BURKERT Type 8652 (article 20126827) is a high-density 24-bank AirLINE pneumatic valve island configured for process automation environments. This assembly integrates 24 valve slots, each populated with a dual 3/2-way normally closed solenoid valve (Circuit Function C), providing 48 independently actuated pilot functions within an 11 mm per station slice form factor. The unit incorporates 48 digital inputs distributed across six 8DI electronic modules, enabling direct feedback monitoring from process valves and limit switches without separate remote I/O blocks.

Pneumatic process interfacing is executed through a stainless steel 1.4301 AirLINE Quick adapter plate, featuring push-in connectors sized at D10 mm for main compressed air supply and D6 mm for working ports, combined with an intermediate feed module installed between stations. High-level fieldbus control is handled by an integrated multi-protocol Industrial Ethernet gateway supporting PROFINET IO, EtherNet/IP, Modbus TCP, EtherCAT, and CC-Link IE Field Basic over dual RJ45 ports.

Technical Specifications

Technical Parameter	Specification Value
Type	8652 AirLINE
Article Number	20126827
Total Valve Slots	24 slots (11 mm station width)
Valve Configuration	Slots 1 to 24: 2x 3/2-way CF-C (normally closed)
Total Actuated Valve Channels	48 channels
Digital Inputs	48 DI (6 modules x 8 DI channels)
Base Plate System	AirLINE Quick stainless steel 1.4301 adapter plate
Main Supply Connection (1/P)	D10 mm push-in connector, stainless steel 1.4401
Working Ports (2/A, 4/B)	D6 mm push-in connector, stainless steel 1.4401
Intermediate Supply Modules	1 PCE (middle and right D6/D10 push-in, left blank)
Auxiliary Pilot Air	Internal supply
Operating Pressure Range	Vacuum to 10 bar (-1.00 bar to 10.00 bar)
Auxiliary Pilot Pressure	3 bar to 10 bar
Nominal Air Flow Rate QNn	310 l/min reference (270 l/min per 2x 3/2-way CF-C valve)
Operating Voltage	24 V DC (±10%, residual ripple 1 Vss)
Nominal Power per Valve	0.7 W initial (0.175 W after electronic power reduction)
Nominal Current per Valve	29 mA initial (10 mA after holding current reduction)
Electrical Protection Class	Class III according to DIN EN 61140, VDE 0140
Operating Medium	Oil-free or lubricated dry compressed air, neutral gases
Compressed Air Quality	ISO 8573-1:2010, Class 7.4.4 (5 μm filtration recommended)
Ambient & Medium Temperature	-10 °C to +55 °C
Storage Temperature	-20 °C to +60 °C
Enclosure Rating	IP20 naked; IP65 in closed cabinet with AirLINE Quick
Type Rating (NEMA 250)	Type 4X in closed enclosures (with stainless steel plate)

AirLINE Quick Adapter Interface

AirLINE Quick enables direct mechanical mounting into the control cabinet floor or wall cutout. By seating the pneumatic bulkheads outside the enclosure, the system eliminates cabinet-internal tubing lines and reduces cabinet volume requirements.

Property	Detail
Adapter Plate Material	Stainless steel 1.4301
Push-in Connector Material	Stainless steel 1.4401
Pneumatic Supply / Exhaust Ports	Push-in D10 mm, G 3/8"
Pneumatic Working Ports	Push-in D6 mm, G 1/4"
Supported Valve Functions	8, 16, 24, 32, 40, and 48
Installation Position	Control cabinet bottom floor or cabinet side wall

Installation Advantage

AirLINE Quick provides ingress protection to IP65 / NEMA 4X at the enclosure interface while ensuring all pneumatic exhaust and working ports remain accessible from the cabinet exterior.

Circuit Function and Valve Population

Article 20126827 is populated with dual 3/2-way normally closed solenoid valves across all 24 slots. Each physical slice contains two servo-controlled valves operated by miniature Type 6164 pilot operators.

• Circuit Function C (CF C): 2x 3/2-way solenoid valve, servo-controlled, normally closed in de-energized state, equipped with manual override.
• Flow Performance: QNn nominal flow rate is 270 l/min per valve channel, measured at +20 °C with 6 bar inlet pressure and 1 bar pressure differential.
• Switching Dynamics: Response opening time is 15 ms; closing time is 15 ms in compliance with ISO 12238.

Replacement Valve Matrix (Type 6534)

Circuit Function	Nominal Diameter	QNn Air Flow	Pressure Range	Opening Time	Closing Time	Voltage	Order Article No.
CF C (2x 3/2-way NC, Standard)	4 mm	270 l/min	Vac. to 10 bar	15 ms	15 ms	24 V DC	301374 (Set 296031)
CF C (Single 3/2-way NC)	4 mm	270 l/min	Vac. to 10 bar	15 ms	15 ms	24 V DC	20102334 (Set 20088974)
CF D (2x 3/2-way NO)	4 mm	310 l/min	Vac. to 10 bar	15 ms	15 ms	24 V DC	301375 (Set 296032)
CF H (5/2-way monostable)	4 mm	290 l/min	Vac. to 10 bar	20 ms	25 ms	24 V DC	301376 (Set 296033)
CF Z (5/2-way bistable impulse)	4 mm	290 l/min	Vac. to 10 bar	20 ms	25 ms	24 V DC	301377 (Set 296034)
CF L (5/3-way mid-position closed)	4 mm	275 l/min	Vac. to 10 bar	15 ms	15 ms	24 V DC	301380 (Set 296036)
CF M (5/3-way mid-position ventilated)	4 mm	300 l/min	Vac. to 10 bar	20 ms	20 ms	24 V DC	301379 (Set 296035)
CF N (5/3-way mid-position exhausted)	4 mm	300 l/min	Vac. to 10 bar	20 ms	20 ms	24 V DC	301381 (Set 296039)
CF C SIA (Safety Shut-Off Variant)	4 mm	270 l/min	Vac. to 10 bar	15 ms	15 ms	24 V DC	338802 (Set 336443)
Dummy Valve Plate	—	—	—	—	—	—	335779 (Set 327614)

Digital Input Electronic Modules

The 48 digital inputs on article 20126827 are arranged into six 8DI electronic modules. These supply 24 V DC power directly to external sensors with current limited to 30 mA per input channel.

Technical Attribute	Specification Parameter
Module Designation	8DI Module (Article 384872)
Compatible Sensors	2-wire proximity sensors, 3-wire PNP sensors, mechanical limit switches
Switching Thresholds	V_OFF = 0 to 5 V; V_ON = 10 to 30 V
Input Current at V_ON	Max. 5.7 mA per channel (typical at 24 V DC)
Input Impedance	> 4 kΩ
Diagnostic Capabilities	Open-circuit detection (2-wire), short-circuit detection (3-wire)
Galvanic Isolation	No galvanic isolation; shared common reference potential
Maximum Cable Length	< 30 m
Terminal Wire Cross-Section	Pluggable screw terminal, 0.14 mm² to 1.5 mm² (AWG 28–16)

Sensor Signal Diagnostic Matrix

Process Signal / Status	3-Wire Sensor	2-Wire Sensor	Mechanical Limit Switch
Sensor Actuated	Yes	Yes	Yes
Sensor Not Actuated	Yes	Yes	Yes
Short-Circuit Fault	Detected	—	—
Wire-Break Fault	—	Detected	—

Electrical and Communication Interfaces

Article 20126827 separates power feeds for communication logic and pneumatic valve coils, enabling independent emergency shutdowns.

Power Supply Terminal Assignments

• Communication and LC Display: 5-pin spring-loaded terminal (Article 920180) accepts conductors up to 1.5 mm².
  • Pin 1 (Red): 24 V DC logic supply
  • Pin 2 (White): CAN_H (büS interface)
  • Pin 3 (Green): Cable Shielding
  • Pin 4 (Blue): CAN_L (büS interface)
  • Pin 5 (Black): 0 V DC (GND)
• Pneumatic Solenoid Coils: 2-pin spring-loaded terminal (Article 920442).
  • Terminal 1 (Red): AUX 24 V DC auxiliary valve supply
  • Terminal 2 (Black): 0 V DC (GND)

Industrial Ethernet Dual RJ45 Port (X1 and X2)

RJ45 Pin	Industrial Ethernet Signal Assignment
Pin 1	TX+ (Transmit Data +)
Pin 2	TX- (Transmit Data -)
Pin 3	RX+ (Receive Data +)
Pin 4	Not connected (N.C.)
Pin 5	Not connected (N.C.)
Pin 6	RX- (Receive Data -)
Pin 7	Not connected (N.C.)
Pin 8	Not connected (N.C.)

Dimensions and Control Cabinet Installation

For the 24-valve bank version with intermediate supply, dimensional planning must accommodate mounting pitch and hot swap clearance.

Variant Configuration	A [mm]	B [mm]	C [Holes]	D [mm]	m [Slices]	m' [Slices]	n [Slots]
24-fold with Intermediate Supply	156	312	10 x M5	158.3	11	11	6
20-fold with Intermediate Supply	134	268	10 x M5	158.3	11	7	5
16-fold with Intermediate Supply	112	224	10 x M5	114.3	7	7	4
24-fold without Intermediate Supply	143	286	10 x M5	—	23	—	6

To ensure proper valve insertion and extraction under maintenance, maintain the minimum specified clearance between the valve slice front edge and the cabinet door framing. DIN rail mounting is supported via EN 50022 35 x 7.5 or 35 x 15 rails.

System Architecture and Software Integration

Type 8652 operates as a communication hub within the Bürkert EDIP platform. When equipped with the Industrial Ethernet module, the valve terminal functions as an Ethernet master while orchestrating downstream büS slave valve blocks over its backplane.

• Bürkert Communicator (Type 8920): Connects to the service interface via USB büS interface set 1 (Article 772426) or Set 2 (Article 772551) to configure node addresses, download parameters, inspect live cycle counters, and perform firmware updates.
• Local LC Display: Visualizes valve channel status, supply air pressure levels, and diagnostic error codes in plain text and symbols.

Hazardous Location Approvals

Special Conditions for Safe Use in Hazardous Locations

• Under ATEX / IECEx Zone 2/22 and Class I, Div 2 installations, do not connect or disconnect electrical plug connectors or terminal blocks while circuits are energized.
• The valve terminal must be installed inside an enclosure providing a minimum ingress protection rating of IP54 for gas (Zone 2 / Ex ec) or IP6X for dust (Zone 22 / Ex tc).
• Hot swap valve replacement while energized is prohibited in hazardous explosive atmospheres unless verified safe by authorized atmospheric testing.

• ATEX Certificate: BVS 20 ATEX E 031 U — II 3G Ex ec IIC Gc / II 3D Ex tc IIIC Dc
• IECEx Certificate: IECEx BVS 20.0024 U — Ex ec IIC Gc / Ex tc IIIC Dc
• cURus HazLoc Approval: 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 Approval: Certified by SITIIAS according to GB/T 3836 standards for hazardous locations in China.

Accessories and Mounting Hardware

Accessory Description	Quantity	Order Article No.
Screw Set M5 x 10 A2 DIN 6912 (Fastening to Cabinet Base)	10 pcs	308661
Height Adapter for 24-fold Base with Intermediate Feed	1 pc	754964
Retaining Plate (External Cabinet Frame) for 24-fold with Feed	1 pc	60005570
Blind Plate for 24-fold Cutout with Intermediate Feed	1 pc	754969
5-Pin Spring-Loaded Terminal (Logic and Display Power)	1 pc	920180
2-Pin Spring-Loaded Terminal (Valve Auxiliary Power)	1 pc	920442
USB büS Interface Set 1 (Type 8923 with Communicator Stick)	1 set	772426
büS Terminating Resistor 120 Ω (M12 Plug)	1 pc	772424