– EAI as direction control has a higher priority than actual panel and terminal
setting. For example, the terminal control is giving a FWD signal, but during
the running process, the EAI’s input is becoming negative, then the final di-
rection would be changed to negative. If the command is from panel, then
U1.00 will be inactive if polarity is used to control the direction. And the
priorities of all other existing direction command sources (Ex: Simple PLC,
Multi-Speed Control) if it is higher than panel and terminal setting then it
remains higher than priority of EAI direction command also.
Frequency setting source combination with polarity of EAI
● When H8.06 'EAI input polarity setting' is set to '0' or '1', and frequency
source combination is selected, then the negative value of EAI will be treated
normally.
E.g: 5 V from AI1 and -2 V from EAI, then the combination result will be 7 V
with subtraction operation, and 3V with addition operation.
● When frequency source combination function is selected (either addition or
subtraction), the H8.06 'EAI input polarity setting' will be limited to '1' or '0',
and the combination result will always be limited to 0.00…[E0.09] Hz. When
frequency combination is selected (addition / subtraction), then if polarity
with direction control is already enabled (H8.06 = 2) 'PrSE' will be displayed.
Example
When H8.05 = 5 and H8.08 = 0:
1. H8.06 = 0
H8.15 = -100.0, H8.16 = 0.0, H8.17 = 100.0, H8.18 = 50.0
Fig. 12-7: EAI example 1
2. H8.06 = 1
H8.15 = -100.0, H8.16 = -50.0, H8.17 = 100.0, H8.18 = 50.0
Bosch Rexroth AG
Functions and Parameters
EFC x610 Series
118/389
DOK-RCON03-EFC-X610***-IT05-EN-P
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