BURKERT 20114261 (Type 8652 AirLINE) is a modular 24-slot pneumatic valve island configured with a PROFIBUS DPV1 communication interface, an anodised aluminium AirLINE Quick adapter plate, and 24 double 3/2-way normally open (Circuit Function D) solenoid valve slices. Designed specifically for control cabinet integration in process automation, the system operates across a nominal working pressure range of -1 bar to 10 bar with pilot air pressure between 3 bar and 10 bar, accommodating medium and ambient operating temperatures from -10 °C to +55 °C.

Process safety and system availability are supported by mechanical and pneumatic features built directly into the manifold block. Integrated check valves in exhaust ducts 3 (R) and 5 (S) prevent back-pressure peaks and unintentional actuation of linked pneumatic actuators. Furthermore, integrated pneumatic HotSwap functionality at air supply port 1 (P) enables live replacement of individual valve slices under pressure without interrupting the rest of the manifold stations.

Technical Specifications

Specification Group	Parameter	Factory Value (Order Code 20114261)
Identity	Type	8652 AirLINE
Identity	Article No. (SKU)	20114261
Valve Configuration	Number of Valve Slots	24 stations (PCE)
Valve Configuration	Valve Positions 1 to 24	2x 3/2-way Circuit Function D (Normally Open)
Valve Configuration	Nominal Orifice per Valve	4.0 mm
Pneumatics	Main Air Supply Port	Push-in connector D10 mm (Brass)
Pneumatics	Working Ports (2 & 4)	Push-in connector D6 mm (Brass)
Pneumatics	Auxiliary Pilot Air Feed	Internal
Pneumatics	Additional Supply Right / Left	Push-in connector D6 and D10 mm
Pneumatics	Intermediate Feed Quantity	1 PCE (integrated feed block)
Pneumatics	Nominal Pressure Range	-1.0 bar to 10.0 bar
Pneumatics	Auxiliary Pilot Pressure Range	3.0 bar to 10.0 bar
Pneumatics	Flow Rate QNn (Air)	310 l/min (reduced by approx. 3% with HotSwap)
Pneumatics	Operating Medium	Compressed dry air (lubricated or oil-free, Class 7.4.4 per ISO 8573-1:2010), neutral gases
Safety Features	Exhaust Port 3 (R) & 5 (S)	Integrated check valves
Safety Features	Supply Port 1 (P)	Pneumatic HotSwap non-return shut-off
Electrical Data	Operating Voltage	24 V DC (±10%, residual ripple 1 Vss)
Electrical Data	Nominal Power per Valve	0.7 W initial (0.175 W after electronic power reduction)
Electrical Data	Nominal Current per Valve	29 mA initial (10 mA after electronic power reduction)
Electrical Data	Duty Cycle	Continuous operation (100% ED)
Fieldbus Communication	Fieldbus Protocol	PROFIBUS DPV1
Fieldbus Communication	Hardware Interface	Sub-D 9-pin socket
Physical Envelope	Protection Class	IP20 (Type Rating 4X inside sealed enclosure with stainless base)
Physical Envelope	Base Adapter Plate	AirLINE Quick (Anodised aluminium)
Temperature Limits	Ambient & Medium Operating Temp	-10 °C to +55 °C
Temperature Limits	Permissible Storage Temp	-20 °C to +60 °C

AirLINE Quick Cabinet Floor Interface

AirLINE Quick allows direct flush mounting of the valve terminal into a control cabinet cutout on the floor or side wall. This arrangement places all pneumatic push-in hose connections outside the cabinet enclosure, eliminating intermediate bulkheads and internal piping while reducing required cabinet volume.

Property	AirLINE Quick Configuration (20114261)
Adapter Plate Material	Anodised aluminium
Pneumatic Fitting Material	Nickel-plated brass
Supply / Exhaust Ports	Push-in D10 mm
Working Ports	Push-in D6 mm
Terminal Mounting Position	Control cabinet floor or control cabinet wall

Electrical and Fieldbus Connections

BURKERT 20114261 utilizes a Sub-D 9-pin female connector for PROFIBUS DPV1 communication alongside spring-loaded terminal connectors for electronic logic and solenoid valve power.

PROFIBUS DPV1 Sub-D 9-Pin Pinout

Pin	Signal	Description
1	SHIELDING	Cable shielding connection
2	M24	Ground 24 V (optional)
3	RxD/TxD-P	Receive / Transmit data positive (B-line)
4	CNTR-P	Repeater control signal positive (optional)
5	DGND	Data ground (reference potential for terminating resistor)
6	+5 V	Supply voltage (+5 V) for terminating resistor network
7	+24 V	Supply 24 V (optional)
8	RxD/TxD-N	Receive / Transmit data negative (A-line)
9	CNTR-N	Repeater control signal negative (optional)

Power Supply Terminals

Power supply circuits are split between bus communication/display logic and the valve manifold outputs. Connection wiring is established through cage-clamp spring-loaded blocks accommodating conductor cross-sections up to 1.5 mm²:

• 5-Pin Spring Terminal (Communication & Display): Pin 1 (Red) = 24 V DC, Pin 2 (White) = CAN_H (büS connection), Pin 3 (Green) = SHIELDING, Pin 4 (Blue) = CAN_L (büS connection), Pin 5 (Black) = GND.
• 2-Pin Spring Terminal (Pneumatic Valve Actuation on Interface Plate): Terminal 1 (Red) = AUX 24 V, Terminal 2 (Black) = GND.

Solenoid Valve Configuration (Circuit Function D)

All 24 valve positions are populated with Type 6534 double 3/2-way servo-controlled solenoid valve slices in Circuit Function D (normally open, with manual override). Each slice contains two independent pilot actuators powered by Type 6164 pilot solenoids.

Parameter	Value
Circuit Function	CF D (2x 3/2-way, servo-controlled, normally open)
Nominal Diameter (DN)	4.0 mm
Flow Rate QNn (Air)	310 l/min
Pressure Range	Vacuum to 10 bar (with auxiliary pilot air 3 to 10 bar)
Valve Switching Time (Opening)	15 ms (measured per ISO 12238)
Valve Switching Time (Closing)	15 ms (measured per ISO 12238)
Operating Voltage	24 V DC (100% continuous duty cycle)
Replacement Valve Article No.	301375 (spare part kit reference REF_296032)

Integrated Exhaust Check Valves

The exhaust channels 3 (R) and 5 (S) contain factory-fitted integrated check valves. These prevent sudden exhaust pressure surges generated by large process valves from cycling back into unactuated circuits and causing unintended movements.

Dimensions and Installation Guidelines

BURKERT 20114261 is a 24-fold assembly equipped with an intermediate supply block. Mounting holes are formatted according to the AirLINE Quick interface layout.

Dimensional Table for Variant with Intermediate Supply

Variant	A (mm)	B (mm)	C (Mounting Screws)	D (mm)	m	m'	n
16-fold with intermediate supply	112	224	10 x M5	114.3	7	7	4
20-fold with intermediate supply	134	268	10 x M5	158.3	11	7	5
24-fold with intermediate supply (20114261)	156	312	10 x M5	158.3	11	11	6

HotSwap Installation Clearance

When mounting inside an enclosure, maintain a minimum physical clearance between the valve island and the control cabinet door or front wall. This ensures sufficient mechanical clearance to withdraw, unclip, and replace a Type 6534 valve slice while the island remains under supply air pressure.

Hazardous Area Approvals and Operating Conditions

Type 8652 valve islands are certified for use in potentially explosive atmospheres under European, international, and regional directives when properly enclosed.

Directive / Certification	Marking Code	Certificate Number
ATEX (Gas)	II 3G Ex ec IIC Gc	BVS 20 ATEX E 031 U
ATEX (Dust)	II 3D Ex tc IIIC Dc	BVS 20 ATEX E 031 U
IECEx (Gas & Dust)	Ex ec IIC Gc / Ex tc IIIC Dc	IECEx BVS 20.0024 U
North America (HazLoc)	Class I, Zone 2, AEx ec IIC Gc / Ex ec IIC Gc U; Class II, Zone 22, AEx tc IIIC Dc; Class I Div 2 Gr A, B, C, D; Class II, III Div 2 Gr F, G	cURus (PU17 code)
China Compulsory Certification	Ex ec IIC Gc / Ex tc IIIC Dc	SITIIAS / CCC (GB/T 3836)

Hazardous Area Installation Conditions

• For protection type "ec" (gas), install the unit inside an enclosure meeting EN/IEC 60079-0 and EN/IEC 60079-7 with an ingress rating of at least IP54.
• For protection type "tc" (dust), install inside an enclosure meeting EN/IEC 60079-0 and EN/IEC 60079-31 with a rating of at least IP6X.
• Use the terminal only in environments with a pollution degree of at least 2 according to IEC 60664-1.
• Supply transient protection must not exceed 140% of the nominal peak voltage.

Live Disconnection and HotSwap in Hazardous Atmospheres

Do not connect or disconnect electrical wiring terminals when energized in an explosive atmosphere. The pneumatic HotSwap feature must not be used while an explosive atmosphere is present unless the area has been verified and continuously monitored to be non-hazardous by qualified personnel.

System Accessories and Replacement Parts

Accessory Description	Specification	Article No.
Replacement Valve Slice	Solenoid valve Type 6534, 2x 3/2-way CF-D, 24 V DC	301375 (REF_296032)
Base Mounting Screw Set	M5 x 10 A2 DIN 6912 (10 pieces per pack)	308661
Height Adapter Plate	24-fold AirLINE Quick with intermediate supply	754964
Retaining Plate (Cabinet Exterior)	24-fold AirLINE Quick with intermediate supply	60005570
Blanking / Blind Plate	24-fold AirLINE Quick with intermediate supply	754969
5-Pin Spring Terminal	Power supply plug for bus communication and displays	920180
2-Pin Spring Terminal	Power supply plug for pneumatic valve circuits (AUX 24 V)	920442
Gateway Module	Fieldbus gateway Type ME43 (PROFIBUS DP)	301803
Commissioning Tool Set	USB büS interface set 1 (Type 8923) for Bürkert Communicator	772426