OI_EC2-XC645CX_A1_A2L_A3_EN_Rev01_866933.docx EC2-XC645CX 40/54
19.2 Flood protection function
To ensure the maximum safety of the plant, a relay is activated when the compressors cannot be
switched on since they are blocked due to safety times or for other issues or stopped for
maintenance.
This output can be used to block the liquid injection to the cabinets to avoid flooding the suction
collectors.
The relay will be disabled once the compressors can restart (see scheme ).
To enable this function set one relay by the parameters oA2 or oA3 or oA4 or oA5 or oA6, as
flood protection, EI oA4 = Liq, and then connect it to the external device that blocks the cabinet
injection.
NOTE: The relay set as flood protection is automatically activated even when the controller is
in stand-by mode.
If the compressors are activated in fix sequence, (Sty = no), and the compressor that
has to be activated is locked by safety timers, the relay set as flood protection is
switched on till the safety timers are over.
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