Satchwell IAC 600 - Input;Output Modules; Temperature Input Modules; Analogue Input Modules (Voltage); Digital Output Modules

GENERAL NOTES
1. The IAC uses two t
y
pes of si
g
nal internall
y
. The
y
are as follows:-
Analo
g
ue Values from –10,000 to +10,000 these represent temperature
(
°
C,
°
F
)
, Volta
g
es, Ohms, Lux and control outputs.
Di
g
ital si
g
nals, these si
g
nals are either On or Off.
2. Analo
g
ue inputs or outputs cannot be directl
y
connected to Di
g
ital inputs or outputs. To convert an analo
g
ue value to a di
g
ital si
g
nal use a
threshold module.
3. When handlin
g
Volta
g
e or controller output si
g
nals
y
ou should note that values are in the ran
g
e of 0 to 100 where 0 = Off or 0 Volts and
100 = full On or 10 Volts.
4.
°
C,
°
F, Ohms and Lux are all displa
y
ed as actual values e.
g
. 20
°
C = 20, 68
°
F = 68, 2000 Ohms = 2000 etc.
5. When usin
g
a controller module for sin
g
le sta
g
e onl
y
the unused sta
g
e should be set as follows:-
Proportional Band
= 10,000
Integral Action Time
= 0
Derivative Action Time
= 0
Ramp Time
= 0
6. Maximum of 100 links between modules per IAC base unit.
MODULES AND FUNCTIONS
Bubbleland
Symbol Module Range Default
INPUT/OUTPUT MODULES
DIGITAL INPUT MODULE
x 8
Current State of Input
(
review onl
y)
This parameter displa
y
s the current input state.
On or Off –
Latch Input
This parameter allows the di
g
ital input to be latched so that a
momentar
y
input will switch the module on and a second input will
switch it off.
Yes or No No
Toggle
This parameter switches a latched input into the opposite state.
On or Off –
TEMPERATURE (RESISTIVE) INPUT MODULES
x 6
Current Measured Value
(
review onl
y)
This parameter displa
y
s the current input value in the selected units.
–40 to 150
°
C
–40 to 302
°
F
250 to 9750
Ω
0 to 10,000 Lux
–
Units Selection
This parameter selects the units that can be used for the input.
°
C,
°
F, Ohms or Lux
°
C
ANALOGUE INPUT MODULES (VOLTAGE)
x 6
Current Measured Value
as a percenta
g
e of 10 Volts
(
review onl
y)
0 to 100% –
DIGITAL (TRIAC) OUTPUT MODULES
x 8
Output State
(
review onl
y)
On or Off –
Override State
None, On or Off None
ANALOGUE OUTPUT MODULES
x 4
Current Output Value
as a percenta
g
e of 10 Volts
(
review onl
y)
0 to 100% –
Override Value
e.
g
. 0 = 0V, 50 = 5V, 100 = 10V
0 to 100% 0%
Enable Override
On or Off Off
MATHS MODULES
SUBTRACTION, MULTIPLICATION, DIVISION AND
ADDITION MODULES
x 8, total number of an
y
combination
These modules allow mathematical operations to be carried out on
values within the controller. Each module can accept two value inputs
and the module will produce a value output. The addition module is
shown, left.
SAMPLE AND HOLD MODULE
x 6
This module is used to sample an Analo
g
ue value when the Di
g
ital
input on the module is momentaril
y
switched on. The sample module
will then output the current sample value. The module will keep the
value until the next time the Di
g
ital input is set to on, at which point
another sample is taken.
NOTE:-
If the Di
g
ital input is left set at on, the output of the module will
follow the module input.
HYSTERESIS MODULE
x 8
This module is used to pass on a chan
g
e in value onl
y
when that
chan
g
e is
g
reater than the value set in the module. When a chan
g
e is
passed throu
g
h the di
g
ital output is switched on briefl
y
. This can be
used to drive the Lo
gg
in
g
module for event based lo
gg
in
g
.
Hysteresis
0 to 10,000 1
ANALOGUE SWITCH MODULE
x 6
This module switches an analo
g
ue output between two analo
g
ue
inputs. The switchin
g
is tri
gg
ered b
y
a di
g
ital input state. Possible
applications are sensor selection, override of fan speeds/actuator
position etc.
05/98 3 - 24 DS 2.951A