burner control units
Automatic burner control units PFU
For controlling, igniting and monitoring impulse-controlled, modulating or stage-controlled gas burners, for continuous operation with ionization control.
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Overview
For controlling, igniting and monitoring impulse-controlled, modulating or stage-controlled gas burners, for continuous operation with ionization control, for intermittent operation with UV control (with UV sensors of type UVS) or as a variant for continuous operation with UV control (with UV sensor UVD 1).
Features & Benefits:
Features & Benefits:
- Display of the program status, unit parameters and flame signal
- Diagnosis and adjustment of unit parameters via optical interface, with Manual mode and air valve control
- PFU 778: for directly ignited burners of unlimited capacity
- PFU 798: for pilot and main burners of unlimited capacity, both burners can be monitored independently
- Safety time on start-up: 3, 5 or 10 s
- Safety time during operation: 1 or 2 s
- Mains voltage: 115 or 230 V AC, for grounded or ungrounded mains
Specifications
Overview
- Models
- PFU 760, PFU 780
Operating/Process Temperature Ranges
- Operating Temperature Range
- -20 to +60 deg C (-4 to +140 deg F)
- No condensation allowed
Operating Limits & Resistance
- Minimum Burner Pause Time
- 0 to 250 seconds
Control, Safety & Timing Characteristics
- Start-up Safety Time
- Adjustable: 3, 5, or 10 seconds
Ignition, Flame & Supervision Specifications
- Flame Proving Period
- 0 to 25 s
- Flame Control
- UV, ionization, or temperature (high-temp version)
Dimensions & Length Specifications
- Sensor Cable Length
- Max. 100 m
Control, Software & User Interface Specifications
- Software Interface
- BCSoft (via optical interface)
- Display Type
- 2-digit 7-segment display for program status and flame signal
Communication & Interfaces
- Fieldbus Interface
- PROFIBUS DP via PFA 700
Control, Logic & System Behavior
- Start-up Attempts
- 1 to 4
- Restart Attempts
- Up to 3 (configurable)
Air & Combustion Air Specifications
- Air Valve Control
- Integrated (PFU..L variant)
Environmental Conditions
- Enclosure Rating
- IP00 (IP20 when installed in module subrack)
Electrical Specifications
- Sensor Voltage
- ~230 V AC
- Mains Voltage
- PFU..N: 110/120 VAC
- PFU..T: 220/240 VAC
Operating Limits, Durability & Lifecycle
- Altitude Limit
- < 2000 m AMSL
Applications & Compatibility
- Applications
- PFU 760: Directly ignited burners; intermittent or continuous operation
- PFU 780: Pilot + main burners, intermittent or continuous operation
Control, Logic & Functional Behavior
- Manual Mode
- Available for commissioning and diagnostics
Dimensions & Weight
- Dimensions
- 133.4 mm H x 40.6 mm W
Standards & Certifications
- Approvals
- SIL 3 (EN 61508), EN 298:2012, FM Approved PFU..T variant only; NFPA 86 Compliant, AGA Approved, UKCA Certified, Eurasian Customs Union
Overview
- Models
- PFU 760, PFU 780
Operating/Process Temperature Ranges
- Operating Temperature Range
- -20 to +60 deg C (-4 to +140 deg F)
- No condensation allowed
Operating Limits & Resistance
- Minimum Burner Pause Time
- 0 to 250 seconds
Control, Safety & Timing Characteristics
- Start-up Safety Time
- Adjustable: 3, 5, or 10 seconds
Ignition, Flame & Supervision Specifications
- Flame Proving Period
- 0 to 25 s
- Flame Control
- UV, ionization, or temperature (high-temp version)
Dimensions & Length Specifications
- Sensor Cable Length
- Max. 100 m
Control, Software & User Interface Specifications
- Software Interface
- BCSoft (via optical interface)
- Display Type
- 2-digit 7-segment display for program status and flame signal
Communication & Interfaces
- Fieldbus Interface
- PROFIBUS DP via PFA 700
Control, Logic & System Behavior
- Start-up Attempts
- 1 to 4
- Restart Attempts
- Up to 3 (configurable)
Air & Combustion Air Specifications
- Air Valve Control
- Integrated (PFU..L variant)
Environmental Conditions
- Enclosure Rating
- IP00 (IP20 when installed in module subrack)
Electrical Specifications
- Sensor Voltage
- ~230 V AC
- Mains Voltage
- PFU..N: 110/120 VAC
- PFU..T: 220/240 VAC
Operating Limits, Durability & Lifecycle
- Altitude Limit
- < 2000 m AMSL
Applications & Compatibility
- Applications
- PFU 760: Directly ignited burners; intermittent or continuous operation
- PFU 780: Pilot + main burners, intermittent or continuous operation
Control, Logic & Functional Behavior
- Manual Mode
- Available for commissioning and diagnostics
Dimensions & Weight
- Dimensions
- 133.4 mm H x 40.6 mm W
Standards & Certifications
- Approvals
- SIL 3 (EN 61508), EN 298:2012, FM Approved PFU..T variant only; NFPA 86 Compliant, AGA Approved, UKCA Certified, Eurasian Customs Union
- Models : PFU 760, PFU 780
- Operating Temperature Range : -20 to +60 deg C (-4 to +140 deg F)|No condensation allowed
- Minimum Burner Pause Time : 0 to 250 seconds
- Start-up Safety Time : Adjustable: 3, 5, or 10 seconds
- Flame Proving Period : 0 to 25 s
- Sensor Cable Length : Max. 100 m
- Software Interface : BCSoft (via optical interface)
- Fieldbus Interface : PROFIBUS DP via PFA 700
- Start-up Attempts : 1 to 4
- Air Valve Control : Integrated (PFU..L variant)
- Restart Attempts : Up to 3 (configurable)
- Enclosure Rating : IP00 (IP20 when installed in module subrack)
- Sensor Voltage : ~230 V AC
- Altitude Limit : < 2000 m AMSL
- Mains Voltage : PFU..N: 110/120 VAC|PFU..T: 220/240 VAC
- Flame Control : UV, ionization, or temperature (high-temp version)
- Display Type : 2-digit 7-segment display for program status and flame signal
- Applications : PFU 760: Directly ignited burners; intermittent or continuous operation|PFU 780: Pilot + main burners, intermittent or continuous operation
- Manual Mode : Available for commissioning and diagnostics
- Dimensions : 133.4 mm H x 40.6 mm W
- Approvals : SIL 3 (EN 61508), EN 298:2012, FM Approved PFU..T variant only; NFPA 86 Compliant, AGA Approved, UKCA Certified, Eurasian Customs Union
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