Signal Relay; Fault Indication - Grundfos MAGNA Manual Del Usuario

Note:
• Terminals 7 and 10 of the max. curve input must not be connected.
• Terminals 7 and 9 of the min. curve input must be connected.
• Terminals 7 and 8 of the start/stop input must be connected.
See connection examples on pages 376 to 379.
H
set
Fig. 3 Example of analog control voltage with the pump in constant-pres-
sure control mode
Note: As will appear from fig. 3, the control range will be limited if the set-
point set, H , is reduced.
set

7. Signal relay

The function of the signal relay can be set with the R100.
Possible functions:
• Fault
• Ready
• Operation.

7.1 Fault indication

The signal relay is activated in case of
• Pump blocked
• Internal fault
• Undervoltage.
See section 7.4 Functional diagram.
When the fault disappears, the signal relay is deactivated. The fault cause is
stored in the pump alarm log. The latest five faults can be called up with the
R100.
Note: In case of a fault, the red indicator light on the control panel is on.
See installation and operating instructions for GRUNDFOS MAGNA 25-60,
25-100, 32-60, 32-100, 40-100(D), 50-100.
10
U
V
10
8,6
7,2
H
set
5,8
4,3
3,0
1,5
0,5
0
U
V
10
7,5
5,0
2,5
0,5
0