95DSS3-1CEX FIREYE DCS Flame Scanner

• Brand
  FIREYE
• Model
  95DSS3-1CEX
• Product Name
  InSight II Explosion-Proof Integrated UV/IR Flame Scanner with Continuous Self-Diagnosis
• Place of Origin
  United States
• HS Code
  8543709000
• Dimensions
  Diameter 112mm, total length 246mm
• Weight
  3.22kg
• Operating Temperature
  -40℃ ~ +65℃
• Storage Temperature
  -40℃ ~ +85℃
• Power Supply
  24VDC
• Warranty
  12month
• Product Status
  New and original

Backed by abundant in-stock inventory and nearly 20 years of industry experience, our company stands as a leading player in the industrial control sector.We offer an extensive range of industrial control products covering numerous models. Should you have any other requirements, please feel free to contact us, and we will respond to you promptly.

Our main brand:

1.ABB's module cards, touch screens, controllers, etc., such as PP846 touch screen, IGCT starting with 5SHY, PM starting controller, AI, DO starting input/output module, SP starting Bailey module, etc

2.GE's module card CPUs, such as VMIC starter, IS200, IS215, IS400, IS420 series, etc,

3.Emerson's card components and EPRO probes, Westinghouse 1C series, Honeywell CC series, Schneider 140 series, Envision full series, Bentley 3500 series, Rexroth motors and drives, and Foxboro small modules.

1. Power Input Parameters

Nominal supply voltage: 24 VDC

Permissible voltage range: 20.4 VDC ~ 26.4 VDC (+10% / -15% deviation)

Typical operating current: 0.35 A

Power consumption: 8.5 VA

Power supply requirement: voltage rising time ≥20ms for stable startup

Recommended power adapter: Fireye dedicated industrial power supply model 60-2685.

2. Analog Current Output (2 channels)

Output signal: 4~20mA DC linear current signal

Common reference ground: negative terminal of 24VDC power supply

Maximum allowable load resistance: 750 Ω

Application: transmit flame intensity analog signals to DCS and PLC systems.

3. Relay Output Parameters

Configuration: 2 SPDT flame detection relays, 1 SPST fault alarm relay

Applicable to the -1 series including 95DSS3-1CEX:

Minimum contact load: 10mA @ 5VDC

Maximum contact load: 100mA @ 30VDC, 100mA @ 50VAC

Working logic of fault relay: normally energized after power-on and successful self-inspection.

4. Electrical Indicators of Communication Interface

Interface type: isolated RS485 bus

Bus operating voltage: 5 VDC

Static standby current of bus: ≤15mA

Transmission mode: differential signal transmission with built-in surge protection.

5. Auxiliary Electrical Characteristics

Ambient operating temperature: -40℃ ~ +65℃; allowable internal probe temperature: ≤80℃

Built-in protection circuits: overvoltage protection, reverse polarity protection and short-circuit automatic protection

Sensor access mode: passive optical signal input, without external excitation power supply output.

1. General Pre-Inspection Steps

Power Inspection: Measure terminal voltage with a multimeter to ensure it remains within the 20.4~26.4VDC rated range. Check for reversed polarity, loose terminals, blown fuses and power fluctuation issues, and ensure the power rise time meets the ≥20ms stable startup requirement.

Hardware Inspection: Examine the lens for soot contamination, cracks and condensation; check for aging seals, vibration-induced probe loosening, and internal water/oil corrosion of the device housing.

Purge Air Inspection: Verify the pressure and flow of cooling purge air, eliminate lens condensation caused by insufficient air supply.

Wiring & Grounding Inspection: Check cables for breakage, implement single-point grounding for shielding layers, separate power cables from signal cables, and confirm correct RS485 terminal resistance settings and reliable equipment shell grounding.

Fault Query & Reset: Access the error history menu to view up to 10 recent fault records. Perform a 4-second PROGRAM key soft reset or power cycle hard reset to clear temporary faults.

2. Common Faults, Causes and Solutions

Fault 1: No display, device fails to power on

Causes: Missing 24VDC power supply, reversed power polarity, blown internal fuse, motherboard damage from power surge.

Solutions:

① Correct power wiring polarity and verify stable input voltage;

② Replace the faulty fuse;

③ Perform a complete power cycle restart;

④ Replace the flame scanner if the motherboard is damaged.

Fault 2: Continuous fault relay de-energization and alarm

Causes: Internal self-test failure, sensor abnormality, memory error, power fluctuation, severe lens contamination leading to signal loss and system lockout.

Solutions:

① Record fault codes and check against the official manual;

② Reset the device and restart the power supply;

③ Clean the observation lens and recheck purge air supply;

④ Restore factory settings; replace the device if internal hardware is faulty.

Fault 3: Low flame signal intensity (FQ value far below the normal 60~100 range)

Causes: Lens soot blockage or condensation, low gain parameters, mismatched flame flicker frequency, unstable on-site combustion, offset probe installation position.

Solutions:

① Clean the lens with professional lens paper and increase purge air flow to remove condensation;

② Appropriately raise IR/UV sensor gain values;

③ Re-run automatic flame frequency matching learning;

④ Adjust the probe angle to align with the flame center;

⑤ Optimize on-site fuel combustion stability.

Fault 4: False flame alarm (flame relay closed with no actual flame)

Causes: High-temperature furnace wall infrared interference, cross-interference from adjacent burners, improper frequency band configuration, excessive sensor gain, lens stray light reflection.

Solutions:

① Enable UV+IR dual-sensor composite detection mode;

② Adjust flicker frequency parameters to avoid interference bands;

③ Moderately reduce sensor gain;

④ Install shading baffles and reposition the probe away from high-temperature furnace walls;

⑤ Strengthen cable shielding and isolation measures.

Fault 5: Flame loss misjudgment (normal flame but relay fails to pull in)

Causes: Excessively high flame ON threshold, low sensor gain, overlapping ON/OFF thresholds, mismatched frequency band, partial lens blockage.

Solutions:

① Properly lower the flame ON threshold (standard: 30%~40%) and set OFF threshold to 15%~20%;

② Increase sensor gain appropriately;

③ Recalibrate flame flicker frequency;

④ Thoroughly clean the lens;

⑤ Moderately extend relay pull-in delay to avoid misjudgment from transient flame fluctuation.

Fault 6: Abnormal 4~20mA analog output

Phenomenon 1: Constant 4mA output

Causes: Flame signal loss lockout, loop open circuit, load resistance exceeding 750Ω.

Solutions: Check flame signal status and wiring continuity, control load resistance within the 750Ω rated range.

Phenomenon 2: Output value inconsistent with displayed flame intensity

Causes: Incorrect output mapping parameters, internal circuit drift.

Solutions: Enter the service menu to calibrate analog output and reset mapping parameters.

Phenomenon 3: Random output fluctuation

Causes: Irregular grounding, on-site electromagnetic interference.

Solutions: Implement standard single-point grounding and separate power cables from signal cables.

Fault 7: RS485 Modbus communication failure

Causes: Wrong A/B wiring, inconsistent communication parameters (address, baud rate, parity bit), missing bus terminal resistor, long cable-induced signal attenuation, strong electromagnetic interference, damaged communication port.

Solutions:

① Recheck RS485 A/B wiring definition;

② Unify communication parameters with the host computer;

③ Install 120Ω terminal resistors at both ends of the bus;

④ Use shielded cables and keep away from inverters and high-power equipment;

⑤ Replace the device if the communication port is damaged.

Fault 8: Intermittent alarms and unstable signals

Causes: Loose terminals, poor grounding, vibration-induced probe displacement, intermittent lens condensation, unstable power voltage.

Solutions: Fasten all wiring terminals, reinforce the mounting bracket, optimize purge air supply, stabilize power input and strengthen shielding protection.

3. Protection Function Verification Test

Flame Failure Test: Block the lens during normal combustion, verify delayed relay disconnection and 4mA fixed output to confirm normal protection action.

Anti-Interference Test: Simulate equipment startup vibration, confirm the startup threshold amplification function effectively suppresses false alarms.

Protection Performance Test: Simulate undervoltage, reverse connection and short-circuit faults, verify automatic protection activation without hardware damage.

4. Troubleshooting & Maintenance Precautions

Prohibit hot plugging of wires during device operation;

Strictly limit relay load within rated parameters (100mA@30VDC/50VAC);

Do not use coarse cloth to wipe the lens to prevent scratch damage;

Forbid unauthorized modification of internal firmware; damaged devices shall be sent to official Fireye for professional maintenance;

Record all modified parameters and fault logs after troubleshooting for file archiving.

Frequently Asked Questions (FAQ)

1.How fast will you reply to my inquiry?

We process all inquiries efficiently and will respond promptly once we receive your message.

2.Do you carry large inventory of industrial control parts?

We maintain massive ready stock of mainstream automation spare parts to shorten lead times.

3.Can you source discontinued or obsolete PLC & DCS modules?

Absolutely.
We specialize in sourcing hard-to-find, obsolete and out-of-production industrial control components.

4.Do you inspect goods before shipment?

Every product undergoes thorough inspection before packing and dispatch.

5.Can you ship orders worldwide?

We provide global shipping with flexible logistics for urgent and regular orders.

6.What payment methods are available?

We accept multiple secure payment options. Please contact our sales team for detailed terms.