Daikin ERAD 120E-SL, Инструкция по установке, эксплуатации и обслуживанию

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The signal wire must be directly connected to terminals 886 and 887 of the terminal board MC24. A shielded wire is
recommended and it must not be laid in proximity of the power cables, so as not to induce interference with the electronic
controller.
Unit limitation
– Electrical wiring (Optional)
The unit microprocessor allows to limit the cooling capacity according to two different sets of criteria:
- Demand limit: The unit load can be varied by means of a 4-20 mA external signal released by a BMS. The
signal wire must be directly connected to terminals 888 and 889 of the MC24 terminal board. A shielded wire is
recommended and it must not be laid in proximity of the power cables, so as not to induce interference with the
electronic controller.
- Current limit: The unit load can be varied by means of a 4-20 mA signal released by a BMS. In this case, a
maximum current value must be set on the microprocessor so that the microprocessor controls compressor
loading according to the reference value and to the measured feedback current (a current transformer is
installed inside the panel). The signal wire must be directly connected to terminals 890 and 889 of the MC24
terminal board. A shielded wire is recommended and it must not be laid in proximity of the power cables, so as
not to induce interference with the electronic controller. A digital input allows to enable the current limitation
when required. Connect the enabling switch or a timer (dry-contact) to terminals 884 and 885 of terminal board
MC24.
Attention: the two options cannot be enabled simultaneously. Setting one function excludes the other.