T 5757 EN
TROVIS 5757-3 Electric Actuator with Process Controller
for domestic hot water heating

Application
Electric actuator with process controller for local heat supply and district heating networks

Special features
The electric actuator with process controller is an electric actuator combined with an integrated digital controller used to position valves (DN 15 to 25). It is used to control domestic hotwater heating in instantaneous heating systems used in small
to medium-sized buildings connected to a district heating or
local heat supply network. It is particularly suitable for mounting to SAMSON Types 3222, 3222 N and 2488 Valves aswell as to special versions of Type 3226 and Type 3260
Valves.
• Control using two different set points, e.g. DHW temperature and DHW temperature for thermal disinfection. A binary input is used to switch between the set points.
• Function to maintain water temperature constant, preventing the heat exchanger from cooling down between tapping• Direction of action reversible–

Globe valve opens when the actuator stem retracts (increasing/increasing)–Three-way mixing valve mixes/diverts the flow(s) when
the actuator stem extends (increasing/decreasing)• Limit value monitoring:–

The valve is closed by the actuator when the maximum
adjustable limit is exceeded–The frost protection function is started when the temperature falls below the minimum adjustable limit• Configuration, parameterization, diagnostic function andonline connection for monitoring using the TROVIS-VIEW
software–Direct data transmission using a connecting cable(direct connection to computer)–

Data transmission over a memory pen• No maintenance• Special valve version available for small tapping amounts

Fig. 1: TROVIS 5757-3 Electric Actuator with Process Controller

SAMSON AKTIENGESELLSCHAFT · Weismüllerstraße 3 · 60314 Frankfurt am Main, Germany
Phone: +49 69 4009-0 · Fax: +49 69 4009-1507 · samson@samsongroup.com · www.samsongroup.com

Edition January 2023

Design and principle of operation

2

8

The use of the Type 5207-0060 Pt1000 Sensor is recommended in conjunction with a sensor pocket to provide
optimal positioning of the temperature sensor at the heatexchanger. The 0/4 to 20 mA current input can be usedin place of the Pt1000 sensor for control purposes or as
the reference variable.

1In addition, a water flow sensor or a flow switch can beconnected to quickly recognize when hot water is being
tapped or to improve the control accuracy even further.
Fig. 4 shows a sample application.

1.1

3

5

4
7
6–Output
The switching output can be configured as either a pumpoutput (circulation pump for the DHW circuit or heatingcircuit), a fault alarm output or an output to report when
hot water is tapped.

Mounting
1
1.1
2
3
4
5
678

Electric actuator with process controller
Connecting cable
Handwheel
Actuator stem
Coupling nut
Travel indicator
Plug stem
Valve spring
Serial interface

Fig. 2: Valve and TROVIS 5757-3 Electric Actuator with ProcessController

The digital controller is connected to a temperature sensor onthe input side which can be optionally upgraded by a flowrate sensor or a flow switch.
The set points W1 and W2 of the digital controller are set to60 and 70 °C respectively and can be changed like all othersettings using the TROVIS-VIEW software. The binary input
can be used to change between the two set points W1 andW2.
The output signal of the digital controller functions as a threestep signal on the synchronous motor of the actuator and istransferred over the connected gear to the actuator stem (3 inFig. 2) and used as the positioning force.

The electric actuator with process controller is mounted onto
the valve using a coupling nut (4). Before mounting the actuator on the valve, retract the actuator stem. Hold the actuator
stem in this position, while tightening the coupling nut with
20 Nm at the maximum.
Any mounting position may be used, however, the actuator
may not be installed in a suspended position.
Any wires of the connecting cable that are not used need to
be insulated.
Manual override
The valve can be moved to any position in the de-energizedstate by the handwheel (2 in Fig. 2). Travel and direction ofaction can be read off the travel indicator (5 in Fig. 2) on theside of the actuator housing.
Operation–We recommend installing the heat exchanger in a horizontal position with the connections at the side to protect
the hot water system against hot water accumulation when
operated from standstill and to prevent limescale in theheat exchanger.
First consult the heat exchanger manufacturer concerning
this mounting position and the intended effect.

The motor is switched off by torque switches when an end position is reached or in case the motor is overloaded.
When the actuator stem extends, the valve is closed, opposing
the force of the valve spring (7 in Fig. 2). When the actuator
stem retracts, the valve is opened as the plug stem (6 in Fig. 2)
follows the motion of the return spring.
Electrical equipment–Inputs
In addition to the temperature sensor input, the digital
controller has a 0/4 to 20 mA current input. This can beused either instead of the temperature sensor or to connect
an external reference variable.
The actuator requires a Pt1000 temperature sensor (e.g.
Type 5207-0060) to be connected for it to function. The
fast-response Pt1000 sensor allows the temperature to becontrolled to the corresponding set point almost immediately.

2Without circulation pipe

Cold water

District heating return

Hot water

District heating
supplyFig. 3: Heat exchanger–Tapping small amounts of hot water

A special version of Type 3222/5757-3 (DN 25, KVS =2.5, with Type 3222 N KVS = 2) with a special plug design
is available for small installations (apartment or house).
As a result, even small tapping amounts can be controlled
optimally.

T 5757 EN

Digital controller settings
The digital controller settings can be changed in the TROVISVIEW software.
Configuration
F 01 –

Default
setting

DHW tapping recognition
0: Continuous control
1: Flow rate sensor active1

F 02 –

Flow rate sensor
0: Flow switch
1: Water flow sensor

1

F 03 –Adaptation
0: Not active
1: Active (with water flow sensor)

1

F 04 –

Direction of action
0: >> (increasing/increasing)1: <> (increasing/decreasing)0

F 05 –

Current input
0: Not active (binary input)
1: Active0

Function of current input
0: Actual value
1: Set point0

F 07 –

Measuring range of current input
0: 0 – 20 mA
1: 4 – 20 mA

0

F 08 –

Function of binary input
0: Termination of maintaining heat exchanger at constant temperature
1: Switchover between internal set points

0

F 09 –

Maintain heat exchanger at constant temperature
0: Time adjustable
1: Continuous0

F 10 –

Upper limit (GWH)
0: No limitation
1: Exceeding GWH causes switch-off0

F 11 –

Lower limit (GWL)
0: No frost protection
1: Violation of GWL causes frost protection tostart0

F 16 –

Function of switching output
1: Not active
2: Fault alarm
3: Circulation pump (DHW)
4: Circulation pump (heating)
5: Tapping
6: Circulation pump (heating) reversed

1

F 17 –

Pump protection
0: Not active
1: Active1

F 06 –

T 5757 ENParametersDefault setting

P 01 –

Set point W1
0.0 to 100.0 °C

60.0 °C

P 02 –

Set point W2
0.0 to 100.0 °C

70.0 °C

P 03 –

Lower measuring range value Xmin
–50.0 to 90.0 °C

0.0 °CP 04 –

Upper measuring range value Xmax
10.0 to 150.0 °C

100.0 °C

P 05 –

Upper limit (GWH)
0.0 to 100.0 °C

95.0 °C

P 06 –

Lower limit (GWL)
0.0 to 20.0 °C

5.0 °CP 07 –

Proportional-action coefficient KP
0.1 to 50.0 °C

0.8 °CP 08 –

Reset time Tn
0 to 999 s15 s

P 09 –

Derivative-action time Tv
0 to 999 s0s

P 10 –

Actuator transit time Ty
10 to 240 s

25 s

P 11 –

Set-back difference
0 to 30 K8K

P 12 –

Heating period to maintain heatexchanger at constant temperature
0 to 25.5 h

24.0 h3

Application
23

1
2
3
4
5
6
7

1
4Heat exchanger
Temperature sensor including sensor pocket (VSTW)
Supply from district heating network (VL)
TROVIS 5757-3 Electric Actuator with Process Controller
Water flow sensor with connecting cable
Return flow to district heating network (RL)
Valve, e.g. Type 3222

567VSRL
WWKW
VSTW
WSS

Flow pipe
Return flow pipe
Hot water
Cold water
Flow sensor
Water flow sensor

Fig. 4: Sample application: domestic hot water heating with Pt1000 sensor and water flow sensor

Electrical connection
Supply line

BNL

BU

NBK

1)

BNBrown

BU

Blue

BK

Black

230 V, 50 Hz

1)

Pump

! DANGER
Live wires
Î Do not touch wire ends.

Switched output

Fig. 5: Electrical connection · Supply line

GND
TX

1RX6Fig. 6: Terminal assignment of RJ-12 jack

4T 5757 ENSupply line

BNL

BU

N

BK1)

BNBrown

BU

Blue

BKBlack

230 V, 50 HzPump

1)! DANGER
Live wires
Î Do not touch wire ends.

Switched output

Fig. 7: Electrical connection · Supply line
Control line
Temperature sensor and binary inputs
OGYEź

Pt1000 sensor
Binary contact for setpoint switchover

RD

BE1

BN
BK
BE2

GN

Flow switch
Water flow sensor
Information on connection of water flow sensor (see Fig. 9).

1)

OGYE
RD
BN
BK

Water flow sensor 1)

GNCurrent input for set point or measured value
OGYE
RD
BN
BKGN0(4) ... 20 mA

OGYE
RDBN
BK
GN

OrangeYellow
RedBrown
Black
GreenFig. 8: Electrical connection of TROVIS 5757-3 · Control line

T 5757 EN

5Water flow sensor (WSS)

WSS
GND
Signal5V

Extension cable

TROVIS 5757-3

BK

BN

BK

GN

GN

GN

WH

WH

BN

Wire end ferrule
WH
GN
BN
50

PVC 3 x 0.5 mm²~
Ø
512Connector
20

WH

Nameplate
18.9

BK

GN

Bushing

GN WH

BN

Cable tie

150

BK
BN
GN
WH

BlackBrown
GreenWhite

Fig. 9: Electrical connection of TROVIS 5757-3 · Water flow sensor (WSS)

6T 5757 EN

Technical dataTable 2: Technical data · Accessories

Table 1: Technical data · TROVIS 5757-3 Electric Actuatorwith Process ControllerType 5207-0060 Pt1000 Sensor

TROVIS 5757-3

Optimized temperature sensor with fast response which is simple toinstall
Electrical connection

Wire ends fitted with wire end
ferrules including plastic sleeves

6 mm

Connecting cable

PVC, 2000 mm long

Manual override

Yes–5 to +80 °C

Transit time for rated travel

20 s

Permissible ambient temperatureThrust

300 N

Perm. medium temperature–5 to +90 °C

Supply voltage

230 V (±10 %), 50 HzMechanical connection

Stainless steel 1.4404

Power consumption

Approx. 4 VA

Protective tubing

Stainless steel 1.4404

Sensor input

Pt1000Time response

t0.5 < 1 s · t0.9 < 3 s,
0.4 m/s in water

Thread length

52 mmPressure rating

PN 16

Connection to valve

Force-locking

Rated travel

Current input
Binary input BI1

0/4 to 20 mA1)

Set point switchover(W1 and W2)

Binary input BI2 1)

Flow switch

Sensor pocket

Input for water flow sensor

530 pulses/l,
measuring range 1 to 30 l/min

For Type 5207-0060 Pt1000 Sensor for mounting to heat exchangers
for optimal positioning instantaneous heating systems

Switching output

230 V, 50 Hz, max. 1 AMaterial

Red brass CC491K (2.1096.01)

Electrical connection

Wire end ferrules required 2)

Mechanical connection

Number of connecting cables

2G ¾ male thread
G ¼ female thread
G ¾ coupling nut

Connecting cable length

1 m or 2.5 m

Pressure rating

PN 16

Permissible temperature ranges 3)

Water flow sensor with extension cableAmbient

0 to 50 °C

Axial turbine flowmeter for liquidsStorage–20 to +70 °CMeasuring range

1 to 30 l/min

Degree of protection

IP 42 according to EN 60529

Measuring accuracy

Class of protection

II according to EN 61140

1 % of the upper measuring range
value

Device safety

According to EN 61010-1

Mechanical connection

G ¾ male thread

Noise immunity

According to EN 61000-6-2 andEN 61326-1

Valve size

DN 10

Pressure rating

PN 10

According to EN 61000-6-3 andEN 61326-1

Max. medium temperature

70 °C, briefly 90 °C

Supply voltage

4.5 to 24 V DC

Degree of protection

IP 54 according to EN 60529

Noise emission
ConformityMaterials

Electrical connection

Housing

Plastic (PPO with glass fiber reinforcement)

3 single wires with connector (JST)approx. 150 mm longSensor

Hall effect sensor

Coupling nut M32x1.5

Brass

Pressure loss

0.25 bar at 15 l/min

Approx. 0.7 kg

Pipe socket/vane wheel

PPO Noryl

Weight1)
2)
3)

Recommendation: use devices with gold contacts when using relays.
Insulate any wires that are not used.
The permissible medium temperature depends on the valve on
which the electric actuator with process controller is mounted. Thelimits in the valve documentation apply.

T 5757 EN

7Dimensions

11Ø 128055

2.5 m

3270

eL Stem retracts
aL Stem extends

70114

approx.
50

2000

Fig. 10: Dimensions in mm · TROVIS 5757-3 Electric Actuator with Process Controller

G¾G¾65

14G¾G¾

61165

G¾38

52 ±1

Ø815

Ø5.4

G¼G¼

Ø3.3

G¾35

Temperature sensor (Pt1000)

Sensor pocket (including gasket)
for heat exchanger with G ¾

Connecting piece (including gasket)
for valve G ¾

35

Circulation pipe connection(including gasket)

G1G113501339G¾G¾65

G¾G¼35

Water flow sensor withextension cableSensor pocket (including gasket) for heat exchanger with G 1

G¾Connecting piece (including gasket) for valve G 1

Fig. 11: Dimensions in mm · Accessories

8T 5757 EN

Accessories
Communication
Memory pen-64

Order no. 1400-9753

Connecting cable RJ-12/D-sub, 9 pin

Order no. 1400-7699

Modular adapter D-sub 9-pin/RJ-12 for memory pen

Order no. 1400-7698

Hardware package consisting of:Order no. 1400-9998–Memory pen-64–

Connecting cable–

Modular adapter

USB to RS232 adapter

Order no. 8812-2001

Software
TROVIS-VIEW (free of charge)

u www.samsongroup.com > Service & Support > Downloads >TROVIS-VIEWSensors
Water flow sensor (WSS)
Pt1000 sensor (fast response)

Order no. 1400-9246
Type 5207-0060

PipelineSensor pocket for heat exchanger G ¾

Order no. 1400-9249

Sensor pocket for heat exchanger G 1

Order no. 1400-9252

Connecting piece for valve G ¾

Order no. 1402-0061

Connecting piece for valve G 1Order no. 1402-0062

Circulation pipe connection

Order no. 1400-9232

T 5757 EN9Ordering text
TROVIS 5757-3 Electric Actuator with Process Controller–With switching output–Connecting cable 1 m/2.5 m

Associated mounting and operating instructions–TROVIS 5757-3 Electric Actuatorwith Process Controlleru EB 5757

Associated Configuration Manual–

TROVIS 5757-3 Electric Actuatorwith Process Controller

u KH 5757–

Type 5207-0060 Pt1000 Sensor(fast response)u T 5222–

Type 3222 Valveu T 5866–

Type 3222 N Valveu T 5867–

Type 3226 Valveu T 5863–

Type 3260 Valveu T 5861

Specifications subject to change without notice

T 5757 EN

2023-01-16 · English

Associated Data Sheets