VTSA-ASI

Product Description
The Festo VTSA-ASI valve terminal combines up to 32 pneumatic valves with a common pneumatic and electrical supply via AS-Interface bus communication . Conforming to ISO 15407-2 and ISO 5599-2 standards, this vertical stacking valve terminal allows five different valve sizes (18 mm, 26 mm, 42 mm, 52 mm, and 65 mm) to be combined on one terminal . The AS-Interface enables simultaneous transmission of data and power through a simple 2-wire cable, significantly simplifying wiring in distributed automation systems .

Key Features & Advantages:

• AS-Interface Fieldbus Communication: Features AS-Interface bus connection with ID code S-7.F.E, supporting simultaneous data and power transmission over a 2-wire cable. Available in 4E4A (4 inputs/4 outputs) or 8E8A (8 inputs/8 outputs) configurations 

• Five Mixable Valve Sizes: Supports 18 mm, 26 mm, 42 mm, 52 mm, and 65 mm valve sizes on one valve terminal, allowing optimized flow capacity per valve position from 550 l/min up to 4,000 l/min 

• High Valve Position Capacity: Accommodates up to 32 valves and up to 32 independent pressure zones, providing exceptional scalability for large-scale pneumatic control systems 

• IP65 Protection Class: Provides dust-tight protection and protection against water jets (NEMA Type 4), suitable for washdown environments and demanding industrial conditions 

• No Corrosion Stress Construction: Rated with Corrosion Resistance Class (CRC) 0, ensuring exceptional durability in harsh industrial environments 

• ATEX Zone 2 Certification: Certified for potentially explosive gas atmospheres with II 3G Ex nA IIC T3 X Gc rating. Explosive ambient temperature range: -5°C ≤ Ta ≤ +50°C 

• Integrated I/O System: Features integrated inputs for sensor connection via exchangeable CPX sub-bases. Available with M12, HARAX, or terminal strip connections (4-pin or 5-pin) 

• Extensive Valve Function Range: Available in over 12 valve functions including 5/2 monostable/bistable, 5/3 pressurized/exhausted/closed, 2x3/2, 2x2/2, and safety function variants 

• Low Power Consumption: 5/2 and 5/3 valves consume 1.6 W (72 mA), while 3/2 valves consume 1.3 W (60 mA) at 24 V DC, ensuring energy-efficient operation 

• LED Status Indication: Features status LEDs for AS-Interface voltage (green), fault indication (red), AUX/PWR auxiliary supply (green), and input signals (yellow) for easy system troubleshooting 

• Integrated Watchdog Function: Built-in watchdog resets outputs (solenoid coils) automatically when bus communication fails, ensuring defined safe state 

• Modular Design with Mixed Valve Sizes: Valve island type 44 with modular construction allows mixing different valve sizes on a single manifold for optimized space and flow management 

• Internal or External Pilot Air Supply: Supports both internal and external pilot air supply configurations (3 bar to 10 bar), allowing flexible system design 

• Vacuum Capable: Suitable for vacuum applications down to -0.9 bar, expanding usability for negative pressure handling 

• Wide Operating Temperature Range: Operates reliably from -5°C to 50°C, with storage temperature from -20°C to 60°C 

• c UL us & RCM Certified: Carries c UL us - Recognized (OL) and RCM compliance mark certifications, ensuring safety for international industrial applications 

• CE and RoHS Compliant: Meets EU EMC Directive, EU Explosion Protection Directive (ATEX), and RoHS requirements 

Technical Specifications:

Brand: Festo

Model Series: VTSA-ASI

Product Numbers: 555564 (VTSA-ASI), 8173639, 8173642

Product Type: Valve Terminal / Valve Manifold with AS-Interface Connection

Terminal Type: 44

Valve Sizes Supported: 18 mm, 26 mm, 42 mm, 52 mm, 65 mm

Max. Number of Valve Positions: 32

Max. Number of Pressure Zones: 32

Standard Nominal Flow Rate: 550 l/min (18 mm), 1100 l/min (26 mm), 1300 l/min (42 mm), 2900 l/min (52 mm), 4000 l/min (65 mm)

Operating Pressure: -0.9 bar to 10 bar

Vacuum Suitability: Yes

Operating Medium: Compressed air to ISO 8573-1:2010 [7:4:4]

Media Note: Lubricated operation possible (required for further use thereafter) 

Corrosion Resistance Class (CRC): 0 – No corrosion stress

Degree of Protection: IP65 / NEMA Type 4 (when fully plugged or fitted with protective cover) 

Ambient Temperature: -5°C to 50°C

Storage Temperature: -20°C to 60°C

Relative Air Humidity: 0% to 90% at 40°C

ATEX Certification: II 3G Ex nA IIC T3 X Gc (Zone 2 gas) 

Explosive Ambient Temperature Range: -5°C ≤ Ta ≤ +50°C

CE Marking: EU EMC Directive, EU Explosion Protection Directive (ATEX)

c UL us Certification: Recognized (OL)

RCM Mark: Yes

KC Certification: KC EMC

AS-Interface Specifications: ID = FH, ID1 = FH, ID2 = EH; IO = 7H; Profile = S-7.F.E 

AS-Interface Bus Voltage Range: 26.5 V DC to 31.6 V DC (protected against incorrect polarity) 

AS-Interface Current Consumption (Electronics): <25 mA

AS-Interface Max. Sum Current for Inputs: 350 mA (with additional power supply) / 500 mA (without additional power supply)

Additional Supply (Load Voltage): 21.6 V DC to 26.4 V DC (24 V DC ±10%) 

Power Consumption per Coil: 5/2 and 5/3 valves – 1.6 W (72 mA); 3/2 valves – 1.3 W (60 mA) 

Max. Switching Frequency: 10 Hz

Max. Duty Cycle at >2 Hz: 50% 

Watchdog Function: Active after approx. 40-100 ms

Valve Functions Available: 2x2/2 normally closed monostable, 2x3/2 normally closed monostable, 2x3/2 normally open monostable, 2x3/2 open/closed monostable, 5/2 bistable, 5/2 bistable with dominant signal, 5/2 monostable, 5/2 monostable with safety function, 5/3 pressurized, 5/3 exhausted, 5/3 closed 

Valve Design: Piston spool / Poppet valve

Sealing Principle: Soft

Pilot Air Supply: Internal or External

Pilot Pressure: 3 bar to 10 bar 

Exhaust Air Function: Via throttle plate

Electrical Actuation: AS-Interface fieldbus

Signal Status Display: LED (AS-i green, Fault red, AUX/PWR green, Inputs yellow) 

Valve Manifold Design: Modular – pneumatic valve sizes can be mixed

Type of Mounting: H-rail (EN 60715), Wall mounting

Mounting Fastening Points: Max. distance between fastening points ≤ 280 mm 

Tightening Torque – Sub-base Screws: 0.65 Nm ±10% 

Tightening Torque – Earthing Screw: 1.0 Nm ±10% 

Tightening Torque – M12 Connector: 0.5 Nm 

Tightening Torque – M8 Connector: 0.25 Nm to 0.5 Nm 

Material Note: RoHS-compliant

Country of Origin: Germany

Order Code Variants (from search results):

• VTSA-ASI (555564): Standard AS-Interface valve terminal with 4E/4A or 8E/8A I/O configuration 

• VTSA-ASI-NPT (52E-...-EX1E): AS-Interface valve terminal with NPT threaded connections 

• VTSA-F-ASI (8173639): VTSA-F series valve terminal with AS-Interface connection 

• VTSA-F-ASI-NPT (8173642): VTSA-F series AS-Interface valve terminal with NPT connections 

LED Diagnostic Codes:

ATEX Special Conditions for Use (Marking X):

• Install device in enclosure with minimum IP54 protection according to EN 60079-0 

• Do not disconnect or open when powered 

• Prevent separation of plug connectors or housing parts by using housing with special lock 

• Use cable strain relief for cables in front of all plugs 

• Prevent electrostatic charging of housing through suitable installation measures 

• Energize only one coil of a 5/2-way or 5/3-way valve at a time 

• Protect device from UV radiation and any shock loading 

• Device may only be used in area with at least pollution degree 2 (IEC 60664-1) 

Ideal For:
Large-scale industrial automation systems requiring AS-Interface bus communication, applications needing up to 32 valve positions with up to 32 pressure zones, systems requiring five mixable valve sizes (18-65 mm) on a single manifold, paint shop environments requiring LABS conformity, potentially explosive atmospheres ATEX Zone 2 (gas), automotive manufacturing, machine tools, packaging machinery, material handling systems, chemical and pharmaceutical processing (Zone 2 hazardous areas), vacuum applications down to -0.9 bar, systems requiring IP65 washdown protection, applications with integrated sensor inputs (4 or 8 channels), and systems where simplified 2-wire bus wiring is preferred over traditional multi-pin connections.

Why Choose Festo VTSA-ASI Valve Terminal?
Engineered by Festo to ISO 15407-2/ISO 5599-2 standards with AS-Interface bus communication for simplified 2-wire wiring, supporting up to 32 valve positions and 32 pressure zones, featuring five mixable valve sizes (18-65 mm) with flow rates from 550 to 4,000 l/min, CRC 0 corrosion resistance, IP65/NEMA 4 protection, ATEX Zone 2 certification (II 3G Ex nA IIC T3 X Gc), integrated I/O system with 4 or 8 inputs via exchangeable CPX sub-bases (M12, HARAX, or terminal strip connections), low power consumption (1.6 W/1.3 W), LED status diagnostics with watchdog function, extensive valve function options, internal or external pilot air supply (3-10 bar), vacuum compatibility down to -0.9 bar, c UL us and RCM certifications, CE and RoHS compliance, and German engineering quality, this valve terminal ensures reliable, flexible, and safe pneumatic control for demanding industrial automation applications with AS-Interface fieldbus connectivity.

Tags:
#Festo #VTSAASI #ValveTerminal #ValveManifold #ASInterface #Fieldbus #ISO154072 #ISO55992 #IP65 #CRC0 #ATEX #cULus #IntegratedIO #MalaysiaSupplier