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135U8572 Danfoss VLT HVAC Drive 315 kW/450HP 380-480VAC IP20
Danfoss 135U8572 VLT HVAC Drive FC-102, a 315 kW three-phase AC variable frequency drive designed for high-power HVAC motor control, building automation and energy-efficient pump, fan and compressor operation.
£19,180.15
Danfoss 135U8572 at a glance
The Danfoss 135U8572 is a 315 kW VLT HVAC Drive FC 102 for 3 × 380–480 V AC supplies, made for the fans, pumps and compressors in building services. It is a frame D4H, Refer to the Danfoss FC 102 type-code guide unit, built for mounting inside a control panel or enclosure.
This configuration has RFI class A1 (C2), brake chopper + Safe Stop, and a graphical LCP 102 control panel. The full type code is decoded alongside the FAQs.
Sizing and installation
- Enclosure: Refer to the Danfoss FC 102 type-code guide — built for mounting inside a control panel or enclosure.
- EMC: RFI class A1 (C2). Check the permitted screened motor cable length in the Danfoss FC 102 Design Guide.
FC 102 features for HVAC
- Built-in RS-485 protocols: Danfoss FC, Modbus RTU, BACnet MS/TP, Metasys N2 and FLN Apogee — connects to most building management systems without an option card.
- Fire Mode keeps the drive running during an emergency, for example to keep smoke-extract fans turning.
- Automatic Energy Optimisation (AEO) cuts motor losses at part load — Danfoss quotes a further 5–15% saving.
- Pump and fan functions: sleep mode, dry-pump, end-of-curve and broken-belt detection, plus a built-in cascade controller for pump sets.
- Built-in DC coils limit mains harmonics (EN 61000-3-12).
- Smart Logic Controller for simple sequencing without a PLC.
Where the energy saving comes from
Centrifugal fans and pumps follow the affinity laws: absorbed power falls with the cube of speed. Running at 80% speed needs roughly half the power of full speed (0.8³ ≈ 0.51, before motor and drive losses) — which is why speed control pays back faster on fans and pumps than almost any other load.
Other sizes and enclosures
Same 315 kW rating, other enclosures
This driveRefer to the Danfoss FC 102 type-code guideDanfoss 135U8572Refer to the Danfoss FC 102 type-code guide
EnclosureIP00Danfoss 131B6956IP00 / chassisView drive →
EnclosureIP20Danfoss 134F9231IP20 / chassisView drive →
EnclosureIP54Danfoss 134F8905IP54 / UL Type 12 with mains shieldView drive →
Typical applications
✓ Supply and extract fans in air-handling units
✓ Chilled- and hot-water circulation pumps
✓ Cooling towers and condenser fans
✓ Booster sets and multi-pump stations
✓ Ventilation and smoke-extract systems
Technical Specifications
Tick the specs you need, then view products that match.
| Power | 315 kW | |
|---|---|---|
| Voltage | 480 V | |
| Phase | Three Phase | |
| IP Rating | IP20 | |
| EMC Filter | Commercial | |
| Series | VLT® HVAC Drive FC-102 | |
| Part number | 135U8572 | |
| Product type | AC variable frequency drive | |
| Rated output power | 315 kW | |
| Horsepower rating | 450 HP | |
| Input voltage | 380-480 V AC | |
| Input phases | 3-phase | |
| Frequency | 50 / 60 Hz | |
| Protection rating | IP20 / chassis | |
| Frame size | D4H | |
| RFI filter | Class A1 / C2 | |
| Brake option | Brake chopper included | |
| Safety function | Safe Stop | |
| Control panel | Graphical Local Control Panel | |
| PCB coating | Coated | |
| Mains option | No mains option | |
| Dimensions (H × W × D) | approx. 1122 × 350 × 375 mm | |
| Weight | approx. 125 kg | |
| EAN | 5710108348434 |
Frequently asked questions
Which communication protocols are built in?
Danfoss FC, Modbus RTU, BACnet MS/TP, Metasys N2 and FLN Apogee over the built-in RS-485 port. This unit has no fieldbus option card fitted, so PROFIBUS, PROFINET, EtherNet/IP or BACnet/IP would need an MCA option card.
Can this drive be wall mounted without a panel?
Yes. The Refer to the Danfoss FC 102 type-code guide enclosure is designed for direct mounting.
Type code decoded
FC-102N315T4C20H4UGCXXXSXXXXAXBXCXXXXDX
G fitted / defines this unit X not fitted / standard
| Product series Position 1–6 | VLT HVAC Drive FC 102 | FC-102 |
|---|---|---|
| Power size Position 7–10 | 315 kW | N315 |
| Mains voltage Position 11–12 | 3 × 380–480 V AC | T4 |
| Enclosure Position 13–15 | Refer to the Danfoss FC 102 type-code guide | C20 |
| RFI filter Position 16–17 | RFI class A1 (C2) | H4 |
| Brake / Safe Stop Position 18 | Brake chopper + Safe Stop | U |
| Local control panel Position 19 | Graphical LCP 102 | G |
| PCB coating Position 20 | Conformal-coated PCBs | C |
| Mains option Position 21 | No mains option | X |
| Adaptation A Position 22 | Standard cable entries | X |
| Adaptation B Position 23 | Standard | X |
| Software release Position 24–27 | Latest standard release | SXXX |
| Software language Position 28 | Standard language package | X |
| A option (fieldbus) Position 29–30 | No fieldbus option | AX |
| B option (I/O) Position 31–32 | No B option | BX |
| C0 option Position 33–34 | No C0 option | CX |
| C1 option Position 35 | No C1 option | X |
| C option software Position 36–37 | None | XX |
| D option Position 38–39 | No D option | DX |
