Satchwell IAC 600 - Page 14

Outside Air
Temperature
°
C
Water
Temperature
°
C
OUTSIDE
TEMP.
SUPPLY SET
VALUE
1: IN 0
2: IN 5
3: IN 20
OUT 80
OUT 65
OUT 20
Settin
g
s 4 to 11 set to "---"
(
unused
)
.
EXAMPLE COMPENSATION SET-UP
To confi
g
ure a controller module to operate a compensation scheme
connect the modules as follows:
Water/Air Suppl
y
sensor connected to controller module main sensor
input.
Outside sensor connected to RPW input via a look-up table module.
Wind sensor connected to the 0 to 10 Volt reset input
(
optional
)
.
Other inputs and outputs would be connected as for normal control
schemes.
Example Look-Up Table settings for the graph below:-
APPLICATIONS
The IAC has a number of preset applications built in. The preset applications are selected from the 8 wa
y
bit switch on the IAC.
It is important to note that
any
application ma
y
be customised b
y
usin
g
the computer and it will be stored in the IAC even in the event of a
power failure. The supplied applications are merel
y
a startin
g
point for a s
y
stem but if the supplied application suits
y
our s
y
stem it ma
y
be
used as it stands.
Hardware Preset Applications
There are currentl
y
4 preset applications that can be selected from the 8 wa
y
bit switch and the
y
are as follows:-
Preset 0 – Fully configurable
No links are made between modules. This preset should be chosen if
y
ou wish to confi
g
ure the IAC completel
y
.
APPLICATION NOTES
1. If an application is to be used on an IAC via a computer select software preset 0. Use the confi
g
uration librar
y
in the Satchnet Computer
Software to load the re
q
uired preset application from disk. Then send the confi
g
uration to the controller.
2. Most applications include one or more timeschedules. If the IAC is connected to a computer then the IAC will operate on its own
timeschedule. If it is not then the IAC will default to its occupied state.
3. Most applications can be used as sin
g
le sta
g
e if re
q
uired b
y
settin
g
the unused sta
g
e as follows:-
Proportional Band = 10,000
Inte
g
ral Action Time = 0
Derivative Action Time = 0
Ramp Time = 0
4. When outputs are duplicated either the 24Vac or 0 to 10Vdc output can be used as re
q
uired as the
y
operate in parallel.
DS 2.951A 14 - 24 05/98