Page 7

www.sensata.com

Copyright © 2018 Sensata Technologies, Inc.

FUNCTION DIAGRAMS

t

u = switchover delay time

t

p = overload response time according to characteristic

class 10A or 5

DEVICE OPERATION

Forward/Reverse Control

Forward (clockwise) and reverse (anticlockwise) rotation can be selected via control inputs R and L respectively. The input signal detected first is exe-

cuted if both inputs are applied simultaneously. After the detected signal is cancelled, the rotational direction is reversed via the Soft Start function.

These control inputs have a common isolated ground connection NE.

Soft Start

Two motor phases are switched using phase-angle control to allow a steady increase of the phase currents. The motor torque increases in the same

manner when ramping up. This operation ensures the motor starts smoothly and helps to extend the life of the motor and the motor starter. The ramp

up time TON and starting torque MON can be adjusted via a rotary dial at the front.

Soft Stop

The Soft Stop function extends the natural run down time of the motor starter to allow for a smooth stop. The ramp down time TOFF, which is equal

to the ramp up time, and the decelaration torque MOFF can be adjusted via a rotary dial at the front.