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Below is the shortened text version of the temperature controller LTC15 that we use in the Vacuum Heat Press
Do not attempt to set-up or change the settings without good reason or knowledge as this can result in the press overheating and grossly incorrect temperature readings. There is a maximum set temperature for the hot press and this must not be changed without consulting us. Contact us Heatpress Contact Page
The full PDF is Here ( click to view, right click as save target to download )
LTC15
Control Parameters.
The regulator is adapted to the controlled system by suitably programming its configuration parameters from the setup menu.
The instrument comes with a general setup and cannot therefore be used without having first checked that the parameters are correct. Setup is accessed by keeping the buttons + O/1 pressed for 5 seconds. The available parameters appear in TABLE1 shown below. The LTC15 features an easier parameter programming procedure: just the parameters specific to the control mode selected are displayed, in this way programming of the controller will be easier and quicker. Use the keys (t) / (u) to pass from one parameter to the next / previous one. To display the correlated value press key , to change it press + t or usimultaneously. Press the key O/1 to exit from setup; if the keypad is not touched for 30 seconds, exit is automatic.
The set point 1SP and set point / differential 2SP/2DF may also be displayed and programmed during normal regulator operation. To modify set point of channel 1 press and release key L1 : the LED L1 starts to blink, the display will show 1SP for 1 second then the value associated to the set point; to change this value press (t) or (u), the set point in any case remains within the limits SPL and SPH.
To save the new value and switch back to the normal operation, press or do not touch the keypad for 10 seconds; to revert back to normal operation without saving the newly programmed value just press (O/1)
To change the set point/differential of channel 2 press and release key : the LED L2 starts to blink, the display shows 2SP for 1 second, if the sepoint2 is an absolute value, alternatively the display shows 2DF if the setpoint2 is a relative value referred to 1SP. The display will then show the associated value: to modify the displayed value press (t) or (u); to save the newly programmed value and switch over to normal operation press key or do not touch the keypad for 10 seconds; to switch over to the normal operation without saving the newly programmed value, just press key O/1.
Table 1
INP |
PTC/NTC |
Input selection |
1CT |
1…255[s] |
Cycle time channel 1 |
SCL |
1ºC/2ºC/ºF |
Reading scale |
1PF |
ON / OFF |
Channel 1 status with faulty sensor |
RLO |
-199…RHI[º] |
Minimum range value |
2CH |
NO / THR / ALR |
Control mode channel 2 |
RHI |
RLO…999[º] |
Maximum range value |
2FN |
H / C |
Function of channel 2 (heating/cooling) |
SPL |
-199…SPH[º] |
Minimum temperature set point |
2MD |
ABS / REL |
Mode set point 2 (Absolute/Differential) |
SPH |
SPL…999[º] |
Maximum temperature set point |
2SP |
SPL…SPH [º] |
Effective temperature set channel 2 |
1CH |
HY / PID |
Control type channel 1 |
2DF |
-199…199[º] |
Temp. differential set2 to set1 |
1FN |
H / C |
Function of channel 1 (heating/cooling) |
2HY |
-199…199[º] |
Hysteresis channel 2 |
1SP |
SPL…SPH [º] |
Effective temperature set of channel 1 |
2CT |
1…255[s] |
Cycle time channel 2 |
1HY |
-199…199[º] |
Hysteresis channel 1 |
2PF |
ON / OFF |
Channel 2 status with faulty sensor |
1PB |
-199…199[º] |
Proportional band channel 1 |
SB |
YES / NO |
Button standby enabling |
1IT |
0…999[s] |
Integral action time channel 1 |
OS1 |
-120…120[º] |
Probe offset |
1DT |
0…999[s] |
Derivative action time channel 1 |
SIM |
0…100 |
Display slowdown |
1AR |
0…100% |
Reset of integral action referred to Pb1 |
ADR |
1…255 |
Peripheral address |
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