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Emotron FDU 2.0 AC drive

Emotron FDU 2.0 AC drive

Emotron FDU 2.0 AC drive

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See menu:[529] to [52H] Digital Input[554] to [55C] Relay<strong>FDU</strong>MASTERR:SlavePump3R:SlavePump2R:SlavePump1feedbackinputsDI:Pump1FeedbDI:Pump2FeedbDI:Pump3Feedbother<strong>drive</strong>other<strong>drive</strong>other<strong>drive</strong>(NG_50-PC-6_1)Fig. 52 Feedback "Status" inputPMP1 P2 P37.6.5 Fail safe operationSome pump systems must always have a minimum flow orpressure level, even if the frequency inverter is tripped ordamaged. So at least 1 or 2 (or maybe all) additional pumpsmust keep running after the inverter is powered down ortripped. This kind of "safe" pump operation can beobtained by using the NC contacts of the pump controlrelays. These can be programmed for each individual additionalpump. In this example pumps P5 and P6 will run atmaximum power if the inverter fails or is powered down.See menu:[554] to [55C] Relays[55D4] to [55DC] Mode<strong>FDU</strong>MASTERR:SlavePump6R:SlavePump5R:SlavePump4R:SlavePump3R:SlavePump2R:SlavePump1(50-PC-7_1)PMP1 P2 P3 P4 P5 P6Fig. 53 Example of "Fail safe" operation44 Main Features <strong>Emotron</strong> AB 01-4428-01r3

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