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Itowa LS2 User Manual

Load limiter
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USER MANUAL
LOAD LIMITER
VA001001

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Summary of Contents for Itowa LS2

  • Page 1 USER MANUAL LOAD LIMITER VA001001...
  • Page 3 ANY REPRODUCTION, EITHER COMPLETE OR IN PART, OF THIS MANUAL IS STRICTLY PROHIBITED UNLESS ITOWA HAS GIVEN ITS WRITTEN CONSENT OTHERWISE, ITOWA RESERVES THE RIGHT TO INITIATE ALL APPROPRIATE ACTIONS AS ESTABLISHED IN LAW ITOWA RESERVES THE RIGHT TO CHANGE THIS MANUAL WITHOUT PRIOR NOTICE. MALIMLS2GB REV 0 07/07/15...

  • Page 5: Table Of Contents

    TABLE OF CONTENTS 1. INTRODUCTION 2. LS2 LOAD LIMITER OPERATING 2.1. OPERATING IN MODE ONE 2.2. OPERATING IN MODE TWO 3. ASSEMBLY OF LS2 LOAD LIMITER 3.1. CONNECTION OF CHARGING CELL 3.2. POWER SUPPLY 3.3. RELAY 1 CONNECTION 3.4. REALY 2 CONNECTION 4.

  • Page 7: Introduction

    USER MANUAL 1. INTRODUCTION LS2 is a high-precision and safety load limiter preventing accidents and protecting overload breakdowns in overhead cranes and hoists. It can also be applied to lifts, weight lifters, rope tensioning systems and in general to any system or installation where a wire rope is subjected to traction and want to limit the maximum tension.

  • Page 9: Ls2 Load Limiter Operating

    LOAD LIMITER USER MANUAL 2. LS2 LOAD LIMITER OPERATING The load limiter, by design, is intrinsically safe, that is, in case of failure or disconnection of the strain gauge wire, it will stop all working operations. The limiter circuit have 2 relays able to cut a current of 16 A at 230Vac.

  • Page 10: Operating In Mode Two

    LOAD LIMITER USER MANUAL When the load value drops below the programmed value in the relay 2 (point of disconnection of relay 2), it will deactivate impeding the dropping operation. It will reactivate when the value of the load exceeds the set value at the point of connection of the relay 2 NOTE: THE VALUE PROGRAMMED IN CONNECTION POINT MUST ALWAYS BE HIGHER THAN THE ONE PROGRAMMED IN THE DISCONNECTION POINT.

  • Page 11: Assembly Of Ls2 Load Limiter

    3. ASSEMBLY OF LS2 LOAD LIMITER Connection of the LS2 limiter is extremely easy, following the detailed instructions on the diagrams Fig. 1 & The load limiter can be connected to a hoist in various ways, in Fig.2, diagrams A,B,C,D are described the...
  • Page 12 LOAD LIMITER USER MANUAL COMMUNICATION VA001000 Fig. 3.1. Load limiter connections.
  • Page 13 LOAD LIMITER USER MANUAL DOWN 2nd SPEED UP Fig. 3.2. Load limiter connection modes.

  • Page 14: Connection Of Charging Cell

    LOAD LIMITER USER MANUAL 3.1. CONNECTION OF CHARGING CELL Connect the load limiter to the charging cell or cells, as in Fig. 3.1, to the connector C5: (The colours in the brackets correspond to cells with 4 cables) CELL 1, (CELL 2, CELL 3, CELL 4) * + Vm GREEN (WHITE) - Vm...

  • Page 15: Ls2 Load Limiter Setting

    LOAD LIMITER USER MANUAL 4. LS2 LOAD LIMITER SETTING The load limiter is pre-adjusted in the factory with the values supplied by the customer. However, these values can be changed at any moment in the programming terminal. If you don’t have this terminal, you can make the adjustment through the potentiometer P6 as you can see in Fig.

  • Page 17: Recycling

    LOAD LIMITER USER MANUAL 5. RECYCLING INFORMATION FOR THE PROPER MANAGEMENT OF REFUSE ELECTRIC AND ELECTRONIC DEVICES (RAEE) At the end of the lifetime of the system, it should not be mixed with general refuse. It can be delivered without any cost, in specific collection centres, run by local authorities or dealers providing this service.

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