EN
INSTRUCTION
SEZ2M24
IN20071 REV. A, 2022-04-04
Caution!
Read and understand the instruction before using the product.
Caution!
Ensure that the installation complies with local safety
regulations.
Caution!
Before installation or maintenance, the power supply should
first be disconnected. Installation or maintenance of this unit should only
be carried out by qualified personnel. The manufacturer is not responsible
for any eventual damage or injury caused by inadequate skills during instal-
lation, or through removal of or deactivation of any security devices.
Function
The SEZ2M24 is an electromechanical actuator, intended for use in
applications such as heating, cooling, ventilation, chilled beams, fan-coils
and radiators. The actuator has DIP switches for setting different functions.
The actuator is very versatile, suitable for a wide range of valves.
Technical Data
Supply voltage
24 V AC/DC +/- 15 %
Control signal
0(2)…10 V / (0)4…20 mA
Power consumption
2 W / 6 VA
Inrush current
1.8 A
Stroke
1-8.5 mm
Running time
5.5 s / mm
Force
200 N
Visual position indicator
LED
Status and diagnostic indicator
LED
Manual override
By 4 mm Allen key
Ambient temperature
0…50 °C
Ambient humidity
95 % RH, non-condensing
Dimensions (W x H x L)
50 x 88 x 93 mm
Protection class
IP54
Cable length
1.5 m (halogen free)
Installation
Start-up sequence
When the power to the actuator is turned on, the actuator automatically
calibrates to determine closing point and stroke length of the valve. After
that it will proceed to normal operation according to control signal.
Note!
The actuator will not work properly if no valve is installed.
Mounting
Upside down installation is allowed, along with the standard horizontal and
vertical installation.
Fix the actuator to the valve using the connection nut, manual power is
sufficient.
Caution!
Do not use any tools as they can damage the actuator bracket.
Make sure the actuator stem is completely retracted before mounting it
on the valve.
Valves from other brands
See valve requirements in image below, when using valves from other
brands than Industrietechnik.
A
B
C
M30 x 1,5 mm*
D
Figure 1 A = min. 9.0 mm; B = max 17.5 mm; C = max Ø 20.5 mm; D = max 9.0
mm, * Adapters in range M28 x 1.5 mm to M30 x 1.5 mm are available. Contact
Industrietechnik for more information.
Wiring
The actuator has a halogen free connection cable fixed to the actuator.
Connect the supply voltage and control signal. If the actuator and controller
share a transformer, it is very important to keep the phase separate from the
zero, so the same pole is used as zero for both controller and actuator, since
this is the reference for the control signal.
1
2
3
4
24 V AC/DC (G) (+)
24 V AC/DC (G0) (-)
0…10 V DC input
0…10 V DC output
Figure 2 1 = Black; 2 = White; 3 = Red; 4 = Green
DIP switches
There are six DIP switches for setting different functions. Follow the table
below for setting the DIP switches.
Adjusted settings will be valid only after the next power-on.
Open the switch rubber seal with a screwdriver. Rotate the rubber seal
upwards to have access to the DIP switches. If switch setting is changed
during operation the power need to be cut and put back on before the
settings to take effect.
Note!
When the switch rubber seal is open, IP54 rating no longer applies.
SEZ2M24
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