Cable Termination Unit Du line Type DT 01 Fieldbus Installationbus Removes distortion caused by reflections H1-housing For mounting on DIN-rail (EN 50022) No power supply needed Product Description Ordering Key DT 01 Dupline termination unit for reflections from the cable Type: Dupline removing distortion caused by ends. Type no. Type Selection General Specifications Ordering no. Environment Cable termination unit Degree of protection IP 20 Pollution degree 3 (IEC 60664) DT 01 Operating temperature -20 to +50C (-4 to +122F) Storage temperature -50 to +85C (-58 to +185F) No code module required Humidity (non-condensing) 0 to 80% Mechanical resistance Shock 15 G (11 ms) Supply Specifications Vibration 2 G (6 to 55 Hz) Dimensions Rated operational current Typ. 220 A Material Power dissipation 10 mW (seeTechnical Informatio) H1-Housing Weight 45 g Mode of Operation When a generator connected tion at the cable end. In the Note 1: Note 2: to a non-terminated cable case of Dupline the critical In case of branches on the The DT 01 is the only unit emits a square-wave signal, distance between the genera- cable it is only necessary to which can remove reflections the cable ends will always tor and the far cable end is 2 mount a second DT 01 if the and consequently cannot be cause reflections. Depending km and above. Consequently, distance to the nearest DT 01 replaced by other Dupline on distance and frequency, if as a rule of thumb a DT 01 exceeds 1.2 km. In all other modules. the signal can be distorted to termination unit is mounted at cases a second DT 01 should a degree where the informa- the cable end when the dis- not be mounted since it in- tion becomes unreliable. tance to the channel genera- creases the capacity of the However, these reflections tor exceeds 1.2 km, reflec- cable and thereby reduces can easily be removed by tions are avoided. the transmission distance. mounting the correct termina- Specifications are subject to change without notice (28.04.03) 1 Dupline is a registered trademark. A product of the CARLO GAVAZZI Group0.5 km DT 01 Du line Fieldbus Installationbus Wiring Diagrams Example 1 In this example the cable has S two branches, and the dis- 2 km 2 km tance from the channel gener- ator to the cable ends ex- ceeds 1.2 km. Consequently, a DT 01 must be mounted at 6 3 both ends since no DT 01 is mounted within a distance of 1.2 km from the channel gen- Channel Generator erator. S: signal wire Example 2 In this example the cable also A 1 has two branches, and the 2 distance from the channel generator to the far end of the cable exceeds 1.2 km. How- 2 km S ever, in this case it is not nec- essary to mount a DT 01 at point B, because the distance to the nearest DT 01 at point A is shorter than 1.2 km. 6 3 B Channel Generator S: signal wire Dimensions (mm) H1/H2-housing 2 Specifications are subject to change without notice (28.09.99) Dupline is a registered trademark. A product of the CARLO GAVAZZI Group 0.5 km