En
gl
is
h (
G
B)
18
5.6 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
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
3
2
NC NO C
1
3
2
NC NO C
1 2
3
NC NO C
1
3
2
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