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Miniature Soft Starter 8-58A, 220-600V
Instruction ManualVer. 21.2. 2002
Table of ContentsPage 3 4 5 6 7 8 Subject Starter Selection Installation Notes Wiring Starter Settings & Start-up Procedure Dimensions 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.
Attention1. 2. 3. 4. This product was designed and tested for compliance with IEC 947-4-2 for class A equipment. Use of the product in domestic environments may cause radio interference, in which case the user may be required to employ additional mitigation methods. Utilization category is AC-53a or AC53b. Form1. 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.
Starter Selectionis a Miniature Analogue soft starter The Solstart which incorporates two sets of thyristors to start a three phase squirrel cage induction motor. By supplying a slowly increasing voltage, it provides soft start and smooth stepless acceleration, while drawing the minimum current necessary to start the motor. A Soft Stop feature can be enabled when the RampDown potentiometer is adjusted. When used, upon stop signal (open contact terminals 1and 2), starter’s output voltage is slowly reduced to zero.Soft-Start CharacteristicsU% 100 400 50 100 10 Voltage Current Torque 100 I% M%
The starter should be selected in accordance with the following criteria:1. Motor Current & Starting Conditions Select the starter according to motor's Full Load Ampere (FLA) - as indicated on its nameplate (even if the motor will not be fully loaded).
The Solstart is designed for operation of: 3.5 x In, for 5 Sec. at 40°C. Max. Starts per Hour: 4 starts per hour at maximum ratings. Up to 10 starts per hour at light load applications (consult factory). Note: For very frequent starts (inching applications) the inching current should be considered as the Full Load Current (FLC) – consult factory.2. Mains Voltage
Soft-Stop CharacteristicsU% 100 50 10 Voltage
Each starter is factory set for one of the following levels according to the Ordering Information. Voltage Tolerance +10 +10 +10 +10 +10 -15 % -15 % -15 % -15 % -15 %
Used for controlled deceleration of pumps and high friction loads.
220 - 240 V 380 - 415 V 440 V 460 - 500 V 575 - 600 V Frequency: 50 / 60 Hz.
Solstart Ratings and Frame Sizes
Max. Motor FLA (Amp) 8 17 22 31 44 58
Starter Type FLC(Amp.) Solstart 8 Solstart 17 Solstart 22 Solstart 31 Solstart 44 Solstart 58
Frame Size S1 S2 S3
Dimensions (mm) & Weights (Kg)
Size S1 S2 S3
Width 45 90 65
Height 75 75 190
Depth 110 105 114
Weights (Kg) 0.42 0.55 1.3
Installation NotesPrior to Installation Check that Motor's Full Load Ampere (FLA) is lower than or equal to starters Full Load Current (FLC) and that Mains voltage is equal to the rated voltage of the starter. Mounting • The starter must be mounted vertically. Allow sufficient space above and below the starter for suitable airflow. • It is recommended to mount the starter directly on the rear metal plate of the switchgear for better heat dissipation. • Do not mount the starter near heat sources. • Protect the starter from dust and corrosive atmospheres. Temperature Range and Heat Dissipation The starter is rated to operate over a temperature range of –10ºC (14ºF) to +40ºC (104ºF). Relative non-condensed humidity inside the enclosure should not exceed 93%. The heat dissipation during continuous operation is Approx. 0.3 x In (in watts). Example: When motor's current is 17 Amp, heat dissipation will be approx. 5.1 watts. Internal enclosure heating can be reduced through the use of additional ventilation. Additional Ventilation Short Circuit Protection The Solstart should be protected against a short circuit by Thyristor Protection fuses. The recommended I2 t values are: Solstart Type Solstart 8 Solstart 17 Solstart 22 Solstart 31 Solstart 44 Solstart 58 I²t 400 2000 2500 3000 6000 12000
Caution Power factor correction capacitors must not be installed on starter's Load side. When required, Install capacitors on the Line side.
Warning When Mains voltage is connected to the starter, even if start signal has not been initiated, full voltage will appear on the starter’s load terminals. Therefore, for isolation purposes it is required to connect an isolating device (C/B, switch, line contactor, etc) upstream to the Solstart (on the Line Side).
General purpose enclosure with filter on the air inlet and Fan on air outlet.
Fan, creating air circulation
Voltage Spike Protection Voltage spikes can cause malfunction of the starter and damage the SCRs. When expected, use suitable protection such as Metal Oxide Varistors (consult factory for further details).
Built-in Bypass The Solstart incorporates two internal bypass relays allowing 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 open and stop the motor. 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.
WiringBlock 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 L3 NeutralQ1 Do not connect voltage to terminals 1-2
Start / Stop I> I> I>S1
Ground (31-58A only) SolstartR1C R1A
End Of Acceleration (only for 31-58A)