External Fault Indications; External Analog 0-10 V Controller - Grundfos UPED 50-12 Montage- Und Betriebsanleitung

6.8 External fault indications

The pump incorporates a fault signal output for a
potential-free fault signal via terminals 2 and 3.
The signal output of both the master pump and the
slave pump can be used.
• The function of the master pump signal output
applies to both the master pump and the slave
pump.
• The function of the slave pump signal output
applies only to the slave pump.
Functions of signal output:
Signal output Description
The electricity supply has been
switched off.
1 2 3
NC NO C
The pump is operating.
1 2 3
NC NO C
The pump has been set to stop.
1 2 3
NC NO C
The pump has stopped because
of a fault. Restarting will be at-
tempted. (It may be necessary to
1 2 3
restart the pump manually by
NC NO C
resetting the fault indication.)
The pump is operating, but it has
been stopped because of a fault.
Note: If there is no differential
pressure or temperature sensor
1 2 3
signal, the pump will continue
NC NO C
operating according to the max.
curve.
The pump has been set to stop,
but it has been stopped because
of a fault.
1 2 3
NC NO C
Resetting of fault indications:
A fault indication can be reset in one of the following
ways:
• Briefly press "+" or "–" on the pump. This will not
influence the pump performance set.
• Briefly switch off the electricity supply to the
pump.
• By means of the R100, see section 7.3 R100.
The fault indication cannot be reset until the cause of
the fault has disappeared.
134

6.9 External analog 0-10 V controller

The pump has an input for an external 0-10 VDC
analog signal transmitter (terminals 11 and 12 in
master pump). Via this input, the pump can be con-
trolled by an external controller if the pump has been
set to one of the following control modes:
• Constant curve.
The external analog signal will set the pump curve
within the range from the min. curve to the con-
stant curve selected according to the characteris-
tic in fig. 12.
• Pressure control.
The external analog signal will control the setpoint
for the pump head between the setpoint corre-
sponding to the min. curve and the setpoint
selected according to the characteristic in fig. 12.
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.
Head set/constant curve
Max. head/constant curve
H m
Min.
curve
0 1 2 3 4 5
Fig. 12
Note:
• The max. curve input, terminals 7 and 10, must be
open.
• The min. curve input, terminals 7 and 9, must be
closed.
6 7 8 9 10 U V