Eaton / Cutler Hammer
Products

Intelligent Technologies Soft Starters

Models S801 & S751

 

The Intelligent Technologies (IT.) Line of Reduced Voltage Soft Starters from Cutler-Hammer is very compact, multi-functional, easy to install and easy to program. Designed to control acceleration and deceleration of 3-phase motors, the line is available for current ranges from 12 amp all the way through 1000 amp applications and is suitable for mounting in motor control centers or in enclosed control (NEMA 1, 4, 4X and 12) applications.

The Intelligent Technology Line of Reduced Voltage Soft Starters comes standard with the control interface module.

Application Description

The S801 line of Intelligent Technologies Soft Starters is designed to be the smallest, most compact soft starter in the market today. With this small size, it can easily fit in place of existing soft starter designs, wye-delta starters or across-the-line NEMA and IEC starters. This feature allows easy retrofits of existing Motor Control Centers or Enclosures and saves the expense of replacing existing structures or adding a new one to house a soft starter.

The product is designed to work with 3-phase motors in a Delta (3-lead) con- figuration. The S801 works with all motors from fractional horsepower up to motors requiring 1000 amps of steady state current. The built-in over-load (in ranges from 12 – 1000 amps) and run bypass contactor make installation and setup quick and easy. The overload also offers some advanced protective functions to give additional motor protection.

With the pump control option, it is the number one soft starter available for pumping applications. The unique soft stopping control provides a smooth transition for stopping a motor and eliminating the “water-hammer” effect that can damage pipes, valves and pumps.

Features

  • Built-in overload protection

  • Adjustable ramp times

  • Adjustable torque control

  • Adjustable kick start control

  • Programmable overload settings, 31 – 100% (3.2:1) of rated current for the unit

  • Physically fits in place of most NEMA and IEC starters

  • Easy to use control interface module

  • Soft stop control

  • Built-in run bypass contact

  • Multiple trip class settings (5, 10, 20 and 30)

  • Six SCR control

  • Optional pump control

Benefits

  • Reduced wear on belts, gears, chains, clutches, shafts and bearings

  • Allows for controlling the inrush current to the motor

  • Reduced inrush current leads to more stable power grid and can lower peak demand charges

  • Elimination of water-hammer in pumping applications

  • Less shock to product on conveyor lines and material handling gear

  • 24V DC control enhances personnel and equipment safety

Operation Overload Functionality

  • Over-temperature
    Protects the device from overheating. Starter will shutdown at 110�C.

  • Jam
    Selectable protective feature, unit trips to prevent damage to motor during normal run.

  • Stall
    Selectable protective feature, unit trips to protect system in event motor can not get to rated speed in the defined ramp period.

  • Phase Loss
    Selectable protective feature, trips under voltage loss condition to any phase.

  • Phase Reversal
    Selectable protective feature, trips when phase rotation is something other than A-B-C.

  • Kick Start
    Selectable feature which provides a current “kick” of up to 550% of full load current for 0 to 2.0 seconds. This provides the additional torque required at startup to break free a motor.

  • Ramp
    Start Provides a constant increase in torque to the motor.

  • Current Limit Start
    Limits the maximum current available to the motor during the startup phase.

  • Soft Stop
    Allows for a controlled stopping of a frictional load.

  • Shorted SCR Detection
    Monitors for shorted SCR in the power polls

 

S801 Soft Starter
The S801 family of soft starters are designed to control and protect three-phase motors from 12A to 1000A, 600V. They include built-in overload protection and run bypass contactor for quick and easy setup and installation. Available as open style, enclosed (Type 1, 3R, 4X, 12) and MCCs.

  • Four compact frame sizes: 65mm, 110mm, 200mm, and 280mm

  • 24V DC control

  • Protective functions: overload, over-temperature, jam, stall, phase loss, phase reversal, and shorted SCR detection

  • Control functions: kick start, ramp start, current limit start, soft stop, and pump control to eliminate water hammer

  • Programmable overload settings: 3.2:1 FLC, Trip Class 5, 10, 20, and 30

  • Six SCR control

  • Control features include fault indication and digital inputs and outputs

S751 Soft Starter
The S751 micro soft starter is designed to control and protect three-phase motors from 0.25A to 27A, 600V in the most cost critical applications. They include built-in overload protection and run bypass contactor for quick and easy setup and installation.

  • Compact size: 54mm wide

  • 24V DC control

  • Protective functions: overload, phase loss, phase imbalance

  • Control functions: ramp start and soft stop

  • Programmable overload settings: 3.2:1 FLC, Trip Class 10, 20, and 30, auto/manual reset

  • Utilizes electromechanical front mounted auxiliary contacts and SNAP modules for network communications