The Honeywell 900B08-0202 analog output module provides eight isolated current output channels for the ControlEdge HC900 hybrid control system . This module converts digital control signals into precise 0–20 mA or 4–20 mA analog outputs for field devices. It offers galvanic isolation between channel groups and the logic circuit for enhanced noise immunity. This module suits demanding process control applications in chemical, petrochemical, and power generation facilities .
Technical Specifications of Honeywell 900B08-0202
The Honeywell 900B08-0202 module features eight independent output channels grouped into two isolated groups of four (channels 1–4 and 5–8) . It delivers a current range of 0 to 21.0 mA, selectable per channel, and drives loads up to 750 Ω . The module achieves ±0.1% full-scale accuracy with a resolution of 13+ bits (1 part in 13,332) . It provides 500 VDC isolation between groups and from logic to field circuits . The module consumes a maximum of 225 mA from the 5 V supply and 350 mA from the 24 V supply . It includes non-volatile memory for calibration data storage and supports field calibration per channel .
| Parameter | Specification |
|---|---|
| Model Number | Honeywell 900B08-0202 |
| Product Type | Analog Output Module |
| Output Channels | 8 (isolated in 2 groups of 4) |
| Signal Type | 0–20 mA / 4–20 mA (selectable) |
| Current Range | 0–21.0 mA maximum |
| Load Resistance | 750 Ω maximum per channel |
| Accuracy | ±0.1% of full scale |
| Resolution | 13+ bits (1 part in 13,332) |
| Galvanic Isolation | 500 VDC (group-to-group, logic-to-field) |
| Modules per Rack | 4 max (internal 24V), 10 max (external 24V) |
| Power Supply Loading | 5V @ 225 mA max, 24V @ 350 mA max |
| Terminal Block | 36-position Euro style (900TCK0001) |
| Dimensions (H x W) | 137 mm x 35.6 mm (5.4″ x 1.4″) |
| Weight | Approx. 0.4 kg |
| Diagnostics | Calibration, configuration, supply voltage monitoring |
| Output Verification | Feedback to controller confirms output current |
Key Features and Diagnostics
The Honeywell 900B08-0202 module offers comprehensive diagnostic functions for reliable operation. It continuously monitors factory calibration, field calibration, and configuration integrity . The module includes output feedback circuitry that confirms actual current flow to the controller . It supports configurable failsafe modes, including “Hold Last Value” and user-defined failsafe values . A green blinking LED indicates active scanning, while a red LED signals module or channel diagnostics .
Integration and Application
The Honeywell 900B08-0202 mounts in a compatible HC900 rack and connects via a 36-position Euro-style terminal block (model 900TCK0001) . This module controls multiple valves, provides speed references to VFDs, and drives I/P transducers for pneumatic systems . You can deploy this analog output module for precise current loop control in distributed control applications .
Details
| Weight | 0.2 kg |
|---|---|
| Dimensions | 85 × 65 × 30 mm |
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