7
FUNCTION LIST (LEVELS 1 to 4 and A)
Note:
A Functions Menu is shown on page 3.
LEVEL 1
Function
Options
[Factory settings] shown in brackets
SELECT AUTOTUNE
(see pages 4/5)
tunE [oFF]
on PArK At.SP
Used to switch the Autotune feature on and off, to select
PArK
or Autotune at setpoint.
PArK
temporarily turns the output(s) off. To use select
PArK
and exit program mode. To
disable re-enter program at
tunE
and select
oFF
.
SP1 OPERATING PARAMETERS
bAnd
0.1 to * C/°F
[10ºC/18ºF/100 units]
SP1 proportional band/Gain or Hysteresis
* 100% (
Hi.Sc
) sensor maximum Proportional control eliminates the cycling of on-off
control. Output power is reduced, by time proportioning action, across the proportional
band.
int.t oFF
0.1 to 60 minutes
[5.0]
SP1 integral time/reset
Auto-corrects proportional control offset error
dEr.t oFF
1 - 200 seconds
[25]
SP1 derivate time/rate
Suppresses overshoot and speeds response to disturbances
dAC
0.5 - 5.0 x bAnd
[1.5]
SP1 derivative approach control dAC
Tunes warm-up characteristics, independent of normal operating conditions, by adjusting
when derivative action starts during start-up (smaller dAC value = nearer setpoint).
CyC.t A – – on.oF
0.1 - 81 sec
[20]
SP1 proportional cycle-time
(see pages 9/10)
Determines the cycle rate of the output device for proportional control. Select
on.oF
for
ON/OFF mode.
oFSt
0 to * °C/°F/units
[0]
SP1 offset/manual reset
* ±50%
bAnd
. Applicable in proportional and ON/OFF mode with integral disable:
Int.t : oFF.
SP.LK [oFF]
on
Lock main setpoint
Locks the setpoint preventing unauthorised adjustment.
SP2 OPERATING PARAMETERS
(see page 6)
Function
Options
[Factory settings] shown in brackets
SEt.2
[
0] to * °C/°F/units
Adjust SP2 setpoint
* Deviation Alarms
DV.hi, DV.Lo, bAnd
25% sensor maximum.
* Full scale alarms
FS.hi, FS.Lo
sensor range f/s
bnd.2
0.1 - * °C/°F/units
[2.0 °C/3.6°F 2 units]
Adjust SP2 hysteresis or proportional band/gain
(see
CyC.2
setting)
* 100% sensor f/s (
Hi.Sc
)
CyC.2 [on.oFF]
0.1–81 seconds
Select SP2 ON/OFF or proportional cycle-time
Select on.oFF for ON/OFF mode, or the cycle rate of SP2 output device for proportional
mode.
LEVEL 2
MANUAL CONTROL MODES
Function
Options
[Factory settings] shown in brackets
SPI.P
0 to 100 % ‘read only’
Read SP1 output percentage power
hAnd [oFF]
1 to 100 % (not in ON/OFF)
SP1 manual percentage power control
For manual control should a sensor fail. Record typical
SP1.P
values beforehand.
PL.1
100 to 0 % duty cycle
[100]
Set SP1 power limit percentage
Limits maximum SP1 heating power during start-up and in proportional band.
PL.2
100 to 0 % duty cycle
[100]
Set SP2 percentage power limit (cooling)
SP2 OPERATING MODES
(see page 5)
SP2.A [nonE]
dV.hi dV.Lo bAnd FS.hi FS.Lo Cool EoP
Main SP2 operating mode
SP2.b [nonE]
LtCh hoLd nLin
Subsidiary SP2 mode: latch/sequence
Non-linear cool proportional band
LEVL 1
✢
✢
Will be affected by
dECP
settings in Level A
✢
LEVL 2
✢
✢
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