Version 1.4
Application Guide PumpDrive 2 Eco
2016-10-20
2016-11-11 PDrv2-Eco_Application_Guide_rev_1_4.docx
Page 35 of 48
D
C
p
2
3
5
A
A
B
A
A
D
C
5
6
D
2
p
B
3.2.4
Closed loop control redundant: Discharge pressure with pressure sensor 4…20mA via M12
Etaline / Etabloc (2x100%): In a multi pump system with three pumps a constant pressure of 4bar is needed. The 4…20mA pressure sen-
sor with a measurement range of 0-6 bar placed in the manifold is connected in parallel to each analog input 2 of Master and AuxMas-
ter1. The AuxMaster can take over control if the Master fails. When connecting a 4…20mA sensor in parallel to all drives the 4…20mA
current signal must be converted to 2…10V voltage signal: therefore the DIP switch of the analog input 2 of the Master must be set to
“ON”
3)
. The set point is given by the display. After 24 h the pumps switch automatically.
Assignment M12 plug pressure sensor:
Nr.
Function
2
Actual value: pressure sensor 4…20mA redundant
5
Tailor-made bus cable for double and multi pump operation (color:
purple, male: angled, male: angled)
6
tailor-made cross link bus cable for the redundant connection of the
pressure sensor (color: black, female: angled, male: angled
A
M12 Module female A: connection pressure sensor
B
M12 Module female B: connection cross link bus cable for the redun-
dant connection
C
M12 Module female C: for Double and multi pump operation (KSB-de-
vice bus) or Bus resistor
D
M12 Module female D: for Double and multi pump operation (KSB-de-
vice bus) or Bus resistor
Drive 1 (Master)
Drive 2 (AuxMaster)
Master
Aux Master
5
3
4
1
2
+24 V
GND /
Schirm
N
Signal
