Version 1.4
Application Guide PumpDrive 2 Eco
2016-10-20
2016-11-11 PDrv2-Eco_Application_Guide_rev_1_4.docx
Page 40 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
4.1.2
Closed loop control: dynamic differential pressure set point compensation based on speed
A constant differential pressure of 4 bar is needed. The 4…20mA differential pressure sensor with a measurement range of 0-6 bar is
connected to analog input 2. The set point is given by the display. If neither the measured nor estimated flow rate is available, dynamic
pressure setpoint compensation can be realized based on speed. This is only possible for closed hydraulic circuits, however. The nominal
flow is 80 m³/h. The pipe friction losses are roundabout 1 bar. All parameters needed for the flow estimation like pipe diameters are pre-
set individually for each pump size by the pump production when ordering a completely assembled pump, motor, drive.
Δp
2
Nr.
Parameter
Change value to
Pre-settings by factory
2)
Changeable by
3-6-1
Type of Control
3 = Differential Pressure
0 = OFF (Open-loop
Control)
ServiceTool, Display
3-11-2-1
Minimum Pressure
0.00 [bar]
-1,00 [bar]
ServiceTool
3-11-2-2
Maximum Pressure
6.00 [bar]
999,99 [bar]
ServiceTool
3-11-2-3
Pressure Unit
bar
Preset
ServiceTool
3-2-2-1
Minimum Motor Speed
500 [1/min]
Preset
ServiceTool, Display
3-2-2-2
Maximum Motor Speed
2950 [1/min]
Preset
ServiceTool, Display
1-3-2
Setpoint (Closed-loop Control)
4.00 [bar]
0,00 [bar]
ServiceTool, Display
3-8-2-1
Analog Input 2 Signal
1 = 4…20mA
0 = Off
ServiceTool, Display
3-8-2-2
Analog Input 2 Function
6 = Differential Pressure
0 = No Function
ServiceTool, Display
3-8-2-3
Analog Input 2 Lower Limit
0.00 [bar]
-
ServiceTool, Display
3-8-2-4
Analog Input 2 Upper Limit
6.00 [bar]
-
ServiceTool, Display
3-9-3-1
Dynamic Pressure Setpoint Compen-
sation Method
1 = speed
0 = Off
ServiceTool, Display
3-9-3-3
Dyn Press Setpoint Comp n Data
Point
100 [%]
0 [%]
ServiceTool
3-9-3-4
Setpoint Compensation
1.00 [bar]
0.00 [bar]
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 DI
1)
2
Actual value: pressure sensor 4…20mA
18
Alarm
1 bar
4 bar
80 m³/h
PDrv 2 Eco
Or local
Or PLC
Drive
