Controlli MVB2 Series Manual de usuario

Valve Actuators MVB

Rev. l 11/06 1 DIM001E

CONTROLLI

16010 SANT’OLCESE Genova - Italy

Tel.: +39 01073061 Fax: +39 0107306870/871

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.

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