INSTRUCTION
EN
RVA25-24
i
Read this instruction before installation
and wiring of the product
Valve actuator for 3-point control
RVA25-24 is a valve actuator for control of GTRS125-215 and
GTRS150-310, as well as GTVS125-215 and GTVS150-310. The
actuator can be operated manually.
Technical data
Supply voltage
24 V AC ±15%, 50/60 Hz
Control signal
3-point
Power consumption
Max. 12 W
Stroke
10...52 mm (40 mm fixed stroke)
Stroke time
3 s/mm
Force
2500 N
Ambient temperature
0...50°C
Storage temperature
-40...80°C
Ambient humidity
10...90% RH
Dimensions (WxHxD)
200 x 300 x 135 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
Wiring
G1 closed = Actuator spindle extending
G2 closed = Actuator spindle retracting
Stroke and endpoint calibration
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
so that any control signal that would force the actuator to run beyond the
endpoints is ignored.
RVA25-24
If the unit has been configured for free stroke (DIP-switch 2 in position
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 any control signal that would force the actuator to run beyond the
endpoints is ignored.
Manual override
85º
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-
G2
G1
wise will retract it.
3
2
1
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 two
table below for setting the DIP-switches. A change of the setting will
take effect immediately.
24 V AC
SW1
SW2
LEDs
The actuator has two LEDs with indications according to the table
below.
DIP-switches for setting different functions. Follow the
1 (On)
0 (Off)
(Reserved)
Free stroke (auto adaptation,
Fixed stroke (40 mm)
10...52 mm) (factory setting)
1