CIAT AQUACIAT CALEO CONNECT TOUCH, Инструкция по эксплуатации

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7.1 Start/stop control
The unit state is determined based on a number of factors,
including its operating type, active overrides, open contacts,
master/slave configuration, or alarms.
The table given below summarizes the unit control type [ctrl_typ]
and its running status with regard to the following parameters:
• Operating type: This operation type is selected using the
Start/Stop button on the user interface.
LOFF Local off
L-C Local on
L-SC Local schedule
Rem Remote
Net Network
Mast Master unit
• Start/stop force command [CHIL_S_S]: Start/stop force
command can be used to control the chiller state in the
Network mode.
Command set to stop: The unit is halted.
Command set to start: The unit runs according to schedule 1.
• Remote start/stop contact status [Onoff_sw]: Start/stop
contact status can be used to control the chiller state in the
Remote operating type.
•
Master control type
[ms_ctrl]: When the unit is the master
unit in a two-chiller master/slave arrangement, the master unit
may be set to be controlled locally, remotely or via network.
• Start/stop schedule [chil_occ]: Occupied or unoccupied
status of the unit.
•
Network emergency stop command
[EMSTOP]:
If activated, the unit shuts down regardless of the active
operating type.
• General alarm : The unit shuts down due to failure.
7.2 Capacity control
The Connect Touch control adjusts the number of active
compressors to keep the heat exchanger temperature at its
setpoint. The precision with which this is achieved depends on
the capacity of the water loop, the flow rate, and the load.
7.3 Demand limit
The demand limit functionality is used to limit the unit power
consumption whenever possible.
The control allows limitation of the unit capacity:
• By means of user-controlled volt-free contacts: The unit
capacity can never exceed the limit setpoint activated by
these contacts. The limit setpoints can be modified in the
SETPOINT menu.
• By setting DEM_LIM when the unit is in Network mode.
• By lag limit set by the master unit (master/slave assembly).
If the unit is not in the Master/Slave assembly, the lag limit
value is equal to 100%.
Capacity limitation is expressed in percentage, where a limit
value of 100% means that the unit may run with its full capacity
(no limitation is implemented).
Example: Switch-controlled demand limitation
(Switch Limit Setpoint in the Setpoint menu)
Switch Limit Setpoint [lim_sp1] Compressor control
100% 1 × 2 = 2 compressors Two compressors can be started
75% 0.75 × 2 = 1.5 compressor One compressor can be started
50% 0.5 × 2 = 1 compressor One compressor can be started
25% 0.25 × 2 = 0.5 compressor No compressor can be started
7 - STANDARD CONTROL OPERATIONS AND OPTIONS
Active operating type Parameters status
Control
type
Unit
state
LOFF L-C L-SC Rem Net Mast
Start/stop
force
command
Remote start/
stop contact
Master
control type
Start/stop
schedule
Network
Emergency
Shutdown
Alarm
shutdown
enable off
yes off
active local off
active unoccupied local off
active open remote off
active unoccupied remote off
active disable network off
active unoccupied network off
active local unoccupied local off
active open remote remote off
active remote unoccupied remote off
active disable network network off
active network unoccupied network off
active disable no local on
active occupied disable no local on
active closed occupied disable no remote on
active enable occupied disable no network on
active local occupied disable no local on
active closed remote occupied disable no remote on
active enable network occupied disable no network on
IMPORTANT: When the unit is stopping or there is a demand to stop the unit, compressors are stopped consecutively.
In case of emergency stop, all compressors are stopped at the same time.
AQUACIAT
CALEO
EN - 20