Autonics SPR3-470NFF Thyristor Power Controller
Autonics SPR3-470NFF Thyristor Power Controller provides 70A rated load current with 440VAC load voltage and 3-phase control capability. It features a 3-digit LED display, supports digital inputs for RUN/STOP, AUTO/MANU and RESET, and uses forced air cooling. Output ranges include 0–98% phase control and up to 100% cycle and ON/OFF control, operating from a 100–240VAC power supply. The unit is part of the Autonics portfolio and listed under Autonics Thyristor Power Controllers within the SPR3 Series.
| Brand | Autonics |
| Product Type | Power Controller |
| Model Number | SPR3-470NFF |
Autonics SPR3-470NFF Thyristor Power Controller – Technical Specifications
| Specification | Value |
|---|---|
| Control phase | 3-phase |
| Rated load voltage | 440VAC~ |
| Rated load current | 70A |
| Display method | 3-digit 7-segment LED |
| Control input | ᆞAuto control: DC4-20mA, 1-5VDC @(=), ON/OFF contact (no-voltage input), pulse voltage (5-12VDC @(=)) ᆞManual control: outside adjuster (10kΩ), inside adjuster (output limit) |
| Digital inputs | RUN/STOP switching, AUTO/MANU switching, RESET |
| Output_Alarm | 250VAC~ 3A, 30VDC @(=) 3A, 1c resistive load |
| Cooling method | Forced air cooling (with the cooling fan) |
| Control method | ᆞPhase control: normal control mode, constant current/constant voltage/constant power feedback control modeᆞCycle control: fixed cycle control modeᆞON/OFF control |
| Applied load | ᆞPhase control, ON/OFF control: resistance load, inductive loadᆞCycle control: resistance load |
| Output range | Phase control: 0 to 98%, Cycle control: 0 to 100%, ON/OFF control: 0 to 100% |
| Power supply | 100-240VAC~ 50/60Hz |
| Min. load current | 1A |
| Power consumption | Max. 22VA |
| Insulation resistance | Over 200MΩ (at 500VDC megger) |
| Dielectric strength | 2,000VAC~ 50/60Hz for 1 min (between input terminals and power terminals) |
| Output leakage current | Max. 10mArms |
| Noise immunity | ±2kV the square wave noise (pulse width: 1㎲) by the noise simulator |
| Memory Protection | ≈ 10 years (non-volatile semiconductor memory type) |
| Vibration | 0.75 mm amplitude at frequency of 5 to 55 Hzin each X, Y, Z direction for 2 hours |
| Vibration_Malfunction | 0.5mm amplitude at frequency of 5 to 55Hz in each X, Y, Z direction for 10 min |
| Environment_Ambient temperature | -10 to 55℃, storage: -20 to 80℃ |
| Environment_Ambient humidity | 35 to 85% RH, storage: 35 to 85% RH |
| Allowable voltage range | 90 to 110% of rated voltage |
| Indicator | ᆞOperation indicator/Manual control indicator: green LEDᆞAlarm indicator/output indicator/unit (V, A) indicator: red LED |
| Output accuracy | ᆞNormal control: within ±10% F.S. of rated load voltageᆞConstant current feedback control: within ±3% F.S. of rated load currentᆞConstant voltage feedback control: within ±3% F.S. of rated load voltageᆞConstant power feedback control: within ±3% F.S. of rated load power |
| Setting type | By front keys, by communication |
| Function | Output limit (OUT ADJ), AUTO/MAN selection, control method selection, RESET, SOFT START, SOFT UP/DOWN, output high/low limit, input correction, input slope correction, monitoring (control input, load voltage/current/power/resistance, power supply frequenc |
| Function_Alarm | Overcurrent alarm, overvoltage alarm, fuse break alarm, SCR error alarm, heater break alarm, heatsink overheat alarm |
| Accessories | 11-pin connector, isolating barrier: 4 |
| Weight | Approx. 5kg(approx. 4.2kg) |
The Autonics SPR3-470NFF Thyristor Power Controller supports 70A load current, 440VAC operation, a 3-digit LED display and structured digital inputs for mode switching. As part of the SPR3 Series, this model is designed for industrial automation systems requiring controlled 3-phase power management across process equipment, machinery and automated installations.
This controller is used in conveyors, packaging systems, automated assembly lines and heating-based applications where output stability and predictable switching performance are essential. Its forced-air cooling provides consistent operation, while the flexible output ranges help maintain stable performance across variable industrial loads.
The Autonics SPR3-470NFF Thyristor Power Controller delivers reliable control capability through its 70A rating, voltage compatibility and clear mode-select inputs. Autonics ensures dependable performance for industrial users requiring structured power control within automation environments. As a SPR3 Series product, it supports consistent power handling and is suited for continuous-use industrial applications.
