background image

INSTRUCTION

 

i

Read this instruction before installation 

and wiring of the product

RVA5-24A

Valve actuator for 0(2)...10 V control

RVA5-24A is a valve actuator designed for control of BTV and BTR 

valves. The actuator has automatic self stroke adjustment and can be 

operated manually.

Technical data

Supply voltage 

 

24 V AC ±15%, 50/60 Hz 

Control signal 

 

0(2)...10 V DC 

Power consumption 

Max. 4.5 W 

Stroke 

 

10...30 mm (20 mm fixed stroke)

 

Stroke time 

 

3 s/mm 

Force 

 

500 N 

Ambient temperature 

0...50°C 

Storage temperature 

-40...80°C 

Ambient humidity   

10...90% RH 

Dimensions 

 

150 x 250 x 85 mm 

Protection class   

IP54

Installation

If the valve stem adaptor and valve throat adaptor are not already 

mounted on the valve, mount them. Pull the valve stem out as far as 

possible. 

Remove the locking bolt (U-bolt) from the actuator yoke. Insert the valve 

stem into the yoke and make sure that the stem adaptor engages the hole 

in the angled iron of the actuator drive spindle.

The groove in the valve throat adaptor must be made to line up with the 

U-bolt mounting holes on the actuator. If the spindle needs moving in or 

out for this to happen, depress the central part of the manual button and 

turn it clockwise for the actuator spindle to extend, and anti-clockwise for it 

to retract (see Manual override). When the valve is in the correct position, 

insert the U-bolt. Tighten the bolt nuts until the valve is firmly gripped. 

Disassembly in reverse order.

Mounting positions

85º

85º

Wiring

24 V AC 

1

2

3

4

5

1

2

3

4

5

6

Y

U

B

M

O

ve

rr

id

in

pu

t

Y    0(2)...10 V DC

Control signal from 

controller 

U    0...10 V DC

Measuring voltage 

for position indication 

7

8

9

Automatic stroke and endpoint calibration

On each power-up and after manual manoeuvring, automatic stroke and 

endpoint calibration will take place. If the unit has been configured for 
fixed stroke (DIP-switch 2 in position Off) the actuator will first go to the 

fully closed end position. The position will be stored in memory and the 
stroke will be calculated from this point.

If the unit has been configured for free stroke (DIP-switch 2 in posi

-

tion On) the actuator will first go to both endpoints of the stroke. The 

points will be stored in memory and the control will be calibrated so 
that the full stroke will be covered by the set input signal.

Override

Activation of the override input will force the actuator spindle to go to 

its lowest position or its highest position, depending on the setting of 
DIP-switch SW1. SW1 also affects the direction of movement.

Manual override

To manually set the valve position, first depress the central part of 
the button until it clicks and remains depressed (1 in the figure). This 

disengages the gears and also cuts the power to the motor. Then the 
valve position can be changed manually by turning the button (2 in 

the figure). Clockwise rotation will extend the drive rod and anti-clock

-

wise will retract it. 

To reconnect power, set the button so the flats are in line with the 

cutout in the edge of the cover, Auto position. Then press on the outer 

parts of the button (3 in the figure). The central depressed part will 

pop out re-engaging the gears and reconnecting the power.
Note: After any manual operation the actuator will always run through 
a full stroke and endpoint calibration.

DIP-switches

There are seven DIP-switches for setting different functions. Follow 

the table below for setting the DIP-switches. 

Changes of the setting for SW2 will take effect immediately. Changes 

of the other positions will be ignored during operation. New settings 

will be valid only after the next power-on. 

1 (On)

0 (Off)

SW1

Spindle up on closed 
contact

Spindle down on closed 
contact (FS=factory setting)

RVA5-24A

6973H

 

DEC 09

EN

1

Summary of Contents for RVA5-24A

Page 1: ...bration will take place If the unit has been configured for fixed stroke DIP switch 2 in position Off the actuator will first go to the fully closed end position The position will be stored in memory...

Page 2: ...rkers can easily be moved in order to show when the actuator is closed open for heating cooling For heating valves the red marker should be in the completely open valve position and the blue marker in...

Page 3: ...30 mm FI Fast slagl ngd 20 mm SW3 Linj r Likprocentig FI SW4 Y 2 10 V DC Y 0 10 V DC FI SW5 Omv nd r relse Direkt r relse FI SW6 Y signalsplit SW7 deaktiverad FI SW7 5 6 10 V 0 100 0 2 5 6 V 0 100 FI...

Page 4: ...edientaste und drehen diese im Uhrzeigersinn so dass sich die Stellantriebsspindel nach oben bewegt und gegen den Uhrzeigersinn so dass sie sich nach unten bewegt siehe Hand bedienung Sobald das Venti...

Page 5: ...10 V DC eingestellt werden Das Stellsignal wird dann in 2 10 V DC umgewandelt Direkter Lauf Invertierter Lauf SW5 Im direktem Lauf f hrt der Stellantrieb die Spindel bei steigendem Stell signal herun...

Page 6: ...DIP n 2 sur la position OFF l actionneur se mettra par d faut dans la position fin de course ferm e La position de la tige est alors m moris e et la course est calcul e en fonction de ce point de rep...

Page 7: ...rminer la plage de fonctionne ment de l actionneur Voyants d indication L actionneur est quip de deux voyants LED dont la signification est indiqu e dans le tableau ci dessous Indicateur Voyant vert f...

Reviews: