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5.6
Connecting signal inputs
General information
● The cable glands ② and ③ , each with two openings, are available for up to four signal
● Cable gland ② should be used for signal inputs "In 1" and "In 3".
● Cable gland ③ should be used for signal inputs "In 2" and "In 4".
● When wiring several signal sources (analog current and 24 V digital signal), it must be
Connecting the analog current 0/4 to 20 mA
Connect the analog current line in accordance with the following table:
Current signal
Connecting the 24 V digital signal
Connect the signal line in accordance with the following table:
Digital signal
Connecting the digital signal in line with NAMUR
NOTICE
Polarity
The signal sensor is supplied from the 8.2 V source and the current produced is measured.
Correct polarity must be ensured.
Connect your signal in accordance with the following table:
Digital signal
SITRANS DA400 for oscillating positive displacement pumps
Operating Instructions, 09/2008, A5E00841120-03
inputs "In 1" to "In 4".
ensured that the four inputs relate to a common internal mass. Terminals 56, 66, 76 and
86 (if used) should therefore lead to a central star point in the system.
Terminal symbol
I+
I+
I-
⊥
Terminal symbol
+
DI
-
⊥
Terminal symbol
+
8V
-
I+
In 1
In 2
55
65
56
66
In 1
In 2
57
67
56
66
In 1
In 2
58
68
55
65
Connecting
5.6 Connecting signal inputs
In 3
In 4
75
85
76
86
In 3
In 4
77
87
76
86
In 3
In 4
78
88
75
85
31
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