Emerson A6740 16-Channel Output Relay Module

Emerson A6740 Key parameters

Modular Design & Compatibility

The A6740 is a 3U-sized, hot-swappable module designed for integration with the AMS 6500 machinery protection system. It occupies 2 slots in a rack, reducing cabinet space by 50% compared to traditional 6U modules. Compatible with IMR6000 series racks (12TE width), it supports redundant configurations for fail-safe operation .

Input/Output Configuration

Inputs: 60 configurable inputs, including channel clear, alert, and danger signals from paired sensor channels (e.g., slots 1 and 2).

Outputs: 16 SPDT (Single Pole Double Throw) relays with selectable normally open/closed and energized/non-energized states. Relays operate at 13–32 VDC control voltage and handle up to 48V/1A contact loads .

Time Delay: Adjustable delays (0–30 seconds) for relay activation to prevent false triggers during transient conditions .

Logic & Programmability

The module supports 30 user-defined logic expressions (AND, OR, 2-out-of-3 voting) for custom alarm routing. Boolean logic and time-delay settings are configured via intuitive graphical software, enabling precise alignment with machinery protection protocols .

Environmental Resilience

Operating Temperature: 0°C to 65°C (32°F to 149°F).

Storage/Transport: Withstands -40°C to 70°C (-40°F to 158°F).

Vibration/Shock: Compliant with IEC 68-2 standards—0.15 mm displacement (10–55 Hz) and 98 m/s² shock resistance (16 ms duration) .

Humidity Tolerance: 5–95% non-condensing .

Compliance & Safety

Meets API 670 requirements for machinery protection systems.

EMC Resistance: Conforms to EN50081-1/EN50082-2 for electromagnetic compatibility.

Power Consumption: ≤6 W, with password-protected configuration to prevent unauthorized access .