Grundfos DDC Data Booklet

Functions
12
SMART Digital S
3
Pulse-based batch control
Applies to DDA
The set quantity is dosed in batches within the set
dosing time (t
1
). A batch is dosed every time the pump
receives an external pulse. If the pump receives new
pulses before a batch is completed, these pulses will
be ignored. In the event of interrupts such as external
stop or alarm, incoming pulses will also be ignored.
After ending of the interrupts, a new batch will be
dosed with the next incoming pulse.
Fig. 12 Pulse-based batch control
Setting range
* Due to the digital motor control, down to 1/8 of the dosing volume
can be dosed.
Dosing timer cycle
Applies to DDA
After a start delay (t
2
) the set batch volume is
repeatedly dosed in the set cycle time (t
3
). The dosing
time (t
1
) can be adjusted. Batch dosing is stopped
during any interrupt, e.g. power supply failure or
external stop while the time continues running in the
background (real-time clock). After ending of the
interrupt, batch dosing proceeds according to the
current status in the timeline.
Fig. 13 Dosing timer cycle
Setting range
The batch volume setting range corresponds to the
pulse-based batch control setting range.
Dosing timer week
Applies to DDA
The integrated real-time clock features also batch
dosing based on a weekly period. There is a maximum
of 16 procedures per week. Each dosing procedure
consists of:
• Batch volume
• Dosing time
• Start time
• 1 to 7 weekdays (Monday to Sunday).
In case several procedures are overlapping, the
procedure with the highest flow rate has the highest
priority. Batch dosing is stopped during any interrupt,
e.g. power supply failure or external stop, while the
time continues running in the background (real-time
clock). After ending of the interrupt, batch dosing
proceeds according to the current status in the
timeline.
Fig. 14 Dosing timer week (example with 4 procedures)
Setting range
The batch volume setting range corresponds to the
pulse-based batch control setting range.
TM04 1578 2010
Pump type
Setting range
From
[ml/batch]
To [l/batch] Resolution [ml]*
DDA 7.5-16 0.74 999 0.09
DDA 12-10 1.45 999 0.18
DDA 17-7 1.55 999 0.19
DDA 30-4 3.10 999 0.39
TM04 1577 1410
Batch volume
Pulse Pulse
t
1
t
1
Batch volume
t
1
t
1
t
3
t
2
TM04 1576 1410
0:00
6:00
12:00
18:00
0:00
33333
3
3
22
1
4
4
11 1
1
Mo Tu We Th Fr Sa Su

Grundfos DDC Specifications

General

Brand	Grundfos
Model	DDC
Category	Water Pump
Language	English