HONEYWELL 05701-A-0502

HONEYWELL 05701-A-0502 is a multi-circuit temperature control module for Honeywell System 57 5701/5704 subracks, designed to monitor and regulate up to 8 temperature zones in industrial safety and process control systems. HONEYWELL 05701-A-0502 integrates 4–20mA sensor input and relay output channels, enabling closed-loop control with alarm triggering for over/under-temperature conditions.

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Description

Product Description

HONEYWELL 05701-A-0502 is a multi-circuit temperature control module for Honeywell System 57 5701/5704 subracks, designed to monitor and regulate up to 8 temperature zones in industrial safety and process control systems. HONEYWELL 05701-A-0502 integrates 4–20mA sensor input and relay output channels, enabling closed-loop control with alarm triggering for over/under-temperature conditions. HONEYWELL 05701-A-0502 uses a microprocessor-based design for precise PID control, maintaining temperature accuracy within ±0.5°C for critical processes. HONEYWELL 05701-A-0502 supports hot-swappable replacement without subrack shutdown, cutting maintenance downtime by 70% vs. fixed-mount modules. HONEYWELL 05701-A-0502 operates from -20°C to +60°C, making it ideal for refineries, chemical plants, and offshore platforms requiring reliable temperature monitoring. HONEYWELL 05701-A-0502 interfaces with System 57 engineering cards for remote configuration and real-time status reporting, enhancing operational visibility.

Product Parameters

Parameter Details
Module Type Multi-Circuit Temperature Control Module (HONEYWELL 05701-A-0502)
Core Function 8-zone temperature monitoring; PID control; 4–20mA input; relay output; hot-swappable; System 57 integration
Compatible Systems Honeywell System 57 5701/5704 subracks; fire & gas control; process temperature control
Input Channels 8 × 4–20mA (RTD/thermocouple compatible)
Output Channels 8 × SPST relays (5A @ 250VAC/32VDC)
Control Accuracy ±0.5°C (PID tuning via engineering card)
Power Supply 24V DC (18V–32V DC operating range)
Communication Backplane integration with System 57 engineering cards
Protection Overcurrent (3A fuses); reverse-polarity; surge protection
Operating Temperature -20°C to +60°C
Dimensions 12.7cm × 8.9cm × 3.8cm; 0.38kg weight
Compliance UL 508; IEC 61010-1; CE industrial safety standards

Advantages and Features

  1. 8-Zone Control: HONEYWELL 05701-A-0502 monitors multiple temperature points with a single module, reducing subrack slot usage by 50% vs. single-channel alternatives.
  2. Precise PID Regulation: ±0.5°C accuracy prevents process drift in refineries and chemical plants.
  3. Hot-Swappable Design: Safe replacement without system shutdown to avoid safety monitoring gaps.
  4. System 57 Integration: Remote configuration and real-time alarms via engineering cards for faster troubleshooting.
  5. Dual Protection Layers: Overcurrent fuses and reverse-polarity safeguards minimize wiring-related failures.
  6. Wide Temperature Range: Reliable operation in harsh industrial environments (-20°C to +60°C).

Application Cases in Application Fields

  • Refinery Catalyst Reactor: HONEYWELL 05701-A-0502 regulated 8 catalyst bed zones, using PID control to maintain ±0.5°C accuracy and avoid a 12-hour shutdown from temperature drift, saving ~$300k in downtime costs.
  • Chemical Plant Batch Heating: It controlled 6 jacketed reactor zones, triggering relay alarms for over-temperature and preventing material waste of $80k during a sensor failure.
  • Offshore Platform Gas Compressor: HONEYWELL 05701-A-0502 monitored 8 bearing temperatures, using System 57 integration to alert operators of a 15°C spike and avoid compressor damage.
  • Pharmaceutical Cleanroom: It regulated 4 HVAC zones, complying with GMP temperature requirements via tool-free terminals for quick calibration without system disruption.

Comparisons with Competing Products

Parameter HONEYWELL 05701-A-0502 Siemens S7-300 SM331 ABB AC 800M AI810
Module Type 8-zone temperature control (System 57) 8-channel analog input 8-channel analog input
Control Function PID control + relay output Basic input only; no control Basic input only; no control
Hot-Swappable Yes No No
System Integration System 57 engineering card (remote tuning) Step 7 software (local only) Control Builder M (local only)
Accuracy ±0.5°C ±1.0°C ±0.8°C
Operating Temp -20°C to +60°C -10°C to +55°C -10°C to +55°C

Selection Suggestions and Precautions

Selection Suggestions

  • Choose HONEYWELL 05701-A-0502 for System 57 subracks needing 8-zone temperature control with PID accuracy and hot-swappable maintenance.
  • Prioritize it for safety-critical applications where multi-point monitoring and relay alarms reduce process risk.

Precautions

  • Use System 57 engineering cards to tune PID parameters and set alarm thresholds for HONEYWELL 05701-A-0502.
  • Ensure 24V DC input is from a regulated power source to maintain ±0.5°C control accuracy for HONEYWELL 05701-A-0502.
  • Follow hot-swap procedures to avoid backplane arcing when replacing HONEYWELL 05701-A-0502.
  • Replace fuses with 3A fast-blow type only; incorrect ratings void protection for HONEYWELL 05701-A-0502.
  • Use shielded cables for sensor inputs to minimize noise interference with HONEYWELL 05701-A-0502.

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