25
English (US)
Digital input 1 and 2, Function
The digital inputs can be set to various functions.
Select one of these functions:
• Not active
When set to "Not active", the input has no function.
• External fault
When the input is activated, a timer will be started. If the input
is activated for more than 5 seconds, the pump will be stopped
and a fault will be indicated. If the connection is disconnected
for more than 5 seconds, the fault condition will cease and the
pump will start if automatic restarting has been selected via
PC Tool.
• Alarm resetting
When the input is activated, a possible fault indication will be
reset.
• External stop
When the input is deactivated (open circuit), the pump will
stop.
• Max. (max. speed)
When the input is activated, the pump will run at the set max.
speed.
• Min. (min. speed)
When the input is activated, the pump will run at the set min.
speed.
• Flow switch
When this function is selected, the stop function will use a flow
switch to detect low-flow stop. See section Low-flow stop
function, page 26.
• Dry running
When this function is selected, lack of inlet pressure or water
shortage can be detected.
When lack of inlet pressure or water shortage (dry running) is
detected, the pump will be stopped. The pump cannot restart
as long as the input is activated.
This requires the use of an accessory, such as these:
– a pressure switch installed on the suction side of the pump
– a float switch installed on the suction side of the pump
• Accumulated flow
When this function is selected, the accumulated flow can be
registered. This requires the use of a flowmeter which can give
a feedback signal as a pulse per defined flow of water. Further
setting of this function must be made via PC Tool.
• Predefined setpoint, digital1 (applies only to digital input
2)
When digital inputs are set to predefined setpoint, the pump
will operate according to a setpoint based on the combination
of the activated digital inputs. Further setting of this function
must be made via PC Tool.
The priority of the selected functions in relation to each other
appears from section 13. Priority of settings.
A stop command will always have the highest priority.
The number of available displays depends on the pump type. See
below.
Digital input/output 3 and 4, State
The digital input/output 3 and 4 can be set to act as digital input
or digital output.
Possible settings:
• Digital input
• Digital output.
The number of available displays depends on the pump type. See
below.
Function (terminal) CME
CRE, CRIE,
CRNE, CRKE,
SPKE, MTRE
Digital input 1, Function (2 and 6) ●●
Digital input 2, Function (1 and 9) - ●
Function (terminal) CME
CRE, CRIE,
CRNE, CRKE,
SPKE, MTRE
Digital input/output 3, State (10
and 6)
●●
Digital input/output 4, State (11
and 18)
- ●
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