Alarm Output And Indicator Lights - Grundfos DME Serie Instrucciones De Instalación Y Funcionamiento

6.6 Alarm output and indicator lights

The green and red indicator lights on the pump are
used for operating and fault indication.
In control variant "AR", the pump can activate an
external alarm signal by means of a built-in alarm
relay which must only be connected to a safety extra
low voltage (SELV) connection.
Condition
Pump running
Set to stop
Pump fault
Supply failure
Pump running, low
1
chemical level
1
Empty tank
Analog signal
< 2 mA
The pump is running,
but the dosed quantity
is too small according
to the signal from the
2
dosing monitor
Overheating
Internal
communication fault
3
Internal Hall fault
4
Diaphragm leakage
Maximum pressure
4
exceeded
16
Green LED Red LED
On
Flashing
Off
Off
On
Off
Off
On
Off
Off
Off
Off
5
Off
Connect the alarm relay only to
Note
voltages which comply with the SELV
requirements in EN/IEC 60 335-1.
The alarm signal is activated by means of an internal
potential-free contact.
The functions of the indicator lights and the built-in
alarm relay appear from the table below.
Display
Off Normal indication
Off Normal indication
On EEPROM
Off Off
On LOW
On EMPTY
On NO mA
On NO FLOW
On MAX. TEMP.
On INT. COM.
On HALL
On LEAKAGE
On OVERLOAD
Alarm output
1 2 3
NC NO C
1 2 3
NC NO C
1 2 3
NC NO C
1 2 3
NC NO C
1 2 3
NC NO C
1 2 3
NC NO C
1 2 3
NC NO C
1 2 3
NC NO C
1 2 3
NC NO C
1 2 3
NC NO C
1 2 3
NC NO C
1 2 3
NC NO C
1 2 3
NC NO C