Honeywell ML6420 Automobile Parts User Manual

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Honeywell ML6420 Automobile Parts User Manual | Manualzz

ML6420, ML7420

Non-Spring Return

Electric Linear Valve Actuators

PRODUCT DATA

APPLICATION

The ML6420 Non-Spring Return Electric Linear Valve

Actuators are floating control actuators used with controllers that provide a switched or floating single-pole double-throw

(spdt) output. These actuators operate standard Honeywell valves in heating, ventilating, and air conditioning (HVAC) applications.

The ML7420 Non-Spring Return Electric Linear Valve

Actuators are modulating control actuators used with controllers that provide an analog output of 0 to 10 Vdc or 2 to

10 Vdc. These actuators operate standard Honeywell valves in HVAC applications. An internal selector plug can be used to reverse the direction of action.

FEATURES

• Quick and easy installation.

• No separate linkage required.

• Conduit connector is standard.

• No adjustments required.

• Low power consumption.

• High close-off ratings.

• Force-limiting end switches.

• Manual operator.

• Synchronous motor.

• Corrosion resistant design.

• Maintenance free.

• Direct/reverse acting with ML7420.

• Position feedback signal included with ML7420.

• Selectable 0 to 10 Vdc or 2 to 10 Vdc signal input with

ML7420.

Contents

Application ........................................................................

1

Installation ........................................................................

3

Ordering Information ........................................................

2

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

7

Checkout ..........................................................................

8

63-2533-03

ML6420, ML7420 NON-SPRING RETURN ELECTRIC LINEAR VALVE ACTUATORS

SPECIFICATIONS

Models:

Model

Run Time in sec at 60 Hz

ML6420A 30 or 60 a

ML7420A

Stroke in in. (mm)

3/4 (20) a

Dependant on actuator model.

Description

Electric Linear

Valve Actuator

Dimensions: See Fig. 1.

Weight: 2.9 lb (1.3 kg).

Electrical Ratings:

Power Input: 24 Vac ±15%, 60 Hz.

Power Consumption:

ML6420: 6 VA maximum at 24 Vac.

ML7420: 7 VA maximum at 24 Vac.

Signal Source Output Resistance: 1K ohm maximum.

Signal Load: 1 mA maximum.

Ambient Ratings:

Temperature:

Ambient: 14°F to 122°F (-10°C to +50°C).

Storage: -40°F to +158°F (-40°C to +70°C).

Maximum Valve Medium: 300°F (150°C).

Humidity: 5 to 95 percent relative humidity, noncondensing.

Stem Force: 135 lbf (600N).

Signal Inputs (Supply Voltage Between Terminals):

ML6420:

B and 24 Vac: Drives valve stem down.

W and 24 Vac: Draws valve stem up.

ML7420: 0 to 10 Vdc or 2 to 10 Vdc.

Actuator Material:

Cover: ABS-FR plastic.

Base: PBTP-FR plastic.

Yoke: Diecast aluminum.

Actuator Stroke: 3/4 in. (20 mm).

Close-off Pressure Ratings: See Table 1.

Protection Standard: IP54.

Approvals:

Canadian Standards Association Listed.

Underwriter’s Laboratories, Inc. UL94-5V Flame Retardant.

Meets CE requirements.

Cable entry: Conduit connector and one knockout on case.

Accessories:

43196000-001 High Temperature Kit (1/2 to 3 in. valves).

Increases temperature range high-end to 428 °F

(220 °C).

For ML6420/ML6425

43191679-111 Single Auxiliary 10K ohm Potentiometer.

43191679-112 Single Auxiliary 220 ohm Potentiometer.

43191680-105 Dual Auxiliary Switch (for 24 Vac use only).

For ML7420/ML7425

43191680-205 Dual Auxiliary Switch (for 24 Vac use only).

ORDERING INFORMATION

When purchasing replacement and modernization products from your TRADELINE® wholesaler or distributor, refer to the

TRADELINE® Catalog or price sheets for complete ordering number.

If you have additional questions, need further information, or would like to comment on our products or services, please write or phone:

1. Your local Honeywell Automation and Control Products Sales Office (check white pages of your phone directory).

2. Honeywell Customer Care

1885 Douglas Drive North

Minneapolis, Minnesota 55422-4386

3. http://customer.honeywell.com or http://customer.honeywell.ca

In Canada—Honeywell Limited/Honeywell Limitée, 35 Dynamic Drive, Toronto, Ontario M1V 4Z9.

International Sales and Service Offices in all principal cities of the world. Manufacturing in Australia, Canada, Finland, France,

Germany, Japan, Mexico, Netherlands, Spain, Taiwan, United Kingdom, U.S.A.

63-2533—03 2

ML6420, ML7420 NON-SPRING RETURN ELECTRIC LINEAR VALVE ACTUATORS

Table 1. Close-off ratings for ML6420, ML7420 Electric Linear Valve Actuators and Honeywell Valves (psi).

Type

Flange V5011A

NPT

V5011N2xxx

V5013F

Valve

V3350/3351/3450/3451

V5013B,C; V3360/3361/3460/3461

V5011F,G

1/2 in.

3/4 in.

150 b

V5011H,J 150

V5011N1xxx, V5011N3xxx, V5013N 230

100

150

150

150

230

100

150 b

150

163

100

150

1 in.

1-1/4 in. 1-1/2 in.

2 in.

2-1/2 in.

3 in.

— — — 28 16

150 b

134 b

77

49

21

21

28 a

14

14

16 a

145

104

100

126

67

77

37

49

— — a

Represents maximum pressure difference between the outlet and either of the two inlets.

b Do not exceed 100 psi with V5011G valves used in steam applications.

5-5/15

(135) x

6-5/16

(161)

2-11/16 (67)

12-11/16 (322)

MINIMUM

CLEARANCE

CAUTION

Electrical Shock or Equipment Damage Hazard.

Can shock individuals or short equipment circuitry.

Disconnect power supply before installation.

Location

Install the actuator in a location that allows enough clearance for mounting accessories and for servicing.

1/2 (13) FPT

9-3/16

(233)

9-9/16

(242)

5-9/16

(141)

CAUTION

Equipment Damage Hazard.

Can damage actuator due to condensation or a valve gland leak.

Install the actuator in a position above horizontal.

YOKE

DIAMETER

1-3/8 (35)

M17419

Fig. 1. Approximate dimensions of ML6420, ML7420

Electric Linear Valve Actuator in in. (mm).

INSTALLATION

When Installing this Product...

1. Read instructions carefully. Failure to follow them could damage the product or cause a hazardous condition.

2. Check ratings and description given in the specifications to make sure the product is suitable for your application.

3. Installer must be a trained, experienced service technician.

4. After installation is complete, check out product operation as provided in these instructions.

Mounting

1. Place the actuator on the valve with the U-bolt around the valve collar. See Fig. 2.

2. Place the U-bolt against the valve collar and secure the actuator to the valve by turning each U-bolt nut clockwise.

NOTE: To assure even pressure on the collar, first tighten the nuts finger-tight and then alternate turning each U-bolt nut until both are snug.

3. Push aside the stem button retaining clip and hold. See

Fig. 3.

4. Lift valve stem until the head of the valve stem button is inside the large slot of the stem button retaining clip on the actuator.

5. Release the stem button retaining clip to secure the stem button. Check to make certain the stem button is secured by the retaining clip.

6. Remove the cover from the actuator using a Phillips or crosspoint screwdriver. See Fig. 4.

3 63-2533—03

ML6420, ML7420 NON-SPRING RETURN ELECTRIC LINEAR VALVE ACTUATORS

M6632

Fig. 2. Attaching actuator to valve collar.

All wiring must comply with local electrical codes, ordinances and regulations. Voltage and frequency of the transformer used with the actuator must correspond with the power supply and actuator characteristics. See Fig. 6 through 11 for typical wiring hookups.

1. Feed power and control wires through the conduit connector located on the bottom of the actuator case.

See Fig. 5.

CAUTION

Equipment Damage Hazard.

Conduit connection or removal can break an unsupported connector.

When removing or attaching conduit, use a wrench to support the motor connector.

2. Using the wiring diagram in Fig. 6, connect power and control wires. Make sure that all wiring is correct.

3. For ML7420 only: Check the selector plugs for proper settings. See Signal Input Failure section for details.

4. When wiring is complete, replace the actuator cover. See

Fig. 7.

5. Apply power and control signals to the actuator.

M6633

Fig. 3. Securing actuator to valve.

M17420

Fig. 4. Removing actuator cover.

Wiring

63-2533—03

CAUTION

Electrical Shock or Equipment Damage Hazard.

Can shock individuals or short equipment circuitry.

Disconnect power supply before installation.

4

M6630

Fig. 5. Connecting power and control wiring.

T6984 (FLOATING CONTROLLER)

MOTOR OPEN

MOTOR CLOSE

4

24 Vac

COMMON

2

ML6420A,B

WIRING

STRIP

T1

T2

W

B

O

1

2

3

4

POWER SUPPLY. PROVIDE DISCONNET MEANS

AND OVERLOAD PROTECTION AS REQUIRED.

ALL WIRING BLOCKS HAVE THE SAME

NUMBER OF TERMINALS (8), BUT THE ONLY

TERMINALS THAT ARE ACTIVE ON THIS

BLOCK ARE T1, T2, W, AND B.

THE T-Y-G TERMINALS ARE A THREE TERMINAL

WIRING BLOCK SEPARATE FROM THE MAIN

BLOCK. THEY DO NOT APPEAR ON ALL MODELS

BECAUSE THEY ARE FOR A SINGLE FEEDBACK

POTENTIOMETER (10K OR 220 OHMS). THE

REQUIRED WIRING BLOCKS ARE PART OF

THE POTENTIOMETER ACCESSORY KITS.

MOTOR OPEN SIGNAL DRAWS VALVE STEM

UPWARDS. MOTOR CLOSE SIGNAL DRIVES

VALVE STEM DOWNWARDS.

Fig. 6. ML6420 wiring.

3 T

Y

G

1

L1

(HOT)

L2

M32766

ML6420, ML7420 NON-SPRING RETURN ELECTRIC LINEAR VALVE ACTUATORS

Fig. 7. ML7420 wiring using feedback output from a controller with a common transformer.

ML7420

WIRING

STRIP

F

+

T2

T1

O1

O2

ML7420

WIRING

STRIP

F

+

T2

T1

O1

O2

2

F

+

INPUT

(FEEDBACK)

OUTPUT

3

1

L1

(HOT)

L2

1

2

3

POWER SUPPLY. PROVIDE DISCONNECT MEANS AND

OVERLOAD PROTECTION AS REQUIRED.

2-10 Vdc FEEDBACK SIGNAL. SEE OUTPUT SIGNAL

FEEDBACK SECTION.

0-10 Vdc OR 2-10 Vdc CONTROL SIGNAL. SEE SIGNAL

INPUT (+) SECTION.

M17422

1 2 3 4 5 6

3 2 1

SENSOR

L1

(HOT)

L2

1

DUAL

TRANSFORMERS

T775

(WITH 2-10 VDC OUTPUT)

L1

(HOT)

L2

1

1 POWER SUPPLY. PROVIDE DISCONNECT MEANS

M17423

AND OVERLOAD PROTECTION AS REQUIRED.

Fig. 8. ML7420 wiring using a 2 to 10 Vdc control signal and separate transformers.

ML7420

WIRING

STRIP

T2

T1

O1

O2

F

+

1

3

2

2

3

1

4 5 6

500 OHM

RESISTOR

T775

(WITH 4-20 MA OUTPUT)

L1

(HOT)

L2

1

1 POWER SUPPLY. PROVIDE DISCONNECT MEANS

AND OVERLOAD PROTECTION AS REQUIRED.

SENSOR

1

L1

(HOT)

L2

DUAL

TRANSFORMERS

M17425

Fig. 10. ML7420 wiring using a 4 to 20 mA control signal and separate transformers.

SENSOR

ML7420

WIRING

STRIP

T2

T1

O1

O2

F

+

1 2 3 4 5 6

3 2 1

500 OHM

RESISTOR

T775

(WITH 4-20 MA OUTPUT)

1

L1

(HOT)

L2

SINGLE

TRANSFORMER

40 VA 24 VAC

1 POWER SUPPLY. PROVIDE DISCONNECT MEANS

AND OVERLOAD PROTECTION AS REQUIRED.

M17426

Fig. 11. ML7420 wiring using a 4 to 20 mA control signal and a common transformer.

W3 W1 W2

ML7420

WIRING

STRIP

F

+

T2

T1

O1

O2

1 2 3 4 5 6

3 2 1

SENSOR

1

L1

(HOT)

L2

SINGLE

TRANSFORMER

40 VA 24 VAC

T775

(WITH 2-10 VDC OUTPUT)

1 POWER SUPPLY. PROVIDE DISCONNECT MEANS

AND OVERLOAD PROTECTION AS REQUIRED.

M17424

Fig. 9. ML7420 wiring using a 2 to 10 Vdc control signal and a common transformer.

0% 50% 100%

5

M32767

Fig. 12. Location of W1, W2, and W3 selector plugs.

63-2533—03

ML6420, ML7420 NON-SPRING RETURN ELECTRIC LINEAR VALVE ACTUATORS

M17428

Fig. 13. Replacing actuator cover.

63-2533—03 6

ML6420, ML7420 NON-SPRING RETURN ELECTRIC LINEAR VALVE ACTUATORS

Auxiliary Potentiometers

The 43191679 Auxiliary Potentiometers can be used as feedback potentiometers and to provide remote indication of valve position. See the Installation Instructions packed with the potentiometers.

Auxiliary Switches

The 43191680 Dual Auxiliary Switch can be used on both the

ML6420 and ML7420 Electric Linear Valve Actuators. Switching points are adjustable over the full length of the actuator stroke; for example, the switch can be used to switch pumps or to provide remote indication of any stroke position. See the

Installation Instructions packed with the auxiliary switch.

CAUTION

Equipment Damage Hazard.

Improper voltage damages the auxiliary switch beyond repair.

Use the 43191680 Dual Auxiliary Switch only with

24 Vac applications.

OPERATION

General

In the actuator, the drive of a synchronous motor is converted into the linear motion of the actuator stem by using a spur gear transmission. A button retainer clip connects the actuator stem to the valve stem.

Manual Operation

The ML6420 and ML7420 are equipped with a manual operator knob (see Fig. 14) to open or close the valve in the event of power failure:

1. Turn off or disconnect the power supply before manually operating the actuator.

2. Push down on the manual operator knob and turn the knob: a. Counterclockwise to drive the stem downward.

b. Clockwise to draw the stem upward.

IMPORTANT

Manual operation allows very high closing force that can jam the actuator spindle, exceed the force switch ratings, and stop the motor. After a manual valve close-off operation, release the spindle one turn by turning the manual operator knob. This will ensure automatic disengagement of the manual operator upon power resumption.

NOTE: If the manual operator knob is not pushed in while turned, it will rotate only a short distance before disengaging without power resumption.

M6640

Fig. 14. Manual operator knob.

ML7420

Signal Input (+)

The analog input signal (+) range is set at the factory to 0 to 10

Vdc. Changing the position of the W2 selector plug sets the range to 2 through 10 Vdc. Selector plugs W1, W2, and W3 are positioned on the back side of the printed circuit board. See

Fig. 12 for location of the selector plugs.

Signal Input Failure

Using the potentiometer, the actuator can be set to run to any position in event of a signal failure (ML7420/25 only). ML6420 does not have any input signal failure jumpers or potentiometers.

Output Signal Feedback (F)

An analog output signal (2 to 10 Vdc) that represents the actual actuator stem position is available at terminal F. It can be used for remote indication of the stem position. When the actuator stem is fully downward, the output signal is 10 Vdc.

When the valve stem is up, the output signal is 0 or 2 Vdc. The output of the signal does not change when the action of the actuator is reversed using W3. See Direction of Action.

Actuator Override

To override the control signal (for freeze protection or similar applications), connect the 24 Vac common (T2) to either terminal O1 or O2. Connecting to terminal O1 fully extends the actuator stem. Connecting to O2 fully retracts the actuator stem.

The control signal (+) is ignored when the override signal is applied to terminal O1 or O2. This override can be achieved with a switch or a relay. See Fig. 15.

7 63-2533—03

ML6420, ML7420 NON-SPRING RETURN ELECTRIC LINEAR VALVE ACTUATORS

ML7420

WIRING

STRIP

T1

O1

O2

F

+

T2

2

F

+

INPUT

(FEEDBACK)

OUTPUT

3

SP3T

OVERRIDE

SWITCH

4

1

L1

(HOT)

L2

1

2

3

4

POWER SUPPLY. PROVIDE DISCONNECT MEANS

AND OVERLOAD PROTECTION AS REQUIRED.

2-10 Vdc FEEDBACK SIGNAL. SEE OUTPUT SIGNAL

FEEDBACK SECTION.

0-10Vdc OR 2-10 Vdc CONTROL SIGNAL. SEE SIGNAL

INPUT (+) SECTION.

SEE OVERRIDE SECTION FOR DETAILS ON

OVERRIDE OPERATION.

M17429

Fig. 15. Connections for overriding control signal to drive ML7420 to a specific position.

Direction of Action (ML7420/25 only)

The direction of the actuator action can be changed using the pushbutton and LED, which is factory set so that the actuator drives the valve stem down on increasing signal and draws the valve stem up on decreasing signal. With the valve stem up, the output signal from the feedback (F) function is either 0 or 2 Vdc. The output of the signal does not change when W3 is used to reverse the actuator action. See Fig. 12.

CHECKOUT

The actuator can be checked out either directly or by using a controller.

Direct Checkout

1. Mount the actuator for the required application; see

Installation section.

2. Check the valve position and make sure that 24 Vac is correctly applied to the actuator.

3. Apply the power to the appropriate leadwires to move the valve.

4. If the actuator does not move, make sure the actuator is properly installed/wired.

5. If the actuator installation and wiring are both correct and the actuator does not run, replace the actuator.

Controller Checkout

1. Adjust the setpoint of the controller to call for opening the valve. Observe the actuator.

2. If the valve is closed, it should begin to open.

3. If the valve remains closed, move the setpoint further toward the open setting.

4. If the valve does not move, check for 24 Vac in the actuator power input.

5. If 24 Vac is present and the actuator does not operate, check the voltage across the controller leadwires to determine if the device is miswired.

6. If the wiring is correct, 24 Vac is present on the power input terminals, and the actuator does not run, replace the actuator.

Automation and Control Solutions

Honeywell International Inc.

1985 Douglas Drive North

Golden Valley, MN 55422 customer.honeywell.com

® U.S. Registered Trademark

© 2011 Honeywell International Inc.

63-2533—03 M.S. Rev. 07-11

Printed in U.S.A.

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