Satchwell IAC 600 - Occupancy Setpoint; Optimum Off Setpoint

CONTROL MODULES
(
Cont.
)
Early Optimum Off
(
review onl
y)
‘- - -’ is normall
y
displa
y
ed unless the optimiser is in an optimum off
period and the space temperature falls below the optimum off set point.
At this point the parameter displa
y
s the number of minutes left until the
end of occupanc
y
time. This same value is also output from the
module as an analo
g
ue si
g
nal.
0 to 10,000 mins - - -
Optimiser Running?
(
review onl
y)
This allows
y
ou to see whether the optimiser has been disabled b
y
the
time lost input of the optimiser module.
Yes or No –
Learning is
(
review onl
y)
This allows
y
ou to see whether the self learnin
g
has been disabled b
y
the optimiser module di
g
ital input or from the "Enable Learnin
g
"
parameter.
On or Off –
Schedule Mode
(
review onl
y)
This code displa
y
s the section of the operatin
g
schedule the optimiser
is currentl
y
in.
Mornin
g
= before occupanc
y
.
Da
y
= durin
g
occupanc
y
.
Ni
g
ht = after occupanc
y
Mornin
g
, Da
y
,
Ni
g
ht
–
Optimiser Status
(
review onl
y)
Displa
y
s the current status of the optimiser.
Waitin
g
= the optimiser is waitin
g
to start a boost or run down period.
Boostin
g
= boost is in pro
g
ress.
Terminate = function
(
i.e. boost, run down etc.
)
has been stopped.
Run down = run down is in pro
g
ress.
Waitin
g
,Terminate,
Boostin
g
, Run Down
–
Optimiser Time
(
review onl
y)
This displa
y
s the current time as seen b
y
the optimiser.
0000 to 2359 –
Next Change Due
(
review onl
y)
This displa
y
s the calculated time for the next chan
g
e of output for the
optimiser module.
If no calculation has been made because, for instance, the next da
y
is
off then ‘4800 waitin
g
’ is displa
y
ed.
0000 to 2359 and
Monda
y
to Sunda
y
–
Schedule
Displa
y
ed in a tabular format with one ON/OFF per da
y
s and a 7 da
y
week. The ON and OFF times must be set in 24 hour format i.e. 3:00
AM is set as 0300. If the time schedule is to be OFF for the da
y
then
the ON and OFF times should be set to 0000
(
Saturda
y
and Sunda
y
default to OFF
)
.
0000 to 2359 Monda
y
to
Frida
y
0800,1700
Saturda
y
to
Sunda
y
0000, 0000
Clear Histogram
This is used to clear the histo
g
ram data if re
q
uired.
Yes or No No
Occupancy Setpoint
This is the setpoint to be used b
y
the optimiser.
–10,000 to 10,000 19
NOTE:-
If the remote setpoint input is used then that will override the
Occupanc
y
Setpoint.
Optimiser Direction
This sets the optimiser to operate a heatin
g
or coolin
g
plant.
Heatin
g
or Coolin
g
Heatin
g
Optimiser Algorithm
This selects the t
y
pe of pre-heat used b
y
the optimiser. Lo
g
arithmic
pre-heat is based on the BRE recommended BRESTART curve and
linear is the standard Satchwell t
y
pe.
Linear or
Lo
g
arithmic
Linear
Design Pre-Heat
This parameter allows the desi
g
n pre-heat to be set in minutes per
input unit.
0 to 10,000
Mins/unit
20 Mins/unit
Advanced Pre-Heat
This parameter allows the advanced pre-heat to be set in minutes per
input unit.
This value is used in place of DPH if the preceedin
g
da
y(
s
)
were off.
0 to 10,000
Mins/unit
25 Mins/unit
Enable Learning
This parameter is used to turn self learnin
g
on or off.
Yes or No Yes
Learning Ratio
This parameter sets the percenta
g
e self learnin
g
ratio.
0 to 100% 10%
Enable Optimum Off
This parameter is used to turn on and off the optimum off function.
Yes or No Yes
Design Optimum Off Time
This parameter allows the run down time to be set in minutes per input
unit.
0 to 10,000
Mins/unit
30 Mins/unit
Optimum Off Setpoint
This sets the minimum inside temperature at the end of the occupanc
y
period.
–10,000 to 10,000 19
ENTHALPY COMPARATOR MODULE
x 1
The Enthalp
y
Comparator module consists of two pairs of temperature
and humidit
y
inputs. The Enthalp
y
is calculated from each pair of
temperature/humidit
y
inputs. The output is on if the top pair of inputs
have a
g
reater enthalp
y
(
total heat content
)
than the bottom pair.
T
y
picall
y
this module is used to compare the enthalp
y
of the
recirculated air and fresh air and to override the controller to minimum
or maximum fresh air dependin
g
on application.
MODULES AND FUNCTIONS
Bubbleland
Symbol Module Range Default
05/98 9 - 24 DS 2.951A