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Grundfos CME User Manual

Grundfos CME
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English (GB)
36
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 is stopped 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 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 is 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 inlet side of
the pump
– a float switch installed on the inlet 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 volume of water. See section
13.20 "Pulse flowmeter" (Pulse flowmeter setup).
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
13.15 Predefined setpoints.
The priority of the selected functions in relation to
each other appears from section 15. Priority of
settings.
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: 0-6000 seconds.
Duration timer mode
Select the mode. See fig. 41.
•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.
Fig. 41 Duration timer function of digital inputs
Factory setting
See section 24. Factory settings.
TM06 4949 3415
T input
T input > T1 + T2 T input < T1 + T2
T1 T2
T1 T2
T1 T1 T2T2
T1
T1
T input
T2
Mode C
Mode B
Mode A
Digital
input
T input > T1 + T2 T input < T1 + T2
T input
T input

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Grundfos CME Specifications

General IconGeneral
Liquid temperature range0 °C to +60 °C
Maximum operating pressure10 bar
SeriesCME
Frequency50/60 Hz
Max Pressure10 bar
Pump TypeCentrifugal
MaterialStainless steel
Applicationspressure boosting, irrigation
Pumped liquidClean water
ApprovalsCE
Max Liquid Temperature60°C
Power Supply1-phase or 3-phase

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