At (Expansion Mode) - Omron CQM1H series Operation Manual

AT (Expansion Mode)

3-6

AT (Expansion Mode)

Left-side View of the Unit
SW1
MODE
Change this connection.
SP
0
272
To enter the Expansion Mode, change the connection of jumper connector from
2-3 to 1-2.
TEST
Do not change this connection. This is for factory-use only.
By executing AT (auto-tuning), the most suitable PID parameters can be set.
The AT function allows PID parameter calculation by recognizing the character-
istics of the object from the waveform (amplitude and period) to be generated
when ON/OFF control is executed (refer to the following diagram). The PID pa-
rameters obtained will be refreshed automatically, and after completion of auto-
tuning, the Temperature Control Unit will start operating using the parameters.
Auto-tuning starts
Auto-tuning can be started by taking the following procedure on the Program-
ming Console.
Default: SP = 100 °C and PV = 98 °C
MODE
1
Change the connection to 1-2
MODE
1
Limit period with 100%
controlled variation width
Auto-tuning completes
Section 3-6
Default setting
3
Expansion Mode
3