62
Configuration Systemcontroller
Plant switched on
Settings external control
Settings Ethernet
Settings Modbus
Cascade settings
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Fig.46
Settings for:
■
"External control"
■
"Ethernet"
■
"Modbus"
■
"Cascade"
1.3.1. Screens showing possible settings:
■
Select
å
■
Select
"Login"
■
Enter the password and select
"Configuration"
■
Select
"Parameters of sys.controller"
■
Select
"Features of external control"
Features of external control
08:22:53
16.07.14
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Features of the external control
Please see the detailed description in the service manual
Mode of control
Setpoint configuration
Modbus
UP
0
Min. pause time in minutes
Down
UP
0
Setpoint constant cooling in °C.
Down
UP
0
Setpoint constant heating in °C.
Down
BACnet
Setpoint constant
No setpoint
Direct control signals
Setpoint external
Heating / cooling
Power Steps Regulation
Only heating
Steps regulation
Fig.47
Mode of control
■
"Direct control signals"
determines the type of
control signals for external control:
Enable signal 1
and 2
,
Changeover signal cooling/heating
and
Analogue signal
for the set value
Enable signals
■
There are 3 enable signals in the electrical scheme
■
Enable signal 1 and 2, both open: No compressor is
enabled
■
1 closed and 2 open: 1 compressor is enabled
■
1 open and 2 closed: 2 compressors are enabled
■
1 and 2 closed: 3 compressors are enabled
Commissioning, inspection, maintenance
Commissioning the system
(cont.)
5549 991 GB
Summary of Contents for 301.BS090
Page 99: ...99 5549 991 GB...
