Grundfos DME 940 User Manual

16
English (US)
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.
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.
Note
Connect the alarm relay only to voltages
which comply with the SELV requirements
in EN/IEC 60 335-1.
Condition Green LED Red LED Display Alarm output
Pump running On Off Normal indication
Set to stop Flashing Off Normal indication
Pump fault Off On EEPROM
Supply failure Off Off Off
Pump running, low
chemical level
1
On On LOW
Empty tank
1
Off On EMPTY
Analog signal
< 2 mA
Off On NO mA
The pump is running,
but the dosed quantity
is too small according
to the signal from the
dosing monitor
2
On On NO FLOW
Overheating Off On MAX. TEMP.
Internal
communication fault
Off On INT. COM.
Internal Hall fault
3
Off On HALL
Diaphragm leakage
4
Off On LEAKAGE
Maximum pressure
exceeded
4
Off
5
On OVERLOAD
1 32
NC NO C
1 32
NC NO C
1
2 3
NC NO C
1 32
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

Grundfos DME 940 Specifications

General

Brand	Grundfos
Model	DME 940
Category	Water Pump
Language	English