Honeywell 900RR0-0001 CPU Rack
Honeywell 900RR0-0001 CPU Rack
Configured for redundant CPU execution in HC900 hybrid controller systems, the Honeywell 900RR0-0001 (900RR0-0001 CPU rack) provides direct mechanical and electrical mounting for dual controller modules and associated I/O assemblies.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 900RR0-0001 |
| Brand | Honeywell |
| Origin | USA |
| Weight | Approx. 3.79 lbs |
| Dimensions | Rack-mounted form factor (HC900 cabinet) |
| Operating Temp | 0 to +60 deg C |
| Power Consumption | Passive distribution via HC900 power module |
| Core Function | Houses redundant CPUs and modular I/O cards |
4-20 mA HART Loop Protocol
The rack supports integration of HC900 modules that utilize 4-20 mA HART loop protocol for process variable transmission. This ensures compatibility with hybrid control environments where analog signal conditioning and digital diagnostics coexist. Channel-to-channel isolation is maintained across the backplane, preventing interference between redundant CPUs and distributed I/O modules.
Frequently Asked Questions
Q: Does the 900RR0-0001 rack allow hot-swap of CPU modules? A: CPU modules can be replaced while power remains applied; redundancy firmware determines switchover behavior.
Q: How is backplane current distributed in redundant configurations? A: The rack itself does not consume active current; regulated DC is distributed from the HC900 power supply module across CPU and I/O slots.
Q: Is firmware upgrade compatibility affected by rack design? A: No, firmware compatibility is determined by CPU module architecture; the rack provides only physical and electrical interconnect.
Field Installation Guidelines
- Mount the rack within the HC900 cabinet using designated rail supports.
- Ensure shielded cables are properly grounded at a single point to minimize noise coupling.
- Maintain clearance for airflow around CPU modules to prevent localized heating.
- Verify redundant CPU slot alignment before insertion to avoid connector stress.
- Follow standard industrial wiring practices: segregate analog and digital signal routing, and secure field wiring to prevent vibration-induced loosening.
Honeywell 900RR0-0001 CPU Rack
