Omron SX inverter manual
Omron SX inverter manual
Omron SX inverter manual
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See menu:<br />
[529] to [52H] Digital Input<br />
[554] to [55C] Relay<br />
<strong>SX</strong>-V<br />
MASTER<br />
R:SlavePump3<br />
R:SlavePump2<br />
R:SlavePump1<br />
feedback<br />
inputs<br />
DI:Pump1Feedb<br />
DI:Pump2Feedb<br />
DI:Pump3Feedb<br />
other<br />
drive<br />
other<br />
drive<br />
other<br />
drive<br />
(NG_50-PC-6_1)<br />
Fig. 40 Feedback "Status" input<br />
PM<br />
P1 P2 P3<br />
7.6.5 Fail safe operation<br />
Some pump systems must always have a minimum<br />
flow or pressure level, even if the frequency <strong>inverter</strong> is<br />
tripped or damaged. So at least 1 or 2 (or maybe all)<br />
additional pumps must keep running after the <strong>inverter</strong><br />
is powered down or tripped. This kind of "safe" pump<br />
operation can be obtained by using the NC contacts<br />
of the pump control relays. These can be programmed<br />
for each individual additional pump. In this example<br />
pumps P5 and P6 will run at maximum power if the<br />
<strong>inverter</strong> fails or is powered down.<br />
See menu:<br />
[554] to [55C] Relays<br />
[55D4] to [55DC] Mode<br />
<strong>SX</strong>-V<br />
MASTER<br />
R:SlavePump6<br />
R:SlavePump5<br />
R:SlavePump4<br />
R:SlavePump3<br />
R:SlavePump2<br />
R:SlavePump1<br />
(50-PC-7_1)<br />
PM<br />
P1 P2 P3 P4 P5 P6<br />
Fig. 41 Example of "Fail safe" operation<br />
44 Main Features <strong>Omron</strong> <strong>SX</strong> <strong>inverter</strong> <strong>manual</strong>
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