安全监视器可以安全传输和处理来自安全输入模块的安全相关数据，并在发生潜在危险运动时通过 ASi 远程安全关闭安全输出模块。并且始终符合 PLe 标准。

Bihl+Wiedemann 提供用于 ASi 工作安全的安全监视器，作为独立设备，用于使用安全模块扩展现有 ASi 电路。对于新系统，我们可以提供 ASi-3 或 ASi-3。ASi-5/ASi-3 网关配备集成安全监视器和最常用自动化系统接口，采用最有效的方法同时安全构建 1 或 2 个 ASi 电路。即使是具有多达 1922 个安全 I/O 的大型应用程序，也可以使用我们的“以太网安全链接”技术通过以太网/Profinet 安全连接多个网关来使用这些设备来实现。

对于具有三个或更多安全信号的小型应用，您应该考虑我们的安全基本监视器，这是一种不带网关但具有可配置状态输出的紧凑型安全控制器。该模块可实现通用扩展，也非常适合作为特殊安全应用的头站。

Figure	Fieldbus interface	Safety communication	Model	Inputs Safety, SIL 3, Cat. 4	Outputs Safety, SIL 3, cat. 4	Number of ASi networks, number of ASi Master	Integrated decoupling, ASi current measurement in the gateway	Article No.
BWU3953	PROFINET, OPC UA	PROFIsafe (F-CPU) + Safe Link	Gateway with integrated ASi-5/ASi-3 Safety Monitor	3 x 2 channels	6 release circuits, 6 x electronic safe outputs	2 ASi networks, 2 ASi-5/ASi-3 Masters	yes, max. 4 A/ASi network	BWU3953
BWU3674	PROFINET, OPC UA	PROFIsafe (F-CPU) + Safe Link	Gateway with integrated Safety Monitor	3 x 2 channels	6 release circuits, 6 x electronic safe outputs	2 ASi networks, 2 ASi-5/ASi-3 Masters	yes, max. 4 A/ASi network	BWU3674
BWU3952	PROFINET, OPC UA	Safe Link	Gateway with integrated ASi-5/ASi-3 Safety Monitor	3 x 2 channels	6 release circuits, 6 x electronic safe outputs	2 ASi networks, 2 ASi-5/ASi-3 Masters	yes, max. 4 A/ASi network	BWU3952
BWU4000	PROFINET, OPC UA	Safe Link	Gateway with integrated Safety Monitor	3 x 2 channels	6 release circuits, 6 x electronic safe outputs	2 ASi networks, 2 ASi-5/ASi-3 Masters	yes, max. 4 A/ASi network	BWU4000
BWU3973	PROFINET, OPC UA	PROFIsafe (F-CPU) + Safe Link	Gateway with integrated ASi-5/ASi-3 Safety Monitor	no local safe input	no local safe output	2 ASi networks, 2 ASi-5/ASi-3 Masters	yes, max. 4 A/ASi network	BWU3973
BWU3833	PROFINET, OPC UA	PROFIsafe (F-CPU) + Safe Link	Gateway with integrated Safety Monitor	no local safe input	no local safe output	2 ASi networks, 2 ASi-5/ASi-3 Masters	yes, max. 4 A/ASi network	BWU3833
BWU3954	PROFINET, OPC UA	PROFIsafe (F-CPU) + Safe Link	Gateway with integrated ASi-5/ASi-3 Safety Monitor	3 x 2 channels	6 release circuits, 6 x electronic safe outputs	1 ASi network, 1 ASi-5/ASi-3 Master	yes, max. 4 A/ASi network	BWU3954
BWU3862	PROFINET, OPC UA	PROFIsafe (F-CPU) + Safe Link	Gateway with integrated Safety Monitor	3 x 2 channels	6 release circuits, 6 x electronic safe outputs	1 ASi network, 1 ASi-5/ASi-3 Master	yes, max. 4 A/ASi network	BWU3862
BWU3955	PROFINET, OPC UA	Safe Link	Gateway with integrated ASi-5/ASi-3 Safety Monitor	3 x 2 channels	6 release circuits, 6 x electronic safe outputs	1 ASi network, 1 ASi-5/ASi-3 Master	yes, max. 4 A/ASi network	BWU3955
BWU3863	PROFINET, OPC UA	Safe Link	Gateway with integrated Safety Monitor	3 x 2 channels	6 release circuits, 6 x electronic safe outputs	1 ASi network, 1 ASi-5/ASi-3 Master	yes, max. 4 A/ASi network	BWU3863
BWU3974	PROFINET, OPC UA	PROFIsafe (F-CPU) + Safe Link	Gateway with integrated ASi-5/ASi-3 Safety Monitor	no local safe input	no local safe output	1 ASi network, 1 ASi-5/ASi-3 Master	yes, max. 4 A/ASi network	BWU3974
BWU4018	PROFINET, OPC UA	PROFIsafe (F-CPU) + Safe Link	Gateway with integrated Safety Monitor	no local safe input	no local safe output	1 ASi network, 1 ASi-5/ASi-3 Master	yes, max. 4 A/ASi network	BWU4018
BWU3998	PROFINET, OPC UA	Safe Link	Gateway with integrated Safety Monitor	no local safe input	no local safe output	1 ASi network, 1 ASi-5/ASi-3 Master	yes, max. 4 A/ASi network	BWU3998
BWU3367	PROFINET	PROFIsafe (F-CPU) + Safe Link	Gateway with integrated Safety Monitor	3 x 2 channels	6 release circuits, 6 x electronic safe outputs	2 ASi networks, 2 ASi-3 Masters	yes, max. 4 A/ASi network	BWU3367
BWU2828	PROFINET	Safe Link	Gateway with integrated Safety Monitor	3 x 2 channels	6 release circuits, 6 x electronic safe outputs	2 ASi networks, 2 ASi-3 Masters	yes, max. 4 A/ASi network	BWU2828
BWU2798	PROFINET	Safe Link	Gateway with integrated Safety Monitor	3 x 2 channels	6 release circuits, 6 x electronic safe outputs	1 ASi network, 1 ASi-3 Master	yes, max. 4 A/ASi network	BWU2798
BWU2794	PROFINET	PROFIsafe (F-CPU)	Gateway with integrated Safety Monitor	3 x 2 channels	6 release circuits, 6 x electronic safe outputs	1 ASi network, 1 ASi-3 Master	yes, max. 4 A/ASi network	BWU2794
BWU3857	EtherNet/IP + ModbusTCP, OPC UA	CIP Safety over EtherNet/IP + Safe Link	Gateway with integrated Safety Monitor	3 x 2 channels	6 release circuits, 6 x electronic safe outputs	2 ASi networks, 2 ASi-5/ASi-3 Masters	yes, max. 4 A/ASi network	BWU3857
BWU3958	EtherNet/IP + ModbusTCP, OPC UA	Safe Link	Gateway with integrated ASi-5/ASi-3 Safety Monitor	3 x 2 channels	6 release circuits, 6 x electronic safe outputs	2 ASi networks, 2 ASi-5/ASi-3 Masters	yes, max. 4 A/ASi network	BWU3958
BWU3825	EtherNet/IP + ModbusTCP, OPC UA	Safe Link	Gateway with integrated Safety Monitor	3 x 2 channels	6 release circuits, 6 x electronic safe outputs	2 ASi networks, 2 ASi-5/ASi-3 Masters	yes, max. 4 A/ASi network	BWU3825
BWU3957	EtherNet/IP + ModbusTCP, OPC UA	Safe Link	Gateway with integrated ASi-5/ASi-3 Safety Monitor	3 x 2 channels	6 release circuits, 6 x electronic safe outputs	1 ASi network, 1 ASi-5/ASi-3 Master	yes, max. 4 A/ASi network	BWU3957
BWU3866	EtherNet/IP + ModbusTCP, OPC UA	Safe Link	Gateway with integrated Safety Monitor	3 x 2 channels	6 release circuits, 6 x electronic safe outputs	1 ASi network, 1 ASi-5/ASi-3 Master	yes, max. 4 A/ASi network	BWU3866
BWU3683	EtherNet/IP + ModbusTCP, OPC UA	CIP Safety over EtherNet/IP + Safe Link	Gateway with integrated Safety Monitor	3 x 2 channels	6 release circuits, 6 x electronic safe outputs	2 ASi networks, 2 ASi-3 Masters	yes, max. 4 A/ASi network	BWU3683
BWU3543	EtherNet/IP + ModbusTCP	Safe Link	Gateway with integrated Safety Monitor	3 x 2 channels	6 release circuits, 6 x electronic safe outputs	2 ASi networks, 2 ASi-3 Masters	yes, max. 4 A/ASi network	BWU3543
BWU3544	EtherNet/IP + ModbusTCP	Safe Link	Gateway with integrated Safety Monitor	3 x 2 channels	6 release circuits, 6 x electronic safe outputs	2 ASi networks, 2 ASi-3 Masters	no, max. 8 A/ASi network, redundant supply	BWU3544
BWU3542	EtherNet/IP + ModbusTCP	Safe Link	Gateway with integrated Safety Monitor	3 x 2 channels	6 release circuits, 6 x electronic safe outputs	1 ASi network, 1 ASi-3 Master	yes, max. 4 A/ASi network	BWU3542
BWU3858	EtherCAT, OPC UA	FSoE + Safe Link	Gateway with integrated Safety Monitor	3 x 2 channels	6 release circuits, 6 x electronic safe outputs	2 ASi networks, 2 ASi-5/ASi-3 Masters	yes, max. 4 A/ASi network	BWU3858
BWU3583	EtherCAT, OPC UA	FSoE + Safe Link	Gateway with integrated Safety Monitor	3 x 2 channels	6 release circuits, 6 x electronic safe outputs	1 ASi network, 1 ASi-5/ASi-3 Master	yes, max. 4 A/ASi network	BWU3583
BWU3991	EtherCAT, OPC UA	Safe Link	Gateway with integrated Safety Monitor	3 x 2 channels	6 release circuits, 6 x electronic safe outputs	1 ASi network, 1 ASi-5/ASi-3 Master	yes, max. 4 A/ASi network	BWU3991
BWU2944	EtherCAT	Safe Link	Gateway with integrated Safety Monitor	3 x 2 channels	6 release circuits, 6 x electronic safe outputs	2 ASi networks, 2 ASi-3 Masters	yes, max. 4 A/ASi network	BWU2944
BWU2797	EtherCAT	Safe Link	Gateway with integrated Safety Monitor	3 x 2 channels	6 release circuits, 6 x electronic safe outputs	1 ASi network, 1 ASi-3 Master	yes, max. 4 A/ASi network	BWU2797
BWU4780	BACnet/IP, OPC UA	Safe Link	Gateway with integrated Safety Monitor	3 x 2 channels	6 release circuits, 6 x electronic safe outputs	2 ASi networks, 2 ASi-3 Masters	yes, max. 8 A/ASi network	BWU4780
BWU4001	BACnet/IP, OPC UA	Safe Link	Gateway with integrated Safety Monitor	3 x 2 channels	6 release circuits, 6 x electronic safe outputs	2 ASi networks, 2 ASi-3 Masters	no, max. 8 A/ASi network, redundant supply	BWU4001
BWU3865	POWERLINK, OPC UA	openSAFETY over POWERLINK + Safe Link	Gateway with integrated Safety Monitor	3 x 2 channels	6 release circuits, 6 x electronic safe outputs	2 ASi networks, 2 ASi-5/ASi-3 Masters	yes, max. 4 A/ASi network	BWU3865
BWU3828	POWERLINK, OPC UA	Safe Link	Gateway with integrated Safety Monitor	3 x 2 channels	6 release circuits, 6 x electronic safe outputs	2 ASi networks, 2 ASi-5/ASi-3 Masters	yes, max. 4 A/ASi network	BWU3828
BWU3176	POWERLINK	Safe Link	Gateway with integrated Safety Monitor	3 x 2 channels	6 release circuits, 6 x electronic safe outputs	2 ASi networks, 2 ASi-3 Masters	yes, max. 4 A/ASi network	BWU3176
BWU3177	POWERLINK	Safe Link	Gateway with integrated Safety Monitor	3 x 2 channels	6 release circuits, 6 x electronic safe outputs	1 ASi network, 1 ASi-3 Master	yes, max. 4 A/ASi network	BWU3177
BWU3861	Sercos, OPC UA	safe Schneider drives over Sercos + Safe Link	Gateway with integrated Safety Monitor	3 x 2 channels	6 release circuits, 6 x electronic safe outputs	2 ASi networks, 2 ASi-5/ASi-3 Masters	yes, max. 4 A/ASi network	BWU3861
BWU3860	Sercos, OPC UA	CIP Safety over Sercos + Safe Link	Gateway with integrated Safety Monitor	3 x 2 channels	6 release circuits, 6 x electronic safe outputs	2 ASi networks, 2 ASi-5/ASi-3 Masters	yes, max. 4 A/ASi network	BWU3860
BWU3845	Sercos, OPC UA	CIP Safety over Sercos + Safe Link	Gateway with integrated Safety Monitor	no local safe input	no local safe output	2 ASi networks, 2 ASi-5/ASi-3 Masters	yes, max. 4 A/ASi network	BWU3845
BWU2822	PROFIBUS	Safe Link	Gateway with integrated Safety Monitor	3 x 2 channels	6 release circuits, 6 x electronic safe outputs	2 ASi networks, 2 ASi-3 Masters	yes, max. 4 A/ASi network	BWU2822
BWU2793	PROFIBUS	Safe Link	Gateway with integrated Safety Monitor	3 x 2 channels	6 release circuits, 6 x electronic safe outputs	1 ASi network, 1 ASi-3 Master	yes, max. 4 A/ASi network	BWU2793
BWU2819	PROFIBUS	PROFIsafe (F-CPU)	Gateway with integrated Safety Monitor	3 x 2 channels	6 release circuits, 6 x electronic safe outputs	1 ASi network, 1 ASi-3 Master	yes, max. 4 A/ASi network	BWU2819
BWU2804	CANopen	Safe Link	Gateway with integrated Safety Monitor	3 x 2 channels	6 release circuits, 6 x electronic safe outputs	1 ASi network, 1 ASi-3 Master	yes, max. 4 A/ASi network	BWU2804
BWU2833	CC-Link	Safe Link	Gateway with integrated Safety Monitor	3 x 2 channels	6 release circuits, 6 x electronic safe outputs	1 ASi network, 1 ASi-3 Master	yes, max. 4 A/ASi network	BWU2833
BWU2972	DeviceNet	Safe Link	Gateway with integrated Safety Monitor	3 x 2 channels	6 release circuits, 6 x electronic safe outputs	1 ASi network, 1 ASi-3 Master	yes, max. 4 A/ASi network	BWU2972
BWU2852	ASi monitors	Safe Link	Safety Basic Monitor with extended features	3 x 2 channels, input 3 optional for speed monitor (up to 4 kHz)	2 release circuits, 2 x electronic safe outputs	1 ASi network, 1 ASi-3 Master	yes, max. 0,5 A/ASi network, max. 8 A with ASi power supply	BWU2852
BWU2700	ASi monitors	-	Safety Basic Monitor with extended features	4 x 2 channels, inputs 3+4 optional for speed monitor (up to 4 kHz)	2 release circuits, 2 x electronic safe outputs	1 ASi network, 1 ASi-3 Master	yes, max. 0,5 A/ASi network, max. 8 A with ASi power supply	BWU2700
BWU2567	ASi monitors	-	Safety Basic Monitor with extended features	4 x 2 channels, inputs 3+4, compatible as replacement with consortial monitor	2 release circuits, 2 x electronic safe outputs	1 ASi network, no ASi Master, ASi Monitor	no, max. 8 A/ASi network	BWU2567
BW2512	ASi monitors	-	Safety Basic Monitor with extended features	4 x 2 channels, inputs 3+4 optional for speed monitor (up to 4 kHz)	2 release circuits, 2 x electronic safe outputs	1 ASi network, 1 ASi-3 Master	yes, max. 0,5 A/ASi network, max. 8 A with ASi power supply	BW2512