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Temperature Controller METICOM TM20 Module
⒃←/MODE key:
a) Parameter mode: Used for select adjustable digit.
b) Normal mode: Press it >1s to switch control mode :
Normal (Auto) \ Standby \ Manual \ AT (Auto Tune).
** New control mode will be active after 5s.
** When shift to AT mode, press SET key in 3sec. to start
auto-tuning, or the controller auto-back to normal mode.
c) Soft start process: Press it to terminate soft start (when boS=1).
d) BOOST function can be activated by pressing it after soft start process (when boS=1).
⒄DISP key:
a) Press it to switch load current / power output % display.
b) Press it to silence buzzer until new alarm happen.
c) Press it >9s to change sensor type.
⒅Mounting hole .
5. Operating modes
Normal mode:
After power on self-test, controller starts to work in normal mode.
PV displays present temperature value, and SV displays setting temperature value (Auto control) or power output
percent (Manual control).
Note: Auto/Manual control mode, and the output percent of Manual control when power on, see parameter “nSL”.
In this mode, you can
1) Change setting temperature value (Auto control) or setting power output percent (Manual control): Press ∧、∨、＜ to
modify the setting, and the modified value will become effective after 3sec., or press SET to make it effective at once.
2) Change setting temperature value (Auto control): Press SET to enter the setting temperature value adjustable state
(flashing), then press ∧、∨、＜ to change it and press SET to save it.
3) Enter the parameter mode: Press SET >1sec.
4) Switch control mode (Auto-Standby-Manual-AT): Press MODE >1sec.
** When shift to AT mode, press SET key in 3sec. to start auto-tuning, or the controller auto-back to normal mode.
5) Switch load current (Amps) or power output (%) display: Press DISP >1sec.
6) End soft start process: Press MODE (when boS=1).
7) Activate BOOST function: Press MODE (when boS=1, and soft start process end).
8) Change sensor type: Press DISP>9sec.
Parameter mode:
By pressing SET >1sec. in normal mode, the controller enters the parameter mode.
It displays parameter name and its value. In this mode, you can
1) Change the parameter value: Press ∧、∨、＜ to modify the value, and press SET to save it, then the next parameter
and its value are displayed.
2) Look over the parameters: Press SET to shift the parameters.
3) Exit the parameter mode with saving: Press SET >1sec.
If there’s any operation in 60sec., the controller will exit the parameter mode without saving automatically.
Alarm mode:
The controller displays the corresponding faulty code.
6.Control modes (selected by MODE key)
Normal (Auto PID) mode:
This type of control is a “closed-loop” system and requires a thermocouple feedback signal.
The controller’s PV displays present temperature value, and SV displays setting temperature value (power output % and
load current can be selected by DISP key).
The controller uses a PID algorithm to determine the required output power to hold the present temperature value equal
