Honeywell ML6435B SPECIFICATION DATA
ML6435B
ELECTRIC LINEAR ACTUATOR
FOR FLOATING CONTROL
SPECIFICATION DATA
FEATURES
• Easy and quick installation
• No separate linkage required
• No adjustments
• Low power consumption
• Force-limiting end switches
• Spring return
• Models for low and line voltage
• Synchronous motor
GENERAL
The ML6435B actuator is designed to provide floating control
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.
The V5825B or V5872B valve and ML6435B actuator
combination provides safety close-off function and is
approved according to DIN EN 14597.
• Corrosion-resistant design
• Maintenance-free
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
Safety
Protection standard IP54 as per EN60529
Protection class II as per EN60730-1
Operating mode Type 2B as per
EN 60730-1, 6.4
Wiring
Terminals 1.5 mm
Cable entry PG13.5 with cut-out ring
Weight 0.5 kg
Dimensions See Fig. 1 on page 3
Material
Cover ABS-FR
Base Glass fiber reinforced plastic
2
® U.S Registered Trademark
Copyright © 2009 Honeywell Inc. • All Rights Reserved EN0B-0259GE51 R0209
ML6435B ELECTRIC LINEAR ACTUATOR
OS-number ML6435B1008 ML6435B1016
supply voltage
power consumption
signal input 1
signal input 2
nominal stroke
run-time at 50 Hz
nominal stem force
spring return time
(6.5 mm stroke)
spring return direction
Supply voltage between terminals 1 and 24V∼;
Supply voltage between terminals 2 and 24V∼;
24 Vac -15/+20%, 50/60 Hz 230 Vac +10/-15%, 50/60 Hz
3 VA 6 VA
actuator stem extends.
actuator stem retracts.
Actuator stem retracts at power failure
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.
Manual Operation
The actuator is equipped with a manual operator (for 8 mm
Hex Key). Manual operation is possible only after the power
supply is switched off or disconnected. It disables the actuator
safety function and should be used only for the purpose of
checking the valve operation.
The manual operator is located under the cover.
Spring Return
The ML6435B spring return actuator provides a defined safety
position of the valve in case of power failure. In the event of a
power failure, the actuator retracts its stem.
Supply voltage between terminals 1 and
230V~; actuator stem extends.
Supply voltage between terminals 2 and
230V~; actuator stem retracts.
6.5 mm
60 s
400 N
max. 20 s
Suitable Valves
DN15 DN20 DN25 DN32 DN40 order no.
close-
off
pres-
sure in
kPa
1600 -- 1600 -- -- V5872B
-- 1600 1200 1000 V5832B
-
-- 1600 1200 1000 V5833A
-
2500 2500 2500 2500 -- V5825B
APPROVALS
NOTE: Actuators ML6435B1008 and ML6435B1016 in
combination with the following valves are approved
according to DIN EN 14597:
valve OS-no. DIN registration no.
V5825B 1F152/08
EN0B-0259GE51 R0209 2
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