Proline Promag 51
Wiring
Hauser
35
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).
A0005572
Fig. 30:
Wiring versions for connecting a "reset" key (for resetting errors)
A = Wiring version with external voltage supply (3 to 30 V)
B = Wiring version with the current output as voltage supply (4 to 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
-
+