Description
FAAC C851 High Speed Sliding Gate Opener – 109903
The FAAC C851 is a specialised high-speed industrial sliding gate operator designed for large and frequently operated sliding gates weighing up to 1,800kg.
Unlike conventional sliding gate operators, the C851 incorporates a powerful three-phase motor driven from an integrated frequency inverter, allowing the operator to run from a standard 220–240V single-phase supply while providing electronically adjustable gate speeds up to an impressive 40 metres per minute.
With 3,000N maximum expressed force, continuous-duty operation, an oil-lubricated gearbox and integrated E850S electronic control, the C851 is designed for demanding commercial and industrial entrances where both high operating speed and high traffic capacity are required.
FAAC Part Number: 109903
⚡ High-Speed Operation Up to 40m/min
The standout feature of the FAAC C851 is its exceptionally high operating speed.
FAAC specifies an electronically adjustable gate speed of:
- 20–40 metres per minute
- Up to approximately 0.67 metres per second
Opening and closing speeds are managed electronically through the integrated frequency inverter.
This makes the C851 particularly suitable for applications where reducing the amount of time an entrance remains open is important.
Typical applications include:
- Industrial facilities
- Warehouses
- Distribution centres
- Commercial car parks
- Logistics facilities
- Secure compounds
- High-traffic vehicle entrances
- Large commercial properties
🚪 Sliding Gates Up to 1,800kg
The FAAC C851 is designed for substantial industrial sliding gates.
FAAC specifies:
- Maximum gate weight: 1,800kg
- Maximum gate width: 20m
- Maximum speed: 40m/min
- Maximum expressed force: 3,000N
The combination of high gate capacity and exceptionally high operating speed makes the C851 significantly different from a conventional residential or commercial sliding gate motor.
💪 3,000N Maximum Force
The FAAC C851 provides up to 3,000N of maximum expressed force.
FAAC specifies:
- Maximum torque: 168Nm
- Maximum expressed force: 3,000N
This substantial drive force allows the operator to control large sliding gate leaves while maintaining the high operating speeds for which the C851 is designed.
♾️ 100% Duty Cycle
The FAAC C851 is designed specifically for high-frequency operation.
FAAC specifies a use frequency of:
- 100% at 25°C
This makes the C851 particularly suitable for entrances experiencing intensive daily traffic where conventional percentage-duty sliding gate operators may not be appropriate.
At elevated ambient temperatures, the allowable continuous operating period may be reduced according to FAAC specifications.
⚙️ Powerful Three-Phase Motor
The FAAC C851 uses a powerful four-pole three-phase electric motor.
The integrated frequency inverter allows this three-phase motor to operate as part of a system supplied from a standard 220–240V AC single-phase electrical supply.
FAAC specifies:
- Incoming power supply: 220–240V AC, 50/60Hz
- Motor: 1.1kW three-phase, four-pole
- Maximum absorbed power: 1,800W
This combination provides the power and precise speed control required for high-speed industrial gate automation.
🧠 Integrated E850S Control Board
The FAAC C851 incorporates the E850S electronic control board directly within the operator.
The E850S is specifically designed to control the C851 and incorporates the frequency inverter required to operate and electronically control the three-phase motor.
The integrated control system provides:
- Electronic speed adjustment
- Independent opening and closing speed management
- Acceleration management
- Deceleration management
- Programmable operating logic
- Partial opening
- Automatic closing functions
- Safety device management
- Programmable inputs and outputs
- Onboard display
- Push-button programming
- System diagnostics
The control equipment is housed within the C851 operator for convenient installation, programming and servicing.
🔄 Integrated Frequency Inverter
A major difference between the C851 and conventional sliding gate operators is the integrated frequency inverter within the E850S control system.
The inverter electronically controls the three-phase motor and allows the gate speed to be programmed according to the requirements of the installation.
Opening and closing running speeds can be configured independently.
This allows the installer to balance:
- Opening speed
- Closing speed
- Gate weight
- Traffic requirements
- Safety requirements
- Acceleration
- Deceleration
The result is substantially greater control over gate movement than a conventional fixed-speed sliding gate operator.
🛢️ Oil-Lubricated Gearbox
The C851 uses a worm-screw reduction gearbox with oil lubrication.
The oil-lubricated transmission provides continuous lubrication of the internal gearbox components during operation.
Benefits include:
- Reduced internal friction
- Continuous lubrication
- Smooth operation
- Improved heat management
- Reduced mechanical wear
- Long service life
- Suitability for intensive operation
This heavy-duty transmission is designed specifically for demanding commercial and industrial applications.
🛑 Precision Deceleration System
High-speed gates require precise control as they approach their final stopping positions.
The FAAC C851 incorporates dedicated mechanical deceleration limit switches which allow the start of the slowdown zones to be accurately adjusted.
The operator then uses separate magnetic limit switches mounted to the gate rack to establish the final opening and closing positions.
This combination provides:
- Precise deceleration points
- Controlled approach to the final position
- Accurate open position
- Accurate closed position
- Reduced mechanical impact
🧲 Magnetic Final Limit Switches
The fully open and fully closed gate positions are established using magnetic limit switches.
Magnetic limit stops are mounted to the gate rack and detected by the operator as the gate reaches the end of its travel.
The C851 therefore combines:
- Integrated mechanical deceleration limit switches
- External magnetic final-position limit switches
This arrangement is specifically designed to provide the precise movement control required by a high-speed sliding gate.
🔒 Integrated Electric Brake
The FAAC C851 incorporates an electric brake within the geared motor assembly.
The brake ensures that the operator remains irreversible when stationary, preventing the gate from being freely pushed open when the motor is stopped.
This is particularly important on a high-speed industrial operator where precise control of the gate is required both during operation and when stationary.
🔓 Key-Protected Manual Release
The C851 incorporates a key-protected manual release system.
The release can be operated externally without removing the main operator cover.
When released, the drive system can be disengaged to allow the sliding gate to be moved manually during:
- Power failures
- System faults
- Servicing
- Maintenance
- Emergency situations
The manual release should remain readily accessible after installation.
⚙️ Z28 Module 4 Drive Pinion
The FAAC C851 uses:
- Z28 drive pinion
- Module 4 rack profile
The operator requires appropriately rated Module 4 gate rack.
Due to the high speed, force and industrial nature of the C851, suitable steel rack should be used for the installation.
Correct rack alignment, pinion clearance and gate geometry are essential for safe and reliable operation.
🏗️ Industrial Construction
The FAAC C851 is substantially constructed for industrial applications.
The operator features:
- Galvanised steel operator base
- Five fixing points
- Slotted mounting holes
- Height adjustment provisions
- Heavy-duty steel external cover
- Zinc-primer corrosion protection
- Powder-coated finish
- Oil-lubricated transmission
- Integrated belt protection
The complete operator weighs approximately 40kg.
🌦️ Designed for Outdoor Installation
The FAAC C851 is designed for external industrial sliding gate installations.
FAAC specifies:
- Protection rating: IP54
- Operating temperature: -20°C to +55°C
- Thermal protection: 75°C
At 25°C ambient temperature, FAAC specifies 100% use frequency.
At higher ambient temperatures, the permissible continuous operating period and duty cycle may be reduced.
📐 Foundation Plate
The FAAC C851 requires its dedicated foundation plate for installation.
FAAC C851 Foundation Plate:
- Part Number: 737850
The foundation plate is a separate component and is not included with the individual 109903 operator unless specifically stated otherwise.
Correct foundation preparation is particularly important due to the high speed, force and weight of the C851.
📦 What’s Included
FAAC part number 109903 includes:
- 1 × FAAC C851 High-Speed Sliding Gate Gearmotor
- 1 × Z28 Module 4 Drive Pinion
- 1 × Integrated FAAC E850S Electronic Control Board
- 1 × Integrated Frequency Inverter
- Integrated Mechanical Deceleration Limit Switches
- Magnetic Opening & Closing Limit Switch System
- Key-Protected Manual Release System
The dedicated foundation plate, gate rack, radio receiver, transmitters, photocells, flashing light, safety edges and other installation accessories are separate unless specifically stated as included.
Key Features
- Genuine FAAC high-speed sliding gate operator
- FAAC Part Number: 109903
- Model: C851
- Designed for industrial applications
- Maximum gate weight of 1,800kg
- Maximum gate width of 20m
- Adjustable gate speed from 20–40m/min
- Maximum speed of 40m/min
- Maximum expressed force of 3,000N
- Maximum torque of 168Nm
- 100% duty cycle at 25°C
- 1.1kW three-phase motor
- 220–240V AC incoming supply
- Integrated E850S electronic control board
- Integrated frequency inverter
- Independently programmable opening and closing speeds
- Oil-lubricated worm-screw gearbox
- Integrated electric brake
- Mechanical deceleration limit switches
- Magnetic final limit switches
- Key-protected manual release
- Z28 Module 4 drive pinion
- Heavy-duty industrial construction
- IP54 protection
Specifications
- Manufacturer: FAAC
- Brand: FAAC
- Model: C851
- Part Number: 109903
- Product Type: High-Speed Industrial Sliding Gate Operator
- Application: Commercial / Industrial / High Traffic
- Incoming Power Supply: 220–240V AC, 50/60Hz
- Electric Motor: 1.1kW Three-Phase, Four-Pole
- Gearmotor Type: Worm Screw with Oil Lubrication
- Maximum Power: 1,800W
- Maximum Torque: 168Nm
- Maximum Expressed Force: 3,000N
- Maximum Gate Weight: 1,800kg
- Maximum Gate Width: 20m
- Gate Speed: 20–40m/min Adjustable
- Speed Adjustment: Electronic via Control Board
- Use Frequency: 100% at 25°C
- Control Board: FAAC E850S
- Frequency Inverter: Integrated
- Deceleration Limit Switches: Integrated Mechanical
- Final Limit Switches: Magnetic
- Drive Pinion: Z28 Module 4
- Manual Release: Key Protected
- Electric Brake: Integrated
- Thermal Protection: 75°C
- Operating Temperature: -20°C to +55°C
- Protection Rating: IP54
- Operator Weight: Approx. 40kg
- Dimensions: Approx. 510 × 295 × 467mm
- Foundation Plate: 737850 – Separate
Compatibility
Suitable for compatible commercial and industrial sliding gates weighing up to 1,800kg.
Compatible with appropriate:
- Module 4 steel gate rack
- FAAC C851 Foundation Plate – 737850
- Compatible FAAC radio receivers
- Compatible FAAC transmitters
- FAAC photocells
- FAAC flashing lights
- Safety edges
- Wired access control systems
- Commercial and industrial access control equipment
Due to the high operating speed of the C851, appropriate safety devices must be incorporated into the complete gate system.
🔄 FAAC 844 C vs FAAC C851
FAAC 844 C Z16 – 109925:
- Maximum gate weight: 1,800kg
- Maximum speed: 9.6m/min
- Maximum force: 1,300N
- Continuous-duty operation
- E781S LC control board
- Heavy-duty commercial and industrial applications
FAAC C851 – 109903:
- Maximum gate weight: 1,800kg
- Maximum speed: 40m/min
- Adjustable speed: 20–40m/min
- Maximum force: 3,000N
- 100% duty cycle at 25°C
- E850S control board
- Integrated frequency inverter
- 1.1kW three-phase motor
- Designed specifically for high-speed industrial applications
- This product
While both operators can automate gates weighing up to 1,800kg, the C851 is a specialised high-speed operator capable of moving the gate at more than four times the maximum speed of the 844 C.
⚠️ Please Note
This listing is for FAAC part number 109903, the FAAC C851 high-speed sliding gate operator.
The C851 is an industrial high-speed gate operator capable of gate speeds up to 40m/min and should only be used on appropriately designed sliding gate systems.
FAAC specifies a maximum gate weight of 1,800kg and maximum gate width of 20m.
For cantilever sliding gates, the allowable maximum gate weight is reduced. Gate design and operator selection should therefore be assessed specifically for the individual installation.
The C851 requires appropriate safety devices due to its high operating speed and substantial drive force.
The dedicated FAAC C851 foundation plate 737850, gate rack, radio receiver, transmitters, photocells, flashing light, safety edges and other installation accessories are separate unless specifically stated as included.
The maximum 1,800kg gate weight is a manufacturer limit and does not automatically mean every gate below 1,800kg is suitable. Gate construction, rolling resistance, track condition, wheels, alignment, wind loading, gate length and operating requirements must also be considered.
If you are unsure whether the FAAC C851 109903 is suitable for your sliding gate, contact our Technical Support team on 1300 733 066.
