BURKERT 20116568 (Type 8652) is a modular AirLINE Quick valve island designed to control pneumatic loads such as process valves and pneumatic actuators in automation environments. This specific configuration features 12 valve slots populated with 2x 3/2-way CF-C valves, integrated into an AirLINE Quick stainless steel adapter interface with D10 stainless steel supply connections and D6 stainless steel working ports. Communication is provided via a PROFIBUS DPV1 fieldbus module using a Sub-D 9-pin hardware interface.

The assembly operates with an internal auxiliary pilot air supply, handling a nominal process pressure from -1.00 bar to 10.00 bar and a pilot pressure between 3.00 bar and 10.00 bar. Rated for medium and ambient temperatures from -10 °C to +55 °C, the unit conforms to protection class IP20 and features the Basic variant architecture without a local digital display.

Technical Configuration and Specifications

Article 20116568 integrates the following factory configuration parameters:

Specification Parameter	Value
Type	8652
Article Number (SKU)	20116568
Product Variant	Basic (without display)
Modular Variant	Fieldbus module
Communication Protocol	PROFIBUS DPV1
Communication Interface Hardware	Sub-D 9-pin
Total Valve Slots	12 PCE
Valve Positions 1 to 12	2x 3/2-way CF-C (all 12 positions)
Supply Connection Size / Material	D10 / Stainless steel
Working Port Size / Material	D6 / Stainless steel
AirLINE Quick Interface Material	Stainless steel
Auxiliary Pilot Air	Internal
Additional Supplies (Left / Middle / Right)	Without
Nominal Pressure Min. / Max.	-1.00 bar / 10.00 bar (-1 bar to 10 bar)
Pilot Pressure Min. / Max.	3.00 bar / 10.00 bar (3 bar to 10 bar)
Medium Temperature Min. / Max.	-10.00 °C / +55.00 °C
Ambient Temperature Min. / Max.	-10.00 °C / +55.00 °C
Digital Inputs	0 (Electronic modules 1, 2, 3 without DI)
Integrated Check Valves in 3 (R) / 5 (S)	No / No
Pneumatic HotSwap in 1 (P)	No
Intermediate Feed Quantity	0 PCE
Maximum Protection Class	IP20 (with suitable connection)

Hazardous Area Explosion Protection

Type 8652 AirLINE valve islands comply with ATEX Directive 2014/34/EU and North American standards (NEC 500, NEC 505, NEC 506) when ordered with explosion protection codes PU17 or PX68. The unit is designed for use in hazardous areas under the following classifications:

• ATEX / IECEx: Group II, Category 3G Ex ec IIC Gc and Category 3D Ex tc IIIC Dc
• North America (Code PU17): Class I, Zone 2, AEx ec IIC Gc; Class II, Zone 22, AEx tc IIIC Dc; Class I, II, III, Division 2, Groups A, B, C, D, F, G
• Type Examination Certificates: BVS 20 ATEX E 031 U and IECEx BVS 20.0024 U, issued by DEKRA Testing and Certification GmbH (Fachstelle für Sicherheit elektrischer Betriebsmittel, BVS Bochum)
• Production Monitoring: PTB (Notified Body CE0102)
• CCC Ex Certification: Approved by SITIIAS according to GB/T 3836.2021

Definitions of Source Terms

Term	Meaning in Type 8652 Documentation
Actuators, process valves	Pneumatic loads controlled by the valve island
büS	Bürkert communication bus based on the CANopen protocol
EVS	External valve shutdown: valves can be de-energized independently of the bus master control signal on individual valves, modules, or the entire block
Hazardous area	Potentially explosive atmosphere
Device, valve island	Type 8652 AirLINE valve island
SIA version	Version for safety-related shutdown (see EVS)
Pneumatic valve, pilot control valve	Pneumatic spool valves integrated into the valve island assembly

Nameplate Layout and Markings

Valve islands designated for hazardous locations carry two nameplates: a standard product nameplate and an Ex certification nameplate.

Position	Description	Example Data
1	Device type	Type 8652 AirLINE
2	Pressure range	3–10 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 0 (example)
6	Manufacturing code (encoded)	W14AL (example)
7	Device order number	Article number (e.g., 20116568)

Position	Description	Value (Code PX68)
1	Explosion protection symbol	Ex marking
2	ATEX certificate number	BVS 20 ATEX E 031 U
3	ATEX gas / dust protection marking	II 3G Ex ec IIC Gc / II 3D Ex tc IIIC Dc
4	IECEx certificate number	IECEx BVS 20.0024 U
5	IECEx gas / dust protection marking	Ex ec IIC Gc / Ex tc IIIC Dc
6	Safety advisory	Electrical connection and HotSwap conditions

Position	Description	Value (Code PU17)
1	Zone marking US/CA (Gas)	Cl I, ZN 2, AEx ec IIC Gc / Ex ec IIC Gc U
2	Zone marking US/CA (Dust)	Cl II ZN 22, AEx tc IIIC Dc / Ex tc IIIC Dc U
3	Division marking US/CA (Gas/Dust)	Cl I, Div 2, Gr A, B, C, D / Cl II, III, Div 2, Gr F, G
4	ATEX certificate number	BVS 20 ATEX E 031 U
5	Explosion protection symbol	Ex marking
6	ATEX gas / dust protection marking	II 3G Ex ec IIC Gc / II 3D Ex tc IIIC Dc
7	IECEx certificate number	IECEx BVS 20.0024 U
8	IECEx gas / dust protection marking	Ex ec IIC Gc / Ex tc IIIC Dc
9	Safety advisory	Electrical connection and HotSwap conditions

Additional Warning Label

Shipments include duplicate adhesive labels marked: WARNING DO NOT CONNECT OR DISCONNECT WHEN ENERGIZED If cabinet installation obscures the safety information on the primary Ex nameplates, affix this additional label in a clearly visible position on the valve island.

Operating Conditions and Thermal Limits

Parameter	Specification
Rated Operating Voltage	24 V DC ±10%
Nominal Power Consumption	Dependent on configuration
Ambient Temperature Range	-10 °C to +55 °C
Pilot Solenoid Valve Type	Type 6164 (pilot element for Type 6534 pneumatic valve)
Maximum Number of Valve Slice Functions	48 functions

When a configuration uses fewer than 48 valve slice functions, the converted electrical power is lower, resulting in equal or lower operating temperatures.

At a maximum ambient temperature of +55 °C inside the control cabinet, the system does not exceed the limits of temperature class T4. When the AirLINE Quick adapter interface is mounted through the cabinet wall or bottom plate, the external surface operating temperature does not exceed 80 °C.

Permissible configurations in hazardous areas include up to 48 valve slice functions using Type 6534 or Type 6534 SIA valves, external valve shutdown (EVS), electronic modules with digital inputs, and connection modules with integrated pressure sensors.

Safety Instructions and Special Conditions of Use

Cabinet Installation Requirements

For installation in hazardous areas, Type 8652 must be installed inside a certified enclosure:

• For protection type "ec" (Category 3G / Gc): enclosure must meet EN/IEC 60079-0 and EN/IEC 60079-7 with minimum protection class IP54.
• For protection type "tc" (Category 3D / Dc): enclosure must meet EN/IEC 60079-0 and EN/IEC 60079-31 with minimum protection class IP6X (minimum IP64).
• Enclosures must be sufficiently sized to dissipate generated heat. Control cabinet internal temperature must not exceed +55 °C.
• Outdoor use is prohibited.

Electrical Isolation in Explosive Atmospheres

To prevent electrical ignition hazards:

• Disconnect power and secure against reconnection before performing any work.
• Connection terminals for 24 V power supply, SIA, EVS, and digital inputs must only be plugged or unplugged when de-energized, unless the atmosphere is verified as non-explosive using approved test equipment.
• Fixed cable connectors plugged into the terminal blocks must only be connected or disconnected when completely de-energized.
• Transient protection must be set to ensure peak overvoltage does not exceed 140% of the nominal peak supply voltage.
• The equipment must only be operated in environments with a pollution degree of at least 2 in accordance with IEC 60664-1.

HotSwap Restrictions

The HotSwap function is prohibited in potentially explosive atmospheres unless an explosive atmosphere is verified absent by suitable testing equipment. Article 20116568 is configured without pneumatic HotSwap in port 1 (P).

Electrostatic Protection and Mechanical Handling

Sudden electrostatic discharge poses an ignition hazard in potentially explosive atmospheres. Clean external surfaces only with a damp or anti-static cloth. Do not apply mechanical loads or use the valve island assembly as a step. Repairs must be conducted exclusively by the manufacturer.