Data Sheet
Actuator Type ABNM-LOG/LIN for AB-QM, 0-10
V Proportional
Application
Function
The ABNM actuator is a thermoelectric actuator
for opening and closing valves in the fields of
heating, ventilation and air conditioning systems
(HVAC).
The actuator mechanism of the ABNM actuator
uses a positive temperature coefficient (PTC)
resistorheated 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 the piston, thus opening or closing
the valve.
The closing force of the compression spring (100
N actuating force) is matched to the closing force
of the valves and keeps the valve closed when
de-energized. When the control voltage is
applied (0-10 V), the wax element is heated under
electronic control. The actuator provides active
regulation in a defined range (see characteristic
curve between 0.5 V and 10 V).
In the range of 0 – 0.5 V, the actuator remains in a
quiescent state in order to ignore ripple voltage
occurring in long cables. The relation between
control voltage and actuator travel is balanced by
optical path measurement, allowing very
accurate positioning. When the control voltage is
outside of the active range, the valve is kept
closed by the closing force of the compression
spring.
Control is done by a 0-10 V signal, which is
provided either by a room thermostat or, in most
cases, by a central direct digital control (DDC)
system. The actuator converts the 0-10 V signal
into a proportional actuator travel, which can be
either linear (ABNM LIN) or logarithmic (ABNM
LOG).
Ideal use in heating/cooling systems and in
▪
combination with central direct digital
control (DDC) systems in building
management systems (BMS).
ABNM LOG for actuating valves controlling
▪
the flow of liquid to air heat exchanges, e.g.
cooling fan coils or air handling units.
ABNM LIN for actuating valves controlling
▪
the flow of liquid to liquid heat exchangers.
First open function (for NC only)
In its delivery condition, the ABNM is kept open
when de-energized due to the first open function
(filling). This enables heating/cooling operation
during the carcass construction phase even when
the electric wiring is not yet complete. During the
later electrical start-up, the first open function is
unlocked by applying the operating voltage for
more than 6 minutes and the ABNM will then be
completely operable.
Automatic calibration
During the electrical start-up the valve closing
point is detected. This ensures an optimum
match with the specific valve used.
Function display
The function display (all-round display) of the
ABNM shows at the first glance whether the valve
is “open” or “closed”.
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Data Sheet Actuator Type ABNM-LOG/LIN for AB-QM, 0-10 V Proportional
Code Nos. and Technical
Data
Accessories
Type Supply voltage Control voltage Valve function
ABNM LOG with
VA50 adapter
ABNM LOG with
VA50 adapter
ABNM LIN with
VA50 adapter
ABNM LOG without
adapter
ABNM LIN without
adapter
* Halogen free
Note: For theft protection order 082F1091
Valve adapters
Connection Code no.
Danfoss AB-QM VA50 082F1075
Cable (halogen free)
Length Code no.
1 meter 082F1081
5 meter 082F1082
10 meter 082F1083
24 V AC 0-10 V DC
24 V AC 0-10 V DC
24 V AC 0-10 V DC
24 V AC 0-10 V DC
24 V AC 0-10 V DC
NC (normally
closed)
NC (normally
closed)
NC (normally
closed)
NC (normally
closed)
NC (normally
closed)
Cable*
length
1 m 082F1191
5 m 082F1192
1 m 082F1193
no 082F1198
no 082F1199
Code no.
Data
Version Closed when de-energized
Voltage 24 VAC 50/60 Hz (-10% to +20%)
Max. inrush current <300 mA during approx. 2 min.
Operating current 90 mA
Operating power 0.4 W
Control voltage 0-10 V DC
Proportional conversion range of
control voltage
Input resistance 100 kΩ (also 10 kΩ factory setting, if ordered)
Actuator travel In the range 0.5-10V the actuator proportional controls (LOG or
Average actuation delay 30 s/mm
Actuating force 100 N +/- 5%
Operating temperature 0 - 60 °C
Fluid temperature 0 - 100 °C
Storage temperature -25 to 65 °C
Ambient temperature 0 to 60 °C
Relative humidity max. 80%
Degree/class of protection IP54 (only when connected to cable)/Safety extra-Iow voltage
CE conformity according to 60730
Housing/housing colour Polyamid/white RAL 9003
Weight 100 g without adapter and cable
Connecting cable/cable length
0.5-10 V DC
LIN) a 0-4 mm stroke, starting from the closing point of the
valve. The stroke is mechanically limited at 4.5 mm.
3 x 0.22 mm2 PVC, white, halogen free/1 meter, 30 g
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Data Sheet Actuator Type ABNM-LOG/LIN for AB-QM, 0-10 V Proportional
Characteristic Curves
ABNM-LOG, transformation curve
Relative stroke
Input signal (volt)
ABNM-LIN, transformation curve
Relative stroke
Input signal (volt)
ABNM actuator
The actuator converts the 0-10 V signal into a
proportional actuator travel of 0-4.5 mm.
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Data Sheet Actuator Type ABNM-LOG/LIN for AB-QM, 0-10 V Proportional
Dimensions Connections
Transformer Calculation of max. cable length (copper cable)
Rule-of-the-thumb formula for dimensioning
transformer:
P
transformer
= 6 W x number of ABNM actuators 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 Type ABNM-LOG/LIN for AB-QM, 0-10 V Proportional
Installation
Danfoss AB-QM VA50, code no. 082F1075
1. Screw the suitable valve adapter on the
valve by hand.
2. The actuator is mounted on the adapter
ring. ABNM can be mounted in 360°.
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3. Switch on the power supply.
Data Sheet Actuator Type ABNM-LOG/LIN for AB-QM, 0-10 V Proportional
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Data Sheet Actuator Type ABNM-LOG/LIN for AB-QM, 0-10 V Proportional
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Data Sheet Actuator Type ABNM-LOG/LIN for AB-QM, 0-10 V Proportional
Danfoss A/S
Heating Solutions
Haarupvaenget 11
8600 Silkeborg
Denmark
Phone:+45 7488 8000
Fax: +45 7488 8100
Email: heating.solutions@danfoss.com
www.heating.danfoss.com
Danfoss can accept no responsibility for possible errors in catalogues, brochures and other printed material. Danfoss reserves the right to alter its products without notice. This also applies to products
already on order provided that such alterations can be made without subsequential changes being necessary in specifications already agreed. All trademarks in this material are property of the respective
companies. Danfoss and the Danfoss logotype are trademarks of Danfoss A/S. All rights reserved.
8 VDSKF202 © Danfoss 10/2011 Danfoss Heating Solutions
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