SolstartMiniature Soft Starter8-58A, 220-600V
Instruction ManualVer. 21.2. 2002Table of Contents
Page Subject3 Starter Selection4 Installation Notes5 Wiring6 Starter Settings & Start-up Procedure7 Dimensions8 Technical Specification
Safety • Read this manual carefully before operating the equipment and follow its instructions. • Installation, operation and maintenance should be in strict accordance with this manual, national codes and good practice. Installation or operation not performed in strict accordance with these instructions will void manufacturer's warranty. • Disconnect all power inputs before servicing the soft-starter and/or the motor. • Prior to the installation , check and verify that no parts (bolts, washers, etc) will fall into the starter.
Attention 1. This product was designed and tested for compliance with IEC 947-4-2 for class A equipment. 2. Use of the product in domestic environments may cause radio interference, in which case the user may be required to employ additional mitigation methods. 3. Utilization category is AC-53a or AC53b. Form1. 4. For further information see Technical Specification.
Warnings • Internal components and P.C.B's are at Mains potential when the Solstart is connected to mains. This voltage is extremely dangerous and may cause death or severe injury if contacted. • When the Solstart is connected to Mains, even if start signal has not been issued, full voltage may appear on motor's terminals. Therefore, for isolation purposes it is required to connect an isolating device (C/B, switch, line contactor, etc) upstream to the Solstart. • Starter must be properly grounded (except 8-22A) to ensure correct operation and safety. • Check that Power Factor capacitors are not connected to the output side of the soft starter
The company reserves the right to make any improvements or modifications to its products without prior notice.
The Solstart is a Miniature Analogue soft starter The starter should be selected in accordance with thewhich incorporates two sets of thyristors to start a following criteria:three phase squirrel cage induction motor. Bysupplying a slowly increasing voltage, it provides soft 1. Motor Current & Starting Conditionsstart and smooth stepless acceleration, while drawing Select the starter according to motor's Full Loadthe minimum current necessary to start the motor. Ampere (FLA) - as indicated on its nameplate (even if the motor will not be fully loaded).A Soft Stop feature can be enabled when the Ramp-Down potentiometer is adjusted. When used, upon stop The Solstart is designed for operation of:signal (open contact terminals 1and 2), starter’s output 3.5 x In, for 5 Sec. at 40°C.voltage is slowly reduced to zero. Max. Starts per Hour: 4 starts per hour at maximumSoft-Start Characteristics ratings. Up to 10 starts per hour U% I% M% at light load applications (consult 100 factory). Note: For very frequent starts (inching applications) 400 the inching current should be considered as the 50 100 Full Load Current (FLC) – consult factory. 100 10
Voltage Current Torque 2. Mains Voltage
Each starter is factory set for one of the following levels according to the Ordering Information.Soft-Stop Characteristics
U% Voltage Tolerance 100 Used for controlled 220 - 240 V +10 -15 % deceleration of pumps and high 380 - 415 V +10 -15 % 50 friction loads. 440 V +10 -15 % 460 - 500 V +10 -15 % 10 575 - 600 V +10 -15 % Voltage Frequency: 50 / 60 Hz.
Solstart Ratings and Frame Sizes Max. Motor Starter Type Frame FLA (Amp) FLC(Amp.) Size 8 Solstart 8 S1 17 Solstart 17 S2 22 Solstart 22 31 Solstart 31 44 Solstart 44 S3 58 Solstart 58
Dimensions (mm) & Weights (Kg)
Size Width Height Depth Weights (Kg) S1 45 75 110 0.42 S2 90 75 105 0.55 S3 65 190 114 1.3
Prior to Installation Short Circuit ProtectionCheck that Motor's Full Load Ampere (FLA) is lower The Solstart should be protected against a short circuitthan or equal to starters Full Load Current (FLC) and by Thyristor Protection fuses.that Mains voltage is equal to the rated voltage of the The recommended I2 t values are:starter. Solstart Type I²tMounting Solstart 8 400 • The starter must be mounted vertically. Allow Solstart 17 2000 sufficient space above and below the starter for Solstart 22 2500 suitable airflow. Solstart 31 3000 • It is recommended to mount the starter directly on the rear metal plate of the switchgear for better Solstart 44 6000 heat dissipation. Solstart 58 12000 • Do not mount the starter near heat sources. • Protect the starter from dust and corrosive atmospheres. Caution Power factor correction capacitors must not beTemperature Range and Heat Dissipation installed on starter's Load side. When required,The starter is rated to operate over a temperature range Install capacitors on the Line side.of –10ºC (14ºF) to +40ºC (104ºF).Relative non-condensed humidity inside the enclosureshould not exceed 93%.The heat dissipation during continuous operation is WarningApprox. 0.3 x In (in watts). When Mains voltage is connected to the starter,Example: When motor's current is 17 Amp, heat even if start signal has not been initiated, fulldissipation will be approx. 5.1 watts. voltage will appear on the starter’s loadInternal enclosure heating can be reduced through the terminals. Therefore, for isolation purposes it isuse of additional ventilation. required to connect an isolating device (C/B, switch, line contactor, etc) upstream to the Solstart (on the Line Side).Additional Ventilation
Built-in Bypass General purpose enclosure The Solstart incorporates two Solstart internal bypass relays allowing with filter on the air inlet and Fan on air outlet. current flow through the thyristors only during starting process. At the end of the starting process the built-in relays bypass the thyristors and carry the current to the Motor. Upon stop signal, or in case of fault, the bypass relays will Solstart open and stop the motor. Fan, creating air circulation When Ramp-Down potentiometer is set to allow soft-Stop process, upon stop command, the bypass relays will open immediately and the current will flow through the thyristors. The voltage will then be reduced slowly and smoothly to zero.Voltage Spike ProtectionVoltage spikes can cause malfunction of the starter anddamage the SCRs. When expected, use suitableprotection such as Metal Oxide Varistors (consultfactory for further details).
Block and Connection Diagram Stop / Start ......................................... Terminals 1 - 2 By voltage free contact (Dry contact) Close: Start command. Open : Stop command.
Warning Do not apply voltage to terminals 1 - 2.
End of Acceleration (E.O.A) .......... Terminals 3 - 4 EOA relay exists only in starters 31-58A. Voltage free, N.O., 5A / 250VAC, 2000VA max., The contact closes after the time adjusted on the "Ramp-Up" potentiometer. The contact returns to its original position on stop signal, on fault condition, upon voltage outage and at the beginning of Soft Stop.
Warning Start/Stop with a maintained contact ! When the line contactor is operated by a maintained contact, in case of Mains failure, the motor will be automatically restarted upon voltage restoration.
L1 L2 L3Neutral Do not connect voltage to terminals 1-2Q1
Start / Stop I> I> I> S1 1/L1 3/L2 5/L3
Ground x2 (31-58A only) Solstart T3/W
End Of Acceleration (only for 31-58A) U1 V1 W1