The Frenic-Eco F1 is a range of economical inverters for standard fan & pump motors with variable torque load.
While the Frenic-Eco F1 range has been superceded by the Frenic-HVAC and the upcoming Frenic-Aqua; the range is still available.
Specification and prices below:

| Control System | Line Sine-Wave Modulation PWM - VF Constant Torque or VF Reduced Torque |
| Output Frequency Range | 0.5 to 360Hz |
| Frequency Resolution | Digital 0.1Hz Analogue Setting Max. Frequency Divided by 1000 |
| Output Current | More than 100% (When Torque Boost has been set) |
| Braking | 20-100% (capacitive feedback type) |
| DC Injection Braking | Programmable Power, Time and Frequency Settings |
| Speed Reference | Digital, 0-10V (10K Ohm impedance), 4-20mA (250 Ohm impedance) |
| Multi-stage Speed | 16 Programmable Pre-sets |
| Output Voltage | Auto Voltage Regulator (AVR) |
| Accel/Decel | 0.1-3000s linear or S-Curve - 2 Selectable |
| Input Terminals | 5 Programmable from 14 Selections |
| Output Terminals | 2 Programmable from 5 Selections. Open Collector 27Vdc 50mA |
| Alarm Relay | Change Over Contact |
| Meter Output | Voltage or Frequency Output of Speed or Load indication only. |
| Protection | 15 Function inc. Earth Fault |
| Trip History | Last 3 trips, total trip log |
| PID Control | Programmable PID Function - 4-20mA / 0-10Vdc Feedback |
| Enclosure | IP20 |
| International Standards | UL, C-UL (CSA), CE and C-Tick - Complies with EMC & LV Directives |
| Model Number |
Motor Power |
Rated Current |
Unit Price |
Dimensions (mm) | |||
| Height | Width | Depth | |||||
| 400V 3ph (120% of rated current for 1min) | |||||||
| FRN0.75F1S-4E | 0.75kW | 2.5A | £525.00 | 260 | 150 | 163 | |
| FRN1.5F1S-4E | 1.5kW | 3.7A | £562.50 | ||||
| FRN2.2F1S-4E | 2.2kW | 5.5A | £625.00 | ||||
| FRN4.0F1S-4E | 4.0kW | 9.0A | £712.50 | ||||
| FRN5.5F1S-4E | 5.5kW | 12.5A | £825.00 | ||||
| FRN7.5F1S-4E | 7.5kW | 16.5A | £950.00 | 220 | 215 | ||
| FRN11F1S-4E | 11kW | 23A | £1,137.50 | ||||
| FRN15F1S-4E | 15kW | 30A | £1,350.00 | ||||
| FRN18.5F1S-4E | 18.5kW | 37A | £1,750.00 | 400 | 250 | ||
| FRN22F1S-4E | 22kW | 44A | £2,187.50 | ||||
| FRN30F1S-4E | 30kW | 59A | £2,487.50 | ||||
| FRN37F1S-4E | 37kW | 72A | £3,025.00 | 550 | 255 | 320 | |
| FRN45F1S-4E | 45kW | 85A | £3,325.00 | ||||
| FRN55F1S-4E | 55kW | 105A | £4,500.00 | 355 | |||
| FRN75F1S-4E | 75kW | 139A | £POA | 615 | 270 | ||
| FRN90F1S-4E | 90kW | 168A | £POA | 740 | 300 | ||
| FRN110F1S-4E | 110kW | 203A | £POA | ||||
| FRN132F1S-4E | 132kW | 240A | £POA | 530 | 315 | ||
| FRN160F1S-4E | 160kW | 290A | £POA | 360 | |||
| FRN200F1S-4E | 200kW | 360A | £POA | 1000 | |||
| FRN220F1S-4E | 220kW | 415A | £POA | ||||
| FRN280F1S-4E | 280kW | 520A | £POA | 680 | 380 | ||
| FRN315F1S-4E | 315kW | 585A | £POA | ||||
| FRN355F1S-4E | 355kW | 650A | £POA | 1400 | 440 | ||
| FRN400F1S-4E | 400kW | 740A | £POA | ||||
| FRN450F1S-4E | 450kW | 840A | £POA | ||||
| FRN500F1S-4E | 500kW | 960A | £POA | ||||
| FRN560F1S-4E | 560kW | 1,040A | £POA | ||||