Grundfos Control MPC Montage- Und Betriebsanleitung Seite 49

8.6.28 Digital inputs (4.3.7)
Digital inputs
Description
In the menu, you can set the digital inputs of CU 352. Each input,
except DI1, can be activated and related to a certain function.
As standard, the system has three digital inputs. If the system
incorporates an IO 351B module (option), the number of digital
inputs is 12.
All digital inputs are shown so that their physical position in the
system can be identified.
Example
DI1 (IO 351-41), [10]:
DI1: Digital input No. 1
(IO 351-41): IO 351, GENIbus number 41
[10]: Terminal No. 10
For further information on the connection of various digital inputs,
see the wiring diagram supplied with the control cabinet.
Setting range
DI1 (CU 352) cannot be selected.
Setting via the operating panel
• Settings > Secondary functions > Digital inputs.
8.6.29 Functions of digital inputs (4.3.7.1)
Functions of digital inputs
Description
A function can be related to the digital inputs.
Setting range
You can select one function in each display:
Function Contact activated
Not used
Min. duty
Max. duty
User-defined duty
External fault
Dry-running protection
Flow switch
Resetting of alarm
Emergency run
Fault, pilot pump
Alternative setpoint 2-7
Reduced operation
Stop pump 1-6
Stop pilot pump
In the display, you can only select pumps defined in the
system.
See the relevant sections for further information about the functions.
Generally, a closed contact activates the function selected.
Setting via the operating panel
• Settings > Secondary functions > Stop function > Go to
setting of digital input.
= Operating mode Min.
= Operating mode Max.
Operating mode User-
=
defined
= External fault
= Water shortage
= Flow
= Alarms are reset
Operating mode
=
Emergency run
= Fault
The setpoint is
=
selected
Activation of Reduced
=
operation
Forces the pump to
=
stop
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