The ECPS system designed by tecsis fulfils a broad spectrum of demands.
Increasing tempo and growing transshipment volumes in present-day logistics process call for the maximum safety and availability of handling equipment. This is especially the case for harbour logistics. Besides safety of personal and operational reliability of lifting equipment, the focus is also on reducing costs by minimising standstill periods and expenditure on servicing and reports. The ECPS system designed by the engineering team at tecsis fulfils this very broad spectrum of demands. Its innovative overload safety system has been designed specifically for use on hoisting tackle in harbor logistic systems. By virtue of its high performance electronics, intelligent software and the comprehensive choice of state-of-the-art force transducers, the new ECPS can be quickly and economically adapted to individual customer requirements.
The hardware and software of the evaluation electronics is of fully modular construction, which makes it very easy to adapt to the required functions. It is supplied with the relevant PC software do that it can be configured and put into service. Optionally, the internal Dot matrix display fitted as standard can also be extended by a keypad. This allows it to be put into service without the need for a PC. Through cyclical internal checks and continuous monitoring of signal inputs and safety relays, a high degree of functional reliability is guaranteed.
Fast limit switches (EGS888); eg, for control of an electromechanical snag overload system (SOS). (The tecsis measuring principle thin-film technology also possible in a redundant variant).
Low on space requirements, outstanding in its possibilities, the thin-film sensor is placed directly in the force transmitting path of the transducer, just like a strain gauge. The tensile, compressive and shear stresses that occur in proportion to the force involved are precisely and dependably measured in this way.
Made in Germany: You get affordable prototypes of mass produced quality delivered fast. These as well as the subsequent series are entirely 'Made in Germany'.
The strain-sensitive resistors are deposited onto the sensor body automatically in an automated Physical Vapour Deposition (PVD) process. Even when installation space is minimal, the measuring cell (body phi 7 mm) can still be fitted at the ideal position in the force transducer. Nor does the redundant version require any additional space. And, because the signal is captured in a highly confined space, any effects of geometry are smaller as a consequence.
The functional principle
Elongation is measured via a Wheatstone-bridge circuit consisting of four elongation-sensitive thin film resistors (even the elements to compensate for zero-point temperature dependency and sensitivity are implemented on the sensor). The newest state-of-the-art-development of tecsis consists of redundant sensor, which includes two complete measuring circuits on a diameter of only 7 mm, as well. The typical deviation of both channels caused by interference can almost be avoided. The alignment and subsequent welding-in of the sensors in the force transducer are important manufacturing steps. Once the integrated amplifier electronics is placed into the transducer, assembly is complete and the fully automated calibration process can begin. Force measuring instruments in the range from 1 kN to 1,300 kN are used for this. Analogue and digital industry standard output signals are available for further processing in the user control system.
The advantages of thin-film technology: Very good long-term stability, no creep behaviour, integrated amplifier, and high synchronisation in the redundant variant.
tecsis force transducers with thin-film sensors are perfectly suited for measuring force in guide pulleys and in fork rolling bearings. Their constructional form allows them to be fitted into existing structures as a direct replacement for the retaining bolts. By using a standardised solution framework, the force transducers can be adapted to many different kinds of constructional points and environmental conditions. Depending on the particular application, they fulfill many different kinds of safety requirements, right up to performance level E, according to DIN EN ISO 13849-1. Optionally, two different signal outputs are available via an integrated amplifier analogue standard output signals or CANopen.
Applications are in overload protection systems for harbour cranes, con¡tainer cranes, straddle carriers, heavy-duty forklifts, and reach-stackers.
For further information please contact:
Tecsis Instruments (India) Pvt Ltd,
Tara Tycoon, Tarnaka,
Secunderabad 500 017,
Tel: +91-40-2700 6201,