MAYSER SG-EFS 104 ZK2/1 (1000841) – Safety Control Unit

MAYSER SG-EFS 104 ZK2/1 (1000841) – Safety Control Unit / Switching Amplifier

The MAYSER SG-EFS 104 ZK2/1 is a dual-channel, electromechanical Safety Control Unit (often called a **Switching Amplifier** or **Safety Relay**) specifically designed to monitor pressure-sensitive protective devices like safety edges, mats, and bumpers. This redundant control unit operates on 24 V AC/DC and achieves a high safety level (Category 3 / PL e), ensuring that the output relays safely stop hazardous machine movement upon sensor actuation or detection of a system fault (e.g., cable break).

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Quick Navigation

• About This Safety Control Unit
• Applications
• Why ROMA Industrial Company
• Technical Specifications
• Key Features & Benefits

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About This Safety Control Unit

This product is a dedicated safety evaluation device from MAYSER. The SG-EFS 104 ZK2/1 utilizes a **monitoring resistor** (1.2 kΩ for the original variant) principle to constantly check the integrity of the connected safety sensor’s circuit. The single-fault-safe electronics module features two redundant channels, each controlling a force-guided relay. If the sensor is activated or the sensor cable breaks, both relays de-energize within a **10 ms reaction time**, opening the safety contacts and initiating the machine stop. It is designed for DIN rail mounting and must be housed in an enclosure with a minimum IP54 rating.

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Applications

This switching amplifier is essential for safety monitoring in industrial automation, specifically for:

• Monitoring of MAYSER Safety Edges and Bumpers on industrial gates, doors, and movable parts.
• Monitoring of Pressure-Sensitive Safety Mats on hazardous area floors.
• Emergency Stop (E-STOP) Circuits with specific resistor-monitored sensors.
• Any application requiring Category 3 / PL e safety monitoring for access control.

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Why ROMA Industrial Company

ROMA Industrial is your trusted partner for a full range of industrial supplies across categories like Motion Control & Mechatronics, Electrical & Automation, and Fluid Power & Control. We are committed to providing top-tier products and service to keep your operations running smoothly. We partner with world-class shipping providers like FedEx, DHL, and UPS to ensure fast and reliable delivery worldwide. We accept returns to fulfill your satisfaction and accept variable payments methods including PayPal, credit cards, and more. We are a supplier in Europe, USA, and Saudi Arabia.

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Technical Specifications

• Manufacturer: MAYSER
• Part Number: 1000841
• Model (Typ): SG-EFS 104 ZK2/1
• Product Type: Safety Control Unit / Switching Amplifier
• Supply Voltage: 24 V AC/DC
• Power Consumption: 6 VA / 4 W (Typically)
• Output Channels: 2 (Dual-channel switching, force-guided relays)
• Switching Capacity (Safety Contacts): Max 250 V AC, 24 V DC, 2 A
• Switching Current (Max.): 4 A (Safety Contacts) / 100 mA (Signal Circuit)
• Response Time (Ansprechzeit): < 10 ms
• Monitoring Type: 1.2 kΩ monitoring resistor
• Safety Classification: Category 3 (EN 954-1) / Suitable for PL e (ISO 13849-1)
• Protection Rating: IP20 (Requires external IP54 enclosure)
• Mounting: 35 mm DIN Rail
• Weight: 0.18 kg (Typically)

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Key Features & Benefits

• Pressure Sensor Compatibility: Dedicated evaluation unit for MAYSER safety mats, edges, and bumpers.
• Fast Response Time: Reaction time of less than 10 ms ensures rapid machine stoppage upon hazard detection.
• High Safety Level: Dual-channel, redundant design is suitable for the highest safety applications (Category 3 / PL e).
• Circuit Integrity Monitoring: Constantly monitors the sensor’s monitoring resistor to detect faults like cable breaks.