Setting By Means Of Pc Tool E-Products; Priority Of Settings; External Control Signals; Digital Inputs - Grundfos CUE Series Installation And Operating Instructions Manual

10.7.21 Ramps (3.24)
Set the time for each of the two ramps, ramp-up and ramp-down:
• Factory setting:
Depending on power size.
• The range of the ramp parameter:
1-3600 s.
The ramp-up time is the acceleration time from 0 min
rated motor speed. Choose a ramp-up time such that the output
current does not exceed the maximum current limit for the CUE.
The ramp-down time is the deceleration time from rated motor
-1
speed to 0 min . Choose a ramp-down time such that no
overvoltage arises and such that the generated current does not
exceed the maximum current limit for the CUE.
Speed
Rated
Minimum
Initial ramp
Ramp-up
Fig. 43 Ramp-up and ramp-down, display 3.24

11. Setting by means of PC Tool E-products

Special setup requirements differing from the settings available
via the CUE require the use of Grundfos PC Tool E-products. This
again requires the assistance of a Grundfos service technician or
engineer. Contact your local Grundfos company for more
information.
30

12. Priority of settings

The CUE can be controlled in various ways at the same time. If
two or more operating modes are active at the same time, the
operating mode with the highest priority will be in force.
12.0.1 Control without bus signal, local operating mode
Priority
1
2
3
-1
to the
4
5
6
Example: If an external signal has activated the operating mode
Max., it will only be possible to stop the pump.
12.0.2 Control with bus signal, remote-controlled operating
Priority CUE menu
1
2
3
4
Time
5
6
Final ramp
Example: If the bus signal has activated the operating mode
Max., it will only be possible to stop the pump.
Ramp-down

13. External control signals

13.1 Digital inputs

The overview shows functions in connection with closed contact.
Terminal Type
18
19
32
33
The same function must not be selected for more than one input.
See fig. 17.
The on/off button has the highest priority. In "off"
On/ On/
condition, pump operation is not possible.
Off
CUE menu
Stop
Max.
Min.
Normal
mode
External signal Bus signal
Stop
Max.
Stop
Function
DI 1 • Start/stop of pump
• Min. (min. curve)
• Max. (max. curve)
• Ext. fault (external fault)
DI 2 • Flow switch
• Alarm reset
• Dry running (from external sensor)
• Not active.
• Min. (min. curve)
• Max. (max. curve)
• Ext. fault (external fault)
DI 3 • Flow switch
• Alarm reset
• Dry running (from external sensor)
• Not active.
• Min. (min. curve)
• Max. (max. curve)
• Ext. fault (external fault)
• Flow switch
DI 4
• Alarm reset
• Dry running (from external sensor)
• Accumulated flow (pulse flow)
• Not active.
External signal
Stop
Max.
Min.
Normal
Stop
Max.
Min.
Normal