HONEYWELL 05701-A-0351

Description

1. Product Overview

2. Product Parameters

2.1 Core Input Specifications

• Input Channels: 8 isolated temperature input channels (independently configurable per channel)
• Supported Sensors:
  • Thermocouple: J, K, T, E, R, S, B, N (type-selectable per channel)
  • RTD: Pt100 (2-, 3-, 4-wire), Ni100, Cu100
• Temperature Range:
  • Thermocouple: -200°C to +1800°C (varies by type)
  • RTD: -200°C to +600°C
• Resolution: 16-bit (thermocouple), 24-bit (RTD)
• Accuracy:
  • Thermocouple: ±0.2°C (0-1000°C for K-type)
  • RTD: ±0.1°C (0-200°C for Pt100)
• Isolation Rating: 1500V AC channel-to-channel, 2500V AC channel-to-ground
• Cold-Junction Compensation: Built-in (±0.5°C accuracy) for thermocouple inputs

2.2 Electrical & System Parameters

• Power Supply: 24V DC (supplied by Series 5701 controller rack), power consumption ≤12W
• Backplane Interface: Series 5701 proprietary I/O bus
• Diagnostic Features: Open-wire detection (thermocouple/RTD), overrange/underrange alerts, sensor fault indication, LED status indicators (power, fault, channel activity)
• Configuration: DIP switch settings (sensor type, wiring configuration) + calibration via Series 5701 programming terminal
• Compatibility: Honeywell Series 5701 controllers, third-party thermocouples/RTDs from major manufacturers

2.3 Environmental & Mechanical Parameters

• Operating Temperature: 0°C to +60°C (industrial-grade range)
• Storage Temperature: -20°C to +70°C
• Relative Humidity: 5% to 95% (non-condensing), IP20 protection (rack-mounted)
• Vibration Resistance: 5-500Hz, 1g (IEC 60068-2-6)
• Shock Resistance: 15g (11ms half-sine wave, IEC 60068-2-27)
• Mounting: Series 5701 controller rack-mounted (standard 19-inch rack), plug-in module
• Dimensions: 160mm (W) × 100mm (H) × 30mm (D), Series 5701 rack-compatible form factor

2.4 Certifications & Compliance

• Industry Certifications: CE, UL/cUL Class 1 Div 2, FCC Class A, RoHS
• Compatibility: Honeywell Series 5701 process control systems, thermocouples/RTDs meeting IEC 60584/IEC 60751 standards
• MTBF: ≥700,000 hours (per Telcordia SR-332 standards for legacy I/O modules)

3. Advantages & Features

1. Dual Temperature Sensor Compatibility: HONEYWELL 05701-A-0351 supports both thermocouple and RTD inputs, eliminating the need for multiple specialized modules and enabling flexible integration with existing temperature measurement infrastructure.
2. High Precision & Accuracy: 24-bit RTD resolution and built-in cold-junction compensation ensure reliable temperature data for critical control loops (e.g., reactor temperature regulation, food safety compliance), minimizing process variability.
3. Comprehensive Diagnostics: Open-wire detection and sensor fault indication allow operators to identify faulty thermocouples/RTDs before they disrupt process control, reducing unplanned downtime and maintenance costs.
4. Isolated Channel Design: 1500V AC channel-to-channel isolation protects HONEYWELL 05701-A-0351 from electrical interference and ground loops, ensuring stable temperature measurement in noisy industrial environments.
5. Legacy System Compatibility: HONEYWELL 05701-A-0351 is fully backward-compatible with Honeywell Series 5701 controllers, requiring no system upgrades or custom programming for seamless integration.

4. Application Fields & Cases

4.1 Application Fields

• Chemical Manufacturing: Reactor temperature monitoring, distillation column temperature control, polymerization process temperature measurement
• Food & Beverage Processing: Oven/freezer temperature control, pasteurization temperature monitoring, storage facility temperature tracking
• Power Generation: Boiler exhaust gas temperature measurement, turbine bearing temperature monitoring, cooling system temperature control
• Oil & Gas Refining: Fractionation column temperature monitoring, catalytic converter temperature control, storage tank temperature measurement

4.2 Typical Cases

1. Chemical Plant Reactor Control: A regional chemical plant deployed HONEYWELL 05701-A-0351 modules in its Series 5701 system to monitor 16 reactor temperature points (K-type thermocouples) across 4 production lines. The module’s ±0.2°C accuracy ensured precise temperature regulation, reducing batch rejection rates by 15% and improving product quality.
2. Food Processing Pasteurization: A dairy processing facility used HONEYWELL 05701-A-0351 to track Pt100 RTD temperatures in 8 pasteurization tanks. The open-wire detection feature identified a faulty sensor before it caused under-pasteurization, avoiding a product recall and compliance penalties.
3. Power Plant Boiler Monitoring: A coal-fired power plant integrated HONEYWELL 05701-A-0351 into its Series 5701 system to measure boiler exhaust gas temperatures (R-type thermocouples). The module’s rugged design withstood high-temperature plant conditions, maintaining 99.7% uptime and supporting efficient boiler operation.

5. Competitive Comparison

6. Selection Suggestions & Precautions

6.1 Selection Suggestions

1. Legacy System Requirements: Choose HONEYWELL 05701-A-0351 for Honeywell Series 5701 process control systems requiring temperature input; generic modules may lack full compatibility, cold-junction compensation, and diagnostic features.
2. Sensor Type Needs: Opt for HONEYWELL 05701-A-0351 if integrating both thermocouple and RTD sensors; single-type modules are suitable for homogeneous temperature measurement environments.
3. Accuracy Criticality: Select HONEYWELL 05701-A-0351 for applications requiring high-precision temperature data (e.g., food safety, chemical batch control); lower-accuracy modules suffice for non-critical monitoring tasks.

6.2 Precautions

1. Installation Guidelines:
   • Install HONEYWELL 05701-A-0351 in Series 5701 controller racks only; use shielded twisted-pair cables for thermocouple/RTD connections (maximum distance 1000m for RTD, 500m for thermocouple) and ground the cable shield at the module end to minimize noise.
   • For 3/4-wire RTDs, ensure proper wiring to eliminate lead resistance errors—critical for accurate low-temperature measurements.
2. Configuration Notes:
   • Set sensor type and wiring configuration via DIP switches before powering on the module; calibrate using the Series 5701 programming terminal to ensure accuracy across the operating temperature range.
   • Document DIP switch settings and calibration data for future maintenance, as legacy Series 5701 systems often lack digital configuration records.
3. Troubleshooting:
   • For inaccurate temperature readings: Check sensor calibration, verify wiring (no open circuits/ground loops), and re-calibrate the module using the Series 5701 terminal.
   • For fault LED activation: Use channel activity indicators to isolate faulty channels, then inspect sensors and wiring for open circuits or short circuits.
4. Maintenance:
   • Inspect module connectors and DIP switches annually for corrosion or damage; clean with compressed air to remove dust and debris (avoid contact with electrical components).
   • Recalibrate HONEYWELL 05701-A-0351 every 2 years (or per site maintenance protocols) to maintain accuracy and compliance with industry standards (e.g., FDA 21 CFR Part 11 for food processing).
   • Stock spare HONEYWELL 05701-A-0351 modules—legacy I/O components have limited production runs, and lead times may exceed 12 weeks.

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