Grundfos SMART Digital DDA, Инструкция по установке и эксплуатации

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ngli
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The batch volume (e. g. 80.5 ml) is set in the ’Setup
> Dos. Timer Week’ menu. The minimum dosing time
required for this (e. g. 0:34) is displayed and can be
increased.
In the Operation mode, the total batch volume
(e. g. 80.5 ml) and the remaining batch volume to be
dosed is displayed. During breaks in dosing, the time
(e. g. 43:32) until the next dosing is displayed.
Fig. 30 Weekly timer dosing/break in dosing
6.5 Analog output
Fig. 31 Configure analog output
The analog output of the pump is parametrised in the
’Setup > Analog output’ menu. The following settings
are possible:
* Output signal is based on motor speed and pump
status (target flow).
Wiring diagram see section 4.3 Electrical
connection .
6.6 SlowMode
When the ’SlowMode’ function is enabled, the
pump slows down the suction stroke. The function is
enabled in the
’Setup > SlowMode’ menu and is
used to prevent cavitation in the following cases:
• for dosing media with a high viscosity
• for degassing dosing media
• for long suction lines
• for large suction lift.
In the ’Setup > SlowMode’ menu, the speed of the
suction stroke can be reduced to 50 % or 25 %.
Fig. 32 SlowMode menu
T
M
0
4 1
136
1
1
1
0
T
M
04
1
153 1
1
10
Setting
Description
Analog output signal
Control
variant
FC
M
FC AR
Output
=Input
The analog input signal is
mapped 1:1 to the analog
output (e. g. to control
several pumps using one
signal)
X X X
Actual
flow
Current actual flow
• 0/4 mA = 0 %
• 20 mA = 100 %
see section
6.8.2 Calibration of
pressure sensor
X X* X*
Backpres
sure
Backpressure, measured
in the dosing head
• 0/4 mA = 0 %
• 20 mA = 100 %
see section
6.8 Pressure
monitoring
X X
Bus
control
Enabled by command in
Bus control, see section
6.15 Bus communication
X X X
Operation
80.5
ml
Timer
43:32
Output = Input
Actual flow
Backpressure
Bus control
❑
❑
❑
Analog out
Note
In all modes, the analog output has a
range of 4-20 mA. Exception: Operation
mode 0-20 mA. Here, the analog output
range is 0-20 mA.
Caution
Enabling the 'SlowMode' function
reduces the maximum dosing flow of
the pump to the set percentage value!
T
M
0
4 1
153
1
1
1
0
Off
SlowMode [50 % max.]
SlowMode [25 % max.]
❑
❑
SlowMode