0 Nofdson* CORPORATlOU / Amherst. Ohio 44001

/SSUED 918 1

TECHNICAL PUBL /CATION 57-l 5-o

MANUAL 57-I 5

PALLETIZING TIMER

MOD/EL CT-8

P/N 104 498

SUPERSEDES 12/76 NORDSON CORFORATION 1981 Rights Reserved

5 7-Pi-oi 0 Nordson coapoaba TIOU / Amherst, Ohio 44001

Title Page . . .

Contents . . .

Description . . .

Specifications . .

Installation . . .

Operation . . .

Adjusting Bead Placement

Daily Operation . .

Trouble Shooting . .

Electrical Diagram .

Illustrated Parts List .

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Recommended Spare Parts List

Supplemental Parts List .

ISSUF o 12/76

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CONTENTS

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. 57- 15-o

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TECHNICAl PUBLICATION

LITHO U.S A.

SUPERSEDES

CORPORATION / Amhersr, Ohio 44001 TECHNICAL PUBLICATION 5 7- 15 - 1

PALLETIZING TIMER MODEL CT-8

Figure 1 - Model CT-8 Timer

DESCRIPTION

The Model CT-8 T’ tmer is a solid-state sequential timing device that has four (4) timers and two

(2) output channels.

A photocell-light source triggering device starts the timing sequence which consists of an initial time interval followed by three additional independent time intervals.

The initial time interval may be programmed to provide a delay or duration sequence depending

upon application requirements.

The CT-8 Timer may be used in conjunction with a single-acting pump applicator and automatic

gun(s) to accurately position hot melt beads on cases in palletizing applications.

In such an application the initial time interval and three following interval sequences signal the

single-acting pump. The second and forth time interval trigger the automatic gun(s).

NOTE: The CT-8 has two output channels each capable of accommodating a maximum current draw of 2 amperes @ 24 VDC. However, no more than 2 amperes may

be actuated during any one time interval.

momentary short.

The timer output will withstand a

0 When the CT-8 must be used.

is used with the HM VIII applicator a low current draw solenoid

Use filter-regulator-solenoid assembly P/N 243 321.

Part No.

243 321 901 081

973 000 901 741 973 372

Description 1 Qty. 1

Solenoid/Filter-Regulator, 115 VAC/24 VDC Ref. . Valve, Solenoid, 115 VAC/24 VDC 1 . Nipple, Close, l/8 NPT

1

1 e Filter-Regulator w/Gage, l/4 NPT 1 . Bushing, Reducing, l/4 to l/8 NPT 1

SIIPFRcFncc 17/7h CCFYRIGHT fi> 1977 NCIRDSON

5 7- 15 - 2 0 Nordson CORPORATION / Amhersr, Ohio 440171 TECHNICAL PUBLICATION

SPECIFICATIONS

A

li. 0,

r E

i k-----c

A. 13.5 in. (342.9 mm)

B. 10.5 in. (266.7 mm)

c. 5.25 in. (133.4 mm)

D. 8.0 in. (203.2 mm)

E. 12.75 in. (323.9 mm)

.

Figure 2 - Model CT-8 Dimensions

m - T 1 I - PUMP OUTPUT t

.-. GUN OUTPUT

Time lnterva

Time lnterva

Range (mill i seconds)

Input Trigger

Repeat Accuracy Error

Temperature Drift

Low High

50-318 ms 150-1,000 ms

8-108 ms 30-360 ms

50-318 ms 150-1,000 ms

8-108 ms 30-360 ms

Photosensor,, Break1 ig ht

Less than + 1% of set time -

Less than + :3% from 32’-14OOF (O”-60°C) -

Operating Temperature Range 32OF (OOC) to 14O’F (6O’C)

I output 24 VDC - Two outputs with 2 ampere maximum current draw

Input Power Requirements 295 050 100 VAC, 50/60 1 Phase 295 051 115 VAC, 50/60

Hz,

Hz, 1 Phase 295 052 200 VAC, 50/60 Hz, 1 Phase 295 053 230 VAC, 50/60 Hz, 1 Phase

Input Trigger Parts List:

Part No.

937 119

937 191

Description

Light Source, Photosensor

Receiver, Photosensor

ISSUED 7/79 SUPERSEDES 7/i77 LITHO U.S.A.

0 Nordson CORPORATION /Amherst, Ohio 44001 TECHNICAL PUB1 /CATION 5 7- 15 - 3

INSTALLATION

Remove the CT-8 Timer from the shipping container. Careful I y inspect the components for shipp- ing damage. Open the CT-8 cabinet door and visually check for loose connections and broken wires .

1. Install the timer on the parent machine or separate stand so that the front panel is readily accessible,

NOTE: Do not subject the timer to excessive vibration. Use vibration insulators if necessary.

Do not subject the timer to excessive dust or moisture.

2. Open the cabinet door after loosening the two (2) retaining clip screws.

3. Make all electrical connections on the terminal board (TB-1) located in the upper right corner of the cabinet.

NOTE: There are four (4) models of the CT-8 Timer available. Be sure to connect the timer to the correct power supply.

Applying the incorrect voltage may damage the components.

To make the electrical input connections follow these steps:

a. Confirm the voltage requirements of your CT-8. Check the nameplate for part number and voltage specifications.

NOTE: Do not field convert the timer from one voltage requirement to another.

b. Attach Ll to terminal #l; attach the neutral side of the power supply to terminal #2; secure the grounding wire to terminal #3.

1 2 3 4 5 6 7 8 9 10 11 12 TB- 1

GND.

NEUTRAL & LINE

t

AC INPUT

Figure 3 - Input Power Electrical Connections

To avoid electrical shock during installatiion and trouble shooting install a circuit breaker on the service line ahead of the Timer. Using this circuit breaker, shut off all power to the timer during installatiion and service operations.

Position and secure the photocell and light source on the parent machine in the appropriate location. For best results, position the photocell and light source as close together as possible. The maximum distance should be no more than 6 Ft. (1.8 meters). Make the electrical con- nections using the following steps:

LITHO U.S.A.

/SSUEO 12/76 COPYRIGHT @ 1976 NORDSON

TECHNICAL PUBLICATION 57-15-4 0 Nordson CORPORATION /Amherst, Ohtb 4400t

INSTALLATION, (Continued)

4. To connect the trigger input (photocell receiver) electrically to the CT-8:

For photosensor break1 ig ht (or normally closed switch) mode connect each lead wire to

Is #4 and #5. Then s cure le shield to terminal P 4.

T

PHOTOSENSOR

termina BREAKLIGHT (Bk.L)

the cab MODE

NOTE: Ground the shield at terminal #4. Do not ground the shield at the other end - false triggering may result.

PHOTOSENSOR RECEIVER

NOTE: NO JUMPER

BET WEEN

485

0 The Black lead must be connected at terminal #4. See 57-O-9.

Figure 4 - Trigger Input Connections

5. Connect the light source electrical leads to terminals #7 and #8.

6. Connect the pump and gun solenoids (24 VDC only) to the Timer in this manner:

a. Pump solenoids are connected to terminals #9 and #lo.

b. Gun solenoids are connected to terminals #l 1 and #12. - 0 Maximum current draw is 2 amps.

Do not short out or jumper terminals #9, #lo, #ll, and #12.

7. The CT-8 is ready for operation.

(ELK) (GRN) INPUT (~.~VAC) TO SOLENOID

BREAKLIGHT VALVE COILS MODE (24VDC)

Figure 5 - TB-1 Electrical Connections

ISSUED 7/77 LITHO U.S /

SUPERSEDES 5p7

0 Nordson CORPORATION /Amherst Ohio 44001 TECHNICAL PUB1 /CATION 5 7- 15- 5

OPERATION

The CT-8 Timer is signalled by a photocell-light source.

The gun(s) solenoid 24 VDC only, is connected electrically to the gun output channel of the timer terminals #ll and 412 on TB-1.

The single-acting pump solenoid (24 VDC only) is connected to the pump output channel (terminals #9 and #lo on TB-1).

NOTE: Each gun must be activated by its own solenoid. The CT-8 will accommodate a maximum of two 24 VDC solenoids with a maximum current draw of 2 amperes.

Circuit Board Controls

The CT-8 offers two time ranges for each time interval. The time range is selected by moving a slide switch to the appropriate position.

Each slide switch corresponds with a single-turn potentiometer located on the cabinet face.

Switch ~ I- Time Interval1

A TI-1 B TI-2 C TI-3 D TI-4

Sliding the switches toward the rear of the cabinet provides the low (short) time range.

Sliding the switches toward the front of the cab- inet provides the high (long) time range.

The PUMP INTERVAL OUTPUT switch E de- termines whether the single-acting pump will be actuated during the first time interval.

Sliding switch E toward the 0

front of the cabinet will cause thepump to actuate during the Time Interval 1.

Sliding switch E toward the 0 rear of the cabinet will delay the pump actuating until Time Interval 2. Figure 6 - Circuit Board

The fuse@protects the circuit board from damage due to electrical failure (overload).

LITHO U.S.A.

ISCIIEII s/77 COPYRIGHT (?) 1977 NORDSON

57-15-6 0 Nordson CORPORATION /Amherst, Ohio 44~01

OPERATION, (Continued)

Adiustina Bead Placement on the Case

TECHNICAL PUB1 ICATION

1.

2.

3.

4.

5.

6.

7.

Turn on the Hot Melt applicator and gun system. ,Allow the system to reach the recommended

application temperature.

NOTE: Refer to the Applicator Service Manual for correct operation instructions.

Turn the CT-8 “ON ‘I.

Slide switch 0 E (see Figure 6) to the appropriate position.

a. If the pump is to actuate during the initial time interval slide the switch to the rear of the cabinet.

b. If the pump is to actuate during the second time interval slide the switch to the front of the cabinet.

Using the Nomograph (57-O-5) set the potentiometers to the approximate time intervals.

Run a case through the machine. Check case flaps for bead position. Adjust potentio- meters if bead position is not correct.

When the bead position and pattern is acceptable lock the potentiometers in place.

The CT-8 is programmed for use.

Once the CT-8 Timer has been installed and the time intervals set, it is not necessary to re- adjust the Timer unless the line speed is altered or substrate size (bead pattern) is changed.

Dail Y Start-Uo

1. Turn the Timer ON at its toggle switch.

2. Turn the Hot Melt applicator “ON”.

Daily Shut-Down

1. Turn the Timer OFF at its toggle switch.

2. Turn the Hot Melt applicator “OFF”.

lssum 12/76 SUPERSEDES LITHO U.S.A.

0 Nordson CORPORATION /Amherst. Ohio 44001 TECHNICAL PUBLlCATlON 5 7-15-7

General

TROUBLESHOOTING

As with any solid-state device, the Model CT-8 requires no periodic maintenance unless the unit is subjected to adverse environmental conditions such as dust, vibration or moisture. Neverthe- less, difficulties may occur with the operation of a timer system. Before trouble shooting the CT-8, determine that the problem does in fact rest with the control.

Applicator Operation

The capability of an applicator is also a factor in obtaining satisfactory operation. Insure that air pressure to the pump and the gun solenoids are correct and constant. Erratic gun firing can result if the triggering air pressure is inadequate.

Operating air to the solenoid must be filtered to remove dirt and water. Lubrication usual I y is not required.

Physical Conditions

The guns should be mounted securely, and the distance to the substrate should be uniform and constant.

Air movement around the guns can have an adverse effect upon the system’s operation. The guns should be shielded from moving air that cannot otherwise be eliminated.

CT-8 Operation

Trouble shooting the CT-8 usually can be limited to the terminal board (in the upper right corner of the cabinet) and the potentiometers.

If the adhesive output lamps (on the cabinet face) flash, the problem is probably outside the Time Interval Control.

The following chart will help in checking out the CT-8 unit:

I PROBLEM I CAUSE

No power to timer (unit on lamp OFF) Chleck 1 amp slow blow fuse Chleck continuity of toggle switch Check input power connections

Guns or pump not firing (output light FLASHES) Check nozzle for clog Check solenoid and coil Check photocell/light source Check solenoid circuit voltage

Guns not firing (output light NOT FLASHING) Check output lamp Check fuse on circuit board Check slide switch(s) for continuity Check transformer secondary Check potentiometers Check transistor and circuit board for

1 proper vol t.age (see Page 57-15-o).

LITHO U.S.A.

ISSUED 1 z/76 SUPERSEDES COPYRIGHT @ 1976 NCIRDSON

5 7- I 5- 8 0 Nordson CORPORATION /Amherst, Ohio 44001 TECHNKAL PUB1 ICATION

TROUBLE SHOOTING, (Continued)

PROBLEM I CAUSE I

Guns fire erratical I y Check photocell/light source (or limit switch) Check potentiometers Check gun solenoid coil Replace circuit board

Shut off all power to the CT-8 before opening the control cabinet. Use the cir- cuit breaker you installed ahead of the timer. Conduct all continuity and re- sistance checks with the power off.

To check the sinale-turn dials:

1. Unplug the printed circuit board at Jl (refer to Electrical Diagram).

2. Rotate the dials counter-clockwise to zero.

3. Attach an ohmmeter to the two outside terminals on the potentiometer.

4. Set the meter to the 1OOK scale.

5. Slowly rotate the dial clockwise. The resistance should increase steadily to 1OOK ohms. if the resistance drops off during the test replace the potentiometer. (A dead spot in the potentiometer may cause erratic gun firing.)

6. Repeat this test with each potentiometer.

To check the transformer primary:

1. Turn on the power to the Time Interval Control ,,

2. A voltage reading within the operating line voltage limits should be obtained between terminal #l on TB-1 and the ground stud (at the top of the cabinet).

Be careful. Electrical shock can be deadly. Do not come in contact with the electrically hot terminal board.

To check the transformer secondary:

1. Turn on the power to the Time Interval Control ,

2. Push the timer toggle switch to ON.

3. Check the voltage across pins two red wire I eads) .

#3 and #5 in the six-pin circuit board plug (these are the A reading between 20 and 30 VAC should be obtained. If not, re-

place the transformer.

Electrical shock can kill. Do not come in contact with the input power leads on TB-1 (terminals #l, #2, and #3).

LITHO U.S A

ISSUED 12/76 SUPERSEDES

0 NOrdSott CORPORATION /Amherst, Ohio 44001 TECHNICAL PUB1 ICATION 5 7- 15 - 9

TROUBLE SHOOTING, (Continued)

To check the solenoid circuit voltage:

1. Turn on the CT-8. P lug in the circuit board at Jl .

2. Check the voltage across terminal #9 on TB-1 and the ground stud (at the top of the cab- inet). A reading between 24 and 28 VDC should be obtained. If not, replace the transistor or circuit board.

To check the gun solenoid for proper resistance:

1. Shut off power to the CT-8.

2. Remove the solenoid lead wires from terminals #9, #lo, #ll and #12 on TB-1.

3. Check for proper resistance across each solenoid coil. If the reading does not meet this specificiation, replace the solenoid.

NOTE: If the circuit board fuse blows, check the solenoids for proper resistance.

To check the photosensor/light source:

1.

2.

3.

4.

Turn on power to the Time Interval Control.

Check the voltage across terminals #7 and #8 on TB-1. A reading of 6.3 VAC should be obtained. If not, replace the transformer.

NOTE: In the case of a photocel I trigger device, care should be taken to insure the photocell and light source are in line. If the are not proper1 in line the system wi II not function. Check to see that t tI e light beam is i eing pro- jetted in the direction the light source is aimed.

Check the photosensor e lectrica I connections ,, The black lead and the ground shield must be connected to terminal #4. The red lead is connected to terminal #5 (breaklight

mode).

Confirm the phototransistor receiver alignment. With the timer power ON, test for minimum voltage (less than .5 volt) across the red and black leads. See 57-o-10 for complete instructions.

LITHO U.S.A.

ISSUED 7177 SUPERSEDES 12/76 COPYRIGHT @ 1977 NORDSON

5 7- I 5 - 1 O 0 Nordson CORPORA TION / Amherst, Ohio 440~ TECHNICAL PUB1 /CATION

PUMP INTERVAL OUTPUT

Figure 7 - Electrical Diagram, 115 VAC

Figure 8 - TB2, 100 VAC Figure 9 - TB2, 200 VAC Figure 10 - TB2, 230 VAC

NOTE: Do not convert the Time Interval Control from one voltage to another. Order the appropriate unit for the input voltage available.

ISSUED 12/76 SUPERSEDES LITHO U.S.A.

CORPORATION /Amherst, Ohio 44001 TECHNICAL PUB1 /CATION !i 7- 15 - 11

7

8

‘9

Figure 11 - CT-8 Control Cabinet

Fig. 11

Key Part No. Description Req’d.

295 050 Timer, CT-8, 100 VAC Ref. 295 051 Timer, CT-8, 115 VAC Ref. 295 052 Timer, CT-8, 200 VAC Ref.

i 295 937 053 188 Timer, CT-8, 230 VAC Ref. . Switch, Toggle 1

2 939 033 . Lamp, Indicator (Unit On) 1 3 939 016 . 4 295 059

Fuse, 1 Amp, Slow Blow 1

0 4 5 939 100

Potentiometer w/Jiumper, Locking

. 6

Lamp, Indicator (Output) 2

. Cabinet, CT-8 1 7 1 8 242

Nameplate, CT-8 687

9

I Latch, Cabinet 2 981 247 . x Screw w/Nylok, ‘l/4-28 5/8 2 939 028 . Nut, Dress 1

LITHO U.S.A.

ISSUED 12/76

57-15-12 CORPORATION /Amherst. Ohio 44001 TECHNICAL PLIBLICATION

1: I \ 8 12,13

Figure 12 - CT-8 Control Cabinet (Inside)

Fig. 12

Key Part No. Description Req’d

295 050 Timer, CT-8, 100 VAC Ref. 295 051 Timer, CT-8, 115 VAC Ref. 295 052 Timer, CT-8, 200 VAC Ref. 295 053 Timer, CT-8, 230 VAC Ref.

1 933 161 . Post, Fuse 1 2 295 059 . Potentiometer w/Jumper 4

3 295 057 . Tag, Wiring Instruction 1 4 939 033 . Lamp, Indicator (Unit On) 1 5 939 100 . Lamp, Indicator (Output) 2

6 984 129 . Nut, Hex, Brass, lo-32 1 7 983 120 , Lockwasher, Split, #lo 3

295 054 . Panel w/Hardware 1 8 . . Panel, Enclosure 1

981 039 . . Screw, Pan Hd., 6-32 x 5/l 6 4 9 981 024 . . Screw, Pan Hd., 6-32 x 3/l 6 4

983 102 . . Lockwasher, #6 4 10 933 100 . . Strip, Marker, 12 Station 1

11 295 058 l . Tag, Wiring 1

LITHO U S A.

0 Nordson CORPORATION /Amherst, Ohio 44001 TECHNICAl PUBLICATION 5 7- 15 - 13

PARTS LIST, (Continued)

Fig. 12

Key Part No. Description Req’d.

244 493 . . Spacer, Stand-Off 4 12 981 105 ., o Screw, Pan Hd., lo-24 x 3/8 3 13 983 120 . c Lockwasher, #lO 3 14 295 014 e . Transformer w/Harness 1 15 . 0 Harness, Wire 1 16 939 224 Capacitor, Filter 1

295 022 I I Clip, Component 2 17 771 038 Guide, Card 2 18 270 658 I iircuit Board CT-8 19 939 119 . Fuse, 2-112 Amp, 250 VAC

1

: iransistor w/Heat Sink 1

SO 939-230 1 Transistor, RCA or Motorola #2N3055 1

21 981 055 Screw Pan Hd 8-32 x l/4 2 22 983 110 I Lockwbsher, #8’1 2 23 242 654 . Gasket, Cabi net 3.5 Ft.

RECOMMENDED SPARE PARTS LIST

Fig/Key Part No. Description Qty.

1 l/2 939 033 Lamp, Indicator (Unit On) 1 11/5 939 100 1 1 l/3

Lamp, Indicator (Output) 939 016 Fuse, 1 Amp, Slow Blow 2

12/2 295 059 Potentiometer 1 12/18 270 658 Circuit Board, CT-8 1 12/19 939 119 2 12/20

Fuse, 2-l/2 Amps, 250 VAC 939 230 Transistor, RCA or Motorola #2N3055 1 937 121 Lamp, Photocell Lig,ht Source, GE #12 2 937 190 Phototransistor 1

SUPPLEMENTAL PARTS LIST

The CT-8 Timer is designed to be triggered by a photocell/light source.

Part No. Description Req’d.

937 119 Light Source, Photocell I 1 937 121 . Lamp, G. E. #12 1

937 191 Receiver, Phototransistor 1 937 190 . Phototransistor 1

LlTtlO U.S.A.

ISSUED U/81 SUPERSEDES 7/77 L.OPYRIG HT @ 1977 NORDSON