycles.

I) Press the STOP button to stop the machine.

STRAIGHTENING

If the rewound roll is not straight due to splices or any

other cause, it may be straightened easily as follows:

A) Place the REWIND DIRECTION switch in the oppo-

site position.

B) Grasp the outer wrap of material on the rewind and

start the machine running very slowly.

C) Allow the roll to expand as it turns in the reverse

direction.

D) Once the roll is loosened all the way to the defect,

stop the motor.

E) Reverse the DIRECTION SWITCH and re-tighten the

roll.

COUNTING SYSTEM

The rewind machine incorporates a bi-directional dual

preset counter. This permits the operator to set sepa-

rate deceleration (Preset A) and stop (Preset B) points.

The counter is driven by means of two magnetically

operated reed switches located in the table top beneath

the counter drive roll. A magnet in the lower end of the

counter drive roll operates the reed switches. The

combined signals from each reed switch allow the

counter to automatically count up or down depending

on the direction of rotation of the counter drive roll.

This is primarily used when pulling defective material

backwards off the rewind roll. Be sure the web is held

against the counter drive roll when it is pulled

backwards.

PROGRAMMING DECELERATION AND STOP

POINTS

To set the final count, press the PRE B button on the

counter once. In approximately two seconds the current

value will be displayed. To change the value, simply

press the button under the digit that you wish to

change. Each time the button is pressed, the digit will

increment by one. When the desired value has been set,

push ENTER once to store the value into memory. To set

the count at which you wish the machine to go into the

deceleration mode, push PRE A and follow the same

procedure as described above. If you do not wish to

have a deceleration period, simply set the final count

Preset B as normal and set Preset A to any number

larger than Preset B.

NOTE

All Rewind Machines are equipped with an electronic

programmable counter. This counter is quite sophisti-

cated and is capable of performing certain functions not

applicable to our usage. While programming the coun-

ter, you will notice “LoC” will appear. This is to let you

know the manufacturer has programmed the counter to

deny access to the functions not required for our

application.

While it is possible for the counter to become unlocked

(possibly due to line noise, electrical storms, etc.), it is

important to note that this will disable the counter from

performing as it should. In order to correct the

situation, the counter will need to be re-programmed.

For your convenience, we have provided re-

programming instructions located in the final section of

this manual in the event that this occurs

DETERMINING PRESET B (STOP POINT)

The counter registers one count per ten inches of web

travel when using the standard ten-inch circumference

counter drive roll. This makes it easy to calculate the

appropriate number to enter into the counter in order

to wind a roll of a given number of labels. The number is

calculated as follows:

𝐂𝐨𝐮𝐧𝐭 = (𝑵𝒐.𝒐𝒇 𝒅𝒆𝒔𝒊𝒓𝒆𝒅 𝒍𝒂𝒃𝒆𝒍𝒔)(𝒓𝒆𝒑𝒆𝒂𝒕 𝒍𝒆𝒏𝒈𝒕𝒉)

𝟏𝟎

EXAMPLE: To wind a roll of 1000 labels of 3 inch repeat

length, the number 300 would be entered as the final

count (Preset B).

𝐂𝐨𝐮𝐧𝐭 = (𝟏𝟎𝟎𝟎)(𝟑)

𝟏𝟎 =𝟑𝟎𝟎

Figure 2 Counter Package

DETERMINING PRESET A (DECELERATION COUNT

SETTING)

The point at which deceleration should begin depends

on many factors (rewind speed, finished roll diameter,

etc.). Therefore you probably will need to test your de-

celeration count setting each time you rewind a new

type of label. The desired technique is to have the ma-

chine stop shortly after it decelerates fully and has sta-

bilized at the lower speed. For the first attempt try a

setting that is fifty counts less than the final count. This

means that the counter will begin to decelerate the

machine 50 counts before the end of the roll.

EXAMPLE: If the final count (Preset B) is 300, then the

deceleration count (Preset A) should be set at 250.

AUTOMATIC RESET

After winding a roll (and reaching the final preset num-

ber), the counter will reset to zero automatically when

the start pushbutton is pressed to start a new roll. This

is the only time automatic resetting can occur. Counting

will proceed normally each time the machine is stopped

and started (without resetting) until Preset B has been

reached. You may reset the counter to zero at any time

by pushing the “RST” button on the counter.

ELECTRICAL CONTROL

ADJUSTMENTS

The following list of settings has been pre-adjusted by

Web Techniques, Inc. to cover most applications. If

these settings are not optimal for your requirements,

adjustments may be made with discretion. These set-

tings are located on the printed circuit board closest to

the terminal blocks on the motor control. The motor

control is located inside the control cabinet.

MINIMUM SPEED

If a higher than zero minimum speed is desired, readjust

the minimum speed by turning the main speed control

knob on the front of the machine to zero setting (full

counterclockwise position). Then adjust the trim poten-

tiometer marked MIN to the desired setting.

DECELERATION RATE

If your labels become loose during the deceleration

period with the web tension set at the necessary level,

you should increase the deceleration rate by turning the

trim potentiometer marked DECEL clockwise. If you feel

that the deceleration period is too long, turn the decel-

eration trim potentiometer counterclockwise to reduce

the deceleration rate.

ACCELERATION RATE

Turning the trim potentiometer marked ACCEL clock-

wise increases the amount of time required for the mo-

tor to reach full speed. The setting should be such that

the web does not break when the motor is started.

PROCEDURE FOR RE-

PROGRAMMING KEP MC2A9

COUNTERS

UNLOCKING THE COUNTER

1. Press LOCK. The display will show “CodE” for a few

seconds.

2. When “CodE” disappears, enter the code 13579 and

press ENTER.

3. The counter will then show “un LoC” for a few se-

conds. You are now ready to reprogram the

counter.

SETTING SCALE FACTORS

1. Press PRGM.

2. When “FACtor” appears, press ENTER.

3. When “dP F A” appears, press PRGM. Then press

ENTER.

4. Set “dP F A” to 1 if it is not already set to 1 and

press ENTER.

5. When “dP F b” appears, press PRGM. Then press

ENTER.

6. Set “dP F b” to 1 if it is not already set to 1 and

press ENTER.

7. Press ENTER again.

SETTING COUNT MODE

1. Press PRGM twice.

2. When “Count” appears, press ENTER. Then (if

necessary) press PRGM until “rSt 0” appears.

3. Press ENTER.

4. When “dP LoC” appears, press PRGM. Then press

ENTER.

5. If necessary, press PRGM until “A nEtb” appears.

6. Press ENTER.

7. If necessary, press PRGM until “ASub b” appears.

8. Press ENTER.

9. If necessary, press PRGM until “Hi CPS” appears.

10. Press ENTER.

SETTING THE RELAY OPERATION

1. Press PRGM 4 times (until “rELAY” appears).

2. Press ENTER.

3. Set “A XX.X” to “A 00.0” and press Enter.

4. Set “b XX.X” to “b 00.0” and press Enter.

SETTING THE COUNTER LOCK CODE

1. Press PRGM 3 times (until “LoC” appears).

2. Press ENTER.

3. If necessary, press PRGM until “LC Pr9” appears.

4. Press ENTER.

5. The display will show “CodE” for a few seconds.

When “CodE” disappears, enter the code 13579 and

press ENTER.

LOCKING THE COUNTER

1. Press LOCK. The display will show “CodE” for a few

seconds.

2. When “CodE” disappears, enter the code 13579 and

press ENTER.

3. To verify that the counter is locked, press the PRGM

key. The “LoC” message should appear on the

counter.

NOTE

When locking and unlocking the counter, the procedure

is the same. Each time the Lock code is entered, it will

either lock or unlock the counter

Andere Handbücher für WT-25 Series

Inhaltsverzeichnis

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