BURKERT 20139294 (Type 8652) is an electro-pneumatic AirLINE valve island configured with 4 valve slots, developed specifically for process automation tasks. The pre-configured unit incorporates four 3/2-way normally closed (circuit function CF-C) servo-assisted solenoid valves, an anodised aluminium AirLINE Quick baseplate adapter for control cabinet floor mounting, and dual RJ45 Industrial Ethernet communication ports that support PROFINET IO, EtherNet/IP, Modbus TCP, EtherCAT, and CC-Link IE Field Basic.

Equipped with integrated check valves in exhaust ducts 3 (R) and 5 (S), the valve terminal prevents unexpected pilot actuation triggered by backpressure spikes during valve switching. The integrated pneumatic HotSwap function in pressure supply channel 1 (P) permits live valve replacement while the pneumatic pressure supply remains active.

Technical Specifications

Specification Parameter	Value / Execution for Article 20139294
Valve Island Type	Type 8652 AirLINE
Order Code (Article No.)	20139294
Number of Valve Stations	4 PCE (11 mm station width)
Valve Configuration (Positions 1 to 4)	3/2-way solenoid valve, CF-C normally closed
Communication Interface Hardware	2 × RJ45 female connectors (interfaces X1 and X2)
Supported Communication Protocols	Industrial Ethernet (PROFINET IO, EtherNet/IP, Modbus TCP, EtherCAT, CC-Link IE Field Basic)
Pneumatic Supply Connection (Port 1 / P)	D10 push-in coupling, nickel-plated brass
Pneumatic Working Connections (Ports 2, 4)	D6 push-in coupling, nickel-plated brass
AirLINE Quick Adapter Material	Anodised aluminium
Auxiliary Pilot Air Configuration	Internal supply
Intermediate Supply Modules	0 PCE (without intermediate air feed)
Operating Pressure Range	-1.0 bar to 10.0 bar (vacuum to 10 bar)
Auxiliary Pilot Pressure Range	3.0 bar to 10.0 bar
Nominal Air Flow Rate QNn	310 l/min (at +20 °C, 6 bar inlet, 1 bar pressure drop; ~3% flow reduction with HotSwap)
Valve Switching Time	Opening: 15 ms, Closing: 15 ms (measured per ISO 12238)
Operating Voltage	24 V DC (±10%, residual ripple max. 1 Vss)
Electrical Power per Valve Coil	0.7 W nominal (0.175 W after electronic power reduction)
Rated Current per Valve Coil	29 mA nominal (10 mA after power reduction)
Digital Inputs on Electronic Module	0 (without DI module)
Duty Cycle	100% ED continuous operation
Operating Medium	Dry, lubricated or non-lubricated compressed air, neutral gases (ISO 8573-1:2010 Class 7.4.4, 5 μm filter recommended)
Medium and Ambient Operating Temperature	-10 °C to +55 °C
Storage Temperature	-20 °C to +60 °C
Housing Materials	Polyamide (PA) body; NBR and PUR seals
Ingress Protection Rating	IP20 standalone; IP65 when mounted onto closed cabinet with AirLINE Quick plate
Electrical Safety Class	Class III according to DIN EN 61140, VDE 0140
Conformity & Certification	CE, UL Listed (UL 61010-1, CAN/CSA-C22.2 No. 61010-1), NEMA 250 Type 4X (in closed enclosure with stainless steel variant)

AirLINE Quick Cabinet Floor Adapter

AirLINE Quick allows direct fastening of the valve island to the floor or wall of the control cabinet. All pneumatic connection lines pass through the cabinet base, eliminating separate bulkhead pass-through fittings and external tubing inside the enclosure.

AirLINE Quick Features

• Space requirement reduction inside the control cabinet, facilitating smaller enclosure designs.
• Direct connection of pneumatic tubing to the cabinet base, reducing assembly and maintenance time.
• Dual seal arrangement protecting cabinet interior to IP65 standards.

Feature	AirLINE Quick Specification
Adapter Plate Material	Anodised aluminium (article 20139294 execution) or stainless steel 1.4301
Pneumatic Port Material	Nickel-plated brass (article 20139294 execution) or stainless steel 1.4401
Available Station Capacities	8, 16, 24, 32, 40, and 48 valve functions
Supply / Exhaust Ports	Push-in connector D10 mm (or 3/8")
Working Ports	Push-in connector D6 mm (or 1/4")
Mounting Position	Cabinet bottom or cabinet side wall

Pneumatic Circuit Functions and HotSwap

Type 8652 valve islands utilize Type 6534 pneumatic valves piloted by Type 6164 micro-solenoids. Article 20139294 is fitted with four circuit function C valves (3/2-way normally closed).

Circuit Function C (CF C)

Servo-assisted 3/2-way solenoid valve with manual override. In de-energised state, working port 2 is connected to exhaust duct 3, while supply port 1 remains closed. Energising the coil routes pilot air to open supply port 1 to working port 2.

Additional Circuit Functions Supported by Type 8652 Platforms

• Circuit Function C (2 × 3/2-way): Two independent 3/2-way normally closed valves in a single 11 mm slice.
• Circuit Function D (2 × 3/2-way): Two independent 3/2-way normally open valves.
• Circuit Function H (5/2-way): Single solenoid 5/2-way valve; pressurized via port 1, alternating pressure between ports 2 and 4.
• Circuit Function Z (5/2-way): Bistable pulse variant with two separate coils and manual override.
• Circuit Function L (5/3-way): Mid-position all ports closed (locked).
• Circuit Function M (5/3-way): Mid-position ports 2 and 4 ventilated (pressurized).
• Circuit Function N (5/3-way): Mid-position ports 2 and 4 exhausted.

Pneumatic HotSwap Function

The integrated HotSwap check mechanism in the subbase allows individual valves to be removed and replaced during live operation without depressurizing the main air header. Insertion of a replacement valve unseats the internal check seal, restoring supply to the valve slot. The presence of the HotSwap mechanism reduces nominal flow capacity by approximately 3%.

Dimensions and Cabinet Mounting

Mounting Dimensions for 4-, 8-, and 12-Slot Platforms

Variant	A (mm)	B (mm)	C	m	n
4-fold (Article 20139294)	66	—	4 × M5	3	1
8-fold	35	111	8 × M5	7	2
12-fold	77	154	10 × M5	11	3

Mounting may be carried out either on a standard DIN rail (EN 50022 35 × 7.5 mm or 35 × 15 mm) or fastened directly via M5 screws.

Installation Clearance for HotSwap

When installing the valve island inside an enclosure, maintain the minimum specified clearance between the front edge of the valve island and the cabinet door. This clearance ensures sufficient space to pivot and withdraw individual Type 6534 valves during live maintenance.

Electrical Power Supply and Fieldbus Interfaces

Type 8652 separates electronic control power from the pneumatic actuator coil power to support safety shutdowns and suppress switching transients.

Power Supply for Communication and Display (5-Pin Spring Terminal)

Pin	Wire Colour	Signal Assignment
1	Red	+24 V DC (logic power)
2	White	CAN_H (büS connection)
3	Green	SHIELDING
4	Blue	CAN_L (büS connection)
5	Black	0 V DC (GND)

Maximum cable cross-section: ≤ 1.5 mm².

Power Supply for Pneumatic Valves (2-Pin Spring Terminal)

Clip	Wire Colour	Signal Assignment
1	Red	AUX 24 V (valve coil supply)
2	Black	0 V DC (GND)

Independent Supply Requirement

The communication module electronics and the pneumatic solenoid valves must be supplied by independent circuits to permit unpowered actuator interlocks without disrupting network communication.

Industrial Ethernet Pinout (RJ45 Ports X1 and X2)

Pin	Industrial Ethernet Signal Assignment
1	TX+ (Transmit Data +)
2	TX- (Transmit Data -)
3	RX+ (Receive Data +)
4	N.C. (Not connected)
5	N.C. (Not connected)
6	RX- (Receive Data -)
7	N.C. (Not connected)
8	N.C. (Not connected)

System Architecture and Integration

Type 8652 incorporates an illuminated LC display that outputs diagnostic messages in clear text and graphic symbols, displaying channel status, supply voltage deviations, and cycle counters directly at the terminal.

In field topologies, an AirLINE Type 8652 equipped with an Industrial Ethernet gateway acts as the primary master station, communicating with PLC automation architectures while coordinating slave valve islands over büS/CANopen communication links.

Device configuration, cyclical process image parameterization, diagnostic logging, and firmware maintenance are conducted through Bürkert Communicator software (Type 8920) on the Efficient Device Integration Platform (EDIP).

Replacement Valves and System Accessories

Spare Valve Ordering Data for Type 8652 Platforms

Circuit Function	Nominal Width (mm)	QNn Air (l/min)	Pressure Range (bar)	Opening Time (ms)	Closing Time (ms)	Operating Voltage	Order Code (incl. screws)
CF C (3/2-way NC)	4	270	Vac to 10	15	15	24 V DC	20102334 (Spare kit: REF_20088974)
CF C (2 × 3/2-way NC)	4	270	Vac to 10	15	15	24 V DC	301374 (Spare kit: REF_296031)
CF D (2 × 3/2-way NO)	4	310	Vac to 10	15	15	24 V DC	301375 (Spare kit: REF_296032)
CF H (5/2-way)	4	290	Vac to 10	20	25	24 V DC	301376 (Spare kit: REF_296033)
CF Z (5/2-way impulse)	4	290	Vac to 10	20	25	24 V DC	301377 (Spare kit: REF_296034)
CF L (5/3-way locked)	4	275	Vac to 10	15	15	24 V DC	301380 (Spare kit: REF_296036)
CF M (5/3-way pressurized)	4	300	Vac to 10	20	20	24 V DC	301379 (Spare kit: REF_296035)
CF N (5/3-way exhausted)	4	300	Vac to 10	20	20	24 V DC	301381 (Spare kit: REF_296039)
Dummy Valve Slice	—	—	—	—	—	—	335779 (Spare kit: REF_327614)

AirLINE Quick Fastening Accessories (4-Slot Configuration)

• Screw set M5 × 10 A2 DIN 6912 (10 pcs): Article 308661
• Height adapter (4-fold base without intermediate supply): Article 60031491
• Retaining plate (for exterior cabinet mounting, 4-fold base): Article 60005571
• Blind plate (4-fold base without intermediate supply): Available on request
• 5-pin spring terminal plug (power/display): Article 920180
• 2-pin spring terminal plug (valves): Article 920442
• Bürkert Communicator USB-büS interface set 1 (Type 8923): Article 772426

Safety Instructions and Hazardous Location Conditions

Electrical Disconnection in Explosive Atmospheres

Do not connect or disconnect electrical wiring terminals when an explosive atmosphere is present. De-energize all circuits before servicing. Terminal connectors for 24 V DC power, SIA interlocks, EVS, and digital inputs may only be unplugged in de-energized conditions unless the area has been verified to be non-hazardous.

HotSwap in Hazardous Environments

HotSwap valve replacement must not be performed while a potentially explosive atmosphere is present. HotSwap procedures are permitted only when testing confirms that the ambient atmosphere is free of explosive gas or combustible dust concentrations.

Explosion Protection Standards

When ordered with Ex-protection options (code PX68 or PU17), Type 8652 complies with:

• ATEX: II 3G Ex ec IIC Gc / II 3D Ex tc IIIC Dc (Certificate BVS 20 ATEX E 031 U)
• IECEx: Ex ec IIC Gc / Ex tc IIIC Dc (Certificate IECEx BVS 20.0024 U)
• cULus HazLoc (PU17): Class I, Zone 2, AEx ec IIC Gc / Class II, Zone 22, AEx tc IIIC Dc; Class I, Division 2, Groups A, B, C, D; Class II/III, Division 2, Groups F, G
• CCC Ex: Certified according to GB/T 3836 series standards for hazardous industrial locations in China