Omron EJ1G, User Manual

Page: 65 / 237

44
Setup Procedure
Section 3-1
AT is executed when set to RUN and AUTO modes. AT can also be execut-
ed for individual channels in a group.
a. Check that the channels for which AT is to be executed are in RUN and
AUTO modes.
Read the status of the channels for which AT is to be executed and
check that bit 0 (RUN/STOP) is OFF (RUN) and bit 1 (AUTO/MANUAL)
is OFF (AUTO).
If these conditions are not met by a channel, execute operation com-
mands for that channel and set to RUN and AUTO modes.
b. Execute an operation command to execute AT for the desired channel.
40% AT Execute and 100% AT Execute options are available. Refer to
page 78 for information on the operation differences between the two.
Channel status bit 2 (AT Execute/Cancel) will be ON during AT.
Example: Tuning Channel 14 in Group 4 (2-PID Control)
c. Execute an AT Execute operating command for channel 14.
Wait until the AT Execute/Cancel bit turns OFF.
AT has been completed when this bit turns OFF. Read the PID for the
corresponding channels and check that the values have been re-
freshed.
Note An error will occur if a mixture of gradient temperature control and
2-PID control is used and GT or AT is executed for all channels. Ex-
ecute GT or AT for individual groups if a mixture of gradient temper-
ature and 2-PID control is used.
Note Execute AT for one channel at a time if optimum control perfor-
mance is required.
12. Check the Heater Burnout Alarm status.
The heater burnout alarm (HB) is checked by checking the status of the
Channel Alarm Status bit. The heater current is checked by checking the
status of the Heater Current Value Monitor bit.
H
F
U
E
D
U
0 1 2 3 4 5 6
TC2
CH1
CH2
TC2 TC2 TC2 TC2 TC2
CH3 CH6 CH9 CH11 CH14
CH5 CH7 CH10 CH13 CH15