Honeywell ML7420A6025 SPECIFICATION DATA

ML7420A6025

ELECTRIC LINEAR VALVE ACTUATOR

SPECIFICATION DATA

FEATURES

• Easy and quick installation

• No separate linkage required

• No adjustments required

• Low power consumption

• Force-limiting end stops

• 2...10 Vdc signal input

• Direct / reverse action selectable

• Corrosion-resistant design

• Maintenance-free

ML7420A6025

GENERAL

The ML7420A6025 actuator is designed for modulating
control with controllers providing an analog output of

2...10 Vdc.
It operates Honeywell’s standard valves in heating, district

heating, ventilation and air conditioning (HVAC) applications.
The direction of movement can be reversed by pressing the

pushbutton (with LED) located on the printed circuit board.

SPECIFICATIONS

Supply voltage 24 Vac +/-15% 50/60 Hz
Power consumption 5 VA

Temperature limits

Ambient operating limits -10...+50 °C at 5...95%rh
Ambient storage limits -40...+70 °C at 5...95%rh
Medium valve temperature Max. 150 °C (220 °C with

High-Temperature Kit)

Signal

Signal input voltage y =

R

Stroke 20 mm
Run time 1 min (at 50 Hz)
Close-off force ≥600 N

Safety

Protection class III as per EN60730-1
Protection standard IP52 as per EN60529
Flame retardant housing V0 as per UL94
(with metal cable gland)

Wiring terminals 1.5 mm
Weight 1.3 kg

Material

Cover ABS-FR
Base Glass fiber reinforced plastic

Yoke Aluminum die-cast
Dimensions see Fig. 2.

2...10 Vdc

= 100 kΩ

i

2

® U.S. Registered Trademark EN0B-0481GE51 R1206
Copyright © 2006 Honeywell Inc. • All rights reserved

ML7420A6025 ELECTRIC LINEAR VALVE ACTUATOR

OPERATION

General

The drive of a synchronous motor is converted into the linear
motion of the actuator stem by a spur gear transmission. The
actuator stem is connected with the valve stem by a button­keyed retainer connection.

An integrated spring package limits the stem force in either
direction to a factory-set value.

The actuator switches off precisely when the specified stem
force is reached.

Electrical Installation

Three knock-outs are provided for cable fitting:

• 2x ∅21.2 mm (M20)

• 1x ∅18.9 mm (M18)

Maximum cable length / diameter for field mounting: 200 m /

2

1.5 mm

Action

The direction of action can be reversed by pressing the
pushbutton (W3) located on the printed circuit board (see Fig.

1), If the corresponding LED is lit, this indicates that the
actuator stem will retract at a control signal of 2 Vdc (factory
setting); if it is dark, the actuator stem will extend at a control
signal of 2 Vdc.

NOTE: The pushbutton (W3) is accessible after the cover

.

has been removed and is located at the rear side of
the protection sheet of the printed circuit board.

Accessories

Auxiliary Switches

The actuator can be equipped on site with an auxiliary switch
unit with two switches. Their switching points are adjustable
over the full length of the actuator stroke. The switches can
be used to switch pumps or to provide remote indication of
any stroke position.

Order number: 43191680-205

High-Temperature Kit

The High-Temperature Kits are necessary for applications
between 150 and 220 °C medium valve temperature.

order number

High-Temperature Kit

43196000-001

43196000-002

43196000-038

valve DN

V5011A/V5011K
V5013A/V5013G
V5011R/V5013R
V5328A/V5329A

V5011A
V5013A/V5013G
V5328A/V5329A

V5049A

V5050A

V5328A

V5016A

V5025A

V5049A (PN25/40)

V5050 (PN16)

V5050 (PN25/40)

15 – 40
15 – 40
15 – 50
15 – 32

50

50
40 – 80
15 – 65
15 – 80

100 – 150
100 – 150
100 – 150

80 – 100

100 – 150

100

W3

LED

Fig. 1. Pushbuttons and potentiometer (default positions)

EN0B-0481GE51 R1206

2

CLOSE-OFF PRESSURE RATINGS

ML7420A6025 ELECTRIC LINEAR VALVE ACTUATOR

stem force

stroke

valve

mm 15 20 25 32 40 50 65 80

size

inch ½ ¾ 1 1 ¼ 1 ½ 2 2 ½ 3

600 N

20 mm

valves close-off pressure ratings (in kPa)

V5011R/S 1600 1600 1000 700 460 260

V5328A 1600/1000 1000 1000 600 350 200 120 50

V5016A 1600 1600 1600 1600 1600 1600 1600 1600

V5025A 2500 2500 2500 2500 2500 2500 2500 2500

V5049A 1600/1000 1000 1000 600 350 200 120

V5013R/E 1600 1600 1000 700 460 260

V5329C 600 600 600 600 480 260 160 100

V5329A 1000 1000 1000 790 480 260 160 100

V5050A 1000 1000 1000 600 350 200 120 50

For details on the valves, see following Specification Data No.:
V5011R EN0B-0064GE51 V5328A EN0B-0432GE02 V5095A EN0B-0412GE51
V5011S EN0B-0085GE51 V5329A/5050A EN0B-0310GE51 V5013R EN0B-0065GE51
V5016A EN0B-0440GE51 V5025A EN0B-0442GE51 V5013E EN0B-0446GE51
V5049A EN0B-0238GE51

ML7420A6025 (2...10 V)

Accessory

67.4

135x(161)

M

24 V

24 V~

2...10 V

Y

3 456

24 V

24 V~

1 2

S1 S2

auxiliary switches

250 Vac / 5(3) A

!

242

100

0

1000

233

322 (with High-Temperature Kit: 402 mm)

141

Fig. 2. ML7420A6025, dimensions (in mm)

Fig. 3. ML7420A6025, wiring and accessories

3 EN0B-0481GE51 R1206

ML7420A6025 ELECTRIC LINEAR VALVE ACTUATOR

Manufactured for and on behalf of the Environmental and Combustion Controls Division of Honeywell Technologies Sàrl, Ecublens, Route du Bois 37, Switzerland by its Authorized Representative:

Automation and Control Solutions

Honeywell GmbH
Böblinger Straβe 17
D-71101 Schönaich / Germany
Phone: [phone] - 01
Fax: [phone] - 493
http://europe.hbc.honeywell.com

Subject to change without notice. Printed in Germany

EN0B-0481GE51 R1206