The Honeywell 900C73R-0100-43 serves as a high-availability Redundant I/O Scanner within the Experion PKS C-series control system. This module manages communication between the controller and remote I/O racks across fault-tolerant networks. Consequently, it ensures continuous process operation even during single-point component failures.
Technical Specifications and Redundancy Features
Control system engineers require detailed redundancy specifications for critical process applications. Therefore, we present the complete technical data for the Honeywell 900C73R-0100-43:
| Parameter | Specification |
|---|---|
| Manufacturer | Honeywell |
| Product Type | Redundant I/O Scanner Module |
| Series | Experion PKS C-series |
| Part Number | 900C73R-0100-43 |
| Communication Protocol | CEE (Control Execution Environment) Bus |
| Redundancy Mode | 1:1 hot-standby with bumpless transfer |
| Supported I/O Racks | Up to 32 remote racks per scanner pair |
| Maximum Distance | 2 km using fiber optic extension |
| Scan Rate | 10 ms typical for 1000 I/O points |
| Backplane Interface | C-series universal backplane |
| Dimensions | 140 mm x 110 mm x 75 mm |
| Weight | 0.65 kg |
| Power Consumption | 300 mA at 5 VDC, 150 mA at 24 VDC |
| Energy Storage | Supercapacitor for 72-hour time-stamp retention |
| Operating Temperature | 0°C to 60°C |
| Storage Temperature | -40°C to 85°C |
| Mounting Style | C-series I/O rack, any slot |
Advanced Redundancy and Communication Capabilities
The 900C73R-0100-43 operates in pairs, with one unit actively scanning while the other synchronizes data. Additionally, it performs automatic switchover within one scan cycle upon detecting communication faults. This module supports both copper and fiber optic media for flexible network topology design. You can integrate this scanner with protection devices like the RMS TSG TZ C static trip unit for comprehensive system monitoring. Furthermore, the Honeywell 900C73R-0100-43 includes diagnostic LEDs for scanner status, network health, and partner synchronization.
System Integration and Energy Storage
This redundant scanner maintains time-stamped process data using internal supercapacitor energy storage. Its non-volatile memory preserves configuration parameters indefinitely without batteries. The 900C73R-0100-43 communicates with up to 32 remote I/O racks, significantly reducing field wiring costs. Engineers can mix standard and redundant I/O racks within the same scanner network. Typical applications include refinery furnace control, turbine monitoring, chemical reactor safety, and critical pipeline operations.
Installation and Configuration Guidelines
Mount two Honeywell 900C73R-0100-43 modules in adjacent slots for proper redundant operation. Configure one scanner as the primary and the other as standby through the Experion engineering tools. Verify both modules receive identical firmware revisions and network configurations. Finally, test the automatic switchover function during commissioning to confirm bumpless transfer.
Details
| Weight | 0.2 kg |
|---|---|
| Dimensions | 85 × 65 × 30 mm |
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