780S Series Spray Valves VALVEMATE 7040 Controller ... reservoir pressure and needle stroke. Area of coverage is determined by the nozzle size and the dis- tance between the 780S nozzle

US: 888-333-0311UK: 0800 585733 Mexico: 001-800-556-3484

780S Series Spray ValvesVALVEMATE™ 7040 ControllerOperating Manual

®

A NORDSON COMPANY

If you require any assistance or have spe-cific questions, please contact us.

US: 888-333-0311Telephone: 401-434-1680Fax: 401-431-0237E-mail: [email protected]

Mexico: 001-800-556-3484UK: 0800 585733

EFD Inc.977 Waterman Avenue, East Providence, RI 02914-1342 USA

Sales and service of EFD Dispense Valve Systems is availablethrough EFD authorized distributors in over 30 countries.Please contact EFD U.S.A. for specific names and addresses.

ContentsIntroduction ..................................................................2

Specifications ..............................................................3

How The Valve and Controller Operate ......................4

Controller Operating Features ....................................5

Typical Setup ..............................................................6

Setup ........................................................................7-8

Adjusting the Spray......................................................9

Programming Nozzle Air Delay ..................................10

Spray Patterns ..........................................................11

Troubleshooting Guide ........................................12-13

Valve Maintenance................................................14-16

780S Exploded View..................................................17

Input / Output Connections..................................18-19

Connecting More than One 7040 Controller..............20

7040 Schematic and Replacement Parts ..................21

Warranty ....................................................................22

Meets CSA and CE standards.

780/7040-MAN ©2003 EFD Inc.This manual is for the express and sole use of EFD valve purchasers and users,and no portion of this manual may be reproduced in any form.

EFD and VALVEMATE are trademarks of EFD Inc.Teflon is a registered trademark of DuPont.

2 / Introduction

IntroductionThe 780S Series precision Low Volume Low Pressure(LVLP) liquid spray valves are manufactured to the

highest quality standards. The VALVEMATE™ 7040controller features an adjustable nozzle air flowregulator and a microprocessor-based timed air pres-sure output for controlling the ON time of the 780Svalve.

This equipment is produced to very close tolerances toensure proper and reliable operation. Each valve andcontroller has been thoroughly tested prior to shipping.

The 780S and VALVEMATE™ 7040 are simple to useand will operate many millions of cycles without main-tenance. Spray valve cleaning is accomplished bypurging with the appropriate solvent.

To obtain the maximum performance from this fineequipment, please read through these instructionscarefully.

Note: All stainless steel valve parts are passivated.Specifications and technical details are subject toengineering changes without prior notification.

VALVEMATE™ 7040 Controller

Cabinet size: W 7.5" x D 5.6" x H 2.7"(W 19 x D 14 x H 7 cm)

Net weight: 3.1 lb (1.4 kg)

Air input required: 70 psi (4.8 bar) minimum

Input voltage: 100/120/220 VAC selectable

Power required: 50/60 Hz 14/12VA

Foot pedal voltage: 5 VDC

Time range: .001 to 99.9 seconds

Timing control: Microprocessor-based CMOS logicTime cycle repeat 0.00005 seconds

Time reset: Less than 20 milliseconds

Initiation: Dry contact closure or 5 to 24 VDC signal

Output pressure:

Actuating air 70 psi (4.8 bar)Nozzle air 1 to 30 psi (0.07 to 2.07 bar)

Cycle rate: Exceeds 600 per minute

Cycle end feedback circuit: N.C. solid-state switch5 to 24 VDC, 250 mA maximum load

Specifications780S Spray ValveSize: 4.120" x 1.060" dia. (104.6 x 26.9 mm)

Weight: 780S: 8.3 oz (235 g)780S-SS: 14.3 oz (405 g)

Air cylinder body: 780S-SS: Type 303 stainless steel780S: Hard-coated aluminum

Fluid chamber: 780S-SS: Type 303 stainless steel 780S: Hard-coated aluminum

Piston: Type 303 stainless steel

Piston return spring: Type 303 stainless steel

Needle and Nozzle: Type 303 stainless steel

Air cap: 780S-SS: Type 303 stainless steel 780S: Plated brass

Needle packings: Teflon®

Packing spring: Stainless steel

Liquid inlet hole: 1/8 NPT female

Mounting: 1/4-28 UNF tapped hole

Operating frequency: Exceeds 400 per minute

Air pressure required: 70 psi (4.8 bar)

Minimum mounting center distance: 1.067" (27.1 mm)

Standard nozzle diameter: 0.046" (1.17 mm)

Optional nozzle sizes: 0.028" (0.71 mm)0.014" (0.36 mm)

Spray patterns: Round (standard)Fan (optional)

3 / Specifications

How The Valve and Controller Operate

open position

The 780S is a normally closed, air actuated needletype spray valve that uses a Low Volume LowPressure (LVLP) design for high transfer efficiencywithout overspray or airborne mist.

Air pressure from the VALVEMATE™ 7040 controller at70 psi (4.8 bar) acts on a piston ➀ that retracts the nee-dle ➁ from its nozzle seat ➂ and allows liquid to flowfrom the nozzle ➃. At the same time, nozzle air, alsofrom the 7040, is turned on and flows from an annulus➄ around the liquid nozzle.

This adjustable nozzle air creates a pressure droparound the nozzle, causing the liquid to atomize intofine droplets.

When the timed actuating air from the 7040 shuts off,the piston spring moves the needle onto the nozzleseat, shutting off liquid flow. A preset nozzle air delayensures that no liquid remains on the nozzle after thevalve closes, eliminating after-deposit spatter.

The amount sprayed is controlled by the valve opentime, reservoir pressure and needle stroke. Area ofcoverage is determined by the nozzle size and the dis-tance between the 780S nozzle and the work surface.

closed position

4 / How The Valve and Controller Operate

Piston and needle➀

Nozzle seat➂

Needle➁

Annulus➄

Nozzle➃

Piston and needle assemblyFluidNozzle airOperating air

1. CyclePress to initiate one complete dispensecycle. Press this button again to interrupt atimed cycle. Press and hold while in the timeoverride mode for continuous cycle. Releaseto stop.

2. Time overridePress to override time control. Display willshow (---). While in this mode, dispensing ismanual using the cycle button, voltage initi-ate source or foot pedal (optional, #2015A).

3. DecimalPress to move decimal and change timerange maximums from .999 to 9.99 or 99.9.Decimal does not appear in the display whilein the .999 second range.

4. ProgramPress to clear display to zeros. Displayflashes bright/dim while in program mode.Press cycle button and hold until properamount is sprayed. Total spray time will bedisplayed. Press program button again tolock in spray time.

5. Time setPress to change time setting up or down.Press and release to advance one digit at atime, or press and hold to scroll quickly.

6. Foot pedal connectorIf using the optional foot pedal, press thepedal momentarily to initiate the 7040 con-troller. To interrupt a timed dispense cycle,press the pedal again.

Controller Operating Features

5 / Controller Operating Features

Nozzleair regulator

Nozzleair gauge 1 2 3

5

Powerswitch 6

Air input quick-coupler70 psi (4.8 bar)minimum input pressure

Valveoperatingair output (white)

Nozzleair output(black)

Output A

Output B

Airexhaust

9 pin D connectorI/O interface

(see page 18 for details)

Input powercord receptacle

(see page 7for details)

120

4

VALVEMATE7040

Caution: Always depressurize the reservoir beforeopening. To do this, slide the shutoff valve on theair line away from the reservoir. If using an EFDtank, open the pressure relief valve as well. Beforeopening the reservoir, check the pressure gauge toverify that pressure is zero (0).

On all EFD cartridge reservoirs, the unique thread-ed design provides fail-safe air pressure releaseduring cap removal.

Typical Setup

6 / Typical Setup

5 micron filter regulator

Fluid feed hose

#7543BP (installed)for 1/4" OD tube

Pressurized reservoirwith air regulator

ValveMate™7040 Controller

Plant air70 psi (4.8 bar)minimum

MaterialConstant airPulsed air for valve operationPulsed nozzle air

VALVEMATE7040

2005

Control air line

Air tee

White quick connect

Flexible air line

Fluid inlet fitting

Pressure relief valve

Black quick-connect

Shutoff valve

To pressurizeTo exhaust

#7610BP (included)for 3/8" OD tube

Voltage value

Spare fuse

Cartridge window(check voltage indicated)

supply.

4. Install the air tee with barb fitting(#1116) in the output of the filter regulatorand, using the screw clamp provided, installthe black hose with coupling to the barb fit-ting. The quick-connect on the air tee isused to provide air pressure to the air pres-sure regulator on EFD fluid reservoirs. Thisconnection will be made in step 10.5. Remove the cap plug from the air input

of the VALVEMATE™ 7040 and attach theinput air hose coupling onto the controllerair input fitting. Adjust the filter regulator to70 psi (4.8 bar). 6. Mount the 780S valve with an EFD

Universal Valve Mount (#7002VM) or otherappropriate fixture.7. Connect the fluid feed hose to the

reservoir outlet and the 780S inlet portusing appropriate fittings shown on theSetup Schematic, page 6.8. The 780S is equipped with nozzle and

control air hoses with male quick-connects

that plug into the VALVEMATE™ 7040. Plugthe control air hose labeled “A” into output“A” (white) on the rear panel of the 7040and the nozzle air hose labeled “B” intooutput “B” (black), also located on the 7040rear panel.9. Check that all connections are tight and

attached to the proper output. 10. Fill the fluid reservoir. After filling,

secure the cover and connect the reser-voir air pressure regulator to the air teeby using the connecting hose (#2310S).First, attach the black male quick-con-nect on the connecting hose to thereservoir regulator and then attach theother end with the white male quick-connect to the air tee.

SetupInput Power

1. View cartridge window in power cordreceptacle to ensure that fuse voltagevalue matches your input voltage.

If it does not match, remove the fuse car-tridge. Then remove the fuse holderfrom the cartridge, rotate the holder andposition the correct voltage to showthrough the cartridge window. Replacethe cartridge into the power cord recep-tacle and ensure that both sides snapsecurely into position.

Connect the power cord.

Initiate Connection

2. The 7040 is normally operated by apply-ing a 5 to 24 VDC pulse to terminal pins1 and 2, or providing contact closureacross pins 5 and 7. Alternatively, a footpedal may be ordered (#2015A) andplugged into the connector located onthe rear panel. Detailed electricalschematic and diagrams are shown onpages 18 and 19.

3. Connect the VALVEMATE™ 7040 to plantair by first installing the EFD five-micronfilter regulator (#2000F755) to your air

7 / Setup

220

120

100

NEXT

Tamper Resist Option

Note: The area of spray coverage is determined bythe distance between the spray valve nozzle andthe work surface. Refer to the chart on page 11 todetermine this distance.

11. Set the reservoir pressure regulatoraccording to the fluid viscosity. Forexample, low viscosity fluids require only1 to 3 psi (0.07 to 0.2 bar). Higher pres-sures are required for more viscous flu-ids.

12. Close needle stroke control knob, fully(clockwise), then set at one turn open.This is a starting point only. Final settingwill be determined by the desiredflow rate.

13. Check the nozzle air gauge. If not atzero, turn the regulator knob clockwiseto turn off the nozzle air.

Note: Regulator knobs on EFD tanks and conrollershave a push-to-lock, pull-to-unlock feature.

14. Place a container under the valveto collect the fluid during this setupprocedure.

15. Turn on the power switch. Press thetime override button to place the 7040into the manual mode (---).

16. Press and hold the cycle button oroptional foot pedal. Continue to holduntil the fluid lines and the valve areprimed and purged of all air.

The 780S valve can be ordered in a tamp-er resist configuration to limit unauthorizedadjustment.

In the TR configuration, stroke adjustmentcan only be made when a special strokecontrol knob is inserted into the strokemechanism.

A tamper resist stroke kit can also beordered as a retrofit for existing valves.

Part # Description

780S-TR Tamper resist spray valve.0467544SS Tamper resist stroke kit

Stroke Control Reference

8 / Setup

The Stroke Control Reference allows youto calibrate the stroke control setting ordocument the dispensing process.

To calibrate, close the stroke control knoball the way. Loosen the set screw and turnthe reference ring so the zero on the ringaligns with one of the two reference markson the valve body. When the set screw istightened, the valve is calibrated.

Existing 780S Series valves are easilyupgraded with the Stroke ControlReference Kit (#780SR-KIT).

Set Screw

Reference MarkStroke

Reference Ring

Stroke ControlKnob

Removable stroke controlknob

Strokemechanism

9 / Adjusting the Spray

Adjusting the SprayCheck to be sure steps 11 through 16 under Setup havebeen completed, then proceed to adjust the spray.

1. Using the needle stroke control knob ➀ on the780S valve, set the fluid flow rate to one or twodrops per second. Check flow rate by actuatingthe controller in the time override mode. Makevalve stroke adjustments when the controller is off.

2. Set the nozzle air pressure on the VALVEMATE™

7040 controller to 10 psi and actuate the controller.The valve will produce a fine spray.

To change fluid flow, use the needle stroke controlknob ➀.

To change nozzle air, use the nozzle air pressureregulator ➁. Higher pressures will provide finer spray.

To Make Timed Deposits

Return to the time control by pressing the time overridebutton ➂. The display should show the time setting.Adjust the deposit time to 0.5 seconds by using thetime set ➃ and decimal ➄ buttons. (See page 5 foroperation of these buttons.)

Press the cycle button ➅. The 7040 will open the valvefor 0.5 seconds. Adjust time up or down and testdeposits until desired output is obtained.

Optimal results will be obtained with the proper combi-nation of time setting, needle stroke control knob, andreservoir and nozzle air pressure.

➀

VALVEMATE7040

➁

➂

➃

➄➅

10 / Programming Nozzle Air Delay

Programming Nozzle Air DelayThe nozzle air time delay can be changed from thefactory setting of 0.24 seconds to fine-tune the shutoffcharacteristics of the 780S spray valve.

When making small deposits of low viscosity fluid, itmay be necessary to shorten the time delay to eliminatea hollow center in the deposit.

To change the time delay:

1. Turn the power switch off.

2. Press and hold the time override button while turningpower switch on.

3. The display will read "SEL" (select). Release the timeoverride button.

4. Press either the up or down time set buttons onceand release. The current nozzle air delay setting willbe displayed. (The delay is preset to 0.24 secondsfor all new controllers.)

5. Press the up or down time set button again toprogram the new nozzle air delay. (Available rangeis 0.00 to 2.50 seconds.)

6. To exit the nozzle air delay program mode, momen-tarily press the time override button. The spray timesetting will be displayed.

Note: The VALVEMATE™ 7040 controller will not operate whilein the nozzle air delay program mode.

Spray Patterns

Nozzle Distance from the Work Surface:

Nozzle Distance from the Work Surface:

Fan Pattern Spray Area Coverage

Round Pattern Spray Area Coverage

11 / Spray Patterns

1" 2" 3" 6"

Nozzles 25.40 mm 50.80 mm 76.20 mm 152.40 mm

#7857-46SSStandard0.046" 0.250" 0.500" 0.750" 1.500"(1.17 mm) 6.35 mm 12.70 mm 19.05 mm 38.10 mm

#7857-46WA-SSWide-angle0.046" 0.750" 1.500" 2.000" Not(1.17 mm) 19.05 mm 38.10 mm 50.80 mm Recommended

#7857-28SS0.028" 0.200" 0.400" 0.600" 1.200"(0.71 mm) 5.08 mm 10.16 mm 15.24 mm 30.48 mm

#7857-14SS0.014" 0.170" 0.340" 0.500" 1.000"(0.36 mm) 4.32 mm 8.64 mm 12.70 mm 25.40 mm

1" 2" 3" 6"Nozzles 25.40 mm 50.80 mm 76.20 mm 152.40 mm

#7857F-46SS0.046" 1.000" 1.500" 2.000" 3.250"(1.17 mm) 25.40 mm 38.10 mm 50.80 mm 82.60 mm

#7857F-28SS0.028" 0.400" 0.800" 1.200" 2.400"

(0.71 mm) 10.16 mm 20.32 mm 30.48 mm 60.96 mm

#7857F-14SS0.014" 0.340" 0.680" 1.000" 2.000"(0.36 mm) 8.64 mm 17.27 mm 25.40 mm 50.80 mm

#7857-46WF-SS0.046" 1.500" 2.500" 3.250" 6.500"(1.17 mm) 38.10 mm 63.50 mm 82.60 mm 165.10 mm

Round Fan

Side view offan air cap

Fluid flows from the nozzlebut will not spray.

Fluid continuously drips from the nozzle after the valve shuts off.

Valve does not provide clean shutoff,leaving a buildup on the nozzle.

No fluid flow.

12 / Troubleshooting Guide

Troubleshooting GuideValve Trouble Possible cause and correction

If valve operating pressure is too low, the valve will not open. Increase air pressure to 70 psi (4.8 bar) minimum.

The reservoir air pressure may not be high enough. Increase pressure.

The nozzle may be clogged. Clean the nozzle.

The stroke adjustment control may be closed. If it is closed, open counterclockwise one turn.

The control and the nozzle air lines may be reversed. Check for proper connection (see Setup Schematic on page 6).

Nozzle air pressure may be too low. Increase air pressure.

Nozzle air time delay is too short. Increase time.

A continuous drip can be caused by improper seating ofthe needle in the nozzle seat. Remove the nozzle, cleanthe needle and nozzle, replace worn or damaged parts.

If the liquid chamber has not been fully turned onto theair cylinder body during reassembly, the needle will notseat in the nozzle. Check to be sure the liquid chamberis properly installed (see Maintenance Instructions on pages 14-16).

Needle packings may be binding due to leakage, pre-venting the needle from fully closing. Disassemble thevalve in accordance with the Maintenance Instructions.Replace the packings if there is evidence of leakage.

Nozzle air pressure may be too low. Increase air pres- sure.

The air passageway between the nozzle and air cap may be obstructed. Remove the air cap, and clean theair cap and nozzle.If the fluid viscosity is too high, it will not atomize.Reduce viscosity.

NEXT

Be sure that there is power at the wall receptacle. Checkthe input power fuse. If the fuse has blown, check the voltage value in the fuse cartridge window. Be sure thatit matches the input voltage.

Ensure that the external voltage to the circuit is between5 and 24 VDC and that the load does not exceed 250 mA.

If the circuit has been overloaded, the fuse may have blown. See internal diagram on page 21 and replace ifnecessary.

Response delay in pneumatic circuit does not allow thevalve to open when time is at or below 0.015 seconds.Increase time.

1. Valve operating pressure lower than 60 psi (4.1 bar)can cause inconsistent output. Check to be sure pressure is set at 70 psi (4.8 bar).

2. Check VALVEMATE™ 7040 and reservoir air pres-sure readings to be sure air pressure is not varying.

3. Air bubbles in the material can cause inconsistency.For best results, remove all air bubbles.

Timer seems inoperative. Check to be sure time override mode is off.

If trouble cannot be corrected, or if you need further assistance, please call us. In the U.S., 888-333-0311. In the U.K., phone 0800 585733. In Mexico, 001-800-556-3484.

Inconsistent deposits.

Valve does not spraybelow .015 second time setting.

End-of-Cycle Feedback Circuitis not functioning.

No power.

13 / Troubleshooting Guide

VALVEMATE™ 7040 Trouble Possible cause and correction

Note: The EFD timer is very reliable. Any failure will be total,so that no inconsistency is possible. Most questions regardingthe timer are resolved by simply turning the time overridemode off.

Maintenance Tools

6" adjustable wrench

snap ring pliers

packing extraction tool #7803

Caution: Always release the reser-voir pressure and disconnect thepower before performing any mainte-nance on the system. On all EFDtanks, there is a pressure relief valvethat should be activated before open-ing the tank to ensure that all pres-sure is bled off.

Valve MaintenanceNormal cleaning is accomplished by purging withappropriate solvent. The air cap and nozzle can beremoved, soaked in solvent and reinstalled withoutdemounting the valve. (Refer to Exploded View on page17.)

To thoroughly clean valve chamber and replace needlepackings:

1. Remove the needle stroke control knob and springto prevent damage to the needle and nozzle duringreassembly.

2. Remove the air cap retainer, then the air cap, nozzleand fittings from the liquid chamber.

3. Remove the fluid chamber from the air cylinderbody by turning counterclockwise until free. Thenremove the O-ring from the fluid chamber.

4. Clean the fluid chamber, air cap and nozzle inappropriate solvent.

5. Remove the needle packings from the fluid cham-ber, using tool #7803 supplied with the valve. Insertthrough nozzle end of the fluid chamber and gentlypush out the packings (see Figure 1).

Do not use sharp instruments to scrape or cleanthese components. Scratches may cause the valveto leak.

6. Remove any remaining packings and the spring

14 / Valve Maintenance

Figure 1Pushing needle packingsfrom the fluid chamber.

Packingextractiontool#7803

Fluidchamber

O-ring

Teflonneedlepackings

Teflonpackingseat

Metalpackingexpander

NEXT

Note: The small O-ring on the bottom of the air cylinder bodyis held in place by a flat retaining washer that also serves asthe packing spring seat. It may come out with the spring.Ensure that it is back in place before reinstalling the packingspring (see Figure 2).

15 / Valve Maintenance

Figure 2Proper assembly order for reinstalling needle packings.

from the needle.

7. Clean the needle with a cloth dampened in solvent.

8. Lubricate the needle with Nye Lubricant #865 gel andreinstall the needle packing spring and packings inaccordance with Figure 2 below.

9. Install a new O-ring (#7517) on the fluid chamber.Screw the air cylinder onto the fluid chamber. Handtighten only. The chamber can be backed off 1/2 turnfrom the air cylinder body to orient fittings.

10. Reinstall the nozzle, air cap, retainer and fittings.Reinstall the needle stroke control and spring. Turnback to the desired setting.

Metalpackingexpander

Air cylinder body Retaining

washerTeflonpackingseat

O-ring

SpringTeflonneedlepackings

NEXT

16 / Valve Maintenance

Note: The piston and needle assembly is replacedas a unit and cannot be disassembled.

To reseat the needle and nozzle assembly:

1. Disconnect or shut off all air to the valve.

2. Rotate the stroke adjustment knob tothe closed position by turning clockwise.

3. Rotate the stroke adjustment further clockwise one additional reference markto compress the needle into the nozzle.

4. Return the adjustment knob to normalsetting and cycle the valve a few times. If there is still a slight leak, repeat steps 1 and 2 again.

5. If the leak continues, replace the nozzle.

To replace the piston and needle assembly orthe piston O-ring:

1. Remove the needle stroke control knobby turning counterclockwise until free.

2. Remove the piston return spring andthrust washers located on each end ofthe spring.

3. Remove the snap ring using snap ringpliers.

4. Pull the piston and needle assembly outof the air cylinder using small pliers onthe spring pilot (at the top of the piston).

Note: The piston and needle assembly is replacedas a unit and cannot be disassembled.

5. Clean the air cylinder body wall andapply lubricant.

6. Reinstall a new O-ring on the piston,apply lubricant to the needle and O-ringthen reinstall in the air cylinder.

7. Reinstall the snap ring.

8. To reinstall the piston return spring, firstput one thrust washer over the springpilot, then the other thrust washer intothe needle stroke control, followed bythe spring.

9. Reinstall the needle stroke control knobby aligning the piston return spring withthe spring pilot. Turn the needle strokecontrol clockwise until it stops and thenback it out to the desired setting.

Nozzle and Air Cap AssemblyRound pattern Fan pattern Wide fan pattern Round wide-angle

Nozzle Size Stainless Steel Stainless Steel Stainless Steel Stainless Steel

0.046" (1.17 mm) #7857-46SS #7857F-46SS #7857-46WF-SS #7857-46WA-SS

0.028" (0.71 mm) #7857-28SS #7857F-28SS N/A N/A

0.014" (0.36 mm) #7857-14SS #7857F-14SS N/A N/A

17 / 780S Exploded View

AB

Fluid chamber#7812-SS (stainless steel)

#7812 (hard-coated aluminum)

Needle stroke reference control#780SSR-KIT (stainless steel)#780SR-KIT (aluminum)

Piston return spring #7802

Snap ring #7526

O-ring (Buna-N)#7519

Air cylinder body#7811-SS (stainless steel)#7811 (hard-coated aluminum)

O-ring#7806

Thrust washer#7809

Needle packing assembly #7810

Nozzle air cap retainer#7819SS (stainless steel)

Nozzle/air cap(see below)

Nye gel lubricant, 1 gramfoil packet (not shown)

Retaining washer#7807

O-ring7517

Packing spring#7808

Fluid inlet fitting#7543BP - for 1/4" OD tube#7610BP - for 3/8" OD tube

Air hose assembly#7830

Piston and needleassembly includesO-ring (Buna N)#7805-SS

Nozzle O-ring (Viton)#7825

780S SeriesItems included in repair kit#780S-RK are listed in blue.

Note: 9-pin male connector assemblyis included (replacement part # 7154).

]]

5-24 VDC250 mA Max

5-24 VDC

Pin Function1. Initiate +2. Initiate -3. Output +4. Output -5. Contact Closure6. Chassis Ground7. Contact Closure8. Not Used9. Not Used

I/O ConnectionThe 9-pin D connectorand internal circuitry pro-vide external initiate andend-of-cycle feedback sig-nal. The pin connectionsare shown below.

18 / Input / OutputConnections

Input/Output Connections 1. Voltage Initiate Circuit

The VALVEMATE™ 7040 may be initiated with a 5 to 24VDC signal across pins 1 and 2. The signal can bemomentary (no less than 0.02 seconds) or maintained.A new cycle will begin once power is removed and thenapplied again. Refer to the schematic on page 19 forproper installation.

2. End-of-Cycle Feedback Circuit

Upon completion of a dispense cycle, an open collectorcircuit closes and remains closed until the next dispensecycle. This circuit can be utilized to signal back to ahost computer, start another device in sequence orother operations that need to be tied into completion ofthe dispense cycle.

Upon closure, power from an external 5 to 24 VDCsource is allowed to pass through the circuit to operatea load. The load illustrated is a relay, but this could beany device that will operate within the 5 to 24 volt range.Power consumption of the load must not exceed 250mA.

3. Mechanical Contact Initiate

The VALVEMATE™ can be initiated via the closure ofmechanical contacts such as a relay or switch using pins5 and 7. Closure of the contacts can be momentary (noless than 0.02 seconds) or maintained. A new cycle willbegin once the contacts are opened and then closedagain. Refer to the schematic on page 19 for properinstallation.

Note: For applications using morethan one 7040, see page 20 for con-nection instructions.

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19 / Input and Output Connections

Micro-controller

Optocoupler

Fuse

Voltage Initiate Circuit5 to 24 VDC power source power consumption2.2 mA at 5 VDC15.0 mA at 24 VDC

End-of-CycleFeedback Circuit5 to 24 VDC power source maximum load 250 mA

100/120/220 VAC50/60 Hz 14/12 VA

+ 5 VDC

Solenoid 1780Scontrol

Protector

Solenoid 2atomizercontrol

Power supply

Nonvolatilememory

Programmabledisplay

Optocoupler

+ 24 VDC

Mechanical Contact InitiateMechanical contact power consumption contact load = 5.5 VDC / 100 uA

Foot Pedal

+

+

_

_

2

3

4

5

7

1

A relay is illustratedas one example for utilizing the feedback circuit.

NOTE: DO NOT APPLY VOLTAGE across pins5 and 7.

Connecting more than one 7040 Controller

2. Series circuit for End-of-Cycle Feedback feature. A relay is illustrated as one example

for utilizing the feedback circuit.

1. Parallel circuit diagram for Voltage Initiate.

20 / Connecting More Than One 7040 Controller

Follow these instructions and diagrams when theVoltage Initiate or End-of-Cycle Feedback features areused in a multiple 7040 installation.

1. Voltage Initiate Circuit

To start the dispense cycle for multiple 7040's at thesame time, connect the Voltage Initiate Circuit in paral-lel as illustrated.

Note: The amperage consumption for the Voltage Initiate Circuitwill increase with each VALVEMATE™ 7040 that is connected.The initiate power supply should be sized accordingly.

Example: First 7040 consumes 15.0 mA at 24 volts.Second one will consume another 15.0 mA; total now is30.0 mA. Third one will consume another 15.0, makingthe total 45.0 mA and so on.

2. End-of-Cycle Feedback Circuit

This circuit will ensure that the End-of-Cycle signal willcome from the last 7040 to complete a dispense cycle.Connect in series as illustrated.

Note: There will be a maximum voltage drop of 2.0 VDC throughthe Feedback Circuit with each 7040 that is added to the series.The input power should be adjusted for this drop to ensure thatthe required voltage is available to operate the load. Maximuminput voltage to terminals 3 and 4 must not exceed 30.0 VDC.

Example: The device to be controlled through theFeedback Circuit operates at 12 VDC. Four 7040's areto be used. 4 x 2.0 = 8.0 VDC drop. Power supplyshould provide (12.0 + 8.0) or 20.0 VDC to ensure that12.0 VDC is available to run the load.

REMEMBER: Maximum current through the Feedback Circuitmust not exceed 250 mA.

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5-24 VDCSource +-

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Replacement Parts for the 7040 Controller1. 2-2002-7040 Regulator assembly

0 to 30 psi, 0 to 2.07 bar

2. 2-2003-7040A Control solenoid assembly

3. 2-2003-7040B Nozzle air solenoid assembly

4. 2-2006DB-VC Display PCB assembly

5. 2-2006PS-VC Power supply PCB assembly

6. 2-2017-1500 Foot pedal receptacle assembly

7. 2001A Gauge 0 to 30 psi, 0 to 2.07 bar

8. 2004B Female quick-connect - black(hidden from view - below item #9)

9. 2004B-W Female quick-connect - white

10. 2024-160 1/4" OD x .160" ID tubing

11. 2081A Air input quick-connect

12. 2085 1/8 NPT x 1/4 barb - low profile

13. 2086 1/8 NPT x 1/4 barb 90° - brass

14. 2087 1/8 NPT x 1/4 barb elbow - brass

15. 2088 Fitting - 1/8 NPT x 1/4 barb - brass

16. 7108 Exhaust muffler

17. 7109 Power switch

18. 7111 Fuse - .125A

19. 7143-01 Output circuit fuse

21 / 7040 Schematic and Replacement Parts

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7

5

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9 17

18

6

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Regulated Air

Input Air

977 Waterman Avenue, East Providence, Rhode Island 02914-1342 USA Toll free: 888-333-0311 Mexico: 001-800-556-3484Telephone: 401-434-1680 Fax: 401-431-0237 www.efd-inc.come-mail: [email protected]

Unit 14, Apex Business Centre, Boscombe Road, Dunstable, Bedfordshire LU5 4SB UKTelephone: 01582 666334 Fax: 01582 664227 Freephone: 0800 585733Ireland: 00800 8272 9444 e-mail: [email protected]

EFD International Inc. is incorporated with limited liability in the U.S.A.

EFD ONE YEAR LIMITED WARRANTY

All components of EFD spray valves and VALVEMATE™ controllers are warranted for oneyear from date of purchase to be free from defects in material and workmanship (but notagainst damage caused by misuse, abrasion, corrosion, negligence, accident, faulty instal-lation or by dispensing material incompatible with equipment) when the equipment isinstalled and operated in accordance with factory recommendations and instructions. EFDwill repair or replace free of charge any part of the equipment thus found to be defective,on authorized return of the part prepaid to our factory during the warranty period. For thespray valve, the only exceptions are those parts which normally wear and must be replacedroutinely such as, but not limited to, needles, needle packings and nozzles.

In no event shall any liability or obligation of EFD arising from this warranty exceed the pur-chase price of the equipment. This warranty is valid only when oil-free, clean, dry, filteredair is used.

EFD makes no warranty of merchantability or fitness for a particular purpose. In no eventshall EFD be liable for incidental or consequential damages.

©2003 EFD Inc.780/7040-MAN 1.5B803

®

A NORDSON COMPANY

Printed on recycled paper