Overview
The D+H SHD 54/450-BSY+ is a synchronised dual chain-drive system designed for wide side-hung windows.
Two drives are installed on each sash and communicate through D+H BSY+ electronics to provide coordinated opening and closing. This arrangement distributes the operating load across the window and helps control large side-hung sashes that are not suited to a single conventional chain drive.
The SHD 54/450-BSY+ can open compatible windows to approximately 65° and is suitable for daily natural ventilation and appropriately configured smoke ventilation systems.
The system may also be combined with a compatible D+H FRA 11-BSY+ locking drive where powered multipoint locking is required.
SHD 54/450-BSY+ at a glance
| Product type | Synchronised dual chain-drive set |
|---|---|
| Model | SHD 54/450-BSY+ (M2) |
| Window type | Wide side-hung windows |
| Drive arrangement | Two synchronised drives per sash |
| Supply voltage | 24 V DC ±15% |
| Stroke | 450 mm |
| Opening angle | Up to approximately 65° on a compatible window |
| Indicative sash size | Up to approximately 1.2 m wide × 2.0 m high, subject to application review |
| Synchronisation | D+H BSY+ microprocessor-controlled synchronisation |
| Programming | Individually programmable using D+H SCS software |
| Applications | Daily natural ventilation and compatible smoke ventilation systems |
| Optional locking | Compatible with FRA 11-BSY+ powered window locking arrangements |
Synchronised dual-drive operation
The SHD 54/450-BSY+ is supplied and used as a synchronised two-drive set.
Both drives operate the same side-hung sash and communicate through D+H BSY+ electronics. The synchronisation system coordinates drive position and movement so the sash opens and closes evenly.
Two drives are required for each sash. The electrical design must therefore account for the combined current consumption of both drives.
The synchronised arrangement provides:
- Coordinated operation across a wide sash.
- Improved distribution of opening and closing loads.
- Controlled movement of large side-hung windows.
- Electronic monitoring of drive position and overload conditions.
- Project-specific programming using D+H SCS software.
Wide side-hung window operation
The SHD system is specifically intended for wide side-hung windows rather than top-hung, bottom-hung or conventional narrow sash applications.
The two drives are normally mounted along the head or horizontal frame section and connect to the sash using the supplied brackets.
As the chains extend, the sash rotates around its vertical hinge axis. Correct mounting geometry is essential to achieve the required opening angle without imposing unsuitable loads on the sash, hinges or frame.
Opening angle and movement
The SHD 54/450-BSY+ provides a nominal 450 mm stroke and can open a compatible side-hung sash to approximately 65°.
D+H identifies an opening time of less than 30 seconds to approximately 65° in the applicable smoke ventilation configuration. Actual opening time and angle depend on:
- Sash width and height.
- Hinge position.
- Drive mounting points.
- Bracket geometry.
- Window resistance.
- Programmed drive speed.
- Control mode.
The final opening angle should be confirmed from the complete window geometry rather than from stroke alone.
Technical data
| Model | SHD 54/450-BSY+ (M2) |
|---|---|
| Supply | 24 V DC ±15% |
| Nominal current | 1 A per drive; allow for two drives per sash |
| Power | 24 VA per drive |
| Push force | 500 N per drive |
| Pull force | 500 N per drive |
| Temporary switch-off reserve | Approximately 20% |
| Closing force | Approximately 250 N |
| Stroke | 450 mm |
| Normal opening speed | Approximately 11.8 mm/second |
| Smoke ventilation opening speed | Approximately 15.2 mm/second |
| Closing speed | Approximately 11.8 mm/second |
| Duty cycle | 30% with a 10-minute cycle time |
| Service life | 20,000 double strokes |
| Ingress protection | IP50 |
| Temperature range | -15°C to +75°C, with -5°C minimum under the referenced VdS condition |
| Fire stability | B300 — 30 minutes at 300°C |
| Housing | Painted aluminium |
| Standard colour | White aluminium, approximately RAL 9006 |
| Dimensions | 500 × 40 × 115 mm per drive |
| Weight | Approximately 2.1 kg per drive |
| Connection | 2.5 m silicone cable |
BSY+ synchronisation
D+H BSY+ electronics provide communication between the two SHD drives installed on the sash.
The synchronisation system supports:
- Coordinated drive travel.
- Position comparison between drives.
- Electronic limit control.
- Overload cut-off.
- Controlled stopping of the drive group if a fault occurs.
- Individual programming using D+H SCS software.
Both drives must be treated as one operating group during installation, programming and commissioning.
Integration with FRA 11-BSY+ locking drives
Large side-hung windows may require powered multipoint locking in addition to the SHD opening drives.
The SHD 54/450-BSY+ can be coordinated with a compatible FRA 11-BSY+ locking drive.
In this arrangement:
- An open command is issued.
- The FRA locking drive releases the multipoint locking hardware.
- The system confirms that the sash is unlocked.
- The two SHD drives open the sash in synchronisation.
- During closing, the SHD drives return the sash fully to the frame.
- The FRA drive does not relock the window until the closed-position sequence has been confirmed.
This prevents the SHD drives from attempting to open a locked sash and prevents the multipoint lock from engaging before the window is fully closed.
Sash size and application review
D+H identifies the SHD 54/450-BSY+ for indicative sash dimensions up to approximately 1.2 m wide × 2.0 m high.
This is an application guide rather than an automatic maximum for every window.
Selection must also account for:
- Sash weight.
- Frame and sash stiffness.
- Hinge capacity.
- Seal resistance.
- Wind loads.
- Internal and external pressure differences.
- Required opening angle.
- Bracket positions.
- Multipoint locking arrangements.
- Accessible closing-edge risks.
EBSA reviews the complete window arrangement before confirming the SHD drive system.
Natural ventilation
The SHD 54/450-BSY+ may be used for daily natural ventilation where a large side-hung sash is required to open automatically.
The drive system can be integrated with:
- D+H natural ventilation control panels.
- Room temperature sensors.
- Carbon dioxide or indoor air quality controls.
- Manual ventilation switches.
- Weather stations.
- Rain and wind sensors.
- Building management system interfaces.
Weather-controlled closing should be coordinated where the window is exposed to rain or strong wind.
Smoke ventilation applications
The SHD 54/450-BSY+ is available for compatible smoke ventilation applications.
The product data references EN 12101-2 certification for applicable D+H Euro-SHEV configurations. Certification and project suitability depend on the complete tested window, drive, bracket and control arrangement rather than the actuator alone.
Smoke ventilation coordination may include:
- The tested window system.
- Required aerodynamic opening area.
- Required opening angle.
- D+H smoke control panel.
- Fire alarm interface.
- Battery-backed power supply.
- Field wiring.
- Optional powered locking.
- Commissioning and cause-and-effect testing.
Electronic limit and overload protection
The SHD drives include electronic limit control and overload cut-off.
These functions assist with controlling the drive at the end of travel and responding to excessive operating resistance.
They do not remove the need to ensure that:
- The sash moves freely.
- The hinges are correctly aligned.
- The window is not distorted.
- The seals do not impose excessive resistance.
- The brackets and fixings are secure.
- The two drives are correctly synchronised.
Seal-relief function
The drive includes a seal-relief function following closing.
This function reduces sustained load on the window seals after the sash has reached its closed position while maintaining the required closed condition.
Final compression and locking performance depend on the window hardware, seals and any associated FRA multipoint locking drive.
Mounting requirements
The SHD drives are intended for internal installation.
The supplied mounting template and bracket set assist with positioning the drives and sash connections. The installation instructions show alternative bracket orientations depending on the sash and frame configuration.
Before installation, confirm:
- Suitable structural fixing points.
- Correct hinge-axis location.
- Required clearance around the drive body.
- Space for chain and bracket movement.
- Correct separation and alignment of the two drives.
- Suitable cable routes.
- Access for programming and maintenance.
System programming
The SHD 54/450-BSY+ can be programmed using D+H SCS software.
Programming may include:
- Drive-group configuration.
- Synchronisation parameters.
- Opening speed.
- Smoke ventilation speed.
- Opening position.
- Closing behaviour.
- Locking direction and interaction with an FRA drive.
- Position or VP signal activation where required.
- Overload behaviour.
- Seal-relief settings.
EBSA provides D+H programming and commissioning support for compatible SHD systems.
Applications
The SHD 54/450-BSY+ may be used for compatible:
- Wide side-hung windows.
- Large natural ventilation windows.
- Smoke ventilation openings.
- Windows requiring dual-drive synchronisation.
- Windows opening to a large angle.
- Side-hung windows with optional powered multipoint locking.
- Commercial façade automation systems.
- High-level or remotely operated side-hung windows.
Information required for product selection
Provide the following information when requesting SHD drive support:
- Window elevations and section drawings.
- Sash width and height.
- Approximate sash weight.
- Hinge type and hinge-axis location.
- Required opening angle.
- Window-frame and sash-profile details.
- Seal and hardware information.
- Multipoint locking arrangement.
- Required natural ventilation or smoke ventilation function.
- Control-panel model.
- Weather-control requirements.
- Available mounting and maintenance access.
Installation and commissioning
SHD installation should be coordinated with the window manufacturer, façade contractor, electrical contractor and controls provider.
Commissioning should include:
- Verification of free sash movement.
- Confirmation of hinge and bracket alignment.
- Mechanical inspection of both drive connections.
- Electrical connection of both drives.
- BSY+ group configuration.
- Drive-address and programming checks.
- Synchronised opening and closing tests.
- Verification of the required opening angle.
- Overload and fault-response testing.
- Testing of any FRA locking-drive sequence.
- Natural ventilation and smoke control interface testing.
- Recording of final programming and drive references.
Product downloads
| Model | Product data | Instructions |
|---|---|---|
| SHD 54/450-BSY+ (M2) |
Download SHD 54/450-BSY+ data sheet |
Download SHD 54/450-BSY+ instructions |
Frequently asked questions
Why are two SHD drives required on each window?
The SHD 54/450-BSY+ is designed as a synchronised dual-drive system.
Two drives distribute the load across the wide side-hung sash and operate together through D+H BSY+ communication.
What type of window is the SHD designed for?
It is designed for wide side-hung windows that rotate around a vertical hinge axis.
It is not a general replacement for chain drives used on top-hung or bottom-hung windows.
How far can the SHD open the window?
The SHD system can open a compatible side-hung window to approximately 65°, subject to the sash and mounting geometry.
Can the SHD be used for daily ventilation?
Yes. It may be integrated with compatible D+H natural ventilation controls, sensors, switches and weather automation.
Can the SHD be used for smoke ventilation?
Yes, within an applicable tested and designed smoke ventilation configuration.
Certification and suitability depend on the complete window, drives, brackets, control panel and project requirements.
Can the SHD operate a multipoint-locked window?
Yes. A compatible FRA 11-BSY+ locking drive may be added to operate the window’s multipoint locking hardware.
The lock releases before the SHD drives open and does not re-engage until the sash is fully closed.
Can one SHD drive be used instead of two?
The SHD 54/450-BSY+ product shown on this page is a two-drive set, and two drives are required for each sash.
Can EBSA programme the SHD drives?
Yes. EBSA can configure the BSY+ drive group, operating parameters, opening behaviour and compatible FRA locking sequence using D+H SCS software.
What sash size can the SHD operate?
D+H provides an indicative sash size of up to approximately 1.2 m wide × 2.0 m high for the SHD 54/450-BSY+.
Final suitability also depends on sash weight, hardware, wind load, seals, geometry and required opening angle.
Can EBSA replace an existing SHD drive set?
Yes. EBSA can review the installed drive references, BSY+ configuration, brackets, locking arrangement, controller and window condition before confirming the replacement and recommissioning requirements.
Related drive pages
- Specialty Drives: window locking, door, side-hung and skylight drives.
- FRA and VLD Window Locking Drives: powered operation of multipoint window locking systems.
- Chain Drives: compact opening drives for a broad range of automated windows.
- Window Automation: complete D+H natural ventilation and façade automation systems.
Discuss a wide side-hung window application
Provide EBSA with the sash dimensions, weight, hinge arrangement, opening angle, profile drawings, locking hardware and control requirements. We can review the complete application and coordinate the SHD drive set, BSY+ programming, optional locking and control system.
