ASi Safety I/O Modules - Bihl+Wiedemann GmbH

Bihl+Wiedemann offers the right module for accessing any safety input signal. Both control cabinet modules (IP20) and field modules (IP67) are available. From a single safety input or output to safety multi-I/O modules we offer the right ASi modul for your requirements. Many of our modules also include available outputs for standard signals.

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Safety I/O Modules: Input/output modules, IP20

All Safety I/O Modules: SIL 3, Cat. 4, PLe
Compact form factor
Safety inputs
Safety outputs
Additional standard inputs and standard outputs

Inputs Safety, SIL 3, Cat. 4	Safety signal inputs	Outputs Safety, SIL 3, cat. 4	inputs are supplied by ASi or by AUX (auxiliary 24 V power). If supplied by ASi, inputs shall not be connected to earth or to external potential. Input voltage (sensor supply)	Electronic outputs are supplied by ASi or by AUX (auxiliary 24 V power). If supplied by ASi, outputs shall not be connected to earth or to external potential. For relay outputs the relay contacts are initiated from ASi. The load circuit is powered externally as specified in the data sheet. Output voltage (actuator supply)	Length of connector cable	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. ASi address	Article No.
8 x 2 channels	floating contacts, optoelectronic protective devices, complementary switch	1 release circuit, 1 x electronic safe outputs, augmented reliability	out of AUX	out of AUX	unlimited	depending on configuration, optimised for ASIMON360	BWU3428ASi Safety I/O Module, IP20, 8SI/1SO
6 x 2 channels	floating contacts, optoelectronic protective devices, complementary switch	2 release circuits, 2 x electronic safe outputs, augmented reliability	out of AUX	out of AUX	unlimited	depending on configuration, optimised for ASIMON360	BWU3883ASi Safety I/O Module, IP20, 6SI/2SO/2EDM
4 x 2 channels	floating contacts, optoelectronic protective devices, complementary switch	2 release circuits, 2 x electronic safe outputs, augmented reliability	out of AUX	out of AUX	unlimited	depending on configuration, optimised for ASIMON360	BWU3427ASi Safety I/O Module, IP20, 4SI/2SO
1 x 2 channels	floating contacts	1 release circuit, 2 x relay	out of AUX	-	unlimited	2 Single addresses + 1 AB address	BWU2236ASi Safety I/O Module, IP20, 1SI/1SRO/1EDM
2 x 2 channels	floating contacts, complementary optoelectronic protective devices	-	out of AUX	-	unlimited	2 Single addresses	BWU3671ASi Safety Input Module, IP20, 2SI
2 x 2 channels	floating contacts, optoelectronic protective devices	-	out of AUX	-	unlimited	2 Single addresses	BWU3696ASi Safety Input Module, IP20, 2SI
2 x 2 channels	floating contacts	-	out of AUX	out of AUX	unlimited	2 Single addresses	BWU2707ASi Safety Input Module, IP20, 2SI/4O
1 x 2 channels	floating contacts	-	out of AUX	out of AUX	unlimited	1 Single address	BWU3013ASi Safety Input Module, IP20, 1SI/2O
1 x 2 channels	floating contacts	-	out of ASi	out of AUX	max. 15 m	1 Single address	BWU1939ASi Safety Input Module, IP20, 1SI/2O
1 x 2 channels	floating contacts	-	out of ASi	out of ASi	max. 15 m	1 Single address	BWU2724ASi Safety Input Module, IP20, 1SI/2O
1 x 2 channels	optoelectronic protective devices	-	out of AUX	out of AUX	unlimited	1 Single address	BWU2577ASi Safety Input Module, IP20, 1SI/2O
1 x 2 channels	complementary switch	-	out of ASi	out of ASi	max. 15 m	1 Single address	BWU3882ASi Safety Input Module, IP20, 1SI/2O
1 x 2 channels; SIL 2, Cat. 3	safety mats 1.2 kΩ or 8.2 kΩ monitoring resistor	-	out of AUX	out of AUX	max. 15 m	1 Single address	BWU2661ASi Safety Input Module, IP20, 1SI/2O
1 x 2 channels	4 ... 20 mA / 0 ... 10 V / Pt100	-	out of AUX	-	unlimited	depending on configuration	BWU2692ASi Safety Analog Input Module, IP20, 1SI
1 x 2 channels	thermocouples	-	out of ASi	-	unlimited	depending on configuration	BWU3271ASi Safety Thermocouple Module, IP20, 1SI
-	-	1-8 release circuits, 8 x electronic safe outputs	out of AUX	out of AUX	unlimited	depending on configuration	BWU2836ASi Safety Output Module, IP20, 8SO/8I
-	-	1 release circuit, 2 x electronic safe outputs, max. 3 A, augmented reliability	out of AUX	out of AUX	unlimited	1 Single address + 2 AB addresses	BWU3398ASi Safety Output Module, IP20, 1SO/3I/1EDM
-	-	1 release circuit, 2 x electronic safe outputs	out of AUX	out of AUX	unlimited	1 Single address + 2 AB addresses	BWU2173ASi Safety Output Module, IP20, 1SO/3I/1EDM
-	-	1 release circuit, 2 x electronic safe outputs, max. 3 A, augmented reliability	out of AUX	out of AUX	unlimited	1 Single address + 1 AB address	BWU3869ASi Safety Output Module, IP20, 1SO/1EDM
-	-	1 release circuit, 2 x relay	out of ASi	-	I: max. 15 m; O: unlimited	1 Single address + 1 AB address	BWU2045ASi Safety Output Module, IP20, 1SRO/1EDM
-	-	1 contact expander, 1 x electronic safe output 20 A	-	out of AUX	unlimited	-	BW3016Safe Electronic Output 20 A
-	-	1 contact expander, 1 x electronic safe output 10 A	-	out of AUX	unlimited	-	BW3281Safe Electronic Output 10 A

Safety I/O Modules: Input/output modules, IP67, M12

Safety inputs SIL 3 Cat.4 and standard outputs in one module
Bicolor LEDs per output, state (yellow), overload (red)

Inputs Safety, SIL 3, Cat. 4	Safety signal inputs	Outputs Safety, SIL 3, cat. 4	inputs are supplied by ASi or by AUX (auxiliary 24 V power). If supplied by ASi, inputs shall not be connected to earth or to external potential. Input voltage (sensor supply)	Electronic outputs are supplied by ASi or by AUX (auxiliary 24 V power). If supplied by ASi, outputs shall not be connected to earth or to external potential. For relay outputs the relay contacts are initiated from ASi. The load circuit is powered externally as specified in the data sheet. Output voltage (actuator supply)	Length of connector cable	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 connection	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. ASi address	Special function	Article No.
2 x 2 channels	floating contacts	-	out of ASi	-	max. 15 m	ASi profile cable	2 Single addresses	-	BWU2631ASi Safety Input Module, IP67, M12, 2SI
1 x 2 channels	floating contacts	-	out of ASi	out of AUX	max. 15 m	ASi profile cable	1 Single address	-	BWU2284ASi Safety Input Module, IP67, M12, 1SI/2O
1 x 2 channels	floating contacts	-	out of ASi	out of AUX	max. 15 m	ASi via M12	1 Single address	-	BWU2369ASi Safety Input Module, IP67, M12, 1SI/2O
1 x 2 channels	optoelectronic protective devices	-	out of AUX	out of AUX	unlimited	ASi profile cable	1 Single address	-	BWU2270ASi Safety Input Module, IP67, M12, 1SI/2O
1 x 2 channels	optoelectronic protective devices	-	out of AUX	out of AUX	unlimited	ASi profile cable	1 Single address	Reset output for optoelectronic protective devices	BWU2689ASi Safety Input Module, IP67, M12, 1SI/2O
1 x 2 channels	optoelectronic protective devices	-	out of AUX	out of AUX	unlimited	ASi via M12	1 Single address	-	BWU2370ASi Safety Input Module, IP67, M12, 1SI/2O
1 x 2 channels	optoelectronic protective devices	-	out of ASi	out of ASi	unlimited	ASi via M12	1 Single address	-	BWU2960ASi Safety Input Module, IP67, M12, 1SI/2O
1 x 2 channels	complementary switch	-	out of ASi	out of AUX	max. 15 m	ASi profile cable	1 Single address	-	BWU2814ASi Safety Input Module, IP67, M12, 1SI/2O
6-8 x 2 channels; depending on configuration	floating contacts, optoelectronic protective devices, complementary switch	up to 2 release circuits, up to 2 x electronic safe outputs; depending on configuration	out of ASi	out of ASi	unlimited	ASi profile cable	depending on configuration	-	BW3489ASi Safety I/O Module, IP67, M12, 6-8SI/2SO/16I/16O
6-8 x 2 channels; depending on configuration	floating contacts, optoelectronic protective devices, complementary switch	up to 2 release circuits, up to 2 x electronic safe outputs; depending on configuration	out of ASi	out of ASi	unlimited	ASi via M12	depending on configuration	-	BW3499ASi Safety I/O Module, IP67, M12, 6-8SI/2SO/16I/16O
6-8 x 2 channels; depending on configuration	floating contacts, optoelectronic protective devices, complementary switch	up to 2 release circuits, up to 2 x electronic safe outputs; depending on configuration	out of AUX	out of AUX	unlimited	ASi profile cable	depending on configuration	muting	BW3490ASi Safety I/O Module, IP67, M12, 6-8SI/2SO/16I/16O
2 x 2 channels	floating contacts, optoelectronic protective devices	4 release circuits, 4 x electronic safe outputs	out of AUX	out of AUX	unlimited	ASi profile cable	depending on configuration	-	BWU3064ASi Safety I/O Module, IP67, M12, 2SI/4SO/6I
1 x 2 channels	floating contacts	1 release circuit, 2 x relay	out of AUX	-	unlimited	ASi profile cable	2 Single addresses + 1 AB address	-	BWU4379ASi Safety I/O Module, IP67, M12, 1SI/1SRO/1I

Safety I/O Modules: Active Distributors ASi Safety, IP67

Figure

Inputs Safety, SIL 3, Cat. 4

Safety signal inputs

inputs are supplied by ASi or by AUX (auxiliary 24 V power). If supplied by ASi, inputs shall not be connected to earth or to external potential.

Input voltage (sensor supply)

Electronic outputs are supplied by ASi or by AUX (auxiliary 24 V power). If supplied by ASi, outputs shall not be connected to earth or to external potential.

For relay outputs the relay contacts are initiated from ASi. The load circuit is powered externally as specified in the data sheet.

Output voltage (actuator supply)

PUR line, oil resistant. Further connection options are available on request.

M12 socket	M12 cable socket, angled	M12 cable socket, straight	M8 cable socket, straight	round cable/connecting wires			profile cable branch	push in terminals

2 x round cables/connecting wires 2,5 mm²

Connection

Single wiring: 1 input or output per connection.

Y wiring: 2 inputs or outputs per connection.

Mixed wiring: 1 input and 1 output per connection.

Exact pin assignment see data sheet.

M8/M12 wiring

Under normal conditions (no bus termination or repeater), the permissible total length of the ASi segment is max. 100 m. The calculation should take into consideration that the length of the connection cable (round cable) for each connected passive distributor must be doubled.

In the case of the active distributors (ASi modules) however only the one ASi profile cable is counted.

Round cable

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.

Flat design, installation in cable duct possible

status of in- and outputs is indicated by LEDs. In addition to that, both ASi LEDs (PWR green and FAULT red) show - as usual regarding the ASi modules - the status of the ASi modules. Uaux is indicated by a green LED.

LED status display

Profile cable connection

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.

ASi address

Special function

Article No.

1 x 2 channels

floating contacts

out of ASi

1 x round cable/connecting wires + 1 x ASi addressing cable socket

-

2 m

yes, depth: 35 mm

yes

1 x ASi

1 Single address

to connect 2 x NC contacts to ASi

BWU3604

1 x 2 channels

floating contacts

out of ASi

out of AUX

1 x round cable/connecting wires

-

1 m

yes, depth: 35 mm

yes

1 x ASi, 1 x AUX 24 V

1 Single address

to connect 2 x NC contacts to ASi

BWU3425

1 x 2 channels

floating contacts

out of ASi

out of AUX

1 x M12 cable socket, straight, 8 poles

-

1 m

yes, depth: 35 mm

yes

1 x ASi, 1 x AUX 24 V

1 Single address

-

BWU3750

1 x 2 channels

optoelectronic protective devices

out of AUX

1 x M12 cable socket, straight 8 poles + 1 x M12 cable socket, straight, 5 poles

-

10 m

yes, depth: 19 mm

yes

1 x ASi, 1 x AUX 24 V

1 Single address

to connect Leuze MLC530SPG (operation mode 4) to ASi

BWU4956

1 x 2 channels

optoelectronic protective devices

out of AUX

1 x M12 cable socket, straight 8 poles + 1 x M12 cable socket, straight, 5 poles

-

10 m

yes, depth: 19 mm

yes

1 x ASi, 1 x AUX 24 V

1 Single address

to connect Leuze MLC530SPG (operation mode 5) to ASi

BWU3718

1 x 2 channels

optoelectronic protective devices

out of AUX

1 x M12 cable socket, straight 8 poles + 1 x M12 cable socket, straight, 5 poles

-

SI/O: 0,5 m, 24V: 2 m

yes, depth: 19 mm

yes

1 x ASi, 1 x AUX 24 V

1 Single address

To connect Sick deTec4 to ASi

BWU3725

1 x 2 channels

floating contacts

out of ASi

2 x round cables/connecting wires

-

1 m

yes, depth: 19 mm

yes

1 x ASi

1 Single address

to connect 2 x NC contacts to ASi

BWU3249

1 x 2 channels

floating contacts

out of ASi

-

2 x round cables/connecting wires

-

10 m

yes, depth: 19 mm

yes

1 x ASi

1 Single address

to connect 2 x NC contacts to ASi

BWU3600

1 x 2 channels

optoelectronic protective devices

out of AUX

1 x M12 cable socket, straight, 8 poles

-

2 m

yes, depth: 19 mm

yes

1 x ASi, 1 x AUX 24 V

1 Single address

to connect Leuze MLD530-RT3M (operation mode 5) to ASi

BWU3719

1 x 2 channels

optoelectronic protective devices

out of AUX

1 x round cable/connecting wires

-

2 m

yes, depth: 19 mm

yes

1 x ASi, 1 x AUX 24 V

1 Single address

to connect Leuze MLD530-RT3M to ASi

BWU4166

1 x 2 channels

floating contacts

out of ASi

1 x round cable/connecting wires

-

10 m

yes, depth: 19 mm

yes

1 x ASi

1 Single address

to connect 2 x NC contacts to ASi

BWU3599

1 x 2 channels

floating contacts

out of ASi

1 x round cable/connecting wires

-

1 m

yes, depth: 19 mm

yes

1 x ASi

1 Single address

to connect 2 x NC contacts to ASi

BWU3248

1 x 2 channels

floating contacts

out of ASi

-

1 x round cable/connecting wires

-

0,30 m

yes, depth: 19 mm

yes

1 x ASi

1 Single address

to connect 2 x NC contacts to ASi

BWU3373

1 x 2 channels

floating contacts

out of ASi

-

1 x M8 cable socket, straight, 4 poles

-

0,20 m

yes, depth: 19 mm

yes

1 x ASi

1 Single address

to connect Sick RE13-SA84 / RE13-SAC / RE23-SAC / RE23-SA84 to ASi

BWU3553

1 x 2 channels

floating contacts

out of ASi

-

1 x M12 cable socket, angled, 5 poles

-

1 m

yes, depth: 19 mm

yes

1 x ASi

1 Single address

to connect E-STOP buttons to ASi via M12

BWU3413

1 x 2 channels

floating contacts

out of ASi

-

1 x M12 cable socket, straight, 5 poles

-

1 m

yes, depth: 19 mm

yes

1 x ASi

1 Single address

to connect E-STOP buttons to ASi via M12

BWU3626

1 x 2 channels

floating contacts

out of ASi

1 x M12 cable socket, angled, 8 poles

-

1 m

yes, depth: 19 mm

yes

1 x ASi

1 Single address

-

BWU3796

1 x 2 channels

floating contacts

out of ASi

1 x M12 cable socket, straight, 8 poles

-

1 m

yes, depth: 19 mm

yes

1 x ASi

1 Single address

-

BWU4702

1 x 2 channels

floating contacts

out of ASi

-

1 x M12 cable socket, straight, 5 poles

-

2 m

yes, depth: 19 mm

yes

1 x ASi

1 Single address

to connect E-STOP buttons to ASi via M12

BWU4701

1 x 2 channels

optoelectronic protective devices

out of AUX

1 x M12 cable socket, angled, 5 poles

-

1 m

yes, depth: 19 mm

yes

1 x ASi, 1 x AUX 24 V

1 Single address

-

BW3299

1 x 2 channels

optoelectronic protective devices

out of AUX

1 x M12 cable socket, straight, 5 poles

-

5 m

yes, depth: 19 mm

yes

1 x ASi, 1 x AUX 24 V

1 Single address

-

BWU3627

1 x 2 channels

optoelectronic protective devices

out of AUX

1 x M12 cable socket, straight, 5 poles

-

1 m

yes, depth: 19 mm

yes

1 x ASi, 1 x AUX 24 V

1 Single address

to connect Euchner MGB / Pizzato ST GD210MP-G1T to ASi

BWU3376

1 x 2 channels

optoelectronic protective devices

out of AUX

1 x M12 cable socket, straight, 8 poles

-

5 m

yes, depth: 19 mm

yes

1 x ASi, 1 x AUX 24 V

1 Single address

to connect Pilz PSENslock, PSENcode to ASi

BWU3721

1 x 2 channels

optoelectronic protective devices

out of AUX

1 x M12 cable socket, straight, 8 poles

-

1 m

yes, depth: 19 mm

yes

1 x ASi, 1 x AUX 24 V

1 Single address

to connect Pilz PSENslock, PSENcode to ASi

BWU3488

1 x 2 channels

optoelectronic protective devices

out of AUX

1 x M12 cable socket, straight, 8 poles

-

1 m

yes, depth: 19 mm

yes

1 x ASi, 1 x AUX 24 V

1 Single address

to connect Schmersal AZM400 to ASi

BWU3565

1 x 2 channels

optoelectronic protective devices

out of AUX

1 x M12 cable socket, straight, 8 poles

-

1 m

yes, depth: 19 mm

yes

1 x ASi, 1 x AUX 24 V

1 Single address

to connect Schmersal AZM200 / AZM201 / AZM300 / MZM100 to ASi

BWU3635

Safety I/O Modules: Circuit Board Modules ASi, PCB Solutions

Special versions on request

Figure

Inputs Safety, SIL 3, Cat. 4

Safety signal inputs

inputs are supplied by ASi or by AUX (auxiliary 24 V power). If supplied by ASi, inputs shall not be connected to earth or to external potential.

Input voltage (sensor supply)

Electronic outputs are supplied by ASi or by AUX (auxiliary 24 V power). If supplied by ASi, outputs shall not be connected to earth or to external potential.

For relay outputs the relay contacts are initiated from ASi. The load circuit is powered externally as specified in the data sheet.

Output voltage (actuator supply)

Length of connector cable

Coating protects components and circuit boards when touched.

thin coated	thick coated

Coating

further connection options are available on request.

screw terminals	wiring pins, angled (pins 180° to PCB)	wiring pins, straight (pins 90° to PCB)	solder lugs	sockets	plug-in spring-type / screw terminals	connecting wires

PCB connection

status of in- and outputs is indicated by LEDs. In addition to that, both ASi LEDs (PWR green and FAULT red) show - as usual regarding the ASi modules - the status of the ASi modules. Uaux is indicated by a green LED.

LED status display

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 connection

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.

ASi address

Special function

Article No.

1 x 2 channels

floating contacts

out of ASi

max. 15 m

thick coated

connecting wires, 200 mm

yes

connecting wires, 200 mm

1 Single address

for mounting in E-STOP housing

BWR3067

1 x 2 channels

floating contacts

out of ASi

max. 15 m

thick coated

connecting wires, 100 mm

yes

connecting wires, 100 mm

1 Single address

for mounting in E-STOP housing

BWR2426

1 x 2 channels

floating contacts

out of ASi

max. 15 m

thick coated

connecting wires, 100 mm + contact pins

yes

connecting wires, 100 mm

1 Single address

for mounting in E-STOP housing

BWR2521

1 x 2 channels

floating contacts

out of ASi

out of AUX

max. 15 m

no

plug-in screw terminals

yes

plug-in connecting wires

1 Single address

-

BWR1896

1 x 2 channels

floating contacts

out of ASi

out of AUX

max. 15 m

no

screw terminals

yes

screw terminals

1 Single address

-

BWR1751

-

out of AUX

max. 3 m

thick coated

screw terminals

yes

screw terminals

1 Single address + 2 AB addresses

-

BW2914

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Safety I/O Modules: Input/output modules, IP20

Safety I/O Modules: Input/output modules, IP67, M12

Safety I/O Modules: Active Distributors ASi Safety, IP67

Safety I/O Modules: Circuit Board Modules ASi, PCB Solutions