Saf OPAL SS6 User Manual download pdf (Page 9)

OPAL SS6 Reduced Voltage Starters

Page 2

1.1.2 OPTIONAL FEATURES

- Solid State Reversing

Through the addition of 4 Silicon Controlled Rectifiers ( SCR's ) and a reversing card,

smooth motor reversing is achieved without having to stop the motor.

- Soft Stop

Motor deceleration is controlled to eliminate water hammer effect on pump applications.

- By-Pass Contactor

Once the motor has reached operational speed, the by-pass contactor is closed. This shorts

the SCR's which eliminates the voltage drop across the SCR's, in turn being more efficient

and ridding excess heat.

- Up-To-Speed Contact / Shear Pin Protection / Energy Saver

- Shorted SCR Sensor and Protection

Sensor detects shorted SCR and trips circuit breaker or contactor upstream.

- Linear Accel\Decel Card

Provides linear accel and decel independent of load with the use of speed feedback

- DC Injection Braking

Through the addition of 4 SCR's and a DC Injection card, adjustable braking of an AC motor

is performed. More information is provided in the OP-STOP, DC INJECTION manual.

- External Reset Push Button

- Start, Stop, Reverse Push Buttons

- NEMA 4 or NEMA 12 Enclosures

1.2 APPLICATION NOTES

1.2.1 OPERATION MODES

1.2.1.1 Constant Current Mode

Applications

*Compressors

*Empty Mixers

*Empty Crushers

*Chippers

*Pumps/Fans

*Centrifuges

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Saf OPAL SS6 User Manual Page 9