OIS29 Miniaturized optical smart sensor for hydraulic cylinders ________________ General Description OIS29 is a patented smart optical device, which is usually combined with a hydraulic steering cylinder. The main application is on rough terrain machines, to detect when the wheels are correctly aligned. The alignment occurs when the sensor detects a different refraction index zone, which is marked on the hydraulic cylinder’s rod. The product is based on reflective sensor as input stage, a computing unit (microprocessor device) and an output stage with high side driver, which is able to deliver up to 15mA. The sensor includes a lot of “smart” functions and special algorithms that allow to continuously adapt the device to the wear of the system during the time, improve the life of the system, guarantee the high reliability (MTTF = 127 years) and be able to work in the harsh environment (temperature variations, rod wear, presence of electromagnetic disturbs, presence of humidity, shocks and vibrations). This serie is a miniaturized version of the OIS21C sensor and it is studied to fit in hydraulic cylinders with reduced dimensions.  Small size, -60% of volume compared to OIS21 serie  Smart interface and smart algorithm Steering machines Tilt cylinders Multiple position control Small cylinders control Gearboxes  Integrated, tampered proof  Unsensitive to EM noise  Plug & play, easy installation  MTTF = 127 years  IP67 OIS29 Cable color Brown Black Grey Function Power Supply Ground Output (PNP) † Available only on request Rev. 0; 07.2015 – P16.009.18; 2016/11/21 17.16.00

ABSOLUTE MAXIMUM RATINGS

OIS29 MECHANICAL DIMENSIONS The dimensions are expressed in mm, tolerance ±0.1mm. Figure 1 – OIS29-12AT mechanical dimensions OUTPUT CONFIGURATION

Table 1 - Compliance table OIS29-12AT / Load Dump pulse and Cranking pulse only.

Load dump considerations Load dump means the disconnection of a powered load. It can cause large voltage spikes from the inductive generator(s). In automotive electronics, it refers to the disconnection of the vehicle battery from the alternator while the battery is being charged. Due to such a disconnection of the battery, other loads connected to the alternator see a surge in power line. Load dump may occur as a result of cable corrosion, poor connection or of intentional disconnection with the engine running. The pulse shape and parameters for an alternator with no centralized load dump suppression...