BURKERT 20115983 (Type 8652) is a 16-slot AirLINE electropneumatic valve island engineered for process automation, featuring an AirLINE Quick anodised aluminium baseplate and multi-protocol Industrial Ethernet connectivity. All 16 valve slots are populated with Type 6534 SIA dual 3/2-way normally closed solenoid valves (circuit function C), providing 32 independently controllable pilot channels with external potential-free safety shut-off capability. The unit incorporates integrated check valves in exhaust ducts 3 (R) and 5 (S) to eliminate back-pressure actuation, alongside a pneumatic HotSwap mechanism in supply port 1 (P) that allows valve maintenance during active system operation.

Communication is managed via an integrated ME43 fieldbus gateway equipped with two RJ45 Ethernet ports, supporting PROFINET IO, EtherNet/IP, Modbus TCP, EtherCAT, and CC-Link IE Field Basic. Process and diagnostic statuses are displayed locally on a backlit LC display in plain text and symbols, while cyclic and acyclic operational data can be transferred to the central PLC and the Bürkert Communicator software.

Technical Specifications

Parameter	Specification
Product Type	Type 8652 AirLINE valve terminal
Article Number	20115983
Number of Valve Slots	16 stations
Equipped Valve Variants	16x Type 6534 SIA (2x 3/2-way CF-C, normally closed)
Width per Valve Station	11 mm
Body Material	Polyamide (PA)
Sealing Materials	Nitrile rubber (NBR), Polyurethane (PUR)
Adapter Plate Material	Anodised aluminium (AirLINE Quick)
Pneumatic Port Materials	Nickel-plated brass push-in connectors
Supply Port 1 (P)	Push-in connector D10 mm
Working Ports 2 and 4	Push-in connectors D6 mm
Intermediate Supply Feed	1 integrated intermediate supply module
Operating Pressure Range	-1.00 bar to 10.00 bar (vacuum to 10 bar)
Pilot Pressure Range	3.0 bar to 10.0 bar (internal auxiliary pilot air)
Nominal Flow Rate QNn (Air)	310 l/min (measured at +20 °C, 6 bar inlet, 1 bar Δp)
Flow Rate with HotSwap	Approx. 3% flow reduction
Operating Voltage	24 V DC (±10%, residual ripple 1 Vss)
Nominal Power per Valve	0.7 W (drops to 0.175 W after internal power reduction)
Nominal Current per Valve	29 mA (drops to 10 mA after power reduction)
Electrical Protection Class	Class III according to DIN EN 61140, VDE 0140
Operating Medium	Compressed dry air (lubricated or oil-free), neutral gases
Compressed Air Quality	ISO 8573-1:2010, Class 7.4.4 (5 µm filtration recommended)
Ingress Protection Rating	IP20 naked; IP65 mounted in closed control cabinet via AirLINE Quick
Ambient & Medium Temperature	-10 °C to +55 °C
Storage Temperature	-20 °C to +60 °C
Fieldbus Interface	Industrial Ethernet (PROFINET IO, EtherNet/IP, Modbus TCP, EtherCAT, CC-Link IE Field Basic) via 2x RJ45

AirLINE Quick Aluminium Adapter Plate

The AirLINE Quick adapter plate allows direct cut-out mounting of the valve terminal onto the bottom floor or side wall of a control cabinet. All pneumatic lines connect externally from outside the enclosure, eliminating bulkheads, internal tubing bundles, and cabinet space requirements.

Component / Feature	Material / Value
Adapter Plate	Anodised aluminium
Working Port Connections	Push-in D6 mm, nickel-plated brass
Supply / Exhaust Connections	Push-in D10 mm, nickel-plated brass
Mounting Location	Control cabinet floor or control cabinet wall
Ingress Rating on Enclosure	IP65 according to EN 60529 when installed in sealed cabinet

Valve Configuration and Safety Shut-off (SIA)

Article 20115983 is factory-fitted with 16 pilot valves of Type 6534 SIA. Each valve houses two servo-assisted 3/2-way normally closed valves (CF-C) actuated by integrated 6164 pilot solenoids. Manual override is omitted on SIA models to prevent inadvertent local bypass of safety circuits.

Each Type 6534 SIA valve station includes a dedicated 2-pin coded screw terminal on top of the valve housing. This connection breaks the valve coil circuit independently of the PLC bus master when wired through a potential-free contact, safety relay, or emergency stop switch.

Safety Shut-off (SIA / EVS) Wiring

On factory delivery, each SIA terminal block is fitted with a conductive bridge allowing standard operation. Remove the bridge before connecting external safety wiring. The external potential-free contact must provide a switching capacity of at least 0.5 A at 24 V DC. Terminal blocks accept rigid or flexible conductors from 0.14 mm² to 1.5 mm² (AWG 28–16).

Integrated pneumatic safety features:

• Pneumatic HotSwap in port 1 (P): Integrated check check mechanism seals the supply line automatically when a valve is unbolted, permitting replacement under line pressure with an overall flow reduction of roughly 3%.
• Integrated check valves in ports 3 (R) and 5 (S): Prevent exhaust pressure spikes caused by parallel valve actuation from venting backwards into inactive actuator chambers.

Electrical Interfaces and Industrial Ethernet

Electrical supply is split into separate circuits on the interface board: one for gateway logic and display power, and an isolated supply for valve coils. This separation ensures that safety shutdowns of the valve coil bus do not drop network communication or LC display diagnostics.

Interface	Connector Type	Pin / Color	Assignment
Logic & Display Power	5-pin spring terminal (≤ 1.5 mm²)	Red White Green Blue Black	+24 V DC (electronic supply) CAN_H (internal büS) Shielding CAN_L (internal büS) 0 V DC (GND)
Valve Actuation Power	2-pin spring terminal (≤ 1.5 mm²)	1 (Red) 2 (Black)	AUX +24 V DC (valve supply) GND (0 V DC)
Ethernet Port X1	RJ45 shielded socket	1 2 3 4, 5, 7, 8 6	TX+ TX- RX+ Not connected RX-
Ethernet Port X2	RJ45 shielded socket	1 2 3 4, 5, 7, 8 6	TX+ TX- RX+ Not connected RX-

Dimensions and Cabinet Installation

For the 16-slot variant with an intermediate supply module, dimensions follow the 16-fold intermediate feed chassis specifications:

Dimension Variable	16-Slot with Intermediate Supply Module
A (Mounting spacing)	112 mm
B (Total base width)	224 mm
C (Cabinet base drillings)	10x M5
D (Intermediate module offset)	114.3 mm
m (Valve positions, section 1)	7
m' (Valve positions, section 2)	7
n (Standard rail clamping clips)	4

Installation Clearance

Maintain adequate clearance between the front edge of the valve island and the control cabinet door or adjacent components. This distance ensures that valve modules can be unlatched and replaced vertically without dismantling adjacent equipment.

System Networking and Software

Article 20115983 acts as an Industrial Ethernet network master valve island. Downstream Type 8652 islands fitted with büS/CANopen communication can be daisy-chained as slave islands via the büS service interface, consolidating up to several dozen pneumatic stations under a single IP network node.

Device configuration, diagnostics, and parameter backup are handled through Bürkert Communicator software (Type 8920) connected via a USB-to-büS adapter kit (article 772426). The software enables live graphical process monitoring, address mapping, firmware upgrades, and complete hardware configuration cloning.

Approvals and Hazardous Location Operating Conditions

Article 20115983 complies with the following regional standards and explosion protection approvals:

• cULus Listed: Electrical equipment for measurement, control, and laboratory use per UL 61010-1 and CAN/CSA-C22.2 No. 61010-1.
• ATEX / IECEx Zone 2/22: BVS 20 ATEX E 031 U / IECEx BVS 20.0024 U; II 3G Ex ec IIC Gc and II 3D Ex tc IIIC Dc.
• cURus HazLoc (USA / Canada): 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.
• CCC (China): Certified explosion-proof product under Chinese national GB/T 3836 series standards for hazardous industrial locations.

Hazardous Area Operational Restrictions

• In explosive atmospheres, disconnect all circuits (24 V DC power, SIA circuits, Ethernet connections) before inserting or unplugging terminal connectors.
• HotSwap valve replacement under pressure is prohibited inside hazardous locations unless the area has been verified by atmospheric measurement to be free of combustible gases or dusts.
• The valve island must be housed in an enclosure meeting at least IP54 for gas protection (Ex ec) and IP6X for dust protection (Ex tc) according to EN/IEC 60079-0, EN/IEC 60079-7, and EN/IEC 60079-31.

Ordering Information and Replacement Components

Article / Component	Specification / Description	Article No.
Type 8652 Valve Island	16-bank ALQ AL, 16x 2x 3/2-way CF-C SIA, D10/D6 brass, Industrial Ethernet RJ45	20115983
Replacement Valve Type 6534 SIA	Dual 3/2-way CF-C normally closed, SIA terminals, 24 V DC, including screws	338802 (REF_336443)
Standard Valve Type 6534	Dual 3/2-way CF-C normally closed, standard manual override, 24 V DC	301374 (REF_296031)
Dummy Valve Plate	Blanking plate for unused valve slots	335779 (REF_327614)
5-Pin Spring Terminal Plug	Connects 24 V DC electronic power and internal büS line	920180
2-Pin Spring Terminal Plug	Connects AUX 24 V DC pneumatic valve supply	920442
ME43 Fieldbus Gateway Module	Industrial Ethernet replacement module (PROFINET, EtherNet/IP, Modbus TCP, EtherCAT)	301799
AirLINE Quick Height Adapter	16-slot chassis with intermediate feed	754962
AirLINE Quick Retaining Plate	16-slot chassis with intermediate feed (cabinet exterior)	60005568
AirLINE Quick Blind Plate	16-slot chassis with intermediate feed	754967
Fastening Screw Set	M5x10 A2 DIN 6912 stainless steel screws (pack of 10)	308661
USB büS Interface Set 1	Type 8923 programming adapter kit (cable, terminator stick, power pack)	772426