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--- danfoss_control [2019/01/04 13:34] – emozolyak
+++ danfoss_control [2019/01/04 13:35] – emozolyak
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 ====== Controlling Danfoss frequency drives ======
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 Danfoss frequency drives supports Modbus protocol. To enable it, the parameter 08-30 should be set to [2].
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 To access any paramter you can use the formula: (Pr.Num. * 10 - 1). E.g. 8-31 (bus address) will equal 831*10 - 1 = 8309.
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 Below are the register settings for controlling the VLT Micro drive FC51 frequency converter - start / stop, change of direction of rotation, speed reference.
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 In the frequency converter, the frequency values are presented as follows: the frequency 50 Hz (100% of the scale) corresponds to the number 16384. Negative values are also a number in binary complementary form (two's complement). Therefore, to correctly display the frequency and its task for the registers, it is necessary to use the multiplier 50/16384 = 0.0030517578125, and specify the appropriate format in the register properties.