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TROVIS 5757-7 Electric Actuator with Process Controller for heating and cooling applications Application Electric actuator with integrated digital controller used to position force-locking valves in nominal sizes DN 15 to 25. Designed for installations in small to medium-sized buildings for outdoor-temperature-compensated control, fixed set point control or fixed set point control with room temperature sensors. The TROVIS 5757-7 is a combination of an electric actuator and an integrated digital controller. It is particularly suitable for mounting to SAMSON Types 3222, 3222 N, 2488, and 3267 Valves (DN 15 to 25) as well as to special versions of Type 3226 and Type 3260 Valves. Special features •• Outdoor-temperature-compensated control of a heating circuit: The flow temperature is controlled based on the outdoor temperature over an adjustable heating characteristic. A binary input allows switching between rated and reduced operation or between rated and stand-by operation with frost monitoring. As an alternative to the binary input, the gradient or a level displacement of the heating characteristic can be changed by the adjustment knob of a room sensor. •• Fixed set point control · This function is used to control the heating circuit to a fixed set point. Fig. 1: TROVIS 5757-7 Electric Actuator with Process Controller •• Configuration, parameterization, diagnostic function and direct connection for monitoring using the TROVIS-VIEW software –– Direct data transmission using a connecting cable (direct connection to computer) •• Fixed set point control with room sensor · The set point is changed by the room temperature. A permanently active flash adaptation adapts the supply of heat to the required demand by changing the flow temperature. •• Return flow temperature limitation · The temperature of the return flow is monitored. When an adjustable maximum limit is exceeded, the flow temperature is reduced until it remains below the limit. –– TROVIS-VIEW configuration software for TROVIS 5757-7 Electric Actuator with Process Controller –– Hardware package with a memory pen-64, a connecting cable, and a modular adapter (order no. 1400-9998) •• Type 5257-7 Room Panel can be connected: –– Data transmission using a memory pen –– Convenient room panel with various operating mode settings (Day mode · Night mode · OFF/frost protection) –– Type 5267-2 Contact Sensor (Pt 1000) (Var.-ID: 1058683) –– Binary input on room panel for remote switchover –– Type 5227-2 Outdoor Sensor (Pt 1000) (Var.-ID: 1043862) –– Possible override of the flash adaptation based on the room temperature or heating characteristic (gradient or level with outdoor-temperature-compensated control) implemented by the electric actuator with process controller –– Type 5257-7 Room Panel (Pt 1000) with potentiometer and mode selector switch (Var.-ID: 1180319) Note: Details on Type 3222, Type 3222 N, Type 3267, Type 3226, and Type 3260 Valves can be found in the Data Sheets u T 5866, u T 5867, u T 5894, u T 5863, and u T 5861. •• Frost monitoring and automatic initiation of protective action •• Automatic anti
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Principle of operation (Fig. 3) The TROVIS 5757-7 is a combination of an electric actuator and an integrated digital controller. 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 temperature sensor input to measure the flow temperature, the digital controller has a potentiometer input (1000 to 1100 Q or 1000 to 2000 Q). 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...
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Digital controller settings The digital controller settings can be changed in the TROVIS-VIEW Configuration and Operator Interface. 11 The default setting F13 - 1 applies for level #2.
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Installation Before mounting the actuator on the valve, retract the actuator stem. Hold the actuator stem in this position, while tightening the coupling nut. Any mounting position may be used, however, the actuator may not be installed in a suspended position. Electrical connection Two cables both 2.5 m in length; cable ends fitted with wire-end ferrules Ordering text TROVIS 5757-7 Electric Actuator with Process Controller Technical data TROVIS 5757-7 Electric Actuator with Process Controller TROVIS 5757-7 Electric Actuator with Process Controller 1 Recommendation: use devices with gold...
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Electrical connection Application with flow sensor (VS), return flow sensor (RüS) and outdoor sensor (AS) and potentiometer functioning as set point adjuster NOTICE Live wires Note: Terminals at point of installation not included in the scope of delivery. Application with flow sensor (VS), return flow sensor (RüS) and outdoor sensor (AS) and binary input to switch between operating modes Type 5257-7 Room Panel 2 NOTICE Live wires Application with flow sensor (VS), return flow sensor (RüS) and room sensor with mode selector switch and room set point adjuster NOTICE Live wires Application...
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eL Stem retracts aL Stem extends TROVIS 5757-7 Electric Actuator with Process Controller Accessories for heating control Type 5227-2 Outdoor Sensor (Pt 1000) Color: RAL 9016 Type 5267-2 Contact Sensor (Pt 1000) (flow and return flow temperature measurement) Type 5257-7 Room Panel (Pt 1000) Continuous day mode (rated operation) Continuous night mode (reduced operation) Off/frost protection
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SAMSON AG · MESS- UND REGELTECHNIK Weismüllerstraße 3 · 60314 Frankfurt am Main, Germany Phone: +49 69 4009-0 · Fax: +49 69 4009-1507 samson@samson.de · www.samson.de Specifications subject to change without
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