Description
Key Technical Specifications
- Product Model: HD22010-3
- Manufacturer: Emerson
- System Platform: DeltaV S-Series CHARM Electronic Marshalling
- Number of Channels: 8 individually isolated high-side digital outputs
- Output Voltage Range: 18–30 V DC (24 V DC nominal)
- Continuous Current per Channel: 3 A at 40 °C, derating to 2 A at 60 °C for thermal stability
- Maximum Load Power: 72 W per channel (limited by internal protection)
- Switching Type: High-side MOSFET with integrated freewheeling diodes for inductive loads
- Isolation: 250 V AC channel-to-channel and channel-to-backplane, eliminating ground loop issues
- Response Time: ≤ 5 ms on/off (including CHARM baseplate), critical for fast-acting valve control
- Diagnostics: Open-wire detection, short-circuit detection, channel status LED, and automatic shutdown on overload
- Operating Temperature: -40 °C to +70 °C (full load to 60 °C), suitable for harsh field environments
- Hazardous Area Certification: Class I Div 2 / Zone 2, ATEX/IECEx when installed in certified enclosures
- Safety Integrity: Supports SIL 2/3 capable applications with LS CHARM baseplates
- Power Consumption: < 2.5 W quiescent, minimizing backplane loading
- MTBF: > 1,800,000 hours (demonstrated per Telcordia SR-332)
- Compliance: CE, UL, CSA, FM, IEC 61508 (functional safety)
Technical Architecture & Functional Positioning
The HD22010-3 occupies the field termination layer in DeltaV’s Electronic Marshalling architecture. Each CHARM eliminates traditional cross-wiring by providing a single, universal connection point that adapts to the required I/O type via software configuration. This high-density high-power DO CHARM is specifically engineered for applications where standard 0.5–1 A outputs are insufficient, such as large solenoid valves in emergency shutdown systems, motor-operated valves, or high-current annunciator circuits.
Internally, the module uses robust high-side MOSFET switches with active current limiting and thermal monitoring. When a channel exceeds 3.5 A or detects excessive temperature, the output automatically shuts down while raising a diagnostic alarm—preventing device damage and enabling predictive maintenance. Channel-to-channel isolation of 250 V AC eliminates the need for external interposing relays in mixed-voltage installations, reducing cabinet space and commissioning time.
In safety-instrumented systems (SIS), pairing the HD22010-3 with LS (Logic Solver) CHARM baseplates allows direct connection to final elements rated up to 3 A without additional marshalling, achieving SIL 2/3 capability with full diagnostics (line monitoring, proof testing, and partial stroke support when used with appropriate valve positioners).
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