BA9026 ETC, BA9026 Datasheet

BA9026

Manufacturer Part Number

BA9026

Description

Power Electronics, Softstarter with Softstop Ministart

Manufacturer

ETC

Datasheet

1.BA9026.pdf (2 pages)

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All technical data in this list relate to the state at the moment of edition. We reserve the right

for technical improvements and changes at any time.

Block diagram

Power Electronics

Softstarter with softstop BA 9026

ministart

Function diagram

T1 / T2 / T3

L1 / L2 / L3

X1 / X2

A1 / A2

M Mot

t 0 -t 1

t 2 -t 3

t 0

start

ramp up time

ramp down time

M7038_a

Softstarts are electronic devices designed to enable 1-phase or 3-phase

induction motors to start smoothly. The BA 9026 slowly ramps up the

current on three phases, therefore allowing the motor torque to build up

slowly. This reduces the mechanical stress or the machine and prevents

damage to conveyed material.

When the motor is up to full speed the semiconductors in BA 9026 are

bridged to prevent internal power losses and heat build up to addition

BA 9026 allows a softstop function prolonging the stop time of the motor

preventing high counter torques from abruptly stopping the motor.

LED green

LED yellow

LED red

For direct on line or star delta applications, terminals L1, L2, L3 are

connected to the mains contactor, with the motor connected to terminals

T1, T2, T3. A 24 V DC auxiliary supply is connected to terminals A1, A2

and a 24 V DC control signal connected to terminals X1-X2.

When power is connected to terminals L1, L2, L3 and 24 V DC is present

at terminals X1-X2, the softstart will commence. Potentiometer

and potentiometer "M

the softstart is complete the internal semiconductors are automatically

bridged.

When 24 V DC is removed from terminals X1-X2, the softstop function will

commence for the deceleration time period set on potentiometer

Motor load must always be connected as continuous operation of the

softstart with no load may cause overheating of the motor and softstart.

It is recomended that the softstart is protected by superfast semiconductor

fuses rated as per the current rating of the softstart of motor. However,

standard line and motor protection is acceptable, but for high starting

frequencies motor winding temperature monitoring is recommended.

Approvals and marking

Applications

Function

Indication

Principle of operation

Notes

Increases the life of squirrel cage motors and mechanical drives

Easily fitted to existing installations

3-phase control softstart and softstop

For motors up to 3 kW

Start current limited to 2 to 3 times rated motor current

Semiconductors bridged after softstart

Adjustable ramp time, starting torque and deceleration time

LED indication

DIN rail mounted

Galvanic isolation of control input and auxiliary power supply

Integrated overtemperature monitoring

Wide motor voltage range 200 to 460 V AC

Width 45 mm

Motor with gear, belt or chain drive

Fans, pumps, conveyor systems, compressors

Packaging machines, door-drives

Start current limiting on 3-phase motors

Reduces on off current on transformers and P.S.U's

" (0,5-5s) adjustst the ramp time (time motor takes to get to full speed)

" (0,5-5s) and deceleration voltage level set on potentiometer

" (30-80 % nomV).

" adjusts the start voltage (50-80 % nomV). When

power connected

power semiconductors bridged

overtemperature

BA 9026 / 12.11.02 d

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BA9026 Summary of contents

Page 1

Power Electronics Softstarter with softstop BA 9026 ministart Function diagram Mot start ...

... Please note, that even if the motor is at rest not physically separated from the mains. Because of this the motor must be disconnected from the mains via the corresponding manual motor starter. S1 I> I> I> (+) (+) BA9026 M6436_a M 3 ...

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