Datasheet Content
7 804
SQN70.../SQN71... SQN74.../SQN75...
Actuators SQN7...
Reversible electromotoric actuators for air dampers and valves of oil or gas
burners of small to medium capacity.
The SQN7... and this Data Sheet are intended for use by OEMs which integrate
the actuators in their products!
Use and features
The SQN7... actuators are designed for driving gas or air dampers of oil or gas burners
of small to medium capacity, for load-dependent control of the fuel and combustion air
volume:
- In connection with P-PI or PID controllers, such as the RWF40...
- Directly via the different types of burner controls, such as LFL..., LME..., LMG...,
LMO..., LOA...
- In connection with 1- or 2-wire control or 3-position controllers
All types of actuators - Impact-proof and heat-resistant plastic housings
feature: - Screw terminals for the electrical connections
- Maintenance-free gear train, which can be disengaged
- Internal position indication
- Easy-to-adjust end and auxiliary switches for adjusting the switching points
- Integrated electronic circuits
Holding torque: - SQN70.../SQN71.../SQN75... 0.7...1.3 Nm
- SQN74... 0.7 Nm
Running time: - SQN70.../SQN71.../SQN75... 4...30 s
- SQN74... 4s
Direction of rotation: - SQN70.../SQN74... counterclockwise
- SQN71.../SQN75... clockwise
SQN74.../SQN75... - Fixing holes and cable entries
- Equivalent to actuators of the same category made by Conectron and Berger
CC1N7804en
Building Technologies Division
13.05.2016
Warning notes
To avoid injury to persons, damage to property or the environment, the following
warning notes must be observed!
Do not interfere with or modify the actuators!
All activities (mounting, installation and service work, etc.) must be performed by
qualified staff
Before making any wiring changes in the connection area, completely isolate the
plant from mains supply (all-polar disconnection). Ensure that the plant cannot be
inadvertently switched on again and that it is indeed dead. If not observed, there is
a risk of electric shock hazard
Ensure protection against electric shock hazard by providing adequate protection
for the connection terminals and by securing the housing cover
Each time work has been carried out (mounting, installation, service work, etc.),
check to ensure that wiring is in an orderly state
Fall or shock can adversely affect the safety functions. Such actuators must not be
put into operation, even if they do not exhibit any damage
Mounting notes
Ensure that the relevant national safety regulations are complied with
Standards and certificates
Applied directives:
Low-voltage directive 2014/35/EC
Electromagnetic compatibility EMC (immunity) 2014/30/EC
Compliance with the regulations of the applied directives is verified by the adherence to
the following standards / regulations:
Automatic electrical controls for household and similar use DIN EN 60730-1
Part 1: General requirements
Automatic electrical controls for household and similar use DIN EN 60730-2-14
Part 2-14: Particular requirements for electric actuators
The relevant valid edition of the standards can be found in the declaration of
conformity!
EAC Conformity mark (Eurasian Conformity mark)
ISO 9001:2008
ISO 14001:2004
OHSAS 18001:2007
Only valid for
SQN70.xxxRxx
SQN71.xxxRxx
Disposal notes
The actuators contain electrical and electronic components and must not be disposed
of together with household waste.
Local and currently valid legislation must be observed.
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Building Technologies Division CC1N7804en
13.05.2016
Mechanical design
Housing - Made of impact-proof and heat-resistant plastic
- The housing accommodates:
– The reversible synchronous motor with gear train, which can be disengaged
– The camshaft of the control section
– The relays, depending on the type of actuator
– The switches, connected to the terminals via the printed circuit board
Color: SQN70.../SQN71...: Gear train housing dark-grey, cover light-grey
SQN74.../SQN75...: Gear train housing black, cover black
Drive motor - Reversible and locking-proof synchronous motor
Coupling - Drive shaft can be manually disengaged from the gear train
and motor (by pressing pin K)
- Automatic reengagement
Adjustment of - By means of adjustable cams
switching points - Scales beside the cams indicate the angle of the switching point
- Assignment of cams to the end and auxiliary switches is color-coded (see
Connection diagrams)
- Some of the cam feature fine adjustment; they can be adjusted with a standard
screwdriver
- The other cams can be adjusted manually or with the enclosed hook-spanner or a
similar tool
Position indication - Internally: Scale at the beginning of the camshaft on the gear train side
Electrical connections - See Technical data
Gear train - Maintenance-free
Drive shaft - Made of black-finished steel
- Ready fitted to the front of the gear train
- Different versions available
Mounting and fixing - Front of the gear train is used as the mounting surface
- Actuator is secured via through-holes
Special versions for fitting potentiometer
Fitting a Certain types of actuators are supplied ready prepared for fitting a potentiometer.
potentiometer These actuators differ from the basic type only in that the cover is higher.
They are prepared for housing the potentiometer. Accessories are not required.
With these types of actuators, the third digit after the dot in the actuator's type reference
is an «8».
Example:
SQN7x.xx8Axx version for fitting a potentiometer, mounted higher cover AGA34
With the other types of actuators which are suited for fitting a potentiometer, the higher
cover AGA34 must be ordered (see Ordering).
The required type of potentiometer is to be ordered as a separate item (see Ordering).
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Building Technologies Division CC1N7804en
13.05.2016
Type summary (other types of actuators available on request)
Diagram Drive Running Nominal Holding AS Relay Pot. Length of Types for mains voltage/ SQN7... replaces
shaft time torque torque 7) 9) 10) housing ¹) mains frequency
¹) 2) 6) AC 230 V 4) AC 115 V 3)
for 90° (max.) +10% -15% +10% -15%
No. No. s Nm Nm pcs. pcs. mm 50...60 Hz 50...60 Hz type
Actuators SQN70…/counterclockwise rotation 8)
2 0 4 1.5 0.7 2 2 --- 117 SQN70.224A20 --- ---
4 0 4 1.5 0.7 2 3 --- 117 SQN70.244A20 --- SQN30.121A2700
5 0 4 1,5 0,7 2 3 --- 117 SQN70.254A20 --- ---
6 0 4 1.5 0.7 2 --- 10) 80 SQN70.264A20 --- SQN30.101A2700
9 0 4 1.5 0.7 2 1 --- 117 SQN70.294A20 --- SQN30.111A2700
2 0 6 1.5 0.7 2 2 --- 117 SQN70.324A20…
