EN
INSTRUCTION
SEZ2F24
REV. A,
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 SEZ2F24 is an electromechanical actuator, intended for use in
applications such as heating, cooling, ventilation, chilled beams, fan-coils
and radiators. The actuator is very versatile, suitable for a wide range of
valves.
Technical Data
Supply voltage
24 V AC/DC +/- 15 %
Control signal
2 or 3-point, 3-wire
Power consumption
2 W / 6 VA
Inrush current
1.6 A
Stroke
1-8.5 mm
Running time
5.5 s / mm
Force
200 N
Visual position
indicator
LED
Status and diagnos-
tic 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
During operation the actuator will self-adjust according to stroke length of
the valve.
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.
2
1
3
24 V AC/DC (-)
24 V AC/DC (+)
B
A
2
1
3
24 V AC/DC (-)
24 V AC/DC (+)
A
Figure 2 Left = 3-point; Right = 2-point; 1 = Black; 2 = White; 3 = Red; A =
Actuator stem extend; B = Actuator stem retract
LED indication
The actuator has two LED lights with indications according to the table
below.
Green LED fixed light
Actuator moving, under operation
Green LED quick flash
Stroke adaption
Green LED slow flash (Flash twice +
Off 2 sec.)
0 % position
Green LED slow flash (Flash twice +
On 1 sec. + Off 1 sec.)
100 % position
Red LED lights
End of SWs fault / more than 2 faults
Red LED quick flash
One of End SWs fault
Red LED slow flash (Flash twice + Off 2
sec.)
Auto stroke adapt fault
SEZ2F24
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