© BriskHeat®Corporation. All rights reserved.
11
X2 Benchtop
PID Digital Temperature Controller
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.
Function Options [Factory settings]
shown in brackets Description
Function Options [Factory settings] shown in
brackets Description
Manual Control Modes
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 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
FS.Lo Cool Main SP2 operating mode
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
maximum] °C/°F Set full scale
Lo.SC [sensor minimum] sensor
maximum °C/ºF Set scale minimum (default 0°C or 32°F)
inPt [nonE] Select input sensor (See SENSOR SELECTION table)
Unit [nonE] °C °F bAr Psi Ph rh Select °C/°F or process units
LEVEL 2
Function Options [Factory settings] shown in
brackets Description
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
[uP.SC]Upscale / Upscale
dn.SC Downscale/ Downscale
1u.2d Upscale / Downscale
1d.2u Downscale / Upscale
Sensor burn-out/break protection
CAUTION: Settings affect fail safe state.
rEu.d SP1 / SP2
[1r.2d] Reverse / Direct
1d.2d Direct / Direct
1r.2r Reverse / Reverse
1d.2r Direct / Reverse
Select output modes: Direct/Reverse
Select Reverse on SP1 for heating and Direct for cooling
applications.
CAUTION: Settings affect fail safe state.
LEVEL 3
© BriskHeat®Corporation. All rights reserved.
12
X2 Benchtop
PID Digital Temperature Controller
rEu.L SP1 / SP2
[1n.2n] Normal Normal
1i.2n Invert Normal
1n.2i Normal Invert
1i.2i Invert Invert
Select SP1/2 LED indicator modes
SPAn [0.0] to ±25% sensor
maximum
Sensor span adjust
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
oS 1 uS oS 2 Read Autotune tuning cycle data (see Operating Manual)
UEr Software version number
rSET [nonE] ALL Resets all functions to factory settings
CAUTION: This selection will lose all of the current settings.
Function Options [Factory settings]
shown in brackets Description
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.