Description
1. At-A-Glance Executive Brief
- Model: CSI 6500 (AMS 6500 System Rack)
- Brand: Emerson (Epro)
- Part Type: 19-Inch Machinery Protection Subrack Chassis
- Lifecycle Status: Active / Supported Platform
- Form Factor: 19-inch width, 3U height, 84HP
- System Compatibility: CSI 6500 / AMS 6500 ATG Card Set
2. Technical Introduction
Legacy turbine protection panels often occupy excessive cabinet space while isolating critical machinery safety logic from modern predictive diagnostic frameworks.
Plant operators struggle to bridge the gap between hardwired safety shutdown requirements and advanced vibration analysis without installing fragmented, multi-vendor hardware architectures.
The Emerson CSI 6500 system rack resolves this layout dilemma by housing up to 11 high-density protection and communication cards inside a single 19-inch, 3U enclosure. It manages internal power distribution, card-to-card bus communication, and backplane signal routing, delivering a fully compliant API 670 machinery protection node that streams live diagnostic data straight to DeltaV or Ovation control networks.
3. Core Technical Specifications
| Parameter | Value |
| Chassis Dimensions | 19-inch width, 3U height (84HP) |
| Slot Capacity | Up to 11 protection/process cards + relay & comm cards |
| Nominal Supply Voltage | 24 VDC (19 to 32 VDC range) |
| Power Consumption Slots | <100 W |
| Power Consumption Outputs | <150 W |
| Operating Temperature | -20°C to 70°C (-4°F to 158°F) |
| Storage Temperature | -40°C to 85°C (-40°F to 185°F) |
| Relative Humidity | 5% to 95% non-condensing |
| Compliance Standards | API 670 |
| Weight | 2,400 g (5.3 lbs) |
4. Field Engineer’s Tech Notes
- External Power Load Balancing: When wiring redundant 24 VDC power feeds to the rear terminal blocks, ensure wire gauge thickness adequately handles peak amp loads during full system trip sequences to prevent voltage sag across the internal backplane bus.
- Backplane Pin Inspection: Prior to sliding expensive monitoring cards into the subrack slots, inspect the rear DIN connectors for residual packaging debris or bent guide pins that can short the internal communication rails during insertion.
5. Adaptive QA & Testing Protocol
Bench evaluation of the chassis involves verifying internal power bus distribution rails across all active slots using a calibrated multimeter under variable DC load testing. Backplane communication traces undergo continuity and packet-error checks to guarantee reliable data transmission between installed monitoring modules and communication gateway cards. Comprehensive test verification sheets and structural inspection logs are available upon request prior to dispatch.
6. Buyer’s FAQ
- What warranty terms apply to this system rack?
All chassis units include a standard 12-month operational warranty covering manufacturing integrity and backplane bus functionality.
- Is this subrack supplied as New Surplus or refurbished?
We stock factory-sealed New Surplus (NSFP) hardware alongside certified refurbished chassis frames depending on immediate plant availability.
- How fast can an emergency replacement rack ship out?
Expedited international air freight options are available around the clock to support urgent plant turnaround schedules and minimize outage extensions.



