Daikin EWYQ230DAYN [379/524] Functions

Daikin EWYQ230DAYN [379/524] Functions
ESIE06-05 Functional Control for a Standalone Unit
Part 2 – Functional Description 2–153
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3.17 BMS Function
Introduction BMS stands for Building Management Systems. These systems were developed for centralized
overview and control of technical installation for complete sites.
The Daikin BMS option makes it possible to connect the Daikin chillers to a larger control system. The
necessary tools for this communication are the Gateway and the address card.
In this chapter we will give a short overview of the possibilities and settings for the BMS function. For
more detailed information we refer to the service manual “BMS option for Daikin” air cooled chillers
with scroll compressor.
BMS integration
with MODBUS
protocol (kit
EKACPG per
chiller)
Modbus protocol.
Setup:
Monitor and Control:
On-Off
Thermostat (setpoints, mode)
Capacity limit
Low noise
Monitor:
Error (active/not active, code, type)
Unitcapacity
Compressor, fan status
All inputs/outputs (incl all sensors)
Functions:
DIP-switch S3A on adress card
on OFF except for last unit in line
mainPCB
circuit 1
mainPCB
circuit 2
RS485
RS485
RS485
Maximum 32 chillers
Full list of variables that can be read and/or
written: see operation manual of adress
card or BMS Service Manual ESIE 07-09.

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