Controlli MDL Series User manual

MDL
Damper Actuators
1st Issue rev. l 01/12 1 DBL021e
ISO 9001
CONTROLLI
16010 SANT’OLCESE Genova - Italy
Tel.: [phone] Fax: [phone]
E-mail: [email protected] Web: www.controlli.eu
(1) Factory setting.
(2) The values in brackets indicate the starting torque.
(3) Models that may be set for voltage or current proportional
control, using the options described further.
(4) Fixed-rangeproportionalmodels.Thisversionisphysically
obtained by including the MDLS5 module in the MDL3.
series actuator.
APPLICATIONS AND USE
MDL actuators are used in civil and industrial systems for driv-
ing dampers and other devices, which require the control of an
angular position within a max. angle of 160° (e.g. for adjusting
the flame in liquid or gas burners).
MDL actuators are equipped with a double shaft output; their
size is such that they are interchangeable with other qualified
manufacturers’ actuators. Using the appropriate bracket, they
are also interchangeable with Controlli SL old-model actuators.
MDL actuators can be installed in any position.
Each actuator is available in three basic model types:
− Floating (3p)
− Proportional potentiometric (pot.)
− Proportional voltage or current, with fixed ranges (prop.)
By means of easily mountable additional modules, the models
withproportionalpotentiometriccontrolmaybevoltageorcurrent
controlled in the following versions:
− Selectable fixed ranges; see MDLS5 option
− Variable range start and slope, see MDLV5 option
OPERATION
All models are equipped with a permanent magnet synchronous
motor, which makes stroke time independent from load, and
increases reliability, avoiding the use of mechanical brake. The
stroke angle of the actuator can be adjusted easily by means of
graduated cam disks fitted internally. On the outside is located
a disk that indicates the angular position of the shaft.
All24V~modelshaveanelectricaldeviceforthemanualcontrol
in both directions of the actuator in case of absence of control
signal or of failure of the electronic card.
Theelectricmanual control can also be remote, according to the
wiring diagram illustrated in fig. 5.
Itis available an internal mechanism forunlockingthemainshaft;
this mechanism permits the shaft to rotate freely in both direc-
tions, simplifying assembly operations and cam calibration.
In the models with floating control is available, as an optional
accessory,an auxiliarypotentiometer(itscard ispresetfor mount-
ing 1 additional potentiometer, on request). In the models with
proportionalcontrol it is alsoavailableanoutput signal depending
on the angular position of the shaft, and a device for reversing
the direction of rotation.
MANUFACTURING CHARACTERISTICS
The actuator does not require any maintenance. It consists of
an aluminium die-cast case and upper cover in thermoplastic
material.
Holes for installation are provided both on the base and on the
front.
Thereductiongearhasoutput shaft supported by self-lubricating
bushings. The electronic card is fitted on top, it can be reached
by removing the cover, also providing an easy access to the
terminals for wiring connections.
The rotation directions are defined as “clockwise” or “coun-
terclockwise”, in respect with the position indicator side.

1st Issue rev. l 01/12 2 DBL021e
TECHNICAL CHARACTERISTICS
Power supply 24-110-230 V~ +10.%
Consumption 11 VA (17 VA for 230 V~)
Dimensioning 15 VA (20 VA for 230 V~)
Frequency 50 ... 60Hz
Rotation angle MDL3./5.:
preset at 90°
selectable for 160°
adjustable between 55 and 160°
MDL2./4./6.:
preset at 90°
adjustable between 0 and 160°
Stroke time Seeavailablemodels(valuesreferred
to 50Hz; if frequency is 60Hz, the
stroke time is lower than 20%)
Nominal torque See available models
Starting torque See available models
Radial force on
shaft outputs 500 N max.
Temperature
working -15T 55
storage -50T 60
Ambient humidity R class (DIN 40040)
Terminal board (*) screw-type, for 1.5 to 2.5 mm2
wires
Two cable sleeves Rubber, with membrane punchable
on D=16 mm hole; to be replaced by
PG 13.5 compression glands
Protection degree IP 55 DIN 40050 (IEC 529)
Forenvironmentwithnormalpollution
according to IEC730-1 (93)/6.5.3
Installation position any
Weight 2.6 kg
Control signal
3 position control 2 SPST contact
Proportional control
- potentiometric 165 ohm
- with MDLS5 module
in voltage 4…7V/6...9V/8...11V/0...10V
in current 4…20 mA
- with MDLV5 module
variable range start 0…15 V or mA
variable range width 3…16 V or mA
Remark: for all models:
voltage ranges 0.1 mA max
current ranges 250 ohm
Indication outputs (for MDL3./5. only)
voltage 0…10 V- (2 mA max.)
10…0 V- (2 mA max.)
current 0…200 μa
The output signal is perfectly calibrated for a 90° stroke.
For 160° stroke, a deviation of the output signal at the stroke
end (negative tolerance) may occur.
Product in compliance with EMC89/336 directive according to
the below-mentioned standards:
- EN50081-1 for emission - EN50082-1 for immunity
POSSIBLE COMBINATIONS AND CONNECTIONS
All actuator models can be connected to any controller hav-
ing control signal corresponding to the indications given in the
“Technical Characteristics” paragraph. In particular, they can be
connected to CONTROLLI 500 Line, DIGITROLL 4000, 7000,
Line 200 and 300 controllers.
ACCESSORIES AND OPTIONS
Model Description
DMDL Two auxiliary microswitches (SPDT 10(3)A 250 V)
adjustable on the whole stroke. Micro-disconnection
type 1B according to IEC730-1(93)/6.4.3.2
MDLA1 Damper operating lever (adjustable arm 43…74
mm)
MDLA2 Bracket for interchangeability between MDL and SL
MDLPA2 for MDL2 electronic cards with
MDLPA4 for MDL4 1 KOhm auxiliary
MDLPA6 for MDL6 potentiometer (1)
(1) On request it is possible to assemble 1 potentiometer.
MDLS5 Module for current control signal 4...20mA or volt-
age control signal, with selectable fixed ranges
4...7V/6...9V/8...11V/0...10V.
MDLV5 Module for current or voltage control signal, variable
as regards the start and the slope of the range.
YS7 Dampercontrol device (in additiontotheMDLA1 lever)
consistingof:articulatedjoints,steelconnectingrod ∅
8 mm - length 500 mm, lever for damper shaft, ∅12,
adjustable (43...74 mm).
INSTALLATION AND MOUNTING
The actuator can be installed in any position. Electrical connec-
tions are carried out by removing the cover and must conform
to existing rules.
The actuator is set for a 90° angular stroke. To set different
strokes it is necessary to adjust the cams using the supplied
spanner, inserting it into the slot near the aux. cams.
OnMDL3./5.modelsthere is a jumper to enable stroke selection
(90°/160°/VAR). Positions 90° and 160° refer to fixed strokes,
while by selecting VAR it is possible to set variable strokes (be-
tween a minimum of 55° and a maximum of 160°) using the P1
trimmer (see fig. 1).
The actuator is supplied with the shaft positioned on the 0 of the
externalpositionindicator(see fig. 2).To simplify installation and
cam calibration at the angular ends:
− using a screwdriver, unlock the main shaft, by rotating 180°
counterclockwise the loosening pivot located on the board
− put the main shaft in the desired position by operating on the
square extremity
− position the cams at due angulation
− repositionthemain shaft on 0 of the outside position indicator
and lock it by turning clockwise the pivot.
WARNING: The shaft unlocking mechanism must never
be operated under load.
On all 24 V~ models, in order to control manually the actuator,
move CM1 changeover switch to MANual position and act on
SW7 switch to control the actuator in both directions.
In the MDL3./5. models, to reverse direction in respect with
control operate on jumper SW3.
To obtain a remote manual control, besides moving the CM1
changeover switch in MAN position, it is necessary to use the
additional terminals 1, 2 and 3, carrying out the wiring accord-
ing to fig. 5. As regards the operations to be performed during
assembly, see the detailed description given in the mounting
instructions supplied in the package.
MDLS5 Option
TheMDLS5moduleispreset for 0...10 V control signal.Toselect
different ranges, move the SW1 jumper from the preset position
to the desired one (see fig. 3).
For the 4...20 mArange it is also necessary to position on SW1
the jumper set in JMP position.

1st Issue rev. l 01/12 3 DBL021e
ELECTRONIC CARD
only for MDL3./5.
MDLS5
FIG.3
N3028F1
MDLV5
FIG.4
N3030
FIG. 2
FIG.5
N3027
MDLV5 Option
The MDLV5 option is preset for voltage control signal.
To select the current range it is necessary to move the two
jumpers preset in JMP position to SW1 position and to act on
P2 and P3 trimmers to define the start and slope of the required
range (see fig. 4).
OPTIONAL MODULES
LIMIT OF SHAFTANGULAR ROTATION
(stroke 90° = factory setting)
Power side view Position indicator side view
N3029F2 N3029F1
REMOTE MANUAL CONTROL WIRING
DIAGRAM (MDL3./5.)
LEGEND
1 AUTOMATIC
2 CLOCKWISE
3 STOP
4 COUNTER-CLOCK-
WISE
Note: CM1electronic board changeoverswitchhas to bemoved
on MAN position.
FIG. 1
N3028F1

Automatic control systems for:
air conditioning/heating/industrial thermal process.
1st Issue rev. l 01/12 4 DBL021e
ISO 9001
OVERALL DIMENSIONS (mm)
MDLACTUATOR DAMPER OPERATING LEVER (MDLA1)
DAMPER CONTROL DEVICE (YS7)
L1 Power supply
L2
M Common
V+ Output +15 V-
Y Control signal (2)
S1 Analogical common
S2 0...10V or 0...200 uA
S3 10..0V- or 200..0 uA
(1)
(3)
N3009
TERMINAL BOARDS
MDL 2./4./6. (4) LEGEND MDL3./5. LEGEND
(1) For the MDL3. model, connect the central of the controller’s potentiometer (165 ohm) to Y terminal, a side connector to M
terminal and the other to the V+ terminal.
(2) With jumper SW3 in A position, looking at the actuator from the power side, for increasing control signal, the shaft moves
clockwise.
(3) Connect the eventual indicator with current input to terminals S3 (or S2) and S1 (max 200 uA).
Connect the eventual indicator with voltage input to terminal S3 (or S2) and M (max 2 mA).
The value of voltage (current) on extreme left corresponds to shaft in position 0°.
(4) The MDL2./4./6. actuator is supplied with L1 and L2 jumpered.
The power supply to the actuator is given by the controller through the control signal (between N-Y1 for clockwise rotation or
N-Y2 for counter-clockwise rotation).
Manual control: available only on MDL4 actuator. To enable such control, remove the jumper between L1 and L2 and con-
nect them to power supply. In this case the controller signal must come from potential-free contacts (dry contacts) connected
between N-Y1 or N-Y2.
(5) Internally connected.
N4031
N4030
L1 Power supply
L2
Y1 Clockwise
N Common
Y2 Counter-clockwise
W1
W2 Central
W3
Control
Potentiometer
The performances stated in this sheet can be modified without any prior notice due to design improvements