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Edwards nEXT85 User Manual

Edwards nEXT85
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Similarly, if the pump is started by using the start switch on the parallel interface, the pump
cannot then be stopped by sending a stop command over the serial interface. The pump will
ignore any start or stop commands received over the serial interface. To stop the pump, use
the parallel stop switch. Only when the pump has been stopped using the parallel interface
switch will any start or stop commands be accepted via the serial interface.
Figure 7
Logic interface connecon - mixed parallel and serial operaon
1. RS232 interface on control equipment
2. 24 V d.c. electrical supply
3. Fuse
4. Oponal LED indicator - system OK
5.
Oponal LED indicator - normal speed
6. Current limit resistor for LED
7. Oponal serial link selector
8. nEXT pump
9. Oponal voltmeter
10. Oponal serial enable switch
11.
Oponal standby switch
12. Start switch
Cooling
Cooling requirements
CAUTION:
Ensure that the pump is adequately cooled to prevent damage to the rotor and bearing.
CAUTION:
When using alternave cooling arrangements other than the standard Edwards cooling
accessories, ensure cooling is not solely directed or ducted onto the pump controller.
CAUTION:
If the pump will be located inside an enclosure, ensure that there is adequate venlaon
so that the ambient temperature around the pump does not exceed 40 °C.
B8G0-00-880A - Install the nEXT85
Page 32

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Edwards nEXT85 Specifications

General IconGeneral
BrandEdwards
ModelnEXT85
CategoryWater Pump
LanguageEnglish

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