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TROVIS 5725-7 (with fail-safe action)

TROVIS 5725-7 (with fail-safe action)
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TROVIS 5725-7 (with fail-safe action) - 1

Electric Actuator with Process Controller TROVIS 5725-7 (with fail-safe action) for heating and cooling applications Application Electric actuator with integrated digital controller for heating, ventilation and air-conditioning systems. For globe and threeway valves, e.g. Types 3213, 3214, 3260, 3222 or 3226 Valves in nominal sizes DN 15 to 50. The TROVIS 5725-7 is a combination of an electric actuator with fail-safe action and an integrated digital controller. It is particularly suitable for mounting to SAMSON Types 3213, 3214, 3260, 3222 and 3226 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. An external binary contact 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. •• 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. •• Type 5257-7 Room Panel can be connected: –– Convenient room panel with various operating mode settings (Day mode · Night mode · OFF/frost protection) –– Binary input on room panel for remote switchover –– 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 controller •• Frost monitoring and automatic initiation of protective action Fig. 1: TROVIS 5725-7 Electric Actuator with Process Controller •• Configuration, parameterization, diagnostic function and direct connection for monitoring in TROVIS-VIEW software: –– Direct data transmission using a connecting cable (direct connection to PC) –– Data transmission using a memory pen Accessories –– TROVIS-VIEW configuration software for TROVIS 5725-7 Electric Actuator with Process Controller –– Hardware package with a memory pen-64, a connecting cable and a modular adapter (order no. 1400-9998) –– Memory pen-64 (order no. 1400-9753) –– Type 5267-2 Contact Sensor (Pt 1000) –– Type 5257-7 Room Panel (Pt 1000) with potentiometer and mode selector switch –– Type 5227-2 Outdoor Sensor (Pt 1000) Note: Refer to Data Sheets u T 5768, u T 5769, u T 5761, u T 5766, and u T 5763 for details on Type 3213, Type 3214, Type 3260, Type 3222, and Type 3266 Valves. •• Automatic anti-blockin

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TROVIS 5725-7 (with fail-safe action) - 2

Principle of operation (Fig. 3) The TROVIS 5725-7 Electric Actuator with Process Controller consists of of a digital controller integrated into an electric actuator with fail-safe action. The digital controller is connected to a flow temperature sensor on the input side, which can optionally be upgraded by a return flow sensor, outdoor sensor, or a 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/2000 Q). This changes the heating characteristic when outdoor-temperature-compensated...

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TROVIS 5725-7 (with fail-safe action) - 3

Digital controller settings The digital controller settings can be changed in the TROVIS-VIEW Configuration and Operator Interface.

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TROVIS 5725-7 (with fail-safe action) - 4

Mounting Prior to mounting the actuator on the valve, retract the actuator stem. To do this, first remove the housing cover. Place a 4 mm hex screwdriver on the actuating shaft, turn it counterclockwise to retract the stem and hold it in position. The coupling nut may only be tightened after the stem has been retracted. Any mounting position may be used, however, the actuator may not be installed in a suspended position. Ordering text TROVIS 5725-7 Electric Actuator with Process Controller Closing force ... N Valve travel ... mm Power supply 230 V/50 Hz Mounting position The control valve...

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TROVIS 5725-7 (with fail-safe action) - 5

Typical applications Outdoor-temperature-compensated flow temperature control with return flow temperature limitation; with binary contact to switch between operating modes Type 5257-7 Room Panel Fixed set point control with room sensor with return flow temperature limitation; Operating mode switchover at room panel (Type 5257-7) AS Outdoor sensor RS Room sensor/room panel RüS Return flow sensor VS Flow sensor UP Circulation pump (heating) RL Return flow to district heating network Supply from district heating network

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TROVIS 5725-7 (with fail-safe action) - 6

Electrical connection Application with flow sensor (VS), return flow sensor (RüS) and outdoor sensor (AS) and potentiometer functioning as set point adjuster Outdoor sensor RüS Return flow sensor Flow sensor CAUTION! Live wires Application with flow sensor (VS), return flow sensor (RüS) and outdoor sensor (AS) and binary input to switch between operating modes CAUTION! Live wires Application with flow sensor (VS) and outdoor sensor (AS) CAUTION! Live wires Application with flow sensor (VS), return flow sensor (RüS) and room sensor with mode selector switch and room set point adjuster...

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TROVIS 5725-7 (with fail-safe action) - 7

Dimensions in mm TROVIS 5725-7 Electric Actuator with Process Controller 146 eL Stem retracts aL Stem extends Accessories for heating control 20 Type 5227-2 Outdoor Sensor (Pt 1000) Color: RAL 9016 Type 5257-7 Room Panel (Pt 1000) Continuous day mode (rated operation) Continuous night mode (reduced operation) Off/frost protection Type 5267-2 Contact Sensor (Pt 1000) (flow and return flow temperature measurement)

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