Emerson A6500-RC | AMS 6500 ATG System Relay Card, 16 SPDT Relay Output Module In Stock

Description

At-A-Glance Executive Brief

• Model: A6500-RC
• Brand: Emerson / EPRO
• Part Type: System Relay Card for AMS 6500 ATG machinery protection system
• Lifecycle status: Critical rotating machinery protection spare; stocked for brownfield AMS6500 ATG retrofits and routine plant maintenance
• System compatibility: A6500-SR single rack, A6500-RR redundant rack, A6500-UM universal measurement cards; executes configurable voting logic and provides hard relay contacts to DCS / ESD trip interlocks
• Weight: ~0.48 kg

Technical Introduction

Failure of A6500-RC will interrupt relay voting and hardwired alarm/trip outputs of the machinery protection system. It cannot process vibration, axial position and temperature alert/danger signals to trigger field relays, annunciators or ESD interlocks. Machinery protection becomes unavailable, triggering system critical faults and exposing steam turbines, compressors and other rotating assets to risk of unprotected over-speed or vibration damage.

Emerson A6500-RC is a hot-swappable plug-in relay logic board for the AMS 6500 ATG API 670 machinery protection platform. It receives up to 66 galvanically isolated 24V digital status inputs from A6500-UM measurement cards and external binary signals. The onboard processor supports custom Boolean logic, latching functions, timers and M-of-N voting across 16 independent logic networks, driving 16 SPDT relay outputs. Relay contacts directly interface with field trip solenoids, local alarm annunciators and hardwired DCS/ESD interlocks. Front panel LEDs display module health and individual relay state. Configuration and commissioning are performed with AMS Machine Studio software. This module meets API 670 requirements and supports SIL 2 capability, designed for high integrity protection of steam turbines, gas compressors, hydro turbines and other critical rotating equipment. Oil & gas, power and petrochemical reliability teams stock A6500-RC to rapidly restore machinery protection during planned outages or unexpected card failures.

• Best Suited For
  • Emerson AMS 6500 ATG machinery protection racks (A6500-SR / A6500-RR)
  • Configurable alarm voting, machinery trip logic and hard relay contact outputs for critical rotating assets
  • Direct drop-in replacement for existing Emerson A6500-RC system relay card hardware

Core Technical Specifications

Field Engineer’s Tech Notes

• Confirm AMS6500 ATG firmware version, rack type (SR/RR) and saved logic configuration before replacement. The logic database must match site application.
• Apply machinery protection bypass and lockout/tagout prior to card removal; protection functions will be disabled during replacement.
• Inspect backplane edge connectors for bent pins and contamination; poor contact is the primary cause of intermittent digital input and communication faults.
• After installation, download the site logic configuration, verify all digital input statuses, simulate and test each relay output, validate alarm and trip voting logic, clear system faults, then remove bypass before returning machinery to online protection.
• ESD protection is mandatory when handling PCB and edge connectors.
• Perform periodic relay contact testing; contact wear and burnout from frequent switching are common failure modes for trip relay cards.

Adaptive QA & Testing Protocol

Each A6500-RC relay card is bench tested on AMS 6500 ATG test rack. We validate backplane power-up, 66-channel digital input response, 16 independent logic networks and 16 SPDT relay actuation. Boolean logic, timer and voting functions are simulated and verified. Front panel LED indicators, watchdog and fault reporting are checked. PCB, edge connector and relay solder joints are visually inspected for corrosion, scratches or thermal damage. Full test reports are available upon request.

Buyer’s FAQ

Q: What is Emerson A6500-RC used for? A: It is the system relay logic card for AMS6500 ATG machinery protection system. It aggregates machine alarm signals, executes configurable voting logic and provides hard relay contact outputs for turbine/compressor alarm and trip interlocks.

Q: What warranty applies for refurbished and NSFP A6500-RC? A: Refurbished and NSFP units carry a 12-month hardware warranty. Coverage excludes ESD damage, backplane surge damage, relay contact burnout, logic configuration mismatch and improper protection bypass procedures.

Q: What lead time should I expect? A: Stocked units ship 3–7 business days. If inventory is depleted, lead time increases while we source surplus Emerson A6500-RC modules.

Q: support redundant rack -RR? A: Yes, A6500-RR redundant rack supports dual A6500-RC cards for redundant relay voting configuration.