ABB SF810-LOS-IR-TL-C-W Replacement for SF810 Series

Product Overview

ABB SF810-LOS-IR-TL-C-W Replacement for SF810 Series: Smooth Transition & Legacy System Compatibility

Upgrading or replacing an ABB SF810-LOS-IR-TL-C-W infrared flame scanner does not have to mean extended downtime or costly system redesigns. The SF810-LOS-IR-TL-C-W is a proven infrared flame detection module within ABB’s SF810 Series, widely deployed in industrial burner management systems, boiler combustion control panels, and process heater applications. Whether your existing unit has reached end-of-service life, suffered field damage, or is simply being phased out as part of a broader control system modernization project, this replacement solution is engineered to deliver a seamless, drop-in transition with minimal engineering intervention.

The SF810-LOS-IR-TL-C-W operates as a line-of-sight infrared detector, designed to monitor flame presence and stability in demanding combustion environments. Its compact housing and standardized terminal layout make it directly compatible with existing SF810 Series mounting brackets, conduit entries, and field wiring harnesses. Engineers migrating from earlier SF810 variants — including the SF810-LOS-UV-TL-C-W ultraviolet model or the SF810-LOS-IR-TL-C-B variant — will find that the terminal block pinout, signal output range (typically 4–20 mA or relay contact), and mechanical footprint remain consistent across the SF810 product family, eliminating the need for panel modifications or cable re-routing.

For sites running ABB’s Duoblock or Trinomic burner management platforms, the SF810-LOS-IR-TL-C-W integrates directly with the BCU (Burner Control Unit) signal input cards without requiring firmware changes or recalibration of the flame amplifier module. Field technicians familiar with the SF810 Series will recognize the standard 3-wire connection scheme and the familiar sensitivity adjustment potentiometer, reducing commissioning time significantly. Where the existing installation includes an SF810 Series junction box or remote amplifier unit such as the SF810-AMP-IR, the replacement scanner connects identically, preserving all existing cable lengths and conduit routing.

Sites undergoing broader DCS or PLC migration — for example, transitioning from legacy ABB Advant OCS or MOD 300 platforms to current AC500 PLC or System 800xA DCS architectures — can retain the SF810-LOS-IR-TL-C-W as a stable field instrument layer while upgrading the upper control layers. The scanner’s analog output is fully compatible with standard AI (Analog Input) modules on AC500 I/O racks, and its relay output can be wired directly into digital input cards on both legacy and modern ABB I/O backplanes. This layered migration approach avoids the cost and risk of replacing proven field instrumentation alongside the control system upgrade.

In combustion train applications, the SF810-LOS-IR-TL-C-W is commonly installed alongside complementary components including the SF810 Series sight pipe assembly, UV/IR combination detectors for dual-fuel burners, and dedicated flame signal conditioners. During a retrofit or upgrade project, it is common to simultaneously evaluate the condition of associated components such as the SF810 purge air assembly, the optical lens cleaning system, and the local flame indicator panel. Replacing the scanner as part of a planned maintenance window — rather than reactively after failure — allows all associated components to be inspected and serviced in a single scheduled outage, minimizing total downtime impact.

For control cabinet space planning, the SF810-LOS-IR-TL-C-W’s external detector head mounts directly at the burner sight port, with only the signal cable routed back to the control panel. This means no additional DIN rail space is required inside the MCC or control cabinet, and the existing cable tray allocation remains unchanged. Sites with tight panel space — a common constraint in older plant rooms — benefit from this field-mounted architecture, as the only panel-side component is the optional remote amplifier or the BCU input card itself.

Communication protocol compatibility is straightforward: the SF810-LOS-IR-TL-C-W uses hardwired analog and discrete signal outputs rather than fieldbus communication, making it inherently compatible with any control system capable of reading 4–20 mA signals or volt-free relay contacts. This eliminates protocol translation concerns that often arise when migrating from legacy HART or proprietary fieldbus instruments to modern PROFIBUS or PROFINET-based I/O systems. The scanner can coexist within a mixed-protocol field environment without any gateway or signal converter requirements.

Compatibility Comparison Table

Seamless Upgrade Solutions

A successful SF810-LOS-IR-TL-C-W migration typically involves coordinating several related field and panel components. The SF810 Series purge air assembly ensures the optical path remains clear in dusty or high-particulate combustion environments — replacing it alongside the scanner head prevents premature fouling of the new unit’s lens. The SF810-AMP-IR remote amplifier, where installed, should be inspected for capacitor aging and contact wear; a replacement amplifier can be sourced and pre-configured before the scheduled outage to minimize on-site work. For dual-fuel burner applications, the SF810-LOS-UV-TL-C-W ultraviolet variant may be installed in parallel to provide UV/IR cross-confirmation, a common requirement in gas turbine and process heater safety systems.

On the control system side, engineers migrating to ABB AC500 PLC platforms will typically pair the SF810 scanner output with AC500 SM560 or DC532 analog input modules, which accept standard 4–20 mA signals without additional signal conditioning. For System 800xA DCS migrations, the S800 I/O AI810 or AI820 analog input modules provide direct compatibility. Where the existing installation uses a dedicated flame signal conditioner or safety relay — such as an ABB or Siemens burner safety relay module — the SF810-LOS-IR-TL-C-W’s relay output wires directly into the safety relay’s flame input terminals without modification. Sight pipe extensions, optical alignment tools, and terminal block connectors compatible with the SF810 Series are available to complete the installation kit and ensure a clean, code-compliant retrofit.

Retrofit Guidance FAQ

Q: Can I replace the SF810-LOS-IR-TL-C-W without modifying existing field wiring?
A: Yes. The SF810-LOS-IR-TL-C-W uses the standard SF810 Series 3-wire connection scheme. Existing cable lengths, conduit entries, and terminal block assignments are preserved in a direct replacement.

Q: Do I need to reprogram my PLC or DCS after replacement?
A: No program changes are required. The replacement scanner produces identical signal outputs (4–20 mA and relay contact) to the original unit. Scaling, alarm setpoints, and interlock logic remain unchanged.

Q: Is the SF810-LOS-IR-TL-C-W compatible with PROFIBUS or PROFINET systems?
A: The scanner uses hardwired analog and discrete outputs, not fieldbus communication. It connects to any AI or DI module regardless of the upper-level fieldbus protocol, with no gateway required.

Q: What is the physical installation space requirement?
A: The detector head mounts at the burner sight port using the standard SF810 flange. No additional DIN rail or panel space is required. The installation footprint is identical to the outgoing unit.

Q: How do I verify correct operation after replacement?
A: After installation, perform a standard SF810 Series commissioning check: confirm purge air flow, verify signal output at the BCU or AI module input, and conduct a flame-on/flame-off functional test per the site’s burner management system test procedure.

Warranty Assurance

Every ABB SF810-LOS-IR-TL-C-W unit supplied by TOPNLMS is covered by a 12-month warranty from the date of shipment. Prior to dispatch, each unit undergoes functional verification including signal output testing and visual inspection to confirm it meets SF810 Series specifications. In the event of a confirmed defect within the warranty period, TOPNLMS provides replacement support with priority processing to minimize impact on your production schedule. Our technical team is available to assist with pre-shipment compatibility confirmation, installation guidance, and post-commissioning troubleshooting. Stock is maintained for fast dispatch, with global shipping available to minimize lead time for urgent replacement requirements.

For procurement inquiries, stock availability, or technical compatibility questions, contact our team directly.