Mohlenhoff OEM-Actuator 24 V, Technical Information

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Actuators
Technical Data
Technical Information
OEM-Actuator
Type A 4004 / A 4104
Version normally closed / normally open
Voltage 24 V AC/DC, +20%...–10%, 0–60 Hz
Max. inrush current 250 mA during 2 min max.
Operating current 75 mA
Operating power 1.8 W
Closing and opening times approx. 3 min.
Actuator travel 4 mm
Actuating force 100 N ± 5%
Fluid temperature 0 - 100 °C
1)
Storage temperature -25 to +60°C
Ambient temperature 0 to +60°C
Protection type / protection class IP 54
2)
/ III
CE conformity according to EN 60730
Housing / housing colour Polyamide / grey
Weight 100 g with a 1 m connecting cable
Connecting cable / length
3)
2 x 0.75 mm
2
PVC, grey / 1 m
Technical changes reserved. 8-D58-40-342 Index 25. Reprint, in whole or in part, is only admissible with our approval.
Characteristic Curves
Normally Closed (NC) Normally Open (NO)
max
4
3
2
1
0
max
4
3
2
1
0
on
off
voltage on
time
make break
stroke [mm]
voltage
time
dead
time
hold time
on
off
voltage on
time
make
break
stroke [mm]
voltage
time
dead
time
hold time
Möhlenhoff Wärmetechnik GmbH
Museumstraße 54a
38229 Salzgitter / Germany T49 (0)53 41·8475-0
Telefax +49 (0)53 41·8475-99 E-Mail: contact@moehlenhoff.de
Internet: www.moehlenhoff.com
OEM-Actuator with valve adapter
1) in dependence of the adapter even higher
2) in all installation positions
3) special length on demand, but < 5.0 m
4) referring to standard valves
Planning and Installation Notes
Valve Adaptation
Installation Positions
Valve adaptation is archived by a valve adapter which is available in
different versions to suit the most common valve bottoms and heating
circuit distributors (please consider when ordering).
Prefered installation positions of the OEM-Acutator are vertical and
horizontal. An up-side down position may reduce product life through
special circumstances (e.g. contaminated water).
Calculation of maximum cable length (copper cable) for 24 V rated voltage
L = K
x
A / n
A Conductor cross-section in mm²
n Number of Actuators
K Constant (269 m/mm
2
)
L Cable length in m
We recommend the following cables for installing a 24 V system:
Bell wire:
Y(R) 0,8 mm
2
Light plastic-sheathed cable: NYM 1,5 mm
2
Flat webbed building wire: NYIF 1,5 mm 2
Transformer:
A safey isolating transformer according to EN 61558-2-6 (Europe) or class
II FCC-quality proofed (North America) must always be used. Transformer
dimensioning results from the making capacity of the OEM-Actuators.
Rule-of-thumb formula:
P
Transformer
= 6 W x
n = number of OEM-Actuators
Connections Overview
24 V AC
L1 L2
OEM-Actuator
A 4004 / A 4104
time-switch
Thermostat
R 20..
+4 mm
47 mm
54 mm
4)
44 mm