TA-Smart-Dp Fail-safe
2-way Smart electronic differential pressure controller with flow, temperature and power measurement capabilities and electronic fail-safe function
The TA-Smart-Dp Fail-safe combines ultrasonic flow measurement with advanced actuation algorithms for top-tier control performance. Designed to maintain stable differential pressure, it enhances control valve authority, reduces noise, and simplifies balancing. In case of a power outage, the valve moves to a safety position, ensuring high system uptime. With flow or power control options, it offers flexibility for heating and cooling applications. Its compact design and easy setup minimize installation and commissioning time.
Product branding
Features and Benefits
Precise and stable differential pressure control
Delivers desired differential pressure ensuring accurate balancing.
Fully configurable fail-safe
Setting of position (extended, retracted) or intermediate position, flow or power. Possibility to set delay for entering/ leaving failsafe mode for a reliable and optimal fail-safe function. Ability to perform quick health check of fail-safe function.
Change-over functionality
Possibility to switch between two operating conditions to manage seasonality or heating and cooling with the same valve in change-over applications.
High measurement accuracy
High flow and temperature measurement accuracies in all configurations (medium type, and temperature) for all flow regimes.
Compactness and limited number of components
Reduces installation time and space requirements facilitating retrofit installation.
Convenient, reliable setup
Fully customizable and commissionable using Bluetooth enabled smart device reducing commissioning and diagnostic time.
Versatility in communication
Digital (key Bus protocols and MQTT) and Analog (0(2)-10 VDC or 0(4)-20 mA).
Applications
Heating and cooling systems.
Functions
Control (flow, power, position)
Reading (flow, power, energy, supply/return temperature, ΔT, position)
Change-over
Delayed start-up
ΔT and temperature return limitation
Diagnostic/Logging
Differential pressure control
Electronic fail-safe function
Error safe position
Manual override
Measuring (ΔpL)
Mode, status and position indication
Pre-setting Δp over the load (ΔpL)
Valve blockage protection
Valve clogging detection
Wireless
Thread
Bluetooth Low Energy (BLE)
Pressure class [PN]
PN 16 and PN 25
Differential pressure (ΔpV)
Max. differential pressure (ΔpVmax): 400 kPa = 4 bar Closing pressure: 600 kPa = 6 bar ΔpVmax = The maximum allowed pressure drop over the valve to fulfill all stated performances.
Flow range
The flow ranges (qsetmin - qnom) for different dimensions:
DN 15: 160 - 1200 l/h
DN 20: 380 - 1900 l/h
DN 25: 540 - 2700 l/h
DN 32: 920 - 4600 l/h
DN 40: 1560 - 7800 l/h
DN 50: 2680 - 13400 l/h
DN 65: 5800 - 29000 l/h
DN 80: 8640 - 43200 l/h
DN 100: 14200 - 71000 l/h
DN 125: 22400 - 112000 l/h
Minimum controllable flows (qcontr.min) DN 15 0.33% of qnom, DN 20-125 0.5% of qnom. qsetmin = Minimum settable flow. qnom = Maximum settable flow.
Temperature
Max. working temperature: 110°C
Min. working temperature: -10°C
Operating environment: 0°C – +50°C (5-95%RH, non-condensing)
Storage environment: -20°C – +70°C (5-95%RH, non-condensing)
Dp sensor
Min. working temperature: -15°C
Operating environment: -15°C – +80°C (5-95%RH, non-condensing)
Max. working temperature: 80°C
Storage environment: -40°C – +80°C (5-95%RH, non-condensing)
Media
Water or neutral fluids, water-glycol mixtures (0-57%).
Supply voltage [V]
24 VAC/VDC ±15%. Frequency 50/60 Hz ±3 Hz
Power consumption
DN 15-50: Peak: < 4.5 W (24 VDC); < 6.6 VA (24 VAC) Operation: < 4.0 W (24 VDC); < 5.6 VA (24 VAC) Standby: < 1.9 W (24 VDC); < 3.3 VA (24 VAC) DN 65-80: Peak: < 10.5 W (24 VDC); < 18.4 VA (24 VAC) Operation: < 5.8 W (24 VDC); < 10 VA (24 VAC) Standby: < 1.9 W (24 VDC); < 3.3 VA (24 VAC) DN 100-125: Peak: < 10.5 W (24 VDC); < 18.4 VA (24 VAC) Operation: < 7.7 W (24 VDC); < 10.8 VA (24 VAC) Standby: < 1.9 W (24 VDC); < 3.3 VA (24 VAC)
Input signal
By BACnet/Modbus
Output signal
0(2)-10 VDC, max. 8 mA, min. 1.25 kΩ.
BACnet/Modbus
Dp sensor: 0-10 V
Characteristics
Settable: Stepless between EQM 0.25 and inverted EQM 0.25.
Flow control accuracy
±10% from 0.5% to 4% of qnom
±5% from 4% to 100% of qnom
Measurement accuracy
Flow: Water: From 2% accuracy at 100% of qnom to 2.4% accuracy at 5% of qnom (according MID-Class 2 EN1434). Water+glycol: From 3% accuracy at 100% of qnom to 4% accuracy at 5% of qnom (according to MID-Class 3 EN1434). (see “Flow accuracy”). Temperature difference: ±0.1 K @ ΔT = 6 K (for cooling) ±0.15 K @ ΔT = 10 K (for heating) ±0.2 K @ ΔT = 20 K (for heating) Dp sensor: <2.5 kPa for 10-100 kPa sensor <10 kPa for 40-400 kPa sensor
Leakage rate
DN 15-50: Leakage rate < 0.01% of q, nom with correct flow direction (Class IV according to EN 60534-4)
DN 65-125: Tight sealing with correct flow direction (Class V according to EN 60534-4)
Pipe connection
DN 15-50: External thread according to ISO 228.
DN 65-125: Flanges according to EN-1092-2, type 21. Face to face length according to EN 558, series 1.
Temperature sensor cable
10 m halogen free cable on request.
DN 15-50: 3 m halogen free
DN 65-125: 5 m halogen free
Material
DN 15-50: Valve body: AMETAL® Valve insert: AMETAL® Valve plug: AMETAL® and PTFE Spindle: Stainless steel Spindle seal: EPDM O-ring Internal plastic parts: PPS Springs: Stainless steel O-rings: EPDM Temperature housing: AMETAL®. DN 65-125: Valve body: Ductile iron EN-GJS-400-15 Valve insert: Ductile iron EN-GJS-400-15 and brass Valve plug: Stainless steel and EPDM O-ring Valve seat: Stainless steel Spindle: Stainless steel Spindle seal: EPDM Springs: Stainless steel O-rings: EPDM SmartBox (DN 15-125): Cover: PC/ABS, red. Housing: PC/ABS, TPE. Actuators: DN 15-50: Cover: PC/ABS GF8, white RAL 9016, grey RAL 7047. Housing: PA GF40. Swivelling nut: Nickel-plated brass. DN 65-125: Cover: PBT, orange RAL 2011, grey RAL 7043. Bracket: Alu EN44200 Cables: Halogen free Dp sensor: Sensor housing: Stainless steel X8CrNiS18-9 (No 1.4305 EN 10 088-3). Membrane: Ceramic Sealing: EPDM AMETAL® is the dezincification resistant alloy of IMI.
Surface treatment
DN 15-50: Non treated
DN 65-125: Electrophoretic painting
Protection class
III (SELV)
(according to EN 61140)
Certifications and directives
EMC-D. 2014/30/EU: EN 60730-1, -2-14.
Dp sensor: CE certification EN 61326-2-3.
PED: 2014/68/EU
Product standards EN 60730-x.
The table below assists you in finding the relevant product based on its variant. For more details, please download the datasheet above.
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