Pid Auto-Tune - BriskHeat X2 Manuel D'instructions

Options [Factory settings]
Function
shown in brackets
SP2 Operating Parameters
SEt.2 0 to * °C/°F [0] 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 [2.0 °C/3.6°F] Adjust SP2 hysteresis or proportional band/gain (see CyC.2
setting)
* 25% sensor full scale
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
Options [Factory settings] shown in
Function
brackets
Manual Control Modes
SPI.P 0 to 100 % 'read only' Read SP1 output percentage power
SP1 manual percentage power control For manual control should
hAnd [oFF] 1 to 100 % (not in ON/OFF)
a sensor fail. Record typical SP1.P values beforehand.
Set SP1 power limit percentage Limits maximum SP1 heating
PL.1 100 to 0 % duty cycle [100]
power during warm-up and in proportional band.
PL.2 100 to 0 % duty cycle [100] Set SP2 percentage power limit (cooling)
SP2 Operating Modes
SP2.A [none] dV.hi dV.Lo bAnd FS.hi Main SP2 operating mode
FS.Lo Cool
SP2.b [none] LtCh hoLd nLin Subsidiary SP2 mode: latch/sequence ,Non-linear cool
proportional band
Input Selection and Ranging
dI.SP [1] 0.1 Select display resolution: for display of process temperature,
setpoint, OFSt, Set.2, hi.SC, LoSC
hi.SC sensor minimum [sensor Set full scale
maximum] °C/°F
Lo.SC [sensor minimum] sensor Set scale minimum (default 0°C or 32°F)
maximum °C/ºF
inPt [nonE] Select input sensor (See SENSOR SELECTION table)
Unit [nonE] °C °F bAr Psi Ph rh Select °C/°F or process units
LEVEL 3
Options [Factory settings] shown in
Function
brackets
Output Configuration
SP1.d [nonE] rLY SSd Select SP1 output device
Note: 'Read only' after initial configuration. rSET ALL full reset to
factory settings required to change SP1.d subsequently.
SP2.d [nonE] SSd rLY Read SP2 output device (read only)
burn SP1 / SP2 Sensor burn-out/break protection
[uP.SC] Upscale / Upscale
dn.SC Downscale / Downscale CAUTION: Settings affect fail safe state.
1u.2d Upscale / Downscale
1d.2u Downscale / Upscale
rEu.d SP1 / SP2 Select output modes: Direct/Reverse
[1r.2d] Reverse / Direct Select Reverse on SP1 for heating and Direct for cooling
1d.2d Direct / Direct applications.
1r.2r Reverse / Reverse
1d.2r Direct / Reverse CAUTION: Settings affect fail safe state.
®
© BriskHeat Corporation. All rights reserved.
X2 Benchtop
PID Digital Temperature Controller
Description
Description
Description
11
Options [Factory settings]
Function
shown in brackets
rEu.L
SP1 / SP2 Select SP1/2 LED indicator modes
[1n.2n] Normal Normal
1i.2n Invert Normal
1n.2i Normal Invert
1i.2i Invert Invert
SPAn [0.0] to ±25% sensor Sensor span adjust
maximum For recalibrating to align readings with another instrument e.g.
External Meter, data logger. See Full Operating Manual
(ADVANCED SETTINGS).
ZEro [0.0] to ±25% sensor f/s Zero sensor error (see Sensor span adjust above).
ChEK [oFF] on Select control accuracy monitor
rEAD [Var] hi Lo Read control accuracy monitor
tECh [Ct A] CT b Ct 1 Ct 2 Ct 3 Ct 4 Read Autotune tuning cycle data (see Operating Manual)
oS 1 uS oS 2
UEr
Software version number
rSET [nonE] ALL
Resets all functions to factory settings
CAUTION: This selection will lose all of the current settings.

PID Auto-Tune

This is a single shot procedure to match a controller to the process. Select either Tune or Tune
at Setpoint from the criteria below.
Use Tune function when the load temperature is at or near ambient. This function applies
disturbances when the temperature reaches 75% of the set point value, causing an overshoot
and then adjusts the DAC overshoot inhibit value. Ensure an overshoot is safe for the process.
The Tune at Setpoint function is recommended when:

The process is at set point and control is poor

The set point is less than 100°C

Re-tuning after a large set point change

Tuning multi-zone and/or heat-cool applications.
Note
: DAC is not re-adjusted by Tune at setpoint.
Proportional Cycle Time can be pre-selected before running the Autotune program
The symbol (▲▼) signifies both buttons are held pressed for 3 seconds to ENTER or EXIT
program mode.
STEPS TO TUNE OR TUNE AT SETPOINT PROGRAM
Enter program (▲ ▼) and from the display tunE : oFF press and hold Þ and press ▲ to display
tunE : on or tunE : At.SP
Exit program mode (▲ ▼).
The TUNE program will now start. The display will show tunE as the process temperature climbs
to setpoint.
Note: During tuning, the main setpoint (SP1) LED will flash.
®
© BriskHeat Corporation. All rights reserved.
X2 Benchtop
PID Digital Temperature Controller
Description
12
.