External Fault Indication; External Analog 0-10 V Controller - Grundfos UPED 80-120 FZ Montageanleitung Und Bedienungsanleitung

7.8 External fault indication

The pump incorporates a signal output for a
potential-free fault signal via terminals 7 and 8.
Functions of signal output
Signal
Description
output
7
The power supply has been
switched off.
8
7
The pump is operating.
8
7
The pump has been set to stop.
8
The pump has stopped due to a
7
fault. Restarting will be attempted.
It may be necessary to restart the
8 pump manually by resetting the
fault indication.
The pump is operating, but it has
been stopped due to a fault.
7
Note: If there is no
differential-pressure or temperature
8
sensor signal, the pump will
continue operating according to the
max. curve.
7
The pump has been set to stop, but
it has been stopped due to a fault.
8
The fault signal output is activated when the pump
registers a fault. The fault signal relay is activated
together with the red indicator light on the pump.
Resetting of fault indications
A fault indication can be reset in one of the following
ways:
• Briefly press or
influence the pump performance set.
• Briefly switch off the power supply to the pump.
• With the R100. See section 8.3 R100.
The fault indication cannot be reset until the cause of
the fault has disappeared.
14
on the pump. This will not

7.9 External analog 0-10 V controller

The pump has an input for an external 0-10 VDC
analog signal transmitter (terminals 5 and 6). Via this
input, the pump can be controlled by an external
controller if the pump has been set to this control
mode:
•
Constant curve.
The external analog signal will set the pump
curve within the range from the min. curve to the
constant curve selected according to the
characteristic in fig. 13.
At an input voltage lower than 0.5 V, the pump will
operate according to the min. curve. The setpoint
cannot be changed.
The setpoint can only be changed when the input
voltage is higher than 0.5 V.
1
H m
Min. curve
0
1 2 3 4 5
Constant curve
Fig. 13
Pos. Description
1 Maximum head/constant curve
2 Head set/constant curve
The min. curve input, terminals 3 and 4,
Note
must be short-circuited.
2
6 7 8 9 10 U V