Honeywell 05701-A-0361 Controller Module (System 57 Series)
05701-A-0361 is a 16-channel relay output (DO) module of the Zellweger System 57 / SIEGER 57 series under Honeywell. It is used for switch quantity control and interlock drive in DCS / safety systems, and is commonly found in old key systems in the petrochemical, power, and chemical industries.
I. Basic Information
Model: 05701-A-0361
Manufacturer: Honeywell (formerly Leeds & Northrup)
System: System 57 (compatible with TPS/TDC3000/Experion PKS)
Type: 16-channel relay output module (dry contact)
Function: Digital output, equipment start/stop, alarm interlock, valve drive
Connector: 50-pin D-Sub; Orange terminal block for easy on-site wiring
Core Parameters
Channels: 16 independent relay outputs (normally open contacts)
Contact capacity: 2A @ 250VAC / 2A @ 30VDC (resistive load)
Electrical isolation: Coil – Contact 4000VAC; Channel – Backplane 500VAC RMS
Operating temperature: -40℃ ~ +70℃
Power supply: 24VDC, redundant design
Response time: Typical <10ms
Certification: Industrial grade, explosion-proof zone compatible, supports SIS safety loop
Functional Features
High-reliability relay output: Dry contacts directly drive solenoid valves, contactors, alarm lights, no intermediate relays required, strong anti-interference.
Full channel isolation: Each channel is independently isolated, faults do not spread, suitable for critical interlock circuits.
Online replaceable: Supports hot swapping, replacement does not affect system operation, reduces downtime risk.
Status diagnosis: Module self-check + channel status feedback, facilitates rapid fault location.
Wide temperature and redundancy: Redundant power supply + wide temperature design, suitable for harsh working conditions in petrochemical, power, etc.
Typical Applications
Petrochemical: Valve / pump start/stop, emergency interlock (ESD) in catalytic, reforming units
Power: Control of auxiliary equipment in boilers, steam turbines, alarm circuits
Natural gas: Safety shut-off valve control in compressor stations, distribution stations
Manufacturing: Critical equipment interlocks, production line safety shutdown circuits
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