Omron SX inverter manual
Omron SX inverter manual
Omron SX inverter manual
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7.6 Pump sequencer function<br />
7.6.1 Introduction<br />
A maximum of 4 pumps can be controlled with the<br />
standard <strong>SX</strong>-V variable speed drive.<br />
If I/O Board options are installed, a maximum of 7<br />
pumps can be controlled. The I/O Board can also be<br />
used as a general extended I/O.<br />
The Pump Control function is used to control a<br />
number of drives (pumps, fans, etc., with a maximum<br />
of 3 additional drives per I/O-board connected) of<br />
which one is always driven by the <strong>SX</strong>-V. Other names<br />
for this kind of controllers are 'Cascade controller' or<br />
'Hydrophore controller'.<br />
Depending on the flow, pressure or temperature, additional<br />
pumps can be activated via the appropriate signals<br />
by the output relays of the <strong>SX</strong>-V and/or the I/O<br />
Board. The system is developed in such a way that<br />
one <strong>SX</strong>-V will be the master of the system.<br />
Select relay on the control board or on an option<br />
board. The relays are set to functions for controlling<br />
pumps. In the pictures in this section, the relays are<br />
named R:Function, e.g. R:SlavePump1, which means<br />
a relay on the control board or on an option board set<br />
to function SlavePump1.<br />
Set FLOW<br />
Feedback<br />
FLOW<br />
<strong>SX</strong>-V<br />
R:SlavePump1<br />
MASTER<br />
R:SlavePump2<br />
AnIn<br />
PI D<br />
AnIn<br />
PM<br />
R:SlavePump3<br />
R:SlavePump4<br />
P1 P2 P3 P4 P5 P6<br />
All additional pumps can be activated via a VSD, soft<br />
starter, Y/ or D.O.L. switches.<br />
Set<br />
PRESSURE<br />
Feedback<br />
PRESSURE<br />
<strong>SX</strong>-V<br />
R:SlavePump1<br />
MASTER<br />
R:SlavePump2<br />
AnIn<br />
PI D<br />
AnIn<br />
PM<br />
R:SlavePump3<br />
R:SlavePump4<br />
R:SlavePump5<br />
R:SlavePump6<br />
Pr essur e<br />
4<br />
3<br />
2<br />
1<br />
P1 P2 P3 P4 P5 P6<br />
Power<br />
Flow<br />
Fig. 36 Pressure control with pump control option<br />
(50-PC-2_1)<br />
Pumps in parallel will operate as a flow controller, See<br />
Fig. 35.<br />
Pumps in series will operate as a pressure controller<br />
see Fig. 36. The basic control principle is shown in Fig.<br />
37.<br />
NOTE: Read this instruction <strong>manual</strong> carefully before<br />
commencing installation, connecting or working with<br />
the variable speed drive with Pump Control.<br />
R:SlavePump5<br />
R:SlavePump6<br />
FREQUENCY (master pump P)<br />
Add pump<br />
Pr essur e<br />
Stop pump<br />
Power<br />
Flow<br />
1 2 3 4<br />
Fig. 35 Flow control with pump control option<br />
(50-PC-1_1)<br />
P=on<br />
FLOW /<br />
PRESSURE<br />
P1=on P2=on P3=on P4=on P5=on P6=on<br />
FLOW /<br />
PRESSURE<br />
TIM E<br />
(50-PC-3_1)<br />
Fig. 37 Basic Control principle<br />
42 Main Features <strong>Omron</strong> <strong>SX</strong> <strong>inverter</strong> <strong>manual</strong>
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