Predefined Setpoints; Alarm Log; Warning Log; Multi-Pump Setup - Grundfos Hydro Multi-E Series Installation And Operating Instructions Manual

13.8 "Predefined setpoints"

You can set and activate seven predefined setpoints by
combining the input signals to digital inputs 2, 3 and 4. See the
table below.
Set the digital inputs 2, 3 and 4 to "Predefined setpoints" if all
seven predefined setpoints are to be used. You can also set one
or two of the digital inputs to "Predefined setpoints" but this limits
the number of predefined setpoints available.
"Digital inputs"
Setpoint
2 3 4
0 0 0 Normal setpoint or stop
1 0 0 "Predefined setpoint 1"
0 1 0 "Predefined setpoint 2"
1 1 0 "Predefined setpoint 3"
0 0 1 "Predefined setpoint 4"
1 0 1 "Predefined setpoint 5"
0 1 1 "Predefined setpoint 6"
1 1 1 "Predefined setpoint 7"
0: Open contact
1: Closed contact
Example
Figure 55 shows how you can use the digital inputs to set seven
predefined setpoints. Digital input 2 is open and digital inputs 3
and 4 are closed. If you compare with the table above, you can
see that "Predefined setpoint 6" is activated.
Digital input 4
Digital input 3
Digital input 2
Actual
setpoint
Stop
Fig. 55 Principle sketch showing how predefined setpoints
function
If all digital inputs are open, the pump stops or runs at the normal
setpoint. Set the desired action with Grundfos GO or with the
advanced control panel.
Factory setting
See section 29. Factory settings.

13.9 Alarm log

This menu contains a list of logged alarms from the product. The
log shows the name of the alarm, when the alarm occurred and
when it was reset.

13.10 Warning log

This menu contains a list of logged warnings from the product.
The log shows the name of the warning, when the warning
occurred and when it was reset.
30
Setpoint 7
Setpoint 6
7
6
5 Setpoint 5
Setpoint 4
4
Setpoint 3
3
2 Setpoint 2
1
Setpoint 1
0
Normal
setpoint

13.11 "Multi-pump setup"

The multipump function enables the control of two pumps
connected in parallel without the use of external controllers. The
pumps in a multipump system communicate with each other via
the wireless GENIair connection or the wired GENI connection.
You can set a multipump system via the master pump, meaning
the first selected pump.
If two pumps in the system are configured with an outlet-pressure
sensor, they can all function as master pumps and take over the
master pump function if the other should fail. This provides
additional redundancy in the multipump system.
13.11.1 Cascade
Cascade operation is possible with two to four pumps of same
size and type connected in parallel. Each pump requires a
non-return valve in series with the pump.
Hydro Multi-E maintains a constant pressure through
continuously variable adjustment of the speed of the pumps
connected. It adjusts its performance to the demand through
cutting in or out the required number of pumps and through
parallel control of the pumps in operation
13.11.2 Setting up a multipump system
You can set a multipump system in the following ways:
• Grundfos GO and wired pump connection
See step-by-step descriptions below.
Grundfos GO and wired pump connection
1. Power on both pumps.
2. Establish contact to one of the pumps with Grundfos GO.
3. Set the needed analog and digital inputs via Grundfos GO
according to the connected equipment and the required
functionality.
4. Assign a pump name to the pump using Grundfos GO.
5. Disconnect Grundfos GO from the pump.
6. Establish contact to the next pump.
7. Set the needed analog and digital inputs via Grundfos GO
according to the connected equipment and the required
functionality.
8. Do previous steps for the rest of the pumps in the system.
9. Assign a pump name to the pump using Grundfos GO.
10. Select the "Assist" menu and choose "Setup of multi-pump
system".
11. Select the cascade function.
12. Press [>] to continue.
13. Select cable as the communication method to be used
between the two pumps.
14. Press [>] to continue.
15. Press "Select pump 2".
16. Select the pump from the list.
17. Press [>] to continue.
Use the [OK] or
18. Do previous steps for the rest of the pumps in the system.
19. Confirm the setting by pressing [Send].
20. Press [Finish] in the "Setup complete" dialog box.
21. Wait for the green indicator light in the middle of Grundfos Eye
to light up.
button to identify the pump.