Emerson EPRO A6740-10 | Industrial Relay Module for 6300 SIS

Emerson EPRO A6740-10 Relay Output Module – Product Description

Product Summary

The Emerson EPRO A6740-10 delivers secure relay output control for high-integrity overspeed and process shutdown systems. Its rugged construction supports stable operation in power plants, refineries, and automated production environments. Moreover, the module integrates directly with AMS 6300 SIS hardware, enabling fast and reliable trip responses when dangerous operating conditions arise. Each relay channel is engineered for consistent performance, and therefore operators gain dependable shutdown control in critical machinery protection applications.

Technical Specifications

General Information

• Brand: Emerson EPRO

• Model: A6740-10

• Product Type: Relay Output Module

• System: AMS 6300 SIS Overspeed Protection

Relay Specifications

• Relay Type: Electromechanical, safety-rated

• Number of Channels: 16 isolated relays (industrial version)

• Contact Form: SPDT (Form C)

• Contact Ratings:

• 5 A @ 250 VAC

• 2 A @ 30 VDC

• Trip Logic: Voted or non-voted configuration

• Response Time: <10 ms

Electrical & Signal

• Power Supply: 24 VDC 

• Isolation: High isolation between logic and contacts

Environmental Ratings

• Operating Temperature: 0 °C to 65 °C

• Storage Temperature: –40 °C to +70 °C

• Vibration: 0.15 mm (10–55 Hz) / 19.6 mm/s² (55–150 Hz)

• Shock Resistance: 98 m/s² (16 ms)

• Humidity: 95% non-condensing

Physical Details

• Dimensions: 54.46 × 128.4 × 160 mm (DIN Eurocard)

• Weight: 320 g (net), 450 g (gross)

• Mounting: 35 mm DIN rail

• Space Requirement: 3 HE vertical panel space

Certifications

• IEC 68-2 compliant

• CE certified

• SIL3 design principles

FAQ

What systems support the A6740-10 relay module?
It integrates with the Emerson AMS 6300 SIS Overspeed Protection System and MX-series control architectures.

How fast does the relay respond during trip events?
The relay activates in less than 10 milliseconds during a safety shutdown.

Is the module suitable for harsh industrial environments?
Yes, it withstands vibration, shock, and high humidity levels.

Does the module support redundant trip logic?
Yes, it supports voted and non-voted trip strategies to meet SIL3 requirements.

What comes in the package?
The module includes mounting brackets, a user manual, and certification documents.