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Siemens 3RK1105-1BG04-2CA0 ASIsafe Extended Safety Monitor

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ManufacturerSiemens

Part number3RK1105-1BG04-2CA0

Safety Outputs 2 F-RO

Enabling Circuits 2

Protection IP20

Terminals Spring-type, removable

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Veteran-owned

CAGE: 9NK75

Extended safety monitoring functions Two fail-safe relay outputs Two enabling circuits for safety functions Spring-type terminals for easy wiring High safety integrity levels supported Fast response time

Product description

The Siemens 3RK1105-1BG04-2CA0 is an ASIsafe extended safety monitor designed for machine safety applications. It features 2 fail-safe relay outputs (F-RO) and 2 enabling circuits, with IP20 protection and convenient spring-type, removable terminals. The safety monitor offers a maximum response time of 40 ms and supports safety levels up to Category 4 according to EN954-1, PL e according to EN ISO 13849-1, and SIL 3 according to IEC 61508.

This safety monitor is crucial for ensuring personnel safety in industrial environments by monitoring emergency stops, light curtains, safety gates, and other safety-related functions. It is widely used in manufacturing, automotive, packaging, and food & beverage industries where compliance with strict safety standards is mandatory.

Stanlo Automation, a veteran-owned surplus parts distributor, provides the Siemens 3RK1105-1BG04-2CA0. We are your trusted source for reliable safety components, ensuring your machines meet safety regulations and protect your workforce.

Technical specifications

Safety Outputs	2 F-RO
Enabling Circuits	2
Protection	IP20
Terminals	Spring-type, removable
Max Response Time	40 ms
Safety Standards	Cat 4 (EN954-1), PL e (EN ISO 13849-1), SIL 3 (IEC 61508)

Common applications

Emergency stop circuits

Safety gate monitoring

Light curtain integration

Two-hand controls

Machine guarding

Industrial safety systems

Compatible systems

Siemens S7-1200, S7-1500, LOGO! and other controllers with safety I/O integration; compatible with various safety sensors and devices.

Also known as

Siemens ASIsafe Safety Monitoring Relay

Replaces / compatible with

This safety monitor is part of the Siemens ASIsafe series and is designed to fulfill advanced safety monitoring requirements in industrial applications. It replaces simpler safety relays where higher safety integrity levels are needed.

Technical note

Expert tip

Ensure that the enabling circuits are properly wired and monitored according to the safety concept to achieve the rated safety level (PL e / SIL 3).

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Frequently asked questions

What is the maximum response time for the Siemens 3RK1105-1BG04-2CA0 ASIsafe safety monitor?

The Siemens 3RK1105-1BG04-2CA0 ASIsafe extended safety monitor has a maximum response time of 40 milliseconds. This quick reaction time is critical for rapidly halting machinery in emergency situations to ensure operator safety.