Omron DRT2 SERIES DEVICENET SLAVES - OPERATION MANUAL 04-2008 Operation Manual page 451

Temperature Input Terminals
Adjustment Procedure for
the DRT2-TS04T
Prepare the device that requires adjustment.
Connect the device that requires adjustment.
When performing upper/lower limit adjustment,
open end of the cold junction compensator to
disable it.
Turn ON the power to the associated system
devices. Wait at least 30 minutes for the
DRT2-TS04T's internal temperature to
stabilize.
Set the input's lower limit adjustment value.
Set the input's upper limit adjustment value.
Prepare to adjust the bias compensation.
Short the leads of the cold junction
compensator and wait at least 40 minutes for
the temperature to stabilize.
A cold junction compensator and
compensating conductor are required for the
thermocouple being adjusted.
Set the input's bias compensation.
Yes
Test indication accuracy after adjustment.
430
Use the following procedure to adjust the Temperature Input Terminal. Follow
the flowchart closely for proper adjustment.
First
No
adjustment?
Yes
Adjust other
inputs?
No
End
Note The only sensors that can be adjusted are ones that operate while the power
supply is ON. When adjusting for sensors that are not presently in use,
change the input type setting, toggle the power supply or reset the Unit from
the Configurator, and perform the adjustment procedure from the beginning of
the flowchart.
This stabilization time is the time required
when the power is turned ON for the first time.
This step can be skipped when adjusting the
second and following inputs.
Refer to the Operating Manuals for the other
devices in the system for details on their
required stabilization times, if any.
When the first input is being adjusted and 30
minutes have already passed for stabilization,
wait just 10 minutes more.
Section 7-6