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8 - TOUCH PILOT CONTROL OPERATION
8.1 - 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 triggered due to
operating conditions.
The table given below summarises the unit control type
[ctrl_typ] and its running status with regard to the following
parameters:
• Operating type: Operating type is selected using the
Start/Stop button on the user interface.
LOFF
L-C
L-SC
Rem
Net
Mast
Active operating type
LOFF
L-C
L-SC
Rem
-
-
-
-
-
-
-
-
active
-
-
-
-
-
active
-
-
-
-
active
-
-
-
active
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
active
-
-
-
-
active
-
-
-
-
active
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Start-up delay
When changing the operating type (Local/Remote/Network),
the control normally undergoes the transition stage during
which the unit is stopped, and then allowed to start again
(start-up delay is applied).
Unit stop function
This function controls the unit compressor capacity reduction.
If there is an alarm or a demand to stop, it forces the
compressors to the minimum capacity before stopping them.
28
Local off
Local on
Local schedule
Remote
Network
Master unit
Start/Stop
Net
Mast
force
command
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
active
-
disabled
active
-
-
-
active
-
-
active
-
-
active
-
-
active
disabled
-
active
-
-
-
-
-
-
-
-
-
-
active
-
enabled
-
active
-
-
active
-
-
active
enabled
• Start/stop force command [CHIL_S_S]:
Unit start/stop force command can be used to control
the unit state in the Network operating type.
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 can be used to control the unit state
in the Remote operating type.
• Master control type [ms_ctrl]: When the unit is the
master unit in a two-unit 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 [EMMSTOP]:
If activated, the unit shuts down regardless of the active
operating type.
• General alarm: The unit shuts down due to failure.
Parameters status
Remote
Master
Start/Stop
start/stop
control
schedule
contact
type
-
-
-
-
-
-
-
-
unoccupied
open
-
-
-
unoccupied
-
-
-
-
unoccupied
-
local
unoccupied
open
remote
-
remote
unoccupied
-
network
-
network
unoccupied
-
-
-
-
occupied
closed
-
occupied
-
-
occupied
-
local
occupied
closed
remote
occupied
-
network
occupied
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.
Network
Alarm
Emergency
shutdown
Shutdown
-
enabled
-
-
-
yes
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
disabled
no
disabled
no
disabled
no
disabled
no
disabled
no
disabled
no
disabled
no
Control
Unit
type
state
-
off
-
off
local
off
local
off
remote
off
remote
off
network
off
network
off
local
off
remote
off
remote
off
network
off
network
off
local
on
local
on
remote
on
network
on
local
on
remote
on
network
on
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