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134U7912 Danfoss VLT HVAC Drive 110 kW/150HP 380-480VAC IP20
Danfoss 134U7912 VLT HVAC Drive FC 102, a 110 kW three phase variable speed drive designed for HVAC pumps, fans, compressors and building automation systems.
£5,696.90
Danfoss 134U7912 at a glance
The Danfoss 134U7912 is a 110 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 D3H, IP20 / chassis unit, built for mounting inside a control panel or enclosure.
This configuration has RFI class A2 (C3), safe Stop, no brake chopper, a graphical LCP 102 control panel, and a EtherNet/IP MCA 121 fieldbus card. The full type code is decoded alongside the FAQs.
Sizing and installation
- Enclosure: IP20 / chassis — built for mounting inside a control panel or enclosure.
- EMC: RFI class A2 (C3). 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 110 kW rating, other enclosures
This driveIP20Danfoss 134U7912IP20 / chassis
EnclosureIP00Danfoss 131F8210IP00 / chassisView drive →
EnclosureIP21Danfoss 134F0377IP21 / UL Type 1View drive →
EnclosureIP54Danfoss 131G9428IP54 / UL Type 12View 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 | 110 kW | |
|---|---|---|
| Voltage | 480 V | |
| Phase | Three Phase | |
| IP Rating | IP20 | |
| EMC Filter | Industrial | |
| Series | VLT® HVAC Drive FC 102 | |
| Alternative model code | FC-102N110T4E20H2TGC7XXSXXXXANBKCXXXXDX | |
| Product type | Variable speed drive / frequency converter | |
| Rated output power | 110 kW | |
| Horsepower rating | 150 HP | |
| Input voltage | 380–480 V AC | |
| Input phases | Three-phase | |
| Frequency | 50 / 60 Hz | |
| Protection rating | IP20 / chassis | |
| RFI filter | Class A2 (C3) | |
| Safety function | Safe Stop | |
| I/O module | MCB-101 General Purpose I/O | |
| Local control panel | Graphical LCP | |
| PCB coating | Coated PCB | |
| Mains option | Fuse | |
| Frame size | D3H | |
| Mounting type | Cabinet / panel mounting |
Frequently asked questions
Which communication protocols does it support?
This unit is fitted with a EtherNet/IP MCA 121 card, in addition to the built-in RS-485 protocols: Danfoss FC, Modbus RTU, BACnet MS/TP, Metasys N2 and FLN Apogee.
Does this drive need to go in an enclosure?
Yes. IP20 / chassis drives are designed to be mounted inside a control panel or enclosure. For wall mounting without a panel, choose an IP55 or IP66 version.
Type code decoded
FC-102N110T4E20H2TGC7XXSXXXXANBKCXXXXDX
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 | 110 kW | N110 |
| Mains voltage Position 11–12 | 3 × 380–480 V AC | T4 |
| Enclosure Position 13–15 | IP20 / chassis | E20 |
| RFI filter Position 16–17 | RFI class A2 (C3) | H2 |
| Brake / Safe Stop Position 18 | Safe Stop, no brake chopper | T |
| Local control panel Position 19 | Graphical LCP 102 | G |
| PCB coating Position 20 | Conformal-coated PCBs | C |
| Mains option Position 21 | Fuses | 7 |
| 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 | EtherNet/IP MCA 121 | AN |
| B option (I/O) Position 31–32 | MCB 101 general-purpose I/O | BK |
| 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 |
