Automation and Drives s SIRIUS 1 s s SIRIUS Soft Starts

Automation and Drives

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Topics

– Definition of SIRIUS Soft Starts

– Features & Benefits of SIRIUS Soft Starts

– Applications of SIRIUS Soft Starts

– How to use SIRIUS Soft Starts


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From the Dictionary:– Sirius - Sir·i·us (sr-s) n.A star in the constellation Canis Major, the brightest

star in the sky, approximately 8.6 light-years distant from Earth. Also called Dog Star, Sothis. [Latin Srius, from Greek Seirios, from seirios, burning.]

Siemens definition of SIRIUS Soft Starts– Sirius - Sir·i·us (sr-s) n. A line of high quality soft starts

for low hp applications, the brightest star in the sky.


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Features & Benefits– Internally Bypassed

> No external bypass necessary> No power loss or heat

generation during periods of continuous operation

– 2 phase control> Provides optimal control of

motors up to 60 hp> Reduces current and torque

during start

L1 L2 L3

M3 ~


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Features & Benefits

– UL Listed

– CSA Certified

– CE mark


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Features & Benefits– Compact Design

> 4 sizes w x h x d (mm)

– S00 45 x 95 x 95

– S0 45 x 125 x 120

– S2 55 x 145 x 145

– S3 70 x 165 x 180


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Features & Benefits

– DIN rail mountable

– Supply Voltage Ranges> 3 phase, 50/60 hz, 200-460 V> 3 phase, 50/60 hz. 460-575 V

– Wide control power range> 110-230V, 50/60 AC or DC (Standard)> 24 V, 50/60 AC or DC (Optional)


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Features & Benefits

– 2 LEDs for diagnostics

– Two output relays for status

indication (Sizes S0 –S3)


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Features & Benefits– Designed for compatibility with other Siemens SIRIUS

offerings

– Recommended overload, Class 10, 3RB10 Solid State

Overload

– Compatible with 3RV10 MSP


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Features & Benefits 3RW30 - 3 phase

– Single Ramp Soft Start and Soft Stop

– Independent adjustment for both Starting, Stopping and Initial Voltage

– Single speed motor operation

tRan t

US

UN

U

tRaus


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Features & Benefits 3RW30 - 1 phase - New

– Single Ramp Soft Start

– Independent adjustment for Starting Time and Initial Voltage

– For Single Speed Motor Operation


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Applications

– When do I use SIRIUS Soft Starts?

– Low duty cycle applications> Up to 10 starts per hours without de-rating> More than 10 starts per hour - contact technical support

– Loads that will start up relatively quickly> Do not use on loads that take longer than 20 seconds to starts


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Applications

– Pumps> Avoidance of pressure surges> Prolonged life of piping system

– Conveyor belts> Jolt free starting> Jolt free deceleration> Allows for lower grade belt material to be utilized


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Applications– Agitators / Mixers

> Reduced starting current

– Fans > Gentle operation of gears and belts

– Escalators> Eliminates the shock of an across the line start


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Using a SIRIUS Soft Start

– Control power supply to A2/A1

– Contact closure between A1/1 will cause the soft start to run

– If the Soft Stop feature is used the soft start will automatically

ramp the voltage down when the run signal is removed


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Using a SIRIUS Soft Start– Offers three types of

control:> pushbutton> switches> automatic start

LN

L1 L2 L3

T1 T2 T313 2414/23

A2 A1

1

On Off

startended


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Now you know about SIRIUS Soft Starts.

Questions?

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Automation and Drives s SIRIUS 1 s s SIRIUS Soft Starts