Honeywell ML7430E, ML7435E SPECIFICATION DATA

ML7430E/ML7435E

ELECTRIC LINEAR ACTUATORS

FOR MODULATING CONTROL

SPECIFICATION DATA

FEATURES

• 0...10 Vdc / 2...10 Vdc signal input

• Fast run-time

• Low power consumption

• Quick and easy installation

• No separate linkage required

• No calibration

• Force-limiting end switches

• Spring return (ML7435E)

• Manual operator

• Synchronous motor

• Direct / reverse action adjustable

• Maintenance-free

GENERAL

The ML7430E and ML7435E Electric Linear Actuators are designed to provide modulating control in closed control loops together with the small linear valves V5832B/V5833A (DN25...DN40) and V5825B/V5872B for high-differential pressure.

These valve-actuator combinations are suitable especially for integration into compact or conventional stations for direct or indirect district heating connections, air handling units and roof top units for zone control, and domestic hot water applications.

The actuators are microprocessor-controlled for exact positioning. The direction of movement is reversible. The V5825B or V5872B valve and ML7435E actuator combination provides safe close-off function and is approved according to DIN EN 14597.

SPECIFICATIONS

Temperature Limits Ambient operating limits 0...+50 °C at 5 to 95% rh Ambient storage limits -40...+70 °C at 5 to 95% rh Medium valve temperature max. +130 °C

Signals

Input voltage range Y = 0...10 Vdc or 2...10 Vdc Input resistor R

Signal source output register Max. 1 kΩ

Safety

Protection standard IP54 as per EN60529 Protection class II as per EN60730-1

Flame retardant V0 as per UL94 (optional with metal cable gland) Software class A as per EN 60730-1 Operating mode See Table 1 on pg. 2

Wiring

Terminals 1.5 mm Cable entry M20x1.5

Weight 0.37 kg / 0.5 kg

Dimensions See Fig. 2 and Fig. 3

Material

Cover ABS-FR Base Glass fiber reinforced plastic

= 100 kΩ

ML7430E/ML7435E Electric Linear Valve Actuator

Table 1. Specifications, by model

OS-number ML7430E1005 ML7435E1004

supply voltage

power consumption

signal input 0(2) Vdc (factory setting)

signal input 10 Vdc (factory setting)

nominal stroke

run-time at 50 Hz

nominal stem force

spring return time (6.5 mm stroke)

spring return direction

operating mode (as per EN 60730-1, 6.4)

OPERATION

General

The drive of a synchronous motor is converted into linear motion of the actuator stem by using a spur gear transmission. Actuator and valve are directly connected by a nut.

An integrated mechanism limits the stem force. Installed microswitches switch off the actuator precisely when the specified stem force is reached.

The close-off position is self-adjusting by means of an automatic synchronization function. Synchronization is performed when the applied control signal is 0 V or 10 V. The actuator then checks its end position every 20 minutes. Any manual operation will be detected within 20 minutes, at the latest, and the actuator will return to its end position after that control cycle.

4 VA 4 VA

15 s 60 s

type 1B type 2B

Input Signal Range

The range of the analog input signal Y (0...10 Vdc or

2...10 Vdc) can be selected by changing the position of jumper plug W2 (see Fig. 1). The factory set is at 0...10 Vdc.

Direction of Action

The direction of action (direct or reverse) can be selected by changing the position of jumper plug W1 (see Fig. 1). It is set by the factory such that the stem extends at increasing signal and retracts at decreasing signal (direct action).

24 Vac -15/+20%, 50/60 Hz

actuator stem retracts

actuator stem extends

6.5 mm

400 N

-- max. 20 s

-- actuator stem retracts at power failure

0...10 V2...10 V 10 V

Manual Operation for ML7430E

The actuators are equipped with a manual operator. Manual operation is possible only after the power supply has been switched off or disconnected. It should be used only to check the valve operation. To operate, turn the manual operator knob clockwise to move the stem downward and counterclockwise to move the stem upward.

NOTE: Jumper plugs W1 and W2 are accessible after the

Fig. 1. Jumper plugs W1 and W2

cover has been removed (see Fig. 1).

Manual Operation for ML7435E

The actuators are equipped with a manual operator (for 8 mm Hex Key). Manual operation is possible only after the power supply has been switched off or disconnected. It disables the actuators safety function and should be used only to check the valve operation. The manual operator is located under the cover.

Electrical Installation

To avoid the voltage drop influence of the cabling, it is recommended that you wire control signal Y and 24 V⊥ separately from power supply wiring.

10 V

EN0B-0260GE51 R0209 2

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