16
3. TECHNICAL INFORMATION ABOUT FUNCTION
The chain actuator opens and closes the window using a double row steel chain inside a sheath.
Movement is generated using electrical energy that powers a reduction motor controlled by a
functional electrical device. Windows can be programmed to open and the device allows chain
opening at 240 and 360 mm. When the window returns to start position, that is during closure, the
stroke-end uses an electronic self regulating process with absorption of energy and no regulation
is therefore required.
The actuator is produced by the factory with the stroke-end for return set at 1 cm (out by
1 cm). This allows the actuator to be assembled without electrical energy powering movement and
means that the window remains closed after assembly. The joint between actuator and support
brackets is quick, requires no fixing screws (
NEKOS
patent) and allows the actuator to rotate to
follow the track of the chain even on shorter windows.
4. MANUFACTURE AND APPLICABLE STANDARDS OR REGULATIONS
INTENDED USE
The chain operated series
KATO 253
actuator has been designed and
manufactured to open and close top hung windows, bottom hung windows, dormer
windows, light domes and skylights. It has been specifically designed for ventilation and
climate control; any other use is strongly discouraged, with the supplier of the entire
system in any case retaining sole liability.
The actuator is manufactured in accordance with the EC Directives and Regulations listed
in the attached Declaration of Incorporation and Conformity
.
Electrical connections must conform to regulations in force for the design and set up of
electrical equipment.
To ensure efficient separation from the grid, an approved type of bipolar “dead-man”
switch should be used. An omnipolar general power switch with minimum distance of 3
mm between contacts should be installed upstream of the control line.
The actuator is packaged in cardboard boxing and each package contains:
Electrical actuator with either 100-240V~ 50/60Hz or 24V
with electrical cable directly
connected to the machine.
Drilling template.
Standard support brackets (A).
Bracket for bottom hung window (C).
Bracket for top hung window (D).
Instructions manual.
5. TECHNICAL DATA
Model
KATO 253/230V
KATO 253/24V
Force exerted by thrust and traction
250 N
Strokes
(can be selected at any time)
240, 360 mm
Power supply voltage
100-240V~ 50/60Hz
24V
Rated absorbed current
0,42-0,21 A
0,78 A
Power absorbed at nominal load
~ 23-20 W
~ 19 W
No load speed
15 mm/s
13,3 mm/s
Duration of no load stroke
(360 mm)
24 s
27 s
Double electrical insulation
YES
Low tension
Type of service
S
2
of 3 min
Operating temperature
- 5 + 65 ºC
Protection index for electrical devices
IP30
Adjustment of connection to window frame
Automatic definition of position
Parallel powering of two or more motors
YES
(max 30 actuators)
17
Synchronised function
Not foreseen
Holding nominal force
(it can vary according to
the chosen brackets)
1500N
Stroke-end at opening
At absorption of power
Stroke-end at closing
At absorption of power
Length of power cable
1 m
Dimensions
356x56x33,5 mm
Weight
0,83 Kg
0,80 Kg
The data indicated in these figures is not binding and is subject to variation without notification.
6. ID PLATE AND MARKING DATA
The Machine Directive classifies actuators as “partly completed machinery” and they are supplied
with a Declaration of Incorporation, attached to this booklet; with regard to the electrical side, they
bear
marking and come under the LVD and CEM Directives and the other Regulations listed in
the attached Declaration of Conformity.
With this marking, the actuators can be sold and used throughout the European Union with no
further requirements. The plate data is displayed on an adhesive label placed on the outside of the
container, printed in black on a grey background.
7. ELECTRICAL POWER SUPPLY
The
KATO 253
actuator is commercially available in two versions identified according to electrical
specifications:
1.
KATO 253 230V~
: runs on grid tension of 100-240V~, 50/60Hz, with a three wire cable
(
L
IGHT
B
LUE
, common neutral;
B
LACK
, phase open;
B
ROWN
, phase closed)
.
2.
KATO 253 24V
: runs on 24V
, with two wire cable,
LIGHT BLUE
, connected to the +
(positive) opens;
Brown
, connected to the + (positive) closes
.
24V
low voltage actuators can be powered using a station with emergency battery or security
power supply unit
with an output voltage of 24V
(min. 20,4V, max. 28,8V)
.
7.1. Selection of power cable section
For 24V
power supply cable section must be checked and calculated according to cable length.
The following table indicates maximum cable lengths for connection to motors.
Cable section
Maximum cable length
4.00 mm²
~ 270 m
2.50 mm²
~ 170 m
1.50 mm²
~ 100 m
0.75 mm²
~ 50 m
0.50 mm²
~ 35 m
8. INSTRUCTIONS FOR ASSEMBLY
These indications are for specialised technical personnel and basic work and safety
techniques are not indicated.
All preparatory, assembly and electrical connection operations must be performed by specialised
technical personnel to guarantee optimal function and service of the actuator.
Check that the following fundamental conditions have been met:
Before installing the actuator, check that the moving parts of the window on which it is to
be installed are in perfect working condition and that they open and close properly and
are well balanced (where applicable).
