TA-Smart Fail-safe

2-way control valve with uniquely shaped EQM characteristics with flow, temperature, power measurement capabilities and electronic fail-safe function

The ultrasonic flow measurement technology combined with unique actuation algorithms capabilities provide best-in-class control performances. The TA-Smart Fail-safe controls can be set to flow or power, giving high on-site flexibility and providing highly effective comfort in heating and cooling applications. Its compact arrangement and simple set-up reduces installation and commissioning time.

Technical Specifications

Features and Benefits

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.

Best-in-class control

Accurate and fast control response even at very low flows in common part load conditions. Ensures full modulating control for the complete operating stroke leading to world class control and efficiencies.

Optional cloud connection

Easy remote access to data and configuration parameters allows to verify and adjust system performance.

Optional ΔT and temperature return limitation

Optimize the efficiency of your production units by ensuring optimal temperature regimes.

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)

Pre-setting (max./min. flow, max. power, max./min. position)

Reading (flow, power, energy, supply/return temperature, ΔT, position)

Change-over

Delayed start-up

ΔT and temperature return limitation

Diagnostic/Logging

Electronic fail-safe function

Error safe position

Manual override

Mode, status and position indication

Valve blockage protection

Valve clogging detection

Supply voltage [V]

24 VAC/VDC ±15%. Frequency 50/60 Hz ±3 Hz

Ingress protection

IP54 (according to EN 60529)

Media

Water or neutral fluids, water-glycol mixtures (0-57%).

Wireless

Thread

Bluetooth Low Energy (BLE)

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)

Input signal

By BACnet/Modbus or Analog signal. Analog in VDC or mA, selectable by jumper in the SmartBox;

Proportional dual-range (for change-over): 0-4.5 / 5.5-10 VDC. 2-5.5 / 6.5-10 VDC. 0-3.3 / 6.7-10 VDC. 2-4.7 / 7.3-10 VDC. 0-9 / 11-20 mA. 4-11 / 13-20 mA.

0(2)-10 VDC, Ri 47 kΩ.

0(4)-20 mA R i 500 Ω.

Adjustable sensitivity 0.1-0.5 VDC; 0.33 Hz low pass filter.

Default setting: Proportional 0-10 VDC

Proportional: 0-10, 10-0, 2-10 or 10-2 VDC; 0-20, 20-0, 4-20 or 20-4 mA

Proportional split-range: 0-5, 5-0, 5-10 or 10-5 VDC; 0-4.5, 4.5-0, 5.5-10 or 10-5.5 VDC; 2-6, 6-2, 6-10 or 10-6 VDC; 0-10, 10-0, 10-20 or 20-10 mA; 4-12, 12-4, 12-20 or 20-12 mA

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)

Output signal

0(2)-10 VDC, max. 8 mA, min. 1.25 kΩ.

BACnet/Modbus

Pressure class [PN]

DN 15-50: PN 25

DN 65-125: PN 16, PN 25

Characteristics

Settable: Stepless between EQM 0.25 and inverted EQM 0.25.

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.

Protection class

(according to EN 61140)

Surface treatment

DN 15-50: Non treated

DN 65-125: Electrophoretic painting

Flow control accuracy

±10% from 0.5% to 4% of qnom

±5% from 4% to 100% of qnom

Temperature sensor cable

10 m halogen free cable on request.

DN 15-50: 3 m halogen free

DN 65-125: 5 m halogen free

Certifications and directives

EMC-D. 2014/30/EU: EN 60730-1, -2-14.

PED: 2014/68/EU

Product standards EN 60730-x.

Material

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

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.

Power consumption

DN 15-50:

Peak: < 4.5 W (24 VDC); < 6.6 VA (24 VAC)

Operation: < 4.2 W (24 VDC); < 6 VA (24 VAC)

Standby: < 2.0 W (24 VDC); < 3.6 VA (24 VAC)

DN 65-80:

Peak: < 10.5 W (24 VDC); < 18.4 VA (24 VAC)

Operation: < 6.1 W (24 VDC); < 11 VA (24 VAC)

Standby: < 2.1 W (24 VDC); < 4.1 VA (24 VAC)

DN 100-125:

Peak: < 10.5 W (24 VDC); < 18.4 VA (24 VAC)

Operation: < 8 W (24 VDC); < 11.3 VA (24 VAC)

Standby: < 2.1 W (24 VDC); < 3.8 VA (24 VAC)

Peak consumption occurs for a short period after a power cut for recharging capacitors.

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)

Differential pressure (ΔpV)

Max. differential pressure (ΔpVmax): 400 kPa = 4 bar

Closing pressure: 600 kPa = 6 bar

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