Fuji Electric frenic mini series, Руководство пользователя

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4.5 Digital Output Selector
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Chap. 4
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The block diagram shown in Figure 4.4 shows you the processes to select the internal logic signals for
feeding to two digital output signals [Y1] and [30A, B, C]. The output terminals [Y1] (a transistor switch)
and [30A, B, C] (mechanical relay contacts) are programmable. You can assign various functions to these
terminals using function codes E20 and E27. Setting data of 1000s allows you to use these terminals for the
negative logic system.