Description Of Functions; Status; Actual Alarms (3.1); Alarm - Grundfos Control DDD Montage- Und Betriebsanleitung

8.3 Description of functions

The description of functions is based on the four main menus of
CU 354:
•

Status

• Operation
•

Alarm

• Settings.
The functions apply to all control variants unless otherwise
stated.

8.4 Status (1)

This display is shown when the power is switched on, and it
appears if the buttons of the operating panel remain untouched
for 15 minutes.
E
I
C
D
Fig. 18 Status
Description
No settings can be made in this menu.
The actual value (process value, PV) of the control parameter,
usually the "Discharge pressure", is shown in the upper right
corner (G) together with the selected setpoint (SP) (H).
The upper half of the display (A) shows a graphic illustration of
the pump system. The selected measuring parameters are shown
with sensor symbol and actual value.
In the middle of the display, an information field (I) will be shown if
any of the following events occurs:
• Limited operation due to standby pump
• Manual proportional-pressure active (during manual
operation)
• External setpoint influence active
• Alternative setpoint active
• Low flow boost active
• Clock program active
• Remote-controlled via Ethernet
• Remote-controlled via GENI (RS-485 / TTL)
• Limited due to reduced operation
• Stopped due to low flow.
The lower display half (B) shows the following:
• the most recent active alarm, if any, and the fault cause with
the fault code in brackets
• system status with current operating mode and control source
• pump status with current operating mode.
If a fault has occurred, a warning or alarm symbol will
be shown in line (C) together with the cause and fault
code, for instance "Overtemperature (64)".
If the fault is related to one of the pumps, a warning or alarm
symbol will also be shown in front of the status line (D) of the
pump in question. At the same time, the pump status indicator (E)
will change colour to either yellow or red as described in the table
below. The warning or alarm symbol will be shown to the right in
the top line of the display (F). As long as a fault is present, this
F
symbol is shown in the top line of all displays.
G
To open a menu line, select the line with [Down] or [Up] and press
H [OK].
The display makes it possible to open status displays showing the
following:
• current alarms
A
• system status
• status of each pump.
Description of pump status indicator (E)
B Pump status indicator
Rotating, green
Permanently green
Rotating, yellow
Permanently yellow
Permanently red

8.4.1 Actual alarms (3.1)

Fig. 19 Actual alarms
Description
The display shows active unreset alarms and warnings.
For further information, see also sections
(3.1) and 8.6.3 Alarm log
Description
Pump running.
Pump ready (not running).
Warning. Pump running.
Warning. Pump ready (not running).
Alarm. Pump stopped.
8.6.2 Actual alarms
(3.2).
17