Saftronics SY6 overview
Saftronics SY6 Series Heavy-Duty Sold State Controllers | Solid State Reduced Voltage Starter The SY6 is a heavy duty solid state reduced voltage controller con...
Manufactured bySaftronics
Part number or familySY6
Product groupSolid State Reduced Voltage Starters
Product details
Manufactured bySaftronics
Product groupSolid State Reduced Voltage Starters
DescriptionSaftronics SY6 Series Heavy-Duty Sold State Controllers | Solid State Reduced Voltage Starter The SY6 is a heavy duty solid state reduced voltage controller containing 6 SCR's (silicon controlled rectifiers), designed to control the current supplied to an induction motor. The SCR's are connected in 3 back-to-back pairs, phase controlled over 180 degrees of each cycle of power line frequency by a digital firing circuit, containing a unique circuit which continuously synchronizes to any frequency variations and which requires no customer adjustment.Since a motor's torque varies as the square of applied current, SY6 controllers can be programmed to provide a gradual buildup of torque from a low value to almost full motor locked rotor torque (step ramp mode), to provide gentle, jolt-free starting of any induction motor. In addition, for light load applications such as pumps and fans, they can be programmed to limit peak starting currents to a constant low value (constant current mode), and so prevent excessive voltage drops during motor starting.Units rated over 40 amps are designed for use with a bypass contactor which is supplied as standard on packaged starters. The bypass contactor carries the motor current after the SY6 brings the motor up to full speed. This minimizes the heat generated by the SY6 and eliminates the need for a large heatsink. Nema 12 enclosed units above 18 amps also utilize this feature.
Key FeaturesAC Solid State Motor Starter 7 1/2 - 125 HP Universal Source Matching. SY6 automatically adjusts itself to whatever input voltage is applied 2 modes of operation- Current Ramp - for heavy friction-type loads- Constant Current - for light inertia-type loads Closed loop control with current feedback Compact size 6 SCR firing Digital rotary switches for motor Full Load Ampere (FLA) selection Available in a full range of package configurations (chassis, NEMA 1, NEMA 12, etc.) Full range of options available (circuit breaker, reversing, push buttons, etc.)
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Saftronics
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Solid State Reduced Voltage Starters
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