Controlli MVB2 Series User manual

Valve Actuators MVB
Rev. l 11/06 1 DIM001E
CONTROLLI
16010 SANT’OLCESE Genova - Italy
Tel.: [phone] Fax: [phone]
E-mail: [email protected] Web: www.controlli.org
ISO 9000
CONTROLLI
MOUNTING INSTRUCTIONS
FOR MVB 36-52-56 ONLY
FIG. 2
N3133
The actuator can be mounted in any position for applica-
tions in which the fluid temperature is not higher than 120
°C, otherwise it should be mounted in horizontal position.
It is necessary to leave 10 cm. above and beside it, so as
to operate on the internal parts, on the terminal board for
the electric connections and for assembling-disassembling
operations.
2. VSB-VMB/VSBF-VMBF/VSBPM-VMBPM/
VSBPMF-VMBPMF VALVES ASSEMBLY
(Fig.1)
•Pull and turn counter-clockwise the manual knob 1until
the joint reaches the upper mechanical stop.
•For VSB-VMB/VSBF-VMBF: Pull out the knob 1 and
rotate clockwise (max 1/4 turn) until it enters the first
rest position.
•For VMBPM-VSBPM/VMBPMF-VSBPMF: Pull out the
knob 1and rotate clockwise (max 1/2 turn) until it en-
ters the second rest position.
•Make sure the plug reaches upper seat by lifting the
valve stem.
•If a spacer for high temperatures is needed, insert the
MVBHT accessory 4onto the valve neck.
•Position the actuator on the valve interposing the ring
nut 3between the stem and the mounting bracket.
•Rotate the actuator until the bracket rests on the valve
body.
•Tighten the ring nut 3 using the supplied spanner.
•Keeping the valve stem steady, force counter-clockwise
the lower hexagonal part of joint 2(which acts as a
locknut) until it detaches.
•Then screw clockwise the part which has been detached
so as to tighten it on the rest of the joint, thus blocking
the valve stem.
•Remove the back cover (opposite the knob).
•For MVB52/56 only, make sure that jumper SW2 is in A
position (Fig. 2).
•Supply the actuator between L1 and L2 terminals with Y
terminal disconnected.
•Wait the actuator to reach the lower stroke end.
•Connect the positive of the voltmeter to S2 terminal and
the negative to M.
•Rotate P1 trimmer until the voltmeter indicates 0 V.
FIG. 1
N4161
3. ACTUATOR STROKE CALIBRATION ONLY
FOR STROKES DIFFERENT FROM 16.5 mm
1. INSTALLATION

Automatic control systems for:
air conditioning/heating/industrial thermal process
CONTROLLI
Rev. l 11/06 2 DIM001E
4. ELECTRICAL CONNECTIONS
Perform the electrical connections according to the following diagrams and in compliance with existing rules.
(1) With voltage between N (Common) and Y1 (phase from controller contact): the actuator joint moves upwards. With
voltage between N and Y2 the joint moves downwards. Without voltage the actuator remains in the position gained.
(2) For MVB36: connect the controller potentiometer cursor (165 Ω) to Y terminal, one end to M and the other to V+
terminal.
(3) When SW2 jumper is in C position (See Fig. 2) and signal increases, the joint moves downwards.
(4) Connect the indicator with input current to S3 (or S2) and S1 terminals. Connect the indicator with input voltage to S3
(or S2) and M terminals. The extreme left voltage (current) value corresponds to joint up.
TERMINAL BOARD
- MVB5.
- MVB36 LEGEND
L1 Phase
L2=M=Common
MCommon
V+ 15 V- output (2)
YControl signal (3)
S3 10...0V- or 200...0 µA
S2 0...10V- or 0...200 µA(4)
S1 Analogue common
24 V~ +10%
power supply
(*) Internally connected
TERMINAL BOARD
- MVB2. (230 V~)
- MVB46 (24 V~) LEGEND
Y1 Joint up
NCommon Control (1)
Y2 Joint down
N3009
NOTE: For MVB actuators are available the following accessories: MVBPA2 (card with 1Kohm auxiliary
potentiometer), D36 (micro auxiliary contact with adjustable cam), MVBHT (spacer for high tem-
peratures), 244 (stem heater), MVBD (AUT/MAN microswitch - Only factory-mounted) and MVBC
(Rainproof protection).
For further details make reference to the relevant mounting instructions (DIM004 and DIM023 only for
244).
P.C. board with an auxiliary potentiometer (MVBPA2) available only on request when ordering an
actuator and factory-mounted.
The performances stated on this sheet can be modified without any prior notice due to design improvements.