Grundfos DDI 209, Инструкция по установке и эксплуатации

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4.5 Weight
4.6 Materials
Pump housing material
Pump and control unit housing: s PS FR GF 22
(glass-fibre-reinforced polystyrene).
Pressure sensor (Flow Monitor)
Sensor: Aluminium oxide Al
2
O
3
(96 %).
O-rings: FKM, EPDM or PTFE.
4.7 Control unit
Functions of pumps with control unit
• "continuous operation" button for function test
and dosing head deaeration
• memory function (stores a maximum of
65,000 pulses)
• two-stage tank-empty signal (e.g. via Grundfos
tank-empty sensor)
• stroke signal/pre-empty signal (adjustable)
• dosing controller function (only with sensor –
optional)
• diaphragm leakage detection (only with sensor –
optional)
• access-code-protected settings
• remote on/off
• Hall sensor (for motor monitoring)
• calibration (adjust the pump to local operating
conditions)
• dosing capacity display (can be reset)
• operating hours counter (cannot be reset)
• interface: PROFIBUS (optional).
Operating modes:
•
manual
input/display of the dosing flow in l/h or gal/h.
Quasi continuous dosing (short suction stroke,
dosing stroke as long as possible).
• contact signal control
input/display in ml/contact, most constant dosing
• current signal control 0-20 mA / 4-20 mA
Adjustment of volumetric flow proportional to the
current signal (displayed in l/h).
Weighting of current input/output.
• batch dosing
setting the dosing capacity and dosing flow per
batch triggered manually or by an external
contact signal
• batch dosing with timer functions
– setting the dosing capacity and dosing flow per
batch
– setting thestart time for first batch
– setting the repeat time for subsequent batches.
• slow mode (for viscous media)
long suction stroke.
Inputs and outputs
4.7.1 Interface (optional)
• PROFIBUS.
Pump type Dosing head material Weight [kg]
DDI 0.4-10 - DDI 2.5-10 PVC, PP, PVDF 2.3
DDI 0.4-10 - DDI 2.5-10 Stainless steel, DIN 1.4571 3.5
DDI 5.5-10 PVC, PP, PVDF 2.4
DDI 5.5-10 Stainless steel, DIN 1.4571 3.6
DDI 13.8-4 - DDI 20-3 PVC, PP, PVDF 2.6
DDI 13.8-4 - DDI 20-3 Stainless steel, DIN 1.4571 3.6
Warning
Observe the manufacturer's safety
instructions when handling chemicals!
Caution
The resistance of the parts that come
into contact with the media depends on
the media, media temperature and
operating pressure. Ensure that parts
in contact with the medium are
chemically resistant to the dosing
medium under operating conditions!
Note
Further information on resistance with
regard to the media, media temperature
and operating pressure is available on
request.
Inputs
Contact signal
Maximum load: 12 V, 5 mA
Minimum pulse length: 10 ms
Minimum pause time: 20 ms
Current 0-20 mA Maximum load: 22

Remote on/off Maximum load: 12 V, 5 mA
Tank-empty signal Maximum load: 12 V, 5 mA
Dosing controller and diaphragm leakage sensor
Outputs
Current 0-20 mA Maximum load: 350

Error signal
Maximum ohmic load:
50 VDC / 75 VAC, 0.5 A
Stroke signal Contact time/stroke: 200 ms
Pre-empty signal
Maximum ohmic load:
50 VDC / 75 VAC, 0.5 A