Assembly, start-up and operation of this device may only be performed by
trained and experienced personnel familiar with the product.
According to these mounting and operating instructions, trained personnel
refers to individuals who are able to judge the work they are assigned to
and recognize possible hazards due to their specialized training, their
knowledge and experience as well as their knowledge of the applicable
standards.
Any hazards which could be caused in the connected valve by the process
medium, operating pressure or moving parts are to be prevented by means
of the appropriate measures.
Proper transportation and storage are assumed.
The actuators has been designed for use in electrical power installations.
For wiring and maintenance, you are required to observe the relevant safety
regulations. The actuator must be protected against unintentional
reconnection of the power supply.
Note:
Actuators with a CE marking fulfill the requirements of the Directives
94/9/EC and 89/336/EEC.
The Declaration of Conformity is available on request.
4 EB 5757-7 EN
Design and principle of operation
1Design and principle of
operation
The Type 5757-7 consists of a digital con
troller integrated into the housing of an elec
tric actuator.
The combination is especially designed for
heating applications as well as for fixed set
point control of heating systems in small to
medium-sized buildings. It is particularly
suitable for mounting to SAMSON
Type 3222, Type 3222 N, Type 2488 and
Type 3267 Valves (DN 15 to 25) and to
special versions of Type 3226 and
Type 3260 Valves.
The digital controller is connected to a flow
sensor on the input side, which can be optionally upgraded by a return flow, outdoor
or room sensor.
In addition to the Pt 1000 input, the digital
controller has a potentiometer input (1000
to 1100Ωor 1000 to 2000Ω) to measure
the flow temperature. This input influences
the heating characteristic in the case of outdoor temperature compensated control and
the room temperature set point in the case of
fixed set point control with room tempera
ture influence.
Heating characteristic and set point parame
ters can be changed over the TROVIS-VIEW
Operator Interface.
The output signal of the integrated digital
controller is applied as a three-point step
ping signal to the synchronous motor of the
actuator. The signal is transferred over the
connected gear to the actuator stem (3) and
used as the positioning force.
The motor is switched off by torque-depend
ent switches when an end position is
reached or in case the motor is overloaded.
-
-
-
The actuator is mounted onto the valve using
a coupling nut (4).
When the actuator stem extends, the valve is
closed, opposing the force of the valve
spring (7). When the actuator stem retracts,
the valve is opened as the plug stem (6) fol
lows the motion of the return spring.
The valve can be moved to any position
when the power supply is disconnected by
the handwheel (2). Travel and direction of
action can be read off the travel indicator
(5) on the side of the actuator housing.
Stem retracts
Stem extends
-
1 Controller/actuator
1.1 Connecting lead
2 Handwheel (only to
be used when power
is disconnected)
3 Actuator stem
-
Fig. 2 · Functional diagram
4 Coupling nut
5 Travel indicator
6 Plug stem
7 Valve spring
8 Cover, serial
interface connection
-
5
EB 5757-7 EN 5
Design and principle of operation
1.1Accessories
Heating applications, see section 5
Type 5267-2 Pt 1000 Contact Sensor
4
Permissible temperatures:
Medium–20 to 120 °C
Ambient–20 to 120 °C
Degree of protection IP 42
Type 5257-2 Pt 1000 Room Sensor
4
with potentiometer (remote adjuster)
Permissible temperatures:
Medium–35 to 70 °C
Ambient–35 to 70 °C
Degree of protection IP 20
Type 5257-7 Room Panel with
4
potentiometer and mode selector switch
Permissible temperatures:
Medium–20 to 60 °C
Ambient–20 to 60 °C
Degree of protection IP 30
Type 5227-2 Pt 1000 Outdoor Sensor
4
Permissible temperatures:
Medium–35 to 85 °C
Ambient–35 to 85 °C
Degree of protection IP 44
Communication, refer to section 6
TROVIS-VIEW Configuration and Opera
4
tor Interface (6661-1066) for
Type 5757-7 Controller with Electric Actu
ator
Hardware package
4
Accessories for direct and indirect data
transmission (including a memory pen,
connecting cable and modular adapter),
order no. 1400-7704
Memory pen
4
Indirect data transmission,
order no. 1400-7697
1.2Technical data
Type 5757-7 Controller with Electric Actuator
Temperature sensorMax. 3 x Pt 1000
Setting range0 to 150 °C
Potentiometer input1000 to 1100Ωor
Binary output230 V/50 Hz/1 A
Rated travel6 mm
Transit time for
rated travel
Nominal thrust300 N
Supply voltage230 V (±10 %) / 50 Hz
Power consumptionApprox. 3 VA
Permissible temperatures
Ambient0 to 50 °C
Storage–20 to 70 °C
Degree of protectionIP 42
Mounting positionAny, but not suspended
Noise immunityEN 61000-6-2
-
Noise emissionEN 61000-6-3
-
WeightApprox. 0.7 kg
1000 to 2000
Circulation pump or
external heat demand
20 s
Ω
6 EB 5757-7 EN
2Connection to the valve
The actuator has a force-locking connection
to the valve in de-energized state.
Turn the handwheel (2) counterclockwise
4
to retract the actuator stem as far as it
will go.
Place the actuator on the valve connec
Any mounting position may be used, how
ever, may not be installed in a suspended
position.
-
2 Handwheel
3 Actuator stem
4 Coupling nut
Fig. 3 · Connecting actuator and valve
EB 5757-7 EN 7
Electrical connection
3Electrical connection
When installing electric lines, you
are required to observe the regula
tions governing electrical power
plant installation according to
DIN VDE 0100 as well as the regu
lations of your local power supply
company.
Use a suitable power supply which
guarantees that no dangerous volt
ages reach the device in standard
operation or in case of a fault in the
system or any other system parts.
The controller with electric actuator requires
a Pt 1000 temperature sensor (e.g. Type
5267-2) to be connected to measure the
flow temperature.
Depending on the control task, an outdoor
sensor (e.g. Type 5227-2) or a room sensor
(e.g. Type 5257-2) or a room panel
(Type 5257-7 only) can be connected. Combining one of these sensors with a return
flow sensor (e.g. Type 5267-2) is usually
possible.
Additionally, the controller with electric ac
tuator has a potentiometer input 1000 to
1100Ω(e.g. Type 5257-7) or 1000 to
2000Ω(e.g. Type 5257-2). This input is
used to correct the room set point (±5 K) in
case of fixed set point control with room
temperature influence (see section 5.2). On
using an outdoor sensor, it can change the
adjusted heating characteristic (see sec
tion 5.1).
The non-floating pump output can alterna
tively be used as an binary output for an ex
ternal request for heat demand.
-
-
-
-
-
-
The connected sensors are monitored for
line breakages.
A fault in the line of a sensor is indicated by
the red LED blinking slowly.
Caution!
Connect the actuator to the electrical
network only after the power supply
has first been switched off. Make
sure the power cannot be switched
on unintentionally!
The pump output L’ is non-floating
(230 V~).
Perform the electrical connection de-
4
pending on the heating application according to one of the following wiring diagrams (Figs. 4 and 5).
As soon as the actuator is connected to
the power supply, the initialization procedure starts.
The actuator stem extends (with operating direction selected for globe valves)
and the red and yellow LEDs are illumi
nated located under the cover on top of
the actuator.
As soon as the actuator stem has
reached the final position, the red LED is
turned off. The yellow LED remains illu
minated and indicates that the controller
with electric actuator is ready for opera
tion.
-
-
-
-
8 EB 5757-7 EN
Electrical connection
VS
Pt 1000
Pt 1000
ASRüS
Pt 1000
100/
1000 Ω
1000 Ω
230 V,
50 Hz
346521LL´N
oryerdbrblkgrbrblblk
Application with flow, return flow, and outdoor sensors as well as potentiometer
to adjust the set point
e.g. Type 5257-2 with remote adjuster
VS
Pt 1000
Pt 1000
ASRüS
Pt 1000
230 V,
50 Hz
346521LL´N
Caution!
Live wires
oryerdbrblkgrbrblblk
Application with flow, return flow, and outdoor sensors as well as binary input
to switch between operating modes
ororange
yeyellow
rdred
brbrown
blk black
grgreen
Fig. 4 · Wiring diagramsNote:
Caution!
Live wires
brbrown
blblue
blk black
Terminals at point of installation, not included in scope of delivery
EB 5757-7 EN 9
Electrical connection
VS
Pt 1000
AS
230 V, 50 Hz
Pt 1000
346521LL´N
oryerdbrblkgrbrblblk
Application with flow sensor and outdoor sensors
VS
RüS
Pt 1000
Pt 1000
3465
21LL´N
oryerdbrblkgrbrblblk
Type 5257-7
Room Panel
1432
230 V, 50 Hz
Caution!
Live wires
Caution!
Live wires
Application with flow, return flow, and room sensors with mode selector switch and set point adjuster
ororange
yeyellow
rdred
Fig.5·Wiring diagramsNote:
brbrown
blk black
grgreen
brbrown
blblue
blk black
Terminals at point of installation, not included in scope of delivery
10 EB 5757-7 EN
4Dimensions in mm
Ø 12
11
Dimensions in mm
55
80
3270eL einfahrend
114
70
2.5 m
aL ausfahrend
Fig. 6 · Type 5757-7 Controller with Electric Actuator
Type 5257-7 Room Panel, Pt 1000
Color: Cover and knobs RAL 9016 · Base RAL 7047
Continuous day mode (rated operation)
Continuous night mode (reduced operation)
Off/frost protection
12 EB 5757-7 EN
Functions
5Functions
Functions and parameters are entered in the TROVIS-VIEW Operator Interface (see
section 6).
5.1Outdoor temperature compensated control
In the outdoor temperature compensated control, the flow temperature (tVL) is automatically
adjusted in relationship to the outdoor temperature (t
troller defines the set point for flow temperature as a function of the outdoor temperature
(Fig. 8).
Basically, the following correlation exists: If the outdoor temperature drops, the flow temper
ature rises. By varying the
Gradient
to individual requirements: An increased
whereas a reduced
Gradient
and
Level
Gradient
causes a lower flow temperature. The
heating characteristic parallely upwards or downwards.
In reduced operation, the flow temperature is reduced by the amount set in
setback in reduced operation. The Maximum flow temperature
e parameters limit the flow temperature range. Return flow temperature limitation (see
tur
section 5.5) is an exception as it can reduce the flow temperature without restriction down to
20 °C flow temperature set point.
). The heating characteristic in the con
A
parameters, the characteristic can be adapted
causes an increase in flow temperature,
Level
parameter shifts the
Flow temperature
and
Minimum flow tempera-
-
-
[
C] t
VL
˚
150
140
130
120
110
100
90
80
70
60
50
40
30
20
20 16 12 84 0 -4 -8 -12 -16 -20
Fig. 8 · Heating characteristics
3.2
2.9
2.6
2.4
2.2
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.4
0.2
tVLFlow temperature
Outdoor temperature
t
A
t
A
[
C]
˚
EB 5757-7 EN 13
Functions
FunctionsWEConfiguration
F01 – Control mode1F01 - 1
F02 – Selecting the reference variable0F02 - 0
ParametersWERange of values
P02 – Flow temperature set-back in reduced
operation
P03 – Min. flow temperature20 °C0 to 150 °C
P04 – Max. flow temperature120 °C0 to 150 °C
P05 – Heating characteristic gradient1.60.2 to 3.2
P06 – Heating characteristic level0 K–30 to 30 K
Examples for setting the heating characteristic:
Old building, radiator design 90/70:Gradient approx. 1.8
4
New building, radiator design 70/55:Gradient approx. 1.4
4
New building, radiator design 55/45:Gradient approx. 1.0
4
Underfloor heating depending on arrangement:Gradient smaller than 0.5
4
15 K0 to 50 K
Fig. 9 · Typical application: Outdoor temperature compensated flow temperature control with return flow limitation;
switching between operating modes using a binary contact
14 EB 5757-7 EN
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