05701-A-0330 Honeywell Signal Conditioning Monitor Module

• Brand
  Honeywell
• Model
  05701-A-0330  
• Product Name
  Signal Conditioning Monitor Module
• Place of Origin
  USA
• Customs HS Code
  85389000
• Power Supply
  0.42 A
• Dimensions
  255 mm × 158 mm × 36 mm
• Weight
  1.02 kg
• Operating Temperature
  0 ℃ ~ +60 ℃
• Storage Temperature
  -40 ℃ ~ +85 ℃
• Warranty
  12 month
• Product Status
  new and original

Working Principle of Honeywell 05701-A-0330 (High Integrity Relay Card for System 57)

Applicable System: Honeywell Analytics System 57 gas detection rack;

Module Category: High-integrity relay interface card.

This module communicates with the System 57 control card through the rack backplane bus. It receives digital status information from the upstream control card, such as gas concentration alarm stages, sensor fault alerts, inhibit signals and system diagnostic data.

The internal logic circuit evaluates whether gas readings exceed the preconfigured A1/A2/A3 alarm thresholds, and detects fault conditions including sensor open-circuit, cable short-circuit, power loss and onboard hardware malfunctions. Seven configurable relays support flexible assignment for independent or collective alarm logic. One dedicated fault relay adopts a fail-safe architecture: it remains energized under normal operation and de-energizes upon fault or power loss to activate the fault alarm circuit.

All relays are equipped with SPCO contact outputs (COM / NO / NC). Upon receiving trigger commands, mechanical relay contacts switch state to actuate external field equipment including alarm horns, strobe beacons, exhaust fans and ESD interlock loops. The embedded firmware offers adjustable alarm delay, which prevents false trips induced by transient signal spikes and enables staged alarm activation.

It provides terminal interfaces for 4–20 mA gas detectors to capture analog sensor signals. The internal circuit supports sink or source mode selection via onboard jumpers. Shielded cabling is applied for noise suppression to maintain reliable signal acquisition.

The module is powered by 24 V DC supplied from the rack backplane. Continuous self-diagnostic routines monitor its power supply, relay drive circuitry and communication link throughout operation. The fault relay will activate promptly once an internal anomaly is identified.

Applicable System: Honeywell Analytics System 57 gas detection rack system;

Module Type: High-integrity relay field interface card.

Backplane Bus Connection

Insert the module into the assigned slot of the System 57 rack. The rear D-SUB connector establishes backplane communication and power supply interconnection with the paired single-channel control card automatically. Confirm the connector is fully engaged and correctly aligned.

Field Detector Signal Wiring

Route 4–20 mA signal cables from gas detectors to terminals S, 01, NS, 0V and 24V on the orange front terminal block. Both 3-wire and 4-wire transmitters are supported. Sink or source signal mode can be selected via the on-board jumper. Shielded twisted-pair cable is mandatory for field signal wiring; the shield should be grounded only at the rack end to eliminate ground loops.

Relay Contact Output Wiring

Every relay features SPCO contacts including Common (COM), Normally Open (NO) and Normally Closed (NC). Connect external devices such as alarm horns, strobe beacons, ventilation actuators and ESD interlock circuits to COM/NO/NC terminals. Relay contact rating: 24 VDC / 125 VAC, maximum 10 A. Separate wiring for alarm and fault loads based on relay configuration, covering A1/A2/A3 alarm relays and dedicated fault relay.

Power Wiring

The module draws its operating power from the System 57 rack backplane; independent external power supply for this card is not needed. If auxiliary power is required for field transmitters, 24 VDC and 0V can be taken from the dedicated power terminals on the terminal block.

Ground Wiring

Terminate the rack protective earth terminal to the site safety ground. Signal shield ground shall be isolated from power protective ground.

Wiring Precautions

Disconnect rack power prior to any wiring work and verify polarity to prevent damage from reverse connection. Run low-current signal cables separately from high-power relay load cables with adequate clearance to minimize EMI. Never exceed the rated contact load of relays. Configure the on-board jumper to define 4–20 mA sink or source mode before powering up the system.

FAQ for Honeywell 05701-A-0330 UV Flame Detector

Q: What is Honeywell 05701-A-0330?

A: Honeywell 05701-A-0330 is a UV flame detector, designed for flame monitoring and fire detection in combustion systems, furnaces, burners and industrial boiler applications.

Q: What is the working principle of Honeywell 05701-A-0330?

A: It detects ultraviolet radiation emitted by flame combustion. It can quickly identify flame status and send alarm or shutdown signals to the burner control system.

Q: What are the main application areas of Honeywell 05701-A-0330?

A: It is widely used in gas burners, oil burners, industrial boilers, incinerators, chemical heating furnaces and power plant combustion equipment.

Q: What signal output does Honeywell 05701-A-0330 provide?

A: It provides flame status switching signals compatible with Honeywell burner control systems, and can link with flame amplifiers and combustion controllers.

Q: Is Honeywell 05701-A-0330 compatible with other Honeywell flame control accessories?

A: Yes, it matches Honeywell flame signal amplifiers and burner controllers in the same 05701 series for a complete flame safety monitoring loop.

Q: Is Honeywell 05701-A-0330 still in production?

A: This UV flame detector is an older model. We supply tested surplus and refurbished units for burner maintenance and replacement.

FX-USI-0002
CC-PCNT02
FC-QPP-0001
FC-SCNT01
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FC-QPP-0002
51198685-100