Danfoss ABNM A5 Data sheet

Data Sheet

Actuator ABNM A5
0-10 V Proportional

For Use with RA2000 Valves

Application

The ABNM A5 0-10V thermal actuator is designed
for use with RA2000 Thermostatic Radiator Valves
in heating and cooling applications.

Features include:

• Safety function of normally closed (NC) actuator
during power failure

• Low power consumption 1W

• Removalable plug-in cable

• Simple snap-on installation

• Actuator orintation in any installation position

• First-Open function (NC versions)

• Compact size, small dimensions

• 24V AC power source

• Position indicator

• Noiseless and maintenance-free

Control is done by a 0-10 V signal, which is
provided either by a 3rd party room thermostat
or, in most cases, by a central direct digital
control (DDC) system. The actuator converts the
0-10 VDC signal into a proportional actuator
travel to the RA2000 or RA-C series of valves.

Suitable applications for the ABNM A5 actuator
can include fan coil units, chilled ceiling applica­tions, radiant oor heating or radiator valves. It is
not recommended that the ABNM A5 actuator be
used on low pressure steam applications due to
the increased temperature environment that the
actuator is exposed to.

Ordering

Spare Parts

Typ e

ABNM A5,
for RA2000

Mounting base adapter VA78

Cables Code no.

3 feet (1 meter) 082F1081
16 feet (5 meters) 082F1082
32 feet (10 meters) 082F1083

Supply

voltage

24 V AC 4 mm NC 0 - 10 VDC 082F1111

Stem

Travel

Description Code no.

Position during

power loss

Input

Signal

Code no.

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Data Sheet Actuator ABNM A5 for RA2000 Valves, 0-10 V Proportional

Function

Technical Specications

The actuator mechanism of the ABNM actuator
uses a positive temperature coecient (PTC)
resistor heated wax element and a compression
spring.
The wax element is heated by applying the
operating voltage and moves the integrated
piston. The force generated by this movement is
transferred to valve spindle and thus opening or

Version NC “normally closed”

In case of the normally closed version, valve is
closed when de-energized. Valve is opened
steadily upon switching on the power supply, set­ting control signal to 10 V and after expiry of the

dead time.
closing the valve. The actuator provides active
regulation in a dened range (see characteristic
curve between 0.5 V and 9.5 V).
The function display (all-round display) of the
ABNM shows at the rst glance whether the valve

Power

ON

is “open” or “closed”.

First open function

In its delivery condition ABNM is partly open due
to the rst open function (lling). This enables

Function display for NC versions extends

proportionally with actuator opening from 0 mm

to 5-6 mm.
heating/cooling operation during the construc-

tion phase even when the electric wiring is not
yet complete. During the later electrical start-up,
the rst open function is unlocked by applying
the power supply for more than 6 minutes.

Operating voltage

24 V AC 50/60 Hz

(-10% to +20%)
Max. inrush current < 300 mA for max. 2 min.
Operating power 1 W

1)

Control voltage 0-10 V DC
Input resistance 100 kΩ
Actuator travel 4 mm
Actuating linear force 100 N ± 5%
Closing (NC) or opening (NO) time when de-energized 3-5 min.
Travel speed 30 s/mm
Calibration time (including First Open for NC) > 6min.

2)

2)

Delay when energizded (heat up time) 2-3 min.
Fluid temperature 32 to 212°F (0 to 100° C)

2)

Storage temperature -13 to 149°F (-25 to 65°C)
Ambient temperature 32 to 140°F (0 to 60° C)
Suitable applications Hot or chilled water

3)

Degree/class of protection NEMA 3 (IP54

/III safety extra-Iow voltage)
Connecting cable 3 x 0.22 mm², halogen free
Mounting Adapter (included) VA 78
Weight 0.24 lb (111 g)
Housing material Polyamid / white

1)

Measured with precision power meter LMG95.

2)

Measured at ambient temperature 68°F (20°C). Due to thermal working principle of ac tuator some parameters vary

with ambient temperature. At higher ambient temperatures actuator opening is faster and closing slower. At lower
ambient temperatures actuator closing will be faster and opening slower.

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VDSKA422 © Danfoss 03/2016

Data Sheet Actuator ABNM A5 for RA2000 Valves, 0-10 V Proportional

24 V AC/DC

L1 L2 0 - 10

100%

Flow (%)

0 1 2 3 4 5 6 7 8 9 10

U (V)

Characteristic Curves

Electrical Connections

80%

LIN versions

LOG versions

60%

40%

20%

0%

Control characteristics of LOG and LIN versions.

V DC

GND Blue

Transformer

Rule-of-the-thumb formula for dimensioning
transformer:
P

transformer

= 6 W x number of ABNM actuators

Red

Black

Calculation of max. cable length (copper cable):

L = K x A / n

A: Conductor cross-section in mm

2

n: Number of ABNM actuators
K: Constant for copper (269 m/mm2)
L: Cable length in m

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Data Sheet Actuator ABNM A5 for RA2000 Valves, 0-10 V Proportional

Installation

1) Full mount the adapter to the valve body.

2) Tighten the Allen screws on the adapter.

3) Align the actuator head to the adapter and push down.

4) There should be an audible to indicate the actuator is fully
mounted to the adapter.

First Open Function

Fully push the cable plug into the actuator.

Presentation of First Open Function (Unlock NC version).

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VDSKA422 © Danfoss 03/2016

Data Sheet Actuator ABNM A5 for RA2000 Valves, 0-10 V Proportional

61.5 mm 44.3 mm

51.1 mm 5 mm

Dimensions

53 mm

2.1 in (53mm)

0.3 in

(7mm)

2.0 in (51.1mm)

2.4 in (61.5mm)

1.7 in (44.3mm)

Danfoss can accept no responsibility for possible errors in printed materials and reser ves the right to alter its products without notice.
All trademarks in this material are proper ty of the respective companies. Danfoss and Danfoss logotype are trademark s of Danfoss A/S. All rights reser ved.

Danfoss

Toronto, ON
Tel.: [phone], Fax: [phone]
www.na.heating.danfoss.com

VDSKA422 © Danfoss 03/2016

Danfoss

Baltimore, MD
Tel.: [phone], Fax: [phone]
www.na.heating.danfoss.com

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