35
System with flow switch:
Make the following additional settings:
1. Mark
Go to setting of digital input
with
or
and press
. Now the display
Overview of digital inputs (4.3.7)
appears.
2. Select the digital input where the flow switch is connected with
or
and press
.
3. Mark
Flow switch
with
or
, press
and return with
.
Note:
An open contact indicates low flow.
System with flowmeter:
Make the following additional settings:
1. Mark
Go to setting of analog input
with
or
and
press
. Now the display
Overview of analog inputs (4.3.8)
appears.
2. Select the analog input where the flowmeter is connected and
set up the input for the flowmeter. Return to
Stop function
with .
3. Mark
Min. flow rate
with
or .
4. Set the value with
or
and press
.
Factory setting
10.7.18 Overview of digital inputs (4.3.7)
Fig. 45
Overview of digital inputs
Description
In this menu the digital inputs of the CU 351 can be set. Each
input, except DI1 on CU 351, can be activated and related to a
certain function.
As standard, the Hydro MPC has three digital inputs. If the
Hydro MPC incorporates an IO 351B module (option), the number
of digital inputs is 12.
In the display, all digital inputs are shown so that their physical
position in the Hydro MPC can be identified.
Example
DI1 (IO 351-41), [10]:
For further information on the connection of various digital inputs,
see the wiring diagram supplied with the control panel.
Setting range
The digital input to be set is selected in display
.
Note:
DI1 (CU 351) cannot be selected.
Setting via control panel
1. Mark the
Settings
menu with
.
2. Mark
Secondary functions
with
or
and press
.
3. Mark
Digital inputs
or
and press
.
4. Select the digital input with
or
and press
.
10.7.19 Functions of digital inputs (4.3.7.1 to 4.3.7.12)
Fig. 46
Functions of digital inputs
Description
In the displays 4.3.7.1 to 4.3.7.12, a function can be related to the
digital inputs.
Setting range
It is possible to select one function in each display:
See the relevant sections for further information about the
functions.
Generally a closed contact activates the function selected.
On/off band:
20% for MPC-S & 10% for all other types
Min. flow rate: 10% of the nominal flow rate of one pump
T
M
03
23
59
40
05
DI1:
Digital input no. 1.
(IO 351-41):
IO 351, GENIbus number 41
[10]:
Terminal no. 10
TM
0
3
2
362
4
005
Function
Contact activated
Not used
Min. duty
= Operating mode Min.
Max. duty
= Operating mode Max.
User-defined duty
= Operating mode User-
defined
External fault
= External fault
Dry-running protection
= Water shortage
Flow switch
= Flow rate > Set switch
value
Pressure switch
= Pressure > Set switch
value
Reset of alarm
= Reset alarms
Alternative setpoint 2
= Setpoint 2, selected
Alternative setpoint 3
= Setpoint 3, selected
Alternative setpoint 4
= Setpoint 4, selected
Alternative setpoint 5
= Setpoint 5, selected
Alternative setpoint 6
= Setpoint 6, selected
Alternative setpoint 7
= Setpoint 7, selected
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