Compatibility boundary: accessory ratings are not universal. Electrical, mechanical, ingress-protection, temperature, fire and control characteristics apply only to the exact selected component and documented interface.
Accessory groups
Mechanical interfaces
Flexible connectors, transitions, flanges, guards, screens and service-access components.
Vibration and acoustics
Rubber or spring isolators, inertia/base coordination, silencers and connection details.
Electrical and control
VFDs, switches, sensors, alarm contacts, BMS interfaces and project control logic.
Accessory compatibility matrix
| Code | Component | Available basis | Mandatory matching data |
|---|---|---|---|
| RF-AC-VFD | Variable-frequency drive | 0.37–132 kW project-matched | Motor current, voltage, overload, EMC, cable length, enclosure and control sequence |
| RF-AC-ISO | Vibration isolators | Rubber or spring | Operating weight, centre of gravity, deflection, disturbing frequency and support structure |
| RF-AC-FLEX | Flexible connections | Round or rectangular | Connection size, temperature, pressure, movement, fabric and grounding continuity |
| RF-AC-GRD | Guards and screens | Inlet, outlet, belt or coupling | Opening, access, material, corrosion protection and safe clearance |
| RF-AC-SIL | Silencers and transitions | Circular or rectangular | Airflow, velocity, insertion loss target, pressure loss, length and fire/material requirement |
| RF-AC-SEN | Sensors and control interfaces | Pressure, temperature, CO/CO₂ or status | Range, accuracy, output signal, power, BMS protocol, alarm and fail-safe logic |
Required coordination data
| Required field | Project definition |
|---|---|
| Selected fan | Exact model, duty point, speed, absorbed power, weight and arrangement |
| Electrical supply | Voltage, phase, frequency, fault level, earthing and local regulations |
| Control sequence | Start/stop, setpoint, modulation, interlocks, alarm, override and fail-safe |
| Environment | Indoor/outdoor, temperature, humidity, dust, corrosion and hazardous classification |
| Mechanical connection | Dimensions, flange, movement, access, support and allowable transmitted load |
| Acoustic requirement | Measurement location, target spectrum/level and allowable pressure loss |
| Cable and EMC | Motor cable length, shielding, filters/reactors and BMS segregation |
| Evidence and scope | Supplier datasheet, wiring, certificates, responsibility boundary and commissioning |
Interface and release responsibilities
| Interface | Must be verified | Released document |
|---|---|---|
| Fan ↔ VFD | Motor current, frequency range, insulation, minimum speed and resonance exclusion | VFD schedule, parameters and wiring |
| Fan ↔ isolator/base | Operating weight, centre of gravity, disturbing frequency and structure | Isolator selection and mounting layout |
| Fan ↔ flexible connector | Pressure, temperature, movement, material and grounding | Connection detail and material specification |
| Fan ↔ silencer/transition | Velocity profile, system effect, pressure loss and access | GA/interface drawing and acoustic basis |
| Controls ↔ BMS | Signals, protocol, addressing, alarms and override logic | I/O list, sequence and points schedule |
| Safety interface | Guards, isolator switch, emergency stop and access zones | Safety/access note and responsibility matrix |
Coordination workflow
- Identify the exact fan, duty point and installation arrangement.
- Define electrical, mechanical, acoustic and control interfaces.
- Select components from their documented ratings and compatibility limits.
- Issue coordinated schedules, wiring and interface drawings.
- Commission and record settings, alarms, rotation and protective functions.