E
ngli
sh (
G
B)
22
6.4 Operation modes
Six different operation modes can be set in the
’Setup > Operation mode’
menu.
•
Manual
, see section 6.4.1
•
Pulse
, see section 6.4.2
•
Analog 0 - 20 mA
, see section 6.4.3
•
Analog 4 - 20 mA
, see section 6.4.3
•
Batch
, see section 6.4.4
•
Dosing
timer, cycle
, see section 6.4.5
•
Dosing timer, week
, see section 6.4.6
6.4.1 Manual
In this operation mode, the pump constantly
doses the dosing flow set with the click wheel.
The dosing flow is set in l/h or ml/h. The pump
automatically switches between the units.
Alternatively, the display can be reset to US units
(gph).
Fig. 15
Manual
mode
The setting range depends on the pump type:
* When the SlowMode function is active, the maximum
dosing flow is reduced, see section
.
6.4.2 Pulse
In this operation mode, the pump doses the
set dosing volume for each incoming (potential-free)
pulse, e. g. from a water meter. There is no direct
connection between incoming pulses and dosing
strokes. The pump automatically calculates the
optimum stroke frequency for dosing the set volume
per pulse.
The calculation is based on:
•
the frequency of external pulses
•
the set dosing volume/pulse.
Fig. 16
Pulse
operation mode
The dosing volume per pulse is set in ml/pulse using
the click wheel. The setting range for the dosing
volume depends on the pump type:
The frequencyof incoming pulses is multiplied by the
set dosing volume. If the pump receives more pulses
than it can process at the maximum dosing flow, it
runs at the maximum stroke frequency in continuous
operation. Excess pulses will be ignored if the
memory function is not enabled.
Memory function
When the
’Setup > Pulse memory’
function is
enabled, up to 65,000 unprocessed pulses can be
saved for subsequent processing.
T
M
04 1
125
1
1
10
Type
Setting range*
l/h
gph
DDA 7.5 - 16
0.0025 - 7.5
0.0007 - 2.0
DDA 12-10
0.012 - 12
0.0031 - 3.1
DDA 17-7
0.017 - 17
0.0045 - 4.5
DDA 30-4
0.03 - 30
0.0080 - 8.0
Operation
3.40
l/h
Manual
3.40l/h
T
M
04 1
1
26 1
1
10
Type
Setting range [ml/pulse]
DDA 7.5 - 16
0.0013 - 12.8
DDA 12-10
0.0026 - 25.8
DDA 17-7
0.0027 - 26.8
DDA 30-4
0.0058 - 58.4
Note
The contents of the memory will be
deleted when:
– Switching off the power supply
– By switching the operating mode
– Interruption (e. g. alarm,
external stop).
Operation
0.040
ml/
Pulse
3.40l/h
Summary of Contents for SMART Digital DDA
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