WEG SSW-08 User Manual
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WEG SSW-08 User Manual

Soft-starter
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Motors | Automation | Energy | Transmission & Distribution | Coatings
Soft-Starter
Arrancador Suave
Soft-Starter
SSW-08
User's Manual
Manual del Usuario
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Summary of Contents for WEG SSW-08

  • Page 1 Motors | Automation | Energy | Transmission & Distribution | Coatings Soft-Starter Arrancador Suave Soft-Starter SSW-08 User's Manual Manual del Usuario Manual do Usuário...
  • Page 2 Soft-Starter User’s Guide Manual del Usuario del Arrancador Suave Manual do Usuário da Soft-Starter Serie: SSW-08 English / Español / Português Document: 10000008521 / 03 Date/Data: 03/2011...
  • Page 3 Summary of revisions / Sumario de las revisiones / Sumário das revisões The information below describes the revisions in this manual. Revision Description Chapter First Edition Size 4 included Revision after the size 4 UL certification. Changed: item 3.2; figure 3.4; figure 3.5; item 3.2.4.1; 3, 4, 5, 6, 8 3.2.4.2;...

  • Page 4: Table Of Contents

    3.2.2 Location of the Grounding, Control and Power Connections .......... 13 3.2.3 Recommended Power and Grounding Cables ..............13 3.2.4 Power Supply Connection to the Soft-Starter SSW-08 ............. 14 3.2.4.1 Power Supply Capacity ..................... 15 3.2.4.2 Recommended Fuses ....................15 3.2.4.3 Recommended Contactors ..................
  • Page 5 7. OPTIONS AND ACCESSORIES 7.1 IP20 KIT .............................48 8. TECHNICAL CHARACTERISTICS 8.1 NOMINAL POWERS AND CURRENTS ACCORDING TO UL508 ..........49 8.2 NOMINAL POWERS AND CURRENTS FOR STANDARD IP55, IV POLE WEG MOTOR ....49 8.3 POWER DATA ...........................50 8.4 ELECTRONICS AND PROGRAMMING DATA ................50...

  • Page 6: Safety Instructions

    Safety Instructions 1. SAFETY INSTRUCTIONS This Manual contains the necessary information for the correct use of the Soft-Starter SSW-08. It was written to be used by qualified personnel with suitable training or technical qualifications to operate this type of equipment.
  • Page 7 Safety Instructions NOTE! In this Manual, qualified personnel are those trained to: 1. Install, ground, power-up, and operate the Soft-Starter SSW-08 according to this manual and the required safety procedures; 2. Use protection equipment according to established regulations; 3. Give First Aid.

  • Page 8: General Information

    Soft-Starter, or can be obtained at WEG’s web site: http://www.weg.net. 2.2 ABOUT THE SOFT-STARTER SSW-08 The Soft-Starter SSW-08 is a high performance product with 2 phases controled that permits the start control of the three phase AC induction motors. Thus, it prevents mechanical shocks on the load and current peaks in the supply line.
  • Page 9 Programmable Programmable Digital Power Supply Power Supply Digital Inputs Outputs 14/23 Digital Signal Processor Three-Phase Motor Figure 2.2.1: Soft-Starter SSW-08 size 1,2 and 3 block diagram Three-Phase Control Programmable Programmable Digital Power Supply Power Supply Digital Inputs Outputs 14/23 Digital Signal...

  • Page 10: Soft-Starter Ssw-08 Identification Plate

    Manufacturing date (14 corresponds to week and H to year) Figure 2.3: Soft-Starter SSW-08 identification plate Position of the Identification Plate on the Soft-Starter SSW-08: FRONTAL VIEW X VIEW Figure 2.4: Detail of the Soft-Starter SSW-08 identification plate SSW-08 | 5...
  • Page 11 General Information 6 | SSW-08...

  • Page 12: Receiving And Storage

    Damage has occurred during transport. If so, contact the carrier immediately. „ If the Soft-Starter SSW-08 is not installed immediately, store it in its package in a clean and „ dry place with temperature between -25 °C (-13 °F) and 65 °C (149 °F). 1 hour at -40 °C (-40 °F) is permitted.

  • Page 13: Installation And Connection

    Soft-Starter SSW-08. 3.1 MECHANICAL INSTALLATION 3.1.1 Environmental Conditions The location of the Soft-Starters SSW-08 is an important factor to assure the correct operation and high product reliability. Avoid: Direct exposure to sunlight, rain, high moisture and sea air ;...

  • Page 14: Mounting Specifications

    * IP20 with optional. 3.1.3 Mounting Specifications To install the Soft-Starter SSW-08 leave at least the free spaces surrounding the Soft-Starter as in figure 3.2 below. The dimensions of these free spaces are described in table 3.2. Table 3.2: Recommended free spaces...

  • Page 15: Mounting Inside A Panel

    Figure 3.2: Free spaces for ventilation 3.1.3.1 Mounting Inside a Panel For Soft-Starters SSW-08 installed in panels or closed metallic boxes exhaustion/cooling is required so the temperature does not exceed the maximum allowed. Refer to dissipated nominal power in table 3.3.

  • Page 16: Mounting On Surface

    Installation and Connection 3.1.3.2 Mounting on Surface Figure 3.3 shows the installation of the Soft-Starter SSW-08 on the surface of a mounting plate. Figure 3.3: Installation procedures of the Soft-Starter SSW-08 on a surface 3.2 ELECTRICAL INSTALLATION DANGER! The Soft-Starter SSW-08 cannot be used as an emergency stop device.

  • Page 17: Power Terminals

    3.2.1 Power Terminals The power connection terminals can be of different sizes and configurations depending on the Soft-Starter SSW-08 model as shown in figures 3.5 and 3.6. Terminals : R / 1L1, S / 3L2 and T / 5L3: AC supply line.

  • Page 18: Location Of The Grounding, Control And Power Connections

    Naked or silver coated copper busbars with round edges with 1 mm radius with ambient „ temperature of 40 ºC (104 ºF) and bus temperature of 80 °C (176 °F). NOTE! For correct cable dimensioning, consider the installation condition and the maximum permitted line voltage drop. SSW-08 | 13...

  • Page 19: Power Supply Connection To The Soft-Starter Ssw-08

    600 kcmil 3.2.4 Power Supply Connection to the Soft-Starter SSW-08 DANGER! The AC input must be compatible with the voltage range of the Soft-Starter SSW-08. DANGER! Provide a power supply disconnecting switch for the Soft-Starter SSW-08. This disconnecting switch must disconnect the AC input voltage to the Soft-Starter SSW-08 whenever necessary (for example: during maintenance services).

  • Page 20: Power Supply Capacity

    312 A 365 A 412 A The SSW-08 can be installed on power supplies with a higher fault level, if it is protected by ultra-rapid fuses with an adequate interrupting current and an I t according to item 3.2.4.2. 3.2.4.2 Recommended Fuses High speed fuses must be used at the input, wich will protect the SSW-08 against short circuit.

  • Page 21: Recommended Contactors

    DANGER! Power factor correction capacitors must never be installed at the output of the Soft-Starter SSW-08. (U / 2T1, V / 4T2 and W / 6T3). ATTENTION! To ensure that the protections based on the current reading and display operate correctly, for example the overload, the motor nominal current must not be lower than 50 % of the nominal Soft-Starter SSW-08 current.

  • Page 22: Standard Three-Wire Connection

    Installation and Connection 3.2.5.1 Standard Three-Wire Connection Line current of the Soft-Starter SSW-08 is equal to the motor current. 2/V1 5/V2 4/U2 2/V1 6/W2 4/U2 5/V2 3/W1 1/U1 1/U1 3/W1 6/W2 Figure 3.7: Soft-Starter SSW-08 with standard connection 3.2.6 Grounding Connections DANGER! The Soft-Starter must be grounded for safety purposes (PE).
  • Page 23 The Soft-Starter SSW-08 is developed to be used in industrial systems (Class A) according to Standard EN60947-4-2. It’s necessary to have a distance of 0.25 m (10 in) between the Soft-Starter SSW-08 and the cables between the Soft-Starter SSW-08 and the motor.

  • Page 24: Control And Signal Connections

    Voltage: 250 Vac Current: 1 A Relay 2 output - Full voltage Figure 3.9: Control terminals of the Soft-Starter SSW-08 NOTE! It is recommended to use shielded cables for the Dix inputs when using long cables (above 30m) in noisy enviroments. The metallic shield and A2 must be grounded.

  • Page 25: Recommended Set-Ups

    7 In case of maintenance of the Soft-Starter SSW-08 or the motor it is necessary to remove the input fuses or disconnect the power supply to ensure the complete equipment disconnection from the power supply.

  • Page 26: Recommended Set-Up With Command Via Two-Wire Digital Inputs And Isolation Contactor

    Figure 3.10: Recommended set-up with commands via two-wire digital inputs and isolation contactor 3.3.2 Recommended Set-up with Command via Three-wire Digital Inputs and Circuit-Breaker R S T Refer to notes in item 3.3. U V W Figure 3.11: Recommended set-up with commands via three-wire digital inputs and a circuit-breaker SSW-08 | 21...

  • Page 27: Recommended Set-Up With Command Via Two-Wire Digital Inputs And Direction Of Rotation

    Figure 3.12: Recommended Set-up with Command via Two-wire Digital Inputs and Direction of Rotation NOTE! To program the parameters shown above, is necessary the use of keypad or serial communication. See the Programming Manual for more information. 22 | SSW-08...

  • Page 28: Recommended Set-Up With Command Via Two-Wires Digital Inputs And Dc-Braking

    U V W Figure 3.13: Recommended Set-up with Command via Two-wires Digital Inputs and DC-Braking NOTE! To program the parameters shown above, is necessary the use of keypad or serial communication. See the Programming Manual for more information. SSW-08 | 23...

  • Page 29: Symbols

    Relay or contactor coil Three-phase motor Normally open contact (NO) Emergency button Indicator light Transformer Circuit-breaker N.O Contact (with retention) (opens under load) Resistor Normally closed (NC) push-button Capacitor Normally open (NO) push-button Circuit-breaker with undervoltage release 24 | SSW-08...

  • Page 30: Setting The Ssw-08

    Voltage Ramp Starting: This is the most commonly used method. Very easy to program and set. The Soft-Starter SSW-08 imposes the voltage applied to the motor. Generally applied to loads with a lower initial torque or a square torque. This kind of control can be used as an initial working test.

  • Page 31: Kick Start

    DIP Switch Figure 4.2: Kick Start enabling Soft-Starter SSW-08 offers a Kick Start function for loads that present a large initial resistance to movement. This function is enabled through the Kick Start DIP Switch. The duration of the voltage pulse is set through the trimpot Kick Start Time.

  • Page 32: Current Limit Setting

    This setting defines the maximum limit of the current from phases R and S during motor starting in percentage of the nominal current of the Soft-Starter. If the current limit is reached during the start of the motor, Soft-Starter SSW-08 will maintain the current at this limit until the motor reaches nominal speed.

  • Page 33: Acceleration Ramp Time Setting

    Please consider that in cases where the relation of the SSW-08 current and the motor nominal current is 1.00, the maximum time that the SSW-08 can work with 3 x In is 20 seconds. 4.6 DECELERATION RAMP TIME SETTING Enables and sets the time of voltage decrease.

  • Page 34: Motor Current Setting

    Setting the SSW-08 4.7 MOTOR CURRENT SETTING This setting defines the ratio of the SSW-08 current and the motor current. The value of the setting is very important since it defines the protection of the motor driven by the SSW-08. The setting of this function interferes directly in the following motor protections: Overload;...

  • Page 35: Motor Electronic Overload Protection

    Setting the SSW-08 4.8 MOTOR ELECTRONIC OVERLOAD PROTECTION The motor electronic overload protection simulates the heating and cooling of the motor, also known as thermal image. This simulation uses as input data the True rms current. When the thermal image passes the limit, the overload protection trips and turns the motor off.
  • Page 36 Setting the SSW-08 Time t(s) 1000 Class 30 Class 25 Class 20 Class 15 Class 10 Class 5 x In motor Current S.F.=1 Figure 4.9: Motor protection thermal classes in hot condition at 100 % ln Overload Protection Enabling DIP Swicth...

  • Page 37: Reset

    „ 4.9 RESET A fault condition can be reset using the RESET key at the front of the SSW-08 or through a push-button (0.5 seconds) at DI3 (digital input for RESET). Another way to reset the SSW-08 is by switching Off/On the electronic power supply (A1 and A2).

  • Page 38: Output Relay Operation

    (when it is set via trimpot) or when the SSW-08 receives the disable command. The relay of the Full Voltage Function closes the N.O. contacts (14/23-24) every time the SSW-08 „ applies 100 % of the voltage to the driven motor. This contact opens when the SSW-08 receives the disable command. (Motor Voltage)

  • Page 39: Applications And Programming

    ATTENTION! To know the correct programming of the parameters, have your load data on hand and use the WEG (Soft-Starter) Dimensioning Software available at WEG’s home page (http://www.weg.net). If you are unable to use the software mentioned above, you can follow some practical concepts described in this chapter.

  • Page 40: Voltage Ramp Starting

    If faults occur during the start, check all the connections from the Soft-Starter to „ the supply network, motor connections, supply network voltage levels, fuses and circuit breakers. SSW-08 | 35...

  • Page 41: Current Limit Starting

    3) Check if the motor rotation direction is an indicated on the pump frame. If not, connect the phase sequence as indicated at P620; Figure 5.5: Direction of rotation of a hydraulic centrifugal pump 36 | SSW-08...
  • Page 42 To prevent this condition, set P105 to a value that as soon it stop it is also disabled; 10)Set P610 and P611 to current and time levels that prevent the hydraulic pump from running without a load. SSW-08 | 37...

  • Page 43: Programming The Control Type In Pump Control

    1) To enter in programming mode, keep the reset key at the SSW-08 front cover pressed during 5 seconds, keeping it also pressed throughout the programming;...
  • Page 44 Therefore the minimum class necessary to start the cold motor is Class 10. Class 5 will trip during starting. NOTE! If the motor must start in the hot condition, class 10 will trip during the second start. In the case a higher thermal class must be set. SSW-08 | 39...
  • Page 45 Remember that this protection has as a standard the Three Phase IP55 Standard WEG Motor, therefore if your motor is different, then do not program the thermal class to its maximum, instead, program it near its minimum thermal class to start.

  • Page 46: Service Factor

    S.F. / I = 25 A x 1.15 / 30 A = 96% MOTOR SSW08 ATTENTION! The increased motor current has direct impact on the maximum thermal class, that protects the motor, even if the S.F. parameter is set. SSW-08 | 41...
  • Page 47 Stall Current / S.F. = 6.6 / 1.15 = 5.74 t(s) 5.74 x In of the motor Figure 5.12: Checking of the maximum thermal class, considering the S.F. Class 20 is the highest class that protects the motor, if the service factor is used. 42 | SSW-08...

  • Page 48: Solution And Troubleshooting

    To restart the Soft-Starter after a fault has occured it must be reset. In general, resetting can be done as follows: Disconnecting and reapplying the AC power (power-on RESET); „ Pressing the “RESET” key in the SSW-08 front panel (RESET key); „ Automatically by the automatic RESET. Enable this function via DIP Switch (auto); „...
  • Page 49 DIx. Flashing time to recover from the starting current. Overcurrent It is only monitored when the SSW-08 is Short-circuit between phases. at full voltage. Momentary motor overload. When the parameters are set with the Motor shaft is locked, rotor blocked.
  • Page 50 Auto-reset. (LED Fault) DIx. Flashes once (LED Ready) Closed When the SSW-08 does not detect Bad contact in the relay cables. By-pass contact voltage difference between the input By-pass contacts are welded. or shorted SCR’s and output at the moment the motor Short-circuit Thyristor.

  • Page 51: Troubleshooting

    Reduce the acceleration ramp time. acceleration Reduce the pedestal voltage setting. NOTE! When contacting WEG for service or technical assistance, please have the following data on hand: Model of the Soft-Starter; „ Serial number, production date and hardware revision present in the identification „...

  • Page 52: Preventive Maintenance

    If necessary, consult the manufacturer. Do not use megometers to test thyristors. Periodic inspections of Soft-Starters SSW-08 and installations are necessary to avoid operating problems due to unfavorable environmental conditions like high temperature, moisture, dust, vibrations or due to the aging of the components.

  • Page 53: Options And Accessories

    Options and Accessories 7. OPTIONS AND ACCESSORIES This chapter describes the optional devices that can be used with Soft-Starter SSW-08. Table 7.1: Optional description Optional Description WEG Part Number Plug-in Local Keypad 10935572 Remote Keypad Kit 10885878 1m SSW-08 - Remote HMI Connection Cable...

  • Page 54: Technical Characteristics

    312 A 365 A 412 A 8.2 NOMINAL POWERS AND CURRENTS FOR STANDARD IP55, IV POLE WEG MOTOR Table 8.2: Powers and currents for WEG motors, room temperature of 55 °C (131 °F) Motor voltage Motor voltage Motor voltage Motor voltage...

  • Page 55: Power Data

    Maximum number of starts per hour 10 (1 every 6 minutes; models from 45 A to 200 A) with optional ventilation Kit Start cycle 3 x In of the SSW-08 during 20 seconds Thyristors (SCRs) Reverse voltage with 1600 V maximum peak Overvoltage category III (UL508/EN61010) 8.4 ELECTRONICS AND PROGRAMMING DATA...

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