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WEG SOFT START

Models & Pricing

Worried about too much current going into your motor? Control it with a WEG soft start. TEMCo carries the SSW05, SSW06, and SSW07 lines.

Soft Starter

What should I know before buying a WEG soft start?

Current and Phase

Both AC and DC motors, as well as single and three phase motors, can use a soft start. The WEG soft start will be AC and three phase.

Sizing

A motor is measured in current, kilowatts and horsepower. The bigger the motor the larger the soft start that will be required.

The number of starts and the environmental conditions also have to taken into account. Conditions can shorten the life length of the product and can cause unplanned process down time. For example, if the soft start is being used in a hot environment, then the soft start needs to be derated to allow for proper operation. In some cases, corrosive gases and acids may exist that can also damage the motor.

Applications

Common applications for soft starts including pumps, conveyor belts, fans and compressors.

The SSW05 can be used in pumps, fans, blowers and compressors.

The SSW07 can be used in chemical and petrochemical environments, plastic and rubber, pulp and paper, sugar and alcohol, beverages, cement and mining, food and beverage, textile, metallurgy, ceramics, glass, refrigeration, wood, sanitation, load transportation, pumps and fans.

The SSW06 can be used in fans, pumps, blowers, compressors, crushers, saws, grinders and mixers.

What is a kickstarter?

Soft starters may come with a kickstarter function, which will give the motor an extra pulse of torque if necessary.

Kickstarters are generally used in applications where high-friction loads will encounter friction. For example, a jammed conveyor belt or pump. The extra boost of torque will let the application run smoothly after that extra boost of torque loosens it up.

The Weg soft start SSW07 line comes with a kickstarter.

How Often Can I Turn On The Motor Soft Start?

The number of starts that a soft starter is limited to per hour is dependent upon the ambient temperature, the motor's starting current and the duration of that current.

It also depends on the soft start being used. The SSW06 and SSW07 can be started 10 times per hour, or every six minutes, while the SSW05 can be started 4 times per hour.

Motor Starting Duration

Start ramp is takes for a soft start to reach full voltage. If the ramp time is too long, it can result in the overheating of the motor and increase the risk of the overload relay tripping.

The duration of the start time for the motor will depend on the size of the load the motor is carrying: if the motor is unloaded, the ramp time will be shorter, but if the motor is heavily loaded, the start time will become longer.

Stop ramps may also be programmed. They are used when soft stopping is required.

The SSW05 has a start and stop ramp of up to 20 seconds.

The SSW07 has a start and stop ramp of up to 40 seconds.

The SSW06 has a programmable ramp up of 999 seconds, and a programmable deceleration of 299 seconds.

Motor Protections

All of the lines of Weg soft starts come with motor overload, over current and locked rotor, SCR overload, phase loss, phase sequence protection and bypass contactor

Overload protection can come from relays, which will open the circuit if there is overload so that the motor will not overheat.

Locked rotor protection alerts the Weg soft start if the current spikes due to the rotor becoming locked or jammed. The start will shut down the motor so that the windings do not burn out.

Phase loss, also known as single phasing, is when a 3 phase motor loses current in one of its lines, resulting in the other two lines to pick up the slack. This can damage the windings, and can result in overloading.

Phase sequence is when the direction of the phase in the circuit becomes reversed, causing damage to the motor.

A bypass contactor reduces heat and power losses in the softstarter. Once the starter reaches full current, the bypass contactor closes; the starter then becomes across the line.

All three lines of Weg soft start come with an internal bypass contactor, though an external one can be purchased for any soft start that does not already have one.


WEG Soft Start Lines

A soft starter lowers the motor inrush current, or its the initial surge of current into the windings when the motor starts. This cuts startup power demand and reduces strain on electrical circuits that supply power to motors.

There are three lines of Weg soft start: SSW05, SSW06 and SSW07.

WEG SSW07 Digital Soft Starter

SSW05

The SSW05 WEG Soft Start is a compact, fully digital soft starter with a DSP controller. Simple set-up and operation assured: parameters and set-up selections are made via dip switches and potentiometers. Small unit size makes installation quick and easy. Not suitable for high inertia loads.

WEGSSW05 soft starters will be either 230 or 460 volts, with horsepower beginning that 5 and going up to 400. Current ranges from 17 to 412 amps.

Applications: Pumps, fans, blowers, and compressors.

View products »
Reduced Voltage Soft Starter

SSW06

The SSW06 WEG Soft Start line includes a keypad, dual display, and red LED digits that provide visibility and make programming easier. Integral bypass contacts eliminate heat dissipation once the motor is at full voltage. Extremely compact and allows for simple integration into non-ventilated enclosures and replacement of electro-mechanical starters in Motor Control Centers.

The SSW06 will be 230, 460 or 575 volts. Current ranges from 10 to 1400, while horsepower goes from 3 to 1500, depending on the voltage.

Applications: Pumps, fans, blowers, compressors, crushers, saws, grinders, mixers.

View products »
SSW07 WEG Soft Start

SSW07

The SSW07 is designed to provide great performance at motor starts and stops with excellent pricing. Compact, easy to set up, and incorporates all electric motor protections. A keypad, a communication interface, or a motor PTC input can be added.

The SSW07 line will be 220/230, 460/480 or 575 volts. These soft starts have horsepower from 5 to 400, and current from 17 to 412.

Applications: Chemical & petrochemical, plastic & rubber, pulp & paper, sugar & alcohol, beverages, cement & mining, food & beverage, textile, metallurgy, ceramics, glass, refrigeration, wood, sanitation, load transportation, and pumps & fans..

View products »

WEG Soft Start Models & Pricing

SSW05 - 3 Phase, 230V or 460 V Input

Model No. Motor HP Soft Starter Amps Price
460 V 230 V
SSW050010T2246EPZ 3 5 10 $254.88 view »
SSW050016T2246EPZ 5 10 16 $286.43 view »
SSW050023T2246EPZ 7.5 15 23 $326.18 view »
SSW050030T2246EPZ 10 20 30 $354.38 view »
SSW050045T2246EPZ 15 30 45 $434.72 view »
SSW050060T2246EPZ 20 40 60 $519.83 view »
SSW050085T2246EPZ 30 60/75 85 $628.81 view »

SSW06 - 3 Phase, 230V, 460V or 575V Input

Model No. Motor HP Soft Starter Amps Price
230 V 460 V 575 V
SSW060010T2257ESZ 3 5 7.5 10 $633.40 view »
SSW060016T2257ESZ 5 10 15 17 $653.05 view »
SSW060023T2257ESZ 7.5 15 20 23 $716.83 view »
SSW060030T2257ESZ 10 20 30 30 $722.07 view »
SSW060045T2257ESZ 15 30 40 45 $851.66 view »
SSW060060T2257ESZ 20 40 60 60 $909.48 view »
SSW060085T2257ESZ 25/30 50/60/75 75 85 $1246.95 view »
SSW060130T2257ESZ 50 100 125 130 $1592.60 view »
SSW060170T2257ESZ 60 125 150 170 $1900.15 view »
SSW060205T2257ESZ 75 150 200 205 $2393.24 view »
SSW060255T2257ESZ 100 200 250 255 $2990.21 view »
SSW060312T2257ESZ 125 250 300 312 $3284.74 view »
SSW060365T2257ESZ 150 300 350 365 $3584.33 view »
SSW060412T2257ESZ 150 350 450 412 $3776.54 view »
SSW060480T2257ESZ 200 400 500 480 $4668.54 view »
SSW060604T2257ESZ 250 500 650 604 $5272.05 view »
SSW060670T2257ESZ 250 550 750 670 $6605.83 view »
SSW060820T2257ESZ 350 700 850 820 $7802.41 view »
SSW060950T2257ESH1Z 400 800 1050 950 $9918.82 view »
SSW060950T2257ESH2Z 400 800 1050 950 $11806.85 view »
SSW061100T2257ESH2Z 450 900 1200 1100 $11906.31 view »
SSW061400T2257ESH2Z 550 1200 1500 1400 $15344.95 view »

SSW07 - 3 Phase, 220/230V, 460/480V, or 575V Input

Model No. Motor HP Soft Starter Amps Price
220/230 V 460/480 V 575 V
SSW070017T5SZ 5 10 15 17 $532.68 view »
SSW070024T5SZ 7.5 15 20 24 $569.62 view »
SSW070030T5SZ 10 20 30 30 $587.98 view »
SSW070045T5SZ 15 30 40 45 $667.68 view »
SSW070061T5SZ 20 50 60 61 $712.72 view »
SSW070085T5SZ 30 75 75 85 $902.38 view »
SSW070130T5SZ 50 100 125 130 $1007.90 view »
SSW070171T5SZ 60 125 175 171 $1207.26 view »
SSW070200T5SZ 75 150 200 200 $1404.72 view »
SSW070255T5SZ 100 200 250 255 $2055.31 view »
SSW070312T5SZ 125 250 300 312 $2231.42 view »
SSW070365T5SZ 150 300 350 365 $2318.59 view »
SSW070412T5SZ 150 350 400 412 $2715.25 view »

Call us at 877.474.8209 to speak with an application engineer about your project.