Klimor EVO -T - 10. CONTROLLER COMMUNICATION; 10.1 Communication of RS485 Master, Modbus RTU with the BMS system

72
AUTOMATION AND CONTROL SYSTEM FOR UNITS EVO-T; EVO-T COMPACT
OPERATION AND MAINTENANCE MANUAL
Group Name
Default
value
Description / Settings menu
Water
heater
Preliminary
heating
15s Heating time 100% – primary heating time with 100% valve opening, independent from min, max ext. T
30s
Heating time scale – primary heating time with percentage valve opening dependent on the external temperature and the water return
temperature (if B8 sensor is activated)
Active Drop ramp – possibility to activate / deactivate the drop ramp for valve opening stage after primary heating
30s
Drop time – after system starts and primary heating occurs, the heater valve starts closing from the current opening resulting from the
external temperature scale to the opening resulting from the temperature control process signal
0°C Min ext. T. – minimum external temperature of valve control scale during primary heating
75% Min ext. T. valve. – valve control during primary heating for external temperature equal to Min ext. T.
10°C Max ext. T. – minimum external temperature of valve control scale during primary heating
15% Max ext. T. valve. – valve control during primary heating for external temperature equal to Min ext. T.
Pump activation
temperature
5°C Pump activation temperature – external temperature below which the circulating pump works all the time
Pump deactiv.delay 0s Pump deactivation delay – delay in deactivation of the water heater circulating pump
Minimum valve
opening
10%
Minimum valve opening – degree of minimum opening of the heater valve present during standstill and during work of the ventilation unit,
occuring at the drop of the external temperature below the Pump activation temperature parameter.
Frost water
Inactive Sensor B8 – heater protection activation through the return water temperature sensor (activation is possible in systems without an primary heater)
10°C Frost activation temperature – activation of Frost protection control on the water side in respect of external temperature lower than this parameter
15°C
Frost – Stop – return temperature threshold setting below which the system switches to heating mode (during standstill), connected with
blocking alarm A_ThHWwater
20°C
Frost – Start – return temperature threshold setting below which the system switches to heating mode (during work), connected with
blocking alarm A_ThHWwater
25°C
Control – Stop – heater water return temperature setting, valve is opened at low temperature, regardless of the main heater control signal
(during standstill)
30°C
Control – Start – heater water return temperature setting, valve is opened at low temperature, regardless of the main heater control signal
(during work)
1 Kp – strengthening the return water set point controller
30s Ti – return water set point controller constant of integration
Pump protection
Active
Set protection – activation / deactivation of the pump protection control by its cyclical activation (factory setting is 30 seconds of pump
work every 7 days of idle pump)
7days Standstill time – active when the pump protection function is active
30s Start time – active when the pump protection function is active
DX
Cooler
-
120s Min operation time – minimal operation time of the refrigerating unit. Enter set point according to the refrigerating unit OMM
180s Min stop time – minimal stopping time of the refrigerating unit. Enter set point according to the refrigerating unit OMM
10°C Min external operation temp. – min external operation temperature at which the refrigerating unit is operating.
Inactive Level II – option to activate II cooling level
Inactive
Cascading – option to activate the cascading control of 2-level DX cooler (1 – I level, 2 – II level, 3 – I and II levels), use in case of two coolers
with dierent eciency parameters
50% Level II – option to set the adjustment signal threshold setting, when the II level of cooling is activated
75% Level III – option to set the adjustment signal threshold setting, when the III level of cooling is activated (only in the cascading mode)
NOTE! The control system sends simultaneously the 0÷10VDC signal to control the DX cooling coil, in case of control with 0÷10VDC signal the „II stage” and
„Cascade” functions have to be deactivated.
Mixing
chamber
Operation mode Auto
Auto – the mixing chamber is involved in the temperature adjustment process
Manual – the mixing chamber is not involved in the temperature adjustment process, setting set point of the opening level in the controller
main menu
Priority for
Mixing
chamber
Heater/cooler – in the temperature adjustment process in the mixing chamber auto operation mode these functions are involved in the fol-
lowing order:
1. Recovery / 2. Heater/cooler / 3. Mixing chamber
Mixing chamber – in the temperature adjustment process in the mixing chamber auto operation mode these functions are involved in the
following order:
1. Recovery / 2. Mixing chamber / 3. Heater/cooler