BURKERT 20087556 (Type 8652 AirLINE) is an electro-pneumatic modular valve island designed to pilot and control pneumatic loads such as process valves and actuators in automation architectures. The 20087556 configuration integrates a 4-slot valve base with an aluminium AirLINE Quick interface, external pilot air routing, and multi-protocol Industrial Ethernet connectivity terminating in RJ45 ports.

Hardware Setup and Port Allocation

Model 20087556 provides 4 modular valve slots preconfigured with two pneumatic valves and two blanking positions. Pneumatic lines terminate via push-in connections built from brass, while mechanical docking through control cabinet walls is established by the aluminium AirLINE Quick adapter.

Setup Parameter	Configuration Value
Total Valve Slots	4 PCE
Valve Position 1	2x 3/2-way CF-C
Valve Position 2	Blind plate
Valve Position 3	2x 3/2-way CF-D
Valve Position 4	Blind plate
Supply Connection	D10 (Brass)
Working Ports	D6 (Brass)
AirLINE Quick Material	Aluminium
Auxiliary Pilot Air	External supply
Additional Supplies (Left / Middle / Right)	Without additional feed
Intermediate Feed Quantity	0 PCE
Integrated Check Valves (Ports 3/R and 5/S)	No
Pneumatic HotSwap in Port 1 (P)	No
Digital Inputs	0 (No DI electronic module)

Pneumatic and Electrical Specifications

AirLINE Type 8652 operates across positive and partial-vacuum process pressures, utilizing Type 6164 pilot solenoid valves as pilot actuators on Type 6534 pneumatic directional spool valves.

Specification Parameter	Value Range
Nominal Operating Pressure	-1.00 bar to 10.00 bar
External Pilot Air Pressure	3.00 bar to 10.00 bar
Medium Temperature Range	-10.00 °C to +55.00 °C
Ambient Temperature Range	-10.00 °C to +55.00 °C
Nominal Supply Voltage	24 V DC (±10%)
Maximum Current Consumption	3 A (typical marking reference)
Maximum Valve Functions per Base Family	Up to 48 valve functions
Basic Ingress Protection	IP20 (with appropriate connection)

Communication and Network Integration

BURKERT 20087556 incorporates a dedicated fieldbus communication module supporting real-time Industrial Ethernet standards over RJ45 physical media. Supported network protocols include:

• PROFINET IO
• EtherNet/IP
• Modbus TCP
• EtherCAT
• CC-Link IE Field Basic

Internal communication across the valve manifold utilizes büS, a CANopen-based internal system bus developed by Bürkert for valve island diagnostics and status transmission.

Hazardous Area Approval and Rating Data

Type 8652 valve islands certified for potentially explosive atmospheres carry two nameplates defining general operational parameters and explosion-proof ratings. Ex certification is valid only when Bürkert-authorized Type 6164 and Type 6534 components are maintained.

Position	Description	Indicated Data
1	Device Type	Type 8652 AirLINE
2	Pressure Range	3 to 10 bar
3	Ambient Temperature Range	-10 °C to +55 °C
4	Rated Voltage / Current Consumption	24 V DC / 3 A
5	Serial Number	S/N (factory encoded)
6	Manufacturing Code	W14AL (factory encoded)
7	Device Order Number	Ident 20087556

Explosion Markings for Code PX68

• ATEX Certificate: BVS 20 ATEX E 031 U
• ATEX Gas / Dust Marking: II 3G Ex ec IIC Gc / II 3D Ex tc IIIC Dc
• IECEx Certificate: IECEx BVS 20.0024 U
• IECEx Marking: Ex ec IIC Gc / Ex tc IIIC Dc
• CCC Certification: GB/T 3836.2021 audited by SITIIAS; PTB (CE0102) production monitoring

Explosion Markings for Code PU17 (North American Ratings)

• Class I, Zone 2, AEx ec IIC Gc / Ex ec IIC Gc U
• Class II, Zone 22, AEx tc IIIC Dc / Ex tc IIIC Dc U
• Class I, Division 2, Groups A, B, C, D
• Class II/III, Division 2, Groups F, G

Control Cabinet and Enclosure Requirements

Enclosure Protection Limits

Type 8652 has an open rating of IP20. When operated in hazardous areas, install the unit in a certified enclosure or control cabinet meeting the following ratings:

• Category 3G / Zone 2: Minimum IP54 enclosure rating per EN/IEC 60079-0 and EN/IEC 60079-7 ("ec" protection type).
• Category 3D / Zone 22: Minimum IP64 / IP6X enclosure rating per EN/IEC 60079-0 and EN/IEC 60079-31 ("tc" dust ignition protection).
• Operating Environment: Pollution degree 2 or better per IEC 60664-1. Outdoor operation is prohibited.

Cabinet internal dimensions must ensure sufficient heat dissipation so the maximum allowable ambient temperature (+55 °C) is not exceeded. At +55 °C internal cabinet temperature, the assembly remains within temperature class T4 limits. When utilizing the AirLINE Quick interface through the cabinet wall, the outer surface operating temperature does not exceed +80 °C.

Wiring and Operational Safety Restrictions

Terminal and Connector Disconnection

Transient voltage protection must prevent line spikes from exceeding 140% of the peak rated voltage at the power input. Within explosive atmospheres, connecting or disconnecting terminal connectors for 24 V DC supply, SIA (Safety Shutdown), EVS (External Valve Shutdown), or digital inputs while energized is strictly prohibited.

Disconnect all circuits and ensure zero-voltage status before unplugging terminals or cable connectors, unless the area is confirmed non-hazardous using verified testing instruments.

HotSwap Restriction

HotSwap valve replacement under energized conditions is forbidden in explosive atmospheres. Removal or insertion of pneumatic valve modules is permitted only when the local atmosphere has been proven non-explosive by authorized monitoring devices.