Related Manuals for Schrack Technik LAKS Series
Summary of Contents for Schrack Technik LAKS Series
- Page 1 LAKA / LAKS Design Guide LAKA/LAKS SOFT STARTERS DESIGN GUIDE LAKA/LAKS Design Guide V1.0 Schrack Technik GmbH, Seybelgasse 13, 1230 Wien www.schrack.com...
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Page 2: Table Of Contents
Soft Start Application Guide .............. 19 Reduced Voltage Starting ..................19 Types of Soft Start Control ................... 20 Understanding Soft Starter Ratings ..............20 Model Selection ....................21 Typical Applications ....................22 Schrack Technik GmbH, Seybelgasse 13, 1230 Wien www.schrack.com LAKA/LAKS Design Guide V1.0... -
Page 3: Warnings
The symbols used are the following: N.B.!: Indicates something to be noted by the reader Indicates a general warning Indicates a high voltage warning LAKA/LAKS Design Guide V1.0 Schrack Technik GmbH, Seybelgasse 13, 1230 Wien www.schrack.com... -
Page 4: Laka/Laks Overview
SCRs during run. This allows the LAKA/LAKS to be installed in a non- ventilated enclosure without the need for an external bypass contactor. Ordering Type Code Schrack Technik GmbH, Seybelgasse 13, 1230 Wien www.schrack.com LAKA/LAKS Design Guide V1.0... -
Page 5: Ratings
4-6: 400% start current for 6 seconds. 594: 594 seconds between the end of one start and the beginning of the next start (i.e. 6 starts per hour). LAKA/LAKS Design Guide V1.0 Schrack Technik GmbH, Seybelgasse 13, 1230 Wien www.schrack.com... -
Page 6: General Technical Data
Rated short-circuit current .......................... 10 kA Heat Dissipation During Start ..........................3 watts / ampere During Run ............................. < 7 watts Standards Approvals ............................. IEC 60947-4-2 ............................. IEC 60947-4-2 Schrack Technik GmbH, Seybelgasse 13, 1230 Wien www.schrack.com LAKA/LAKS Design Guide V1.0... -
Page 7: Mechanical Installation
Relay Outputs 380 - 440VAC or Thermistor Input N.O. N.O. Stop Start 110 - 240VAC 24 13 Main Contactor 23 24 13 14 N2 N1 A2 A1 (1.46) (1.46) LAKA/LAKS Design Guide V1.0 Schrack Technik GmbH, Seybelgasse 13, 1230 Wien www.schrack.com... -
Page 8: Cable Size
4 Nm N.A. N.A. 2.9 ft-lb 7 mm 3.5 mm 4 Nm N.A. 0.5 Nm max 2.9 ft-lb 4.4 in-lb max 75° C Wire. Use copper conductors only. Schrack Technik GmbH, Seybelgasse 13, 1230 Wien www.schrack.com LAKA/LAKS Design Guide V1.0... -
Page 9: Semiconductor Fuses
18000 170M-1319 180 FM 51200 170M-1321 250 FM 80000 170M-1321 250 FM 97000 170M-1321 250 FM 168000 170M-1322 500 FMM 245000 170M-3022 500 FMM 320000 170M-3022 500 FMM LAKA/LAKS Design Guide V1.0 Schrack Technik GmbH, Seybelgasse 13, 1230 Wien www.schrack.com... -
Page 10: Frequently Asked Questions
It could also be selecting soft starters for different duty cycles. used to signal LAKS "Trip" status to an automation system. Run output: The relay operates on completion of start ramp. Schrack Technik GmbH, Seybelgasse 13, 1230 Wien www.schrack.com LAKA/LAKS Design Guide V1.0... - Page 11 (if used), or by switching the control inputs. To clear a trip via the control inputs, the soft starter requires a closed to open transition on the stop input (N2). LAKA/LAKS Design Guide V1.0 Schrack Technik GmbH, Seybelgasse 13, 1230 Wien www.schrack.com...
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Page 12: Laka
6 A @ 30 VDC resistive / 2 A 400 VAC AC11 I > I > I > Main contactor. 177HA241.10 1/L1 3/L2 5/L3 2/T1 4/T2 6/T3 177HA247.11 Motor 3Ø Control Voltage Schrack Technik GmbH, Seybelgasse 13, 1230 Wien www.schrack.com LAKA/LAKS Design Guide V1.0... -
Page 13: Control Circuits
Suggested Initial Torque Settings Application Initial Torque START Centrifugal Pump Submersible Pump STOP * Screw Compressor Conveyor Crusher Also resets the soft starter. Other applications LAKA/LAKS Design Guide V1.0 Schrack Technik GmbH, Seybelgasse 13, 1230 Wien www.schrack.com... -
Page 14: Indication
Sets the time of the soft stop voltage ramp. The soft stop function extends motor deceleration time by ramping down voltage supplied to the motor when a stop is initiated. Schrack Technik GmbH, Seybelgasse 13, 1230 Wien www.schrack.com LAKA/LAKS Design Guide V1.0... -
Page 15: Laks
6 A @ 30 VDC resistive / 2 A 400 VAC AC11. Main contactor. 177HA241.10 Auxiliary relay function = Trip (see below). START/ STOP Also resets the soft starter. LAKA/LAKS Design Guide V1.0 Schrack Technik GmbH, Seybelgasse 13, 1230 Wien www.schrack.com... -
Page 16: Adjustments
Motor FLC (% LAKS FLC) Value: 50% - 100% LAKS FLC 100% Function: Calibrates the LAKS for the full load current of the motor. Schrack Technik GmbH, Seybelgasse 13, 1230 Wien www.schrack.com LAKA/LAKS Design Guide V1.0... - Page 17 Set the Phase Rotation by turning the switch up (Any Rotation) or down (Forward Only). 177HA268.10 Then set the Auxiliary Relay functionality by turning the switch to the left (Trip) or right (Run). LAKA/LAKS Design Guide V1.0 Schrack Technik GmbH, Seybelgasse 13, 1230 Wien www.schrack.com...
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Page 18: Motor Thermistor
Remove and refit Ensure the Excess Start Time protection accessory module. setting is within the LAKS rated capability. Motor Thermistor 177HA279.10 Motor thermistor cut out value = 2.8 kΩ. Schrack Technik GmbH, Seybelgasse 13, 1230 Wien www.schrack.com LAKA/LAKS Design Guide V1.0... -
Page 19: Soft Start Application Guide
However, they do the load at any point during motor starting, LAKA/LAKS Design Guide V1.0 Schrack Technik GmbH, Seybelgasse 13, 1230 Wien www.schrack.com... -
Page 20: Types Of Soft Start Control
• Current controlled systems Motor Current, Start Current, Start Duration, Number of Starts Per Hour, Off Time. The full rating of a particular soft start model must account for all Schrack Technik GmbH, Seybelgasse 13, 1230 Wien www.schrack.com LAKA/LAKS Design Guide V1.0... -
Page 21: Model Selection
Normal Dryer Heavy 177HA281.10 Mill Heavy Palletiser Heavy In summary, a soft starter has many current Separator Heavy ratings. These current ratings are dependent on the Slicer Normal LAKA/LAKS Design Guide V1.0 Schrack Technik GmbH, Seybelgasse 13, 1230 Wien www.schrack.com... -
Page 22: Typical Applications
Phase rotation protection • direction. prevents damage from reverse Mixers Gentle rotation during start-up • pump rotations. reduces mechanical stress. Reduced starting current. • Schrack Technik GmbH, Seybelgasse 13, 1230 Wien www.schrack.com LAKA/LAKS Design Guide V1.0...
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