Endress+Hauser Proline Promag 51, Operating Instructions Manual

Page: 45 / 124

Proline Promag 51 4 Wiring
Hauser 45
4.2.3 Connecting a “reset key” (for error messages)
In custody transfer mode, error messages occurring during operation must be reset or confirmed
manually via the status input (auxiliary input) using a voltage pulse, e.g. via external switches or
reset buttons provided for this purpose.
The power is supplied either by means of an external power source or the current output (Fig. 31).
F06-xxxxxxxx-04-xx-xx-xx-011
Fig. 31: Wiring versions for connecting a “reset” key (for resetting errors)
A = Wiring version with an external voltage supply (3...30 V)
B = Wiring version with the current output as voltage supply (4...20 mA)
Terminal No. 20 / 21 = Status input
Terminal No. 26 / 27 = Current output
20
A
B
21
3...30 V
20
21
26
27
+
-
+
+
-
-
+
-
Esc
E - +
Esc
E
-
+