Grundfos DDA 12-10, Инструкция по установке и эксплуатации

Страница: 36 / 52

En
gl
is
h (
G
B)
36
Timer Cycle
(
Relay 2
)
For the "
Relay 2
>
Timer Cycle
" function, set the
following parameters:
•
On
(t
1
)
•
Start delay
(t
2
)
•
Cycle time
(t
3
)
Fig. 38 Diagram
Timer Week
(
Relay 2
)
This function saves up to 16 relay on-times for a
week. The following settings can be made for each
relay switching operation in the "
Relay 2
>
Timer
Week
" menu:
•
Procedure
(No.)
•
On time
(duration)
•
Start time
• Weekdays.
6.16.2
External stop
The pump can be stopped via an external
pulse, e.g. from a control room. When activating the
external stop pulse, the pump switches from the
operating state "Running" into the operating state
"Standby". The corresponding symbol appears in the
"Signal/error display" area of the display.
The contact type is factory-set to normally open
contact (
NO
). In the "
Setup
>
Inputs/Outputs
>
External stop
" menu, the setting can be changed to
normally closed contact (
NC
).
6.16.3
Empty
and
Low level
signals
In order to monitor the filling level in the
tank, a dual-level sensor can be connected to the
pump. The pump responds to the signals as follows:
Both signal inputs are allocated to the normally open
contact (
NO
) in the factory. They can be re-allocated
in the "
Setup
>
Inputs/Outputs
" menu to normally
closed contact (
NC
).
6.17
Basic settings
All settings can be reset to the settings default upon
delivery in the "
Setup
>
Basic settings
" menu.
Selecting "
Save customer settings
" saves the current
configuration to the memory. This can then be
activated using "
Load customer settings
".
The memory always contains the previously saved
configuration. Older memory data is overwritten.
TM
04
1
124
21
1
0
Caution
Frequent disengagement from the
mains voltage, e.g. via a relay, can
result in damage to the pump
electronics and in the breakdown of the
pump. The dosing accuracy is also
reduced as a result of internal start
procedures.
Do not control the pump via the mains
voltage for dosing purposes!
Only use the "
External stop
" function to
start and stop the pump!
t
2
t
3
t
1
t
1
Sensor signal Pump status
Low level
• Display is yellow
•
Flashes
• Pump continues running
Empty
• Display is red
•
Flashes
• Pump stops
Caution
When the tank is filled up again, the
pump restarts automatically!