Nordson MEG® Gun Driver Owner's Manual

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Nordson MEG® Gun Driver Owner's Manual | Manualzz

MEGr Driver

Customer Product Manual

Part 229776B

Issued 10/14

For parts and technical support, call the Industrial Coating

Systems Customer Support Center at (800) 433-9319 or contact your local Nordson representative.

This document is subject to change without notice.

Check http://emanuals.nordson.com for the latest version.

NORDSON CORPORATION • AMHERST, OHIO • USA

Contact Us

Nordson Corporation welcomes requests for information, comments, and inquiries about its products. General information about Nordson can be found on the Internet using the following address: http://www.nordson.com.

Address all correspondence to:

Nordson Corporation

Attn: Customer Service

555 Jackson Street

Amherst, OH 44001

Notice

This is a Nordson Corporation publication which is protected by copyright.

Original copyright date 1999. No part of this document may be photocopied, reproduced, or translated to another language without the prior written consent of Nordson Corporation. The information contained in this publication is subject to change without notice.

Trademarks

MEG, Nordson, and the Nordson logo are registered trademarks of

Nordson Corporation.

All other trademarks are the property of their respective owners.

Part 229776B

E 2001 Nordson Corporation

Table of Contents

i

MEGr Driver

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Qualified Personnel

Intended Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Regulations and Approvals

Personal Safety

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

High-Pressure Fluids

. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Fire Safety

Halogenated Hydrocarbon Solvent Hazards

Action in the Event of a Malfunction

Disposal

. . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6

Features 7

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7

Installation 8

Unpacking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Electrical Connections

Wiring Requirements

AC Input Power

Trigger Signals

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Spray Gun Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8

9

9

9

9

9

Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

11

1

4

5

2

2

5

5

1

1

1

1

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Using the Illustrated Parts List

MEG Driver Parts

Recommended Spare Parts

. . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

14

15

16

E 2002 Nordson Corporation

Manual XX-XX Part 123456X

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Table of Contents

Part 123456X

Manual XX-XX

E 2002 Nordson Corporation

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MEG

r

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Safety

Read and follow these safety instructions. Task- and equipment-specific warnings, cautions, and instructions are included in equipment documentation where appropriate.

Make sure all equipment documentation, including these instructions, is accessible to persons operating or servicing equipment.

Qualified Personnel

Equipment owners are responsible for making sure that Nordson equipment is installed, operated, and serviced by qualified personnel. Qualified personnel are those employees or contractors who are trained to safely perform their assigned tasks. They are familiar with all relevant safety rules and regulations and are physically capable of performing their assigned tasks.

Intended Use

Use of Nordson equipment in ways other than those described in the documentation supplied with the equipment may result in injury to persons or damage to property.

Some examples of unintended use of equipment include

S using incompatible materials

S making unauthorized modifications

S removing or bypassing safety guards or interlocks

S using incompatible or damaged parts

S using unapproved auxiliary equipment

S operating equipment in excess of maximum ratings

Regulations and Approvals

Make sure all equipment is rated and approved for the environment in which it is used. Any approvals obtained for Nordson equipment will be voided if instructions for installation, operation, and service are not followed.

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Personal Safety

To prevent injury follow these instructions.

S

Do not operate or service equipment unless you are qualified.

S

Do not operate equipment unless safety guards, doors, or covers are intact and automatic interlocks are operating properly. Do not bypass or disarm any safety devices.

S

Keep clear of moving equipment. Before adjusting or servicing moving equipment, shut off the power supply and wait until the equipment comes to a complete stop. Lock out power and secure the equipment to prevent unexpected movement.

S

Relieve (bleed off) hydraulic and pneumatic pressure before adjusting or servicing pressurized systems or components. Disconnect, lock out, and tag switches before servicing electrical equipment.

S

While operating manual spray guns, make sure you are grounded.

Wear electrically conductive gloves or a grounding strap connected to the gun handle or other true earth ground. Do not wear or carry metallic objects such as jewelry or tools.

S

If you receive even a slight electrical shock, shut down all electrical or electrostatic equipment immediately. Do not restart the equipment until the problem has been identified and corrected.

S

Obtain and read Material Safety Data Sheets (MSDS) for all materials used. Follow the manufacturer’s instructions for safe handling and use of materials, and use recommended personal protection devices.

S

Make sure the spray area is adequately ventilated.

S

To prevent injury, be aware of less-obvious dangers in the workplace that often cannot be completely eliminated, such as hot surfaces, sharp edges, energized electrical circuits, and moving parts that cannot be enclosed or otherwise guarded for practical reasons.

High-Pressure Fluids

High-pressure fluids, unless they are safely contained, are extremely hazardous. Always relieve fluid pressure before adjusting or servicing high pressure equipment. A jet of high-pressure fluid can cut like a knife and cause serious bodily injury, amputation, or death. Fluids penetrating the skin can also cause toxic poisoning.

If you suffer a fluid injection injury, seek medical care immediately. If possible, provide a copy of the MSDS for the injected fluid to the health care provider.

Part 229776B

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The National Spray Equipment Manufacturers Association has created a wallet card that you should carry when you are operating high-pressure spray equipment. These cards are supplied with your equipment. The following is the text of this card:

WARNING: Any injury caused by high pressure liquid can be serious. If you are injured or even suspect an injury:

S

Go to an emergency room immediately.

S

Tell the doctor that you suspect an injection injury.

S

Show him this card

S

Tell him what kind of material you were spraying

MEDICAL ALERT—AIRLESS SPRAY WOUNDS: NOTE TO PHYSICIAN

Injection in the skin is a serious traumatic injury. It is important to treat the injury surgically as soon as possible. Do not delay treatment to research toxicity. Toxicity is a concern with some exotic coatings injected directly into the bloodstream.

Consultation with a plastic surgeon or a reconstructive hand surgeon may be advisable.

The seriousness of the wound depends on where the injury is on the body, whether the substance hit something on its way in and deflected causing more damage, and many other variables including skin microflora residing in the paint or gun which are blasted into the wound. If the injected paint contains acrylic latex and titanium dioxide that damage the tissue’s resistance to infection, bacterial growth will flourish. The treatment that doctors recommend for an injection injury to the hand includes immediate decompression of the closed vascular compartments of the hand to release the underlying tissue distended by the injected paint, judicious wound debridement, and immediate antibiotic treatment.

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Fire Safety

To avoid a fire or explosion, follow these instructions.

S

Ground all conductive equipment. Use only grounded air and fluid hoses. Check equipment and workpiece grounding devices regularly.

Resistance to ground must not exceed one megohm.

S

Shut down all equipment immediately if you notice static sparking or arcing. Do not restart the equipment until the cause has been identified and corrected.

S

Do not smoke, weld, grind, or use open flames where flammable materials are being used or stored.

S

Do not heat materials to temperatures above those recommended by the manufacturer. Make sure heat monitoring and limiting devices are working properly.

S

Provide adequate ventilation to prevent dangerous concentrations of volatile particles or vapors. Refer to local codes or your material MSDS for guidance.

S

Do not disconnect live electrical circuits when working with flammable materials. Shut off power at a disconnect switch first to prevent sparking.

S

Know where emergency stop buttons, shutoff valves, and fire extinguishers are located. If a fire starts in a spray booth, immediately shut off the spray system and exhaust fans.

S

Shut off electrostatic power and ground the charging system before adjusting, cleaning, or repairing electrostatic equipment.

S

Clean, maintain, test, and repair equipment according to the instructions in your equipment documentation.

S

Use only replacement parts that are designed for use with original equipment. Contact your Nordson representative for parts information and advice.

Part 229776B

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Halogenated Hydrocarbon Solvent Hazards

Do not use halogenated hydrocarbon solvents in a pressurized system that contains aluminum components. Under pressure, these solvents can react with aluminum and explode, causing injury, death, or property damage.

Halogenated hydrocarbon solvents contain one or more of the following elements:

Element

Fluorine

Chlorine

Bromine

Iodine

Symbol

F

Cl

Br

I

Prefix

“Fluoro-”

“Chloro-”

“Bromo-”

“Iodo-”

Check your material MSDS or contact your material supplier for more information. If you must use halogenated hydrocarbon solvents, contact your Nordson representative for information about compatible Nordson components.

Action in the Event of a Malfunction

If a system or any equipment in a system malfunctions, shut off the system immediately and perform the following steps:

S

Disconnect and lock out system electrical power. Close hydraulic and pneumatic shutoff valves and relieve pressures.

S

Identify the reason for the malfunction and correct it before restarting the system.

Disposal

Dispose of equipment and materials used in operation and servicing according to local codes.

E 2001 Nordson Corporation

Part 229776B

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Driver

Description

See Figure 1.

The Modular Electric Gun (MEG) driver is an electrical controller that interfaces with the MEG spray gun. The driver accepts either a 5 Vdc trigger signal or a 10−40 Vdc trigger signal from a customer-supplied external timer.

The MEG driver uses solid state switches and a power supply to provide regulated peak and holding current to the spray gun coil. The coil produces a magnetic field that pulls the needle off its seat, allowing material to flow.

The driver produces a clean, accurate output signal.

The front panel LEDs indicate the status of the trigger input signal from the timer and the output signal to the spray gun.

Two versions of the driver are available: a single-channel (one gun) model and a dual channel (two gun) model.

Part 229776B

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1

3

4

Figure 1 MEG Driver (Dual-Channel Model Shown)

1. Input LED (green)

2. Output LED (amber)

3. Labeling pad

4. Power switch

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Features

The driver has the following features:

S

Fast response time. The MEG driver regulates current to the spray gun to provide fast on and off times.

S

Universal line operation. Automatically adjusts to line voltages between

100 to 260 Vac.

S

Efficient operation. The MEG driver provides long life to the spray gun by increasing efficiency and reducing heat.

Specifications

Dimensions

Item

Weight

Electrical

Temperature

Cycle Rate

Trigger Inputs

Pull-in Time Duration

Gun Output

Specification

Height: 222 mm (8.75 in.)

Width: 64 mm (2.5 in.)

Depth: 145 mm (5.7 in.)

2 kg (4.5 lb)

100−240 Vac, 50/60 Hz, single phase, 3 amps maximum

Ambient temperature: 2−50 _C (35.6−122 _F)

3000 cycles/min at 50% duty cycle, 100−130 Vac

1500 cycles/min at 50% duty cycle, 131−240 Vac

1200 cycles/min at 50% duty cycle, 240−260 Vac

Trigger High: 15−48 Vdc

Trigger Low: 3−7 Vdc

3 msec maximum

1 or 2 channel, one for each spray gun

Current Driver: 3 amp pull-in, 1 amp holding

Short circuit protected

E 2001 Nordson Corporation

Part 229776B

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Driver

Installation

WARNING: Allow only qualified personnel to perform the following tasks.

Follow the safety instructions in this document and all other related documentation.

Unpacking

Mounting

CAUTION: Care should be taken to avoid damage to the MEG driver during unpacking.

No special instructions are necessary to unpack the MEG driver.

1. There are two MEG driver models—single-channel and dual-channel.

Compare the part number on the nameplate with the driver part numbers in the Parts section to make sure you have the right model.

2. Inspect the driver enclosure for dents and other physical damage.

Contact a Nordson representative if any damage is found.

See Figure 2.

1. Position the MEG driver (1) in a vertical position as shown.

2. Snap the DIN rail clips (2) on the rear panel into the DIN rail (3).

Part 229776B

1

2

3

Figure 2 Typical Mounting

1. MEG driver

2. DIN rail clips

3. DIN rail

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Electrical Connections

See Figure 3.

Wiring Requirements

NOTE: Use 18AWG shielded wire such as Belden #8770 for the driver-to-gun electrical connections. Use 16−18 AWG wire rated for at least

250 volts for the driver power connections. At a minimum, this wire must be suitable for 10 _C (50 _F) above the surrounding ambient temperature.

All driver wiring is connected to an 18-station terminal connector plugged into the receptacle on the backplane.

AC Input Power

1. Connect the power supply line wires to L1 and L2.

2. Connect the ground wire to the power input ground.

Trigger Signals

NOTE: Check for proper polarity when connecting trigger signal wires.

1. Connect the trigger input wires from the timer(s) to the TRIG 1

CHANNEL 1 (and TRIG 2 CHANNEL 2, if used) terminals:

S

For +15−48 Vdc trigger voltages, connect the input wires to + HI and

COM.

S

For 3−7 Vdc trigger voltage, connect the input wires to + L0 and

COM.

Spray Gun Connections

The spray gun coil connections are not polarity sensitive. Connect the MEG driver to the spray gun(s) as shown in the wiring diagram. Refer to your spray gun manual for wiring and fusing requirements.

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Part 229776B

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Figure 3 Electrical Connections

GUN1

GND

SHLD

+HI

+LO

COM

GUN2

GUN2

GND

SHLD

GND

L2

L1

N/C

+HI

+LO

COM

GUN1

Ground

AC Wiring (100−240 Vac)

Timer 1 Input

Gun 1

Timer 2 Input

Gun 2

Part 229776B

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11

Operation

Operation consists of turning on the MEG driver and monitoring the input and output LEDs. The LEDs light when the timer sends a trigger signal to the driver and the driver energizes the gun coil.

Troubleshooting

WARNING: Allow only qualified personnel to perform the following tasks.

Follow the safety instructions in this document and all other related documentation.

These procedures cover only the most common problems that you may encounter. If you cannot solve the problem with the information given here, contact your local Nordson representative for help.

Problem

1. Trigger signal good but green trigger input LED does not illuminate

2. Amber output LED does not illuminate

3. Input trigger LED does not illuminate

Possible Cause

No input power

Fuses blown

Spray gun coil not connected to the driver output terminals

Driver circuit board failure

Timer cable connections loose or cable bad

Timer malfunction

Driver circuit board failure

Corrective Action

Connect power supply to the unit and turn on the power source. Refer to the AC Input Power section in

Installation.

See Figure 3. Check trigger

electrical connections and polarity.

Replace the 1.5 amp, 250 Vac fuses on the circuit board.

Check output connections (Gun1 and

Gun 2). See Figure 3.

Replace driver circuit board assembly.

Check the timer cable connections and cable continuity.

Check timer output signal.

Replace driver circuit board assembly.

E 2001 Nordson Corporation

Part 229776B

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MEG r

Driver

Repair

WARNING: Allow only qualified personnel to perform the following tasks.

Follow the safety instructions in this document and all other related documentation.

WARNING: Disconnect equipment from line voltage before performing the following tasks. Failure to observe this warning may result in personal injury or equipment damage.

Repair consists of replacing the driver circuit board assemblies. Single channel models have one assembly, dual channel models have two.

See Figure 4.

1. Remove the screws (1) and washers (2) securing the enclosure top plate (3).

2. Note the position and orientation of the circuit board assemblies. You must install the new board assemblies in the same position, with the same orientation.

3. Remove the circuit board assemblies (4) from the enclosure (5) by firmly pulling the board away from the back plate pin socket (6).

CAUTION: Use extreme care when installing the driver board to prevent damage to the connector pins.

4. Carefully install the new circuit board assemblies into the enclosure.

Make sure that the connector pins seat into the back plate pin socket.

5. Install the enclosure top plate. Tighten the screws securely.

Part 229776B

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6

5

4

3

2

1

Figure 4 Typical Circuit Board Replacement

1. Screws

2. Washers

3. Enclosure top plate

4. Circuit board assembly

5. Enclosure

6. Pin socket

E 2001 Nordson Corporation

Part 229776B

14

MEG r

Driver

Parts

To order parts, call the Nordson Industrial Coating Systems Customer

Support Center at (800) 433-9319 or contact your local Nordson representative. Use the part illustrations and parts lists to locate and describe the parts you need to order.

Using the Illustrated Parts List

Numbers in the Item column correspond to numbers that identify parts in illustrations following each parts list. The code NS (not shown) indicates that a listed part is not illustrated. A dash (—) is used when the part number applies to all parts in the illustration.

The number in the Part column is the Nordson Corporation part number. A series of dashes in this column (- - - - - -) means the part cannot be ordered separately.

The Description column gives the part name, as well as its dimensions and other characteristics when appropriate. Indentions show the relationships between assemblies, subassemblies, and parts.

Item

1

2

Part

0000000

000000

000000

Assembly

S Subassembly

S S Part

Description Quantity

1

2

1

Note

A

S

If you order the assembly, items 1 and 2 will be included.

S

If you order item 1, item 2 will be included.

S

If you order item 2, you will receive item 2 only.

The number in the Quantity column is the quantity required per unit, assembly, or subassembly. The code AR (As Required) is used if the part number is a bulk item ordered in quantities or if the quantity per assembly depends on the product version or model.

Letters in the Note column refer to notes at the end of each parts list. Notes contain important information about usage and ordering. Special attention should be given to notes.

Part 229776B

E 2001 Nordson Corporation

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15

MEG Driver Parts

See Figure 5.

Item

2

3

1

Part

OBS

OBS

307913

982981

983413

Description

Driver, single MEG assembly

Driver, dual MEG assembly

S Connector, terminal, 18 station

S Screw, pan head, recessed, M3.5 x 50, zinc

S Washer, lock, m, internal, M3.5, zinc-plated stainless steel

4

5

6

7

- - - - - -

227149

- - - - - -

983520

S PCA, config intfc-bkpl PCA’s

S PCA, CBG, MEG driver

S Enclosure, top plate, MEG

S Washer, lock, m, internal, M3, zinc-plated stainless steel

8

9

10

982903

131345

983416

S Screw, pan head, recessed, M3 x 30, zinc

S Clip, DIN rail

S Washer, lock, m, internal, M4, zinc-plated stainless steel

11 982881

S Screw, pan head, recessed, M4 x 6, zinc

NOTE A: Two required for dual-channel MEG driver.

AR: As Required

4

2

2

2

1

AR

1

4

Quantity

1

4

4

1

1

Note

A

2

3

4

1

5

6

7

8

Figure 5 MEG Driver (Dual-Channel Model Shown)

E 2001 Nordson Corporation

Part 229776B

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MEG r

Driver

Recommended Spare Parts

Keep the following parts on hand to reduce downtime.

See Figure 5.

Item

1

5

NS

NS: Not Shown

Part

307913

227149

227348

Description

Connector, terminal, 18 station

PCA, CBG, MEG driver

Fuse, 5 x 20 mm, 250 V, 1.5A, clip

Quantity

1

1

2

Note

Part 229776B

E 2001 Nordson Corporation

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