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User Manual
4 Controller
22
EMW90HDNC1A Air-cooled Chiller
Parameter
Description
Local Addr
The address of this machine
and the address of the main
control unit are configured as 1.
If the number of group control
units is 2, that is, when two
chillers back up each other, the
local address is configured as 1,
and the other backup unit
address is configured as 2.
Mode
Set to Auto.
MenberQty
Number of groups.
If two chillers backup each
other, the configuration is 2.
StandbyQt
y
Number of standby machines.
If two chillers backup each
other, the configuration is 1.
Polling
Time
Round patrol time for the system
to exchange master and
standby.
Default value: 24
Unit: Hours
Table 4-6 Parameter description of the System Cfg interface
Parameter
Default Value
Setting Range
Description
Monitor Addr
1
[1~247]
The monitoring address of water chillers is
unique when there are multiple units.
Monitor Baud
Rate
9600
4800/9600/14400/
19200/38400/57600
Monitoring Baud rate (unit: Baud) used for
communication of chillers.
Please consult with the host computer
maintenance personnel and configure
according to the actual plan.
Protocol
Control Mode
Modbus
Modbus
CAN
Types of communication protocols used in
chiller control system.
CyclePumpS
peedGear
Default
Default
1 Gear
2 Gear
3 Gear
4 Gear
Default: The flow rate is 50L/min@90kPa.
1 Gear: The flow rate is 55L/min@110kPa.
2 Gear: The flow rate is 44L/min@70kPa.
3 Gear: The flow rate is 33L/min@40kPa.
4 Gear: It is not defined at present. Please
communicate with the equipment
manufacturer for confirmation before use.
CompSpeed
Gear
Default
Default
1 Gear
2 Gear
3 Gear
Default: The maximum corresponding
rated refrigerating capacity is 8kW.
1 Gear: The maximum corresponding rated
refrigerating capacity is 7.8kW.

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