UST500 CONTROL BOARD
06MC0074@00B0100
14/04/2010
39
Operating States (folder PAr/St)
Once the installation has been configured, UST 500 is ready to control utilities based on the temperature and pressure conditions read by the
probes and the temperature control functions defined in the relative parameters.
Operating mode parameters can be viewed and configured in folder St (see User Interface and Parameters sections).
When UST500 is not OFF or on StdBy, it is in heat or cool mode.
Operating modes
Three operating modes can be set in parameter St00:
•
St00=0 Cool
only
COOL
•
St00=1 Heat
only
HEAT
•
St00=2 Heat and cool
HEAT + COOL
Operating modes
Each operating mode is associated to operating states.
Operating states can be selected:
•
from the keyboard - if keys are enabled in parameters:
o
UI
11 Enable MODE function from key To enable or disable the selection of operating mode from a key..
o
UI
13 Enable ON/OFF from key. To enable or disable the ON/OFF key to switch the device on or off.
•
From
appropriately
configured
digital inputs:
o
i.e. Remote ON/OFF
o
Remote
STD-BY
Operating mode
COOL
HEAT
HEAT+COOL
Operating state
Cooling
x
NA
x
Heating
NA
x x
Standby (Stdby)
x
x
x
Remote Standby (Stdby)
x
x
x
OFF x
x
x
Remote OFF
x
x
x
If different states are requested at the same time, the following priorities are assigned (in increasing order):
Current operating mode (current mode)
Operating mode after
request
Priority
COOL
HEAT
HEAT+COOL
Action
1
Digital input configured as
ON/OFF (§)
Digital input configured
as ON/OFF (§)
Digital input configured as
ON/OFF (§)
Remote OFF (§)
2
ON/OFF key enabled
(press and hold DOWN
key)
ON/OFF key enabled
(press and hold DOWN
key)
ON/OFF key enabled
(press and hold DOWN key
)
OFF
3
Digital input configured as
Standby
Digital input configured
as Standby
Digital input configured as
Standby
Standby
4
Mode key enabled
(press and hold ESC key)
Mode key enabled
(press and hold
ESC key)
NA
Mode selected by user
(see mode, change mode
key)
4’
NA
NA
Mode key enabled
(*)
Standby
(*)
5 NA
NA Select
mode
(**) (**)
6
NA
NA
Mode key enabled
(press and hold ESC key)
Mode selected by user
(see mode, change mode
key)
(§) In this case the key [local ON/OFF] has no effect on the operating mode
(*) it will not be possible to switch from COOL mode to HEAT mode (HEAT label not visible by pressing and holding ESC key (Mode, change
mode function))
(**) it will not be possible to switch from HEAT mode to COOL mode (COOL label not visible by pressing and holding ESC key (Mode, change
mode function))
Содержание UST500
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