KSB PumpDrive 2 Eco, Application Manual

Page: 17 / 50

Version 1.4
Application Guide PumpDrive 2 Eco
2016-10-20
2016-11-11 PDrv2-Eco_Application_Guide_rev_1_4.docx
Page 16 of 48
16
17
DO
GND
16
17
16
17 GND
DI-EN
+24V
GND
DI3
DI2
DI1
+24V
DICOM
AO-GND
AO
AIN2
NO
+24V
GND
COM
+24V
B1
B2
B3
B4
B5
B6
B7
B8
B9
B10
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
GND
GND
AIN1
+24V
18
+24V
DI
18
11
DO
11 11
2.2.5 Closed loop control: Sensorless differential pressure control
A constant differential pressure of 4 bar is needed without using a sensor. The set point is given by the display. The procedure is based on
the characteristic curves of the pump. Steep power curves are conducive to high process accuracy. The process is suitable to a limited
extent if sections of the power curve are constant over the flow rate. To facilitate sensorless differential pressure control, all parameters
of the pump characteristic curves (3-4-1, 3-4-3-1 to 3-4-3-22) and the pipe diameters (3-5-2-1 und 3-5-2-2) must be entered. All needed
parameters for the flow rate estimation like pipe diameters are preset in the pump production when ordering a completely assembled
pump, motor and drive.
Nr. Parameter Change value to Pre-settings by
factory
2)
Changeable by
3-6-1 Type of Control 4 = Differential Pressure
(sensorless) 0 = OFF (Open-
loop Control) ServiceTool, Display
3-11-2-1 Minimum Pressure -1.00 [bar] -1,00 [bar] ServiceTool
3-11-2-2 Maximum Pressure 10.00 [bar] 999,99 [bar] ServiceTool
3-11-2-3 Pressure Unit bar preset ServiceTool
1-3-2 Setpoint (Closed-loop Control) 4.00 [bar] 0,00 [bar] ServiceTool, Display
3-9-8-1 Flow Rate Estimation 1 = ON preset ServiceTool, Display
3-5-2-1 Pipe Diameter_Suction Pressure Measuring
Point 30 mm preset ServiceTool
3-5-2-2 Pipe Diameter_Discharge Pressure Measuring
Point 30 mm preset ServiceTool
3-5-2-3 Height Difference_Pressure Measuring Points 0,4 m preset ServiceTool
3-5-2-4 Pressure Measuring Point Positions Close to Pump preset ServiceTool
3-8-6-1 Digital Input 1 Function System Start 1) preset ServiceTool
1) Digital Input 1 is set as at the factory as system start. If a digital input is set as system start, the parameter 1-3-1 System start is auto-
matically without function (see control point concept in operating manual)
2) Pre-settings for completely assembled pump, motor, drive
Nr. Function
16 Enable power electronic
17 Ground for digital inputs
11 System start with DI1
1)
18 Alarm
PDrv 2 Eco Or local Or PLC Drive