Single Phase AC
Single Phase, Phase Angle:
In phase angle control, each SCR of the back-to-back pair is turned on for a variable portion of the half-cycle that it conducts. Power is regulated by advancing or delaying the point at which the SCR is turned on within each half cycle. Light dimmers are an example of Phase-Angle control.
Single Phase, Zero Cross:
In zero-cross control, load power is turned ON and OFF only when instantaneous value of the sinusoidal waveform is zero. Load power is controlled by switching the SCRs “ON” for a number of complete electrical half-cycles, and then “OFF” for a number of complete electrical half-cycles.
| Model | Phases | Firing Mode | Output | Current Low | Current High | Highlights |
|---|---|---|---|---|---|---|
| MicroFUSION Single Phase | Single phase | Phase angle, Zero cross, Zero Cross Transformer Mode, Fast Zero Cross | AC | 8 | 400 |
MicroFUSION is an ultra-compact high performance digital SCR controller that adapts to the analog environment as well as the digital environment. |
| FUSION Single Phase (AC) Power Controller 500 - 1200A | Single phase | Phase angle, Zero cross, Fast Zero Cross | AC | 500 | 1 200 |
24 - 600 Vac. A microprocessor-based SCR controller operating both analog and digital interfaces. A phase angle or zero cross fired controller which linearly controls, with respect to the setpoint, the AC voltage, current, or true power applied to an electrical load. Control is achieved by means of a pair of inverse parallel SCRs. |