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 =

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

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 /

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 40 – 80 15 – 65 15 – 80

100 – 150 100 – 150 100 – 150

80 – 100

100 – 150

100

LED

Fig. 1. Pushbuttons and potentiometer (default positions)

EN0B-0481GE51 R1206

+ 2 hidden pages