Gotting HG G-21934, Руководство пользователя

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Components and Operation
HG G-21934
Revision 04 (English), Date: 26.04.2016 8
2.2.2.3 Front Plate Elements
Figure 1
Front plate HG 57400
24V shows that power supply is on
O.K. correct load impedance
Z<Zmin short- circuit or load impedance too low
Z>Zmax cable break or load impedance too high
Frequenz Frequency setting (see Table 2 on page 7)
2.2.2.4 Short-circuit or Cable Break
A low load impedance is indicated by the red LED „Z<Zmin“. Tran-
sitional resistances amongst other things add to the load imped-
ance of a system; therefore it is not guaranteed that a short-circuit
would be indicated. High load impedances are detected as an in-
terruption within the loop and are indicated by the red LED „Z>Z
max“. In the normal load range the green LED „O.K“. is lit. The detection range is de-
pendant upon the chosen outputs and current rate.
Load impedance range when connected to loop end:
For the correct detection of cable break or short-circuit the actual required current and
size of impedance should be known, so that the generator can be set to these require-
ments.
2.2.2.5 Connection Plan for the Generator
LED Short (I = 600 mA) Long (I = 300 mA)
LED Z<Zmin – 0 to 3

LED O.K. 1 to 15

3 to 75

LED Z>Zmax > 15

> 75

Table 3
Load Impedance Ranges of the Generator
Connection Plan (according to DIN 41612, Form C, 64 pins, ac-equipped)
1ac +24 V 25ac Loop Start
2ac 26ac
15ac Loop End Long 31ac Ground
16ac 32ac
20ac Loop End Short
21ac
Table 4
Connection plan generator