Kan en frekvensomformer fra NORD klare et 4-20 mA eller bipolært (+/10 V) analogt signal?
Can a NORD frequency inverter process a 4–20 mA or bipolar (+/10 V) analogue signal?
En frekvensomformer fra NORD kan normalt behandle et 0/4-20mA eller bipolært analogt signal. Dette kan indstilles i parametrene P400-P403 (indgang) og P418-P419 (udgang) og er beskrevet i frekvensomformerens betjeningsvejledning. Der skal indstilles en kalibrering af analogindgangen/analogudgangen. For nogle frekvensomformermodeller skal en DIP-switch til V/I-konvertering (intern modstand for analogindgang/analogudgang) ændres. For nogle frekvensomformermodeller skal der tilsluttes en ekstern konverter (U/I-konverter 10V20mA, 278910315) til analogudgangen. For at tilslutte et bipolært analogt signal til den unipolære analogindgang på en frekvensomformer, kan der tilsluttes en ekstern setpointomformer +/10 V (278910320).
As a general rule, a NORD frequency inverter can process a 0/4–20 mA or bipolar analogue signal This can be set in the parameters P400–P403 (input) and P418–P419 (output), and is described in the operating instructions of the frequency inverter You have to set an adjustment of the analogue input/analogue output For some frequency inverter models, you have to adjust a DIP switch for the V/I conversion (internal resistance of the analogue input/analogue output) For some frequency inverter models, an external converter (V/I converter 10 V 20 mA, 278910315) must be connected to the analogue output For the connection of a bipolar analogue signal to the unipolar analogue input of a frequency inverter, an external setpoint converter +/10 V (278910320) can be connected