Grundfos DDC Data Booklet

Functions
11
SMART Digital S
3
Operation modes
Manual control
The pump ensures constant dosing according to
the quantity set in l/h or ml/h or gph by means of the
click wheel. The pump automatically changes between
the measuring units.
Setting range
* When the SlowMode function is enabled the max. flow is reduced
(see page 13)
Pulse control
The pump doses in proportion to an external
potential-free pulse signal, for example from a water
meter. There is no direct relation between pulses and
dosing strokes. The pump automatically calculates its
optimal speed to ensure that the required quantity is
dosed for each incoming pulse.
Applies to DDA and DDC
The quantity to be dosed is set in ml/pulse. The pump
adjusts its speed according to two factors:
• the frequency of external pulses
• the set quantity per pulse.
Setting range
The frequency of external pulses is multiplied by the
set quantity. If the product exceeds the maximum flow
of the pump, a maximum of 65,000 pulses can be
stored for later processing with the Memory pulse
function, when activated.
Applies to DDE-PR, DDE-P control variant
The dosing quantity per pulse is adjusted with the
adjustment knob according to the scale from 0.1 to
100 % of the stroke volume. The pump adjusts its
speed according to two factors:
• the frequency of external pulses
• the set percentage of stroke volume.
Setting range, DDE-PR, DDE-P
Analog 0/4-20 mA control
Applies to DDA and DDC-AR control variant
The pump ensures dosing according to an external
analog signal. The dosed capacity is proportional to
the input value in mA.
Fig. 10 0/4-20 mA control
Applies to DDA
With the analog scaling function, the curve can be
individually drawn between two arbitrary points: l
1
/Q
1
and l
2
/Q
2
.
Fig. 11 Analog scaling
Pump type
Setting range*
From [l/h] To [l/h]
DDA 7.5-16 0.0025 7.5
DDA 12-10 0.0120 12.0
DDA 17-7 0.0170 17.0
DDA 30-4 0.0300 30.0
DDC 6-10 0.0060 6.0
DDC 9-7 0.0090 9.0
DDC 15-4 0.0150 15.0
DDE 6-10 0.0060 6.0
DDE 15-4 0.0150 15.0
Pump type Setting range [ml/pulse]
DDA 7.5-16 0.0015 - 14.9
DDA 12-10 0.0029 - 29.0
DDA 17-7 0.0031 - 31.0
DDA 30-4 0.0062 - 62.0
DDC 6-10 0.0016 - 16.2
DDC 9-7 0.0017 - 16.8
DDC 15-4 0.0032 - 31.6
Pump type Setting range [ml/pulse]
DDE 6-10 0.0008 - 0.81
DDE 15-4 0.0016 - 1.58
Operation mode Input signal Dosing capacity
4-20
≤ 4.1 mA 0 %
≥ 19.8 mA 100 %
0-20
≤ 0.1 mA 0 %
≥ 19.8 mA 100 %
TM04 1574 1410TM04 1575 1410
0
Q [%]
0 - 20 mA
4 - 20 mA
[mA]
4
2081216
100
80
0
60
40
20
Dosing capacity
Input signal
0
Q [%]
[mA]
4 2081216
100
80
0
60
40
20
I / Q
1 1
I / Q
2 2
I ' / Q '
1 1
I ' / Q '
2 2
Dosing capacity
Input signal

Grundfos DDC Specifications

General

Brand	Grundfos
Model	DDC
Category	Water Pump
Language	English