BWU3899ASi-5 Module with integrated IO-Link Master with 4 Ports, IP67, M12, 4 IO-Link ports class A

Product description

ASi-5 Module with integrated IO-Link Master in IP67, with 4 x M12 sockets, 4 x IO-Link ports class A, sensor supply (IO-Link supply and input/output supply) out of AUX, periphery connection via 4 x M12 sockets, 5 poles, ASi connection via M12, 1 ASi-5 address

Technical data

Number of IO-Link Ports 4
IO-Link Port Class A

Port class A (M12): Pin 4 configurable (IO-Link/DI/DO), additional digital input at pin 2. Compatible with 3 pol IO-Link devices (M8).

Configurable conectors: Terminal assignment (C/Q, L+, L-, I) compatible with pin assigment of IO-Link port class A (M12). Connected IO-Link devices with port class B (M12) with a higher current consumption have to be supplied directly via a separate power supply. Compatible with 3 pol IO-Link devices (M8).


In addition to connecting IO-Link devices (Class A and/or Class B) to the ASi modules with integrated IO-Link masters, it is possible to process additional digital and/or analog I/O signals, depending on the design and configuration.

C/Q (configurable IO-Link ports): The C/Q connections (pin 4) of the IO-Link masters Class A and Class B can optionally be configured for IO-Link communication, as digital inputs or as digital outputs.

I/O (self-configuring digital inputs/outputs): The I/O connections (pin 2) of the IO-Link masters Class A are self-configuring connections that can optionally be used as additional digital inputs and/or digital outputs.

I (digital inputs): The I connections (pin 2) of the IO-Link masters Class A can be used as additional digital inputs.

AI (analog inputs): The I Sig+/24V connections of the IO-Link master Class A can be used as additional analog inputs (e.g. 4 ... 20 mA).

4 x C/Q + 4 x I
Sensor supply (IO-Link supply and input/output supply)

IO-Link and additional inputs/outputs are supplied by ASi or by AUX (auxiliary 24 V power). If supplied by ASi, inputs can neither be connected to earth nor to external potential.

out of AUX
Flat design, installation in cable duct possible

Modules with a flat housing design and with cables which exit the sides make these ideal for installation in cable ducts, cable channels, cable troughs, cable rails or cable trays. Please note the respective housing depth for your particular installation.

Connection 4 x M12 sockets, 5 poles
ASi connection

The connection to ASi as well to AUX (auxiliary 24 V power) is made via yellow resp. black ASi profile cable with piercing technology or via M12 socket (in IP20 via clamps).

Line protection: If the module is supplied via a M12 connection with A or B coding, it may only be used with a current load of max. 4 A per pin in acc. with IEC 61076-2-101 and IEC 61076-2-109. A fused tap is recommended. There is no such limitation for modules supplied via piercing contacts.

ASi via M12
ASi address

AB address (max. 62 AB addresses/ASi network), 2 AB addresses (max. 31 modules with 2 AB addresses), Single addresses (max. 31 Single addresses/ASi network), ASi-5 address (max. 62 ASi-5 addresses/ASi network), mixed use allowed.
For ASi modules with two ASi nodes the second Asi node is turned off as long as the first Asi node is addressed to address "0".
Upon request, ASi modules are available with specific ASi node profiles.

1 ASi-5 address

How to troubleshoot an existing ASi installation


    Device Description Files (GSD, EDS, ESI, SDD, etc.)

    The product has earned the following certifications: