Gain Adjustment - Mitsubishi alpha 2 Hardware Manual

α
2 Simple Application Controllers
6) Configure the input for temperature sensing with the AL2-2TC-ADP module by selecting
"Mode" and choosing "TC" from the following screen
7) After setting the mode to "TC", select "Calibrate" from the Analog input settings menu.
8) Select "-50°C" from the Calibrate menu as in "Controller Setup" in the figure 13.5 and press
OK. There should be a confirmation message that reads "OK." If not, refer to the Applicable
Error Checks section below. This completes the offset calibration procedure. To calibrate
the offset for channel 2, repeat the steps above replacing L1-, L1+ and SLD with L2-, L2+
and SLD respectively. When the calibration is finished, move the jumper to the "LINE" pins.
Figure 13.6: Jumper position after calibration
It is usually necessary to perform the Gain Adjustment when performing the Offset
Adjustment. See section 13.4.5 for more details.
13.4.5

Gain Adjustment

Note
If Offset adjustment is complete, then step 3 - 4 are not needed.
1) To begin the gain calibration for channel 1, turn off the power to the α2 controller and the
AL2-2TC-ADP and remove the temperature sensor. The pins L1-, L1+ and SLD should be
left unconnected.
I 0 1
Mo d e
Hardware Setup
LINE LINE
AL2-2TC-ADP 13
I 0 1
No r ma l
TC
PT 1 0 0
I 0 1
M o d e
C a l i b r a t e
O f f s e t f i n e
ENG-80