18
10.3 Description of functions
The description of functions is based on the four main menus of
the CU 351 control unit:
Status
,
Operation
,
Alarm
and
Settings
.
The functions apply to all control variants unless otherwise
stated.
10.4 Status
The first status display is shown below. This display is shown
when the Hydro MPC is switched on, and it appears when the
buttons of the control panel have not been touched for 15
minutes.
Fig. 8
Status menu
Description
No settings can be made in this menu.
The upper half of the display (A) shows a graphic illustration of
the Hydro MPC booster set and part of the system. The selected
measuring parameters are shown with sensor symbol and current
value.
The current value of the control parameter, usually the discharge
pressure, is shown in large print.
The lower display half (B) shows
•
the latest current alarm, if any, and the fault cause together
with the fault code in brackets
•
system status with current operating mode and current value
of the control parameter
•
pump status with current operating mode and speed as per-
centage (%).
If the fault is related to one of the pumps, the symbol
will also
be shown in front of the status line (D) of the pump in question. At
the same time the symbol
will be flashing instead of the pump
symbol (E). The symbol
will be shown to the right in the top
line of the display (F). As long as a fault is present, this symbol
will be shown in the top line of all displays.
To open a menu line, mark the line with
or
and press
.
The display makes it possible to open status displays showing
•
current alarms
•
system status
•
status of each pump.
10.4.1 Current alarms (3.1)
Fig. 9
Current alarms
Description
In this display, current unreset alarms are shown.
For further information, see
and
10.4.2 System status (1.2)
Fig. 10
System status
Description
This display shows the current operational state of the
Hydro MPC booster set. It is possible to go to subdisplays
showing details.
The display makes it possible to open specific displays about
•
operating mode
•
setpoint
•
setpoint influence
•
measuring values.
To open a menu line, mark the line with
or
and press
.
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Note
If a fault has occurred, the symbol
will be
shown in the alarm line (C) together with the
cause and alarm code, for instance overload (48).
A
B
C
D
E
F
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