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11.10 Digital inputs
Pump variant
NBE, NBSE, NKE, TPE, TPED
NBE, NBSE, NKE, TPE, TPED Series
2000
Function
Digital input 1, setup
Digital input 2, setup
* See section
5.5.1 Connection terminals, advanced functional
module, FM
300.
To set a digital input, make the settings below.
Function
Select one of these functions:
Not active
•
When set to Not active, the input has no function.
External stop
•
When the input is deactivated, open circuit, the pump stops.
Min. (minimum speed)
•
When the input is activated, the pump runs at the set minimum
speed.
Max. (maximum speed)
•
When the input is activated, the pump runs at the set
maximum speed.
•
"User-defined speed"
When the input is activated, the motor runs at a speed set by
the user.
External fault
•
When the input is activated, a timer is started. If the input is
activated for more than 5 seconds, the pump stops and a fault
is indicated. This function depends on input from external
equipment.
Alarm resetting
•
When the input is activated, a possible fault indication is reset.
Dry running
•
When this function has been 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 stops.
The pump cannot restart as long as the input is activated. This
requires the use of an accessory, such as:
– a pressure switch installed on the inlet side of the pump
– a float switch installed on the inlet side of the pump.
Accumulated flow
•
When this function has been selected, the accumulated flow
can be registered. This requires the use of a flowmeter which
gives a feedback signal as a pulse per defined flow of water.
See section
11.18 "Pulse flowmeter
Predefined setpoint digit 1, applies only to digital input 2.
•
When digital inputs are set to predefined setpoint, the pump
operates according to a setpoint based on the combination of
the activated digital inputs. See section
setpoints".
•
Activate output
When the input is activated, the related digital output is
activated. See section
11.11
done without any changes to pump operation.
•
Local motor stop
When the input is activated, the given pump in a multipump
system stops without affecting the performance of the other
pumps in the system.
Digital inputs
●
●
Terminal*
2 and 6
1 and 9
setup".
11.16.2 "Predefined
Digital inputs/outputs
. This is
The priority of the selected functions in relation to each other
appears from section
14. Priority of
A stop command always has the highest priority.
Activation delay
Select the activation delay, T1.
It is the time between the digital signal and the activation of the
selected function.
Range: 0 to 6000 seconds.
Duration timer mode
Select the mode. See fig. 42.
Not active
•
•
active with interrupt, mode A
•
active without interrupt, mode B
•
active with after-run, mode C.
Select the duration time, T2.
It is the time which, together with the mode, determines how long
the selected function is active.
Range: 0 to 15,000 seconds.
T input > T1 + T2
T input > T1 + T2
Digital
input
T input
T input
Mode A
T1
T2
Mode B
T1
T2
Mode C
T1
Fig. 42 Duration timer function of digital inputs
Factory setting
See section
28. Factory
settings.
settings.
T input < T1 + T2
T input < T1 + T2
T input
T input
T1
T1
T2
T2
T1
T2
31
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