Eng; Offset Adjustment - Mitsubishi alpha 2 Hardware Manual

α
2 Simple Application Controllers
12.4.4

Offset Adjustment

Note
If Gain adjustment is complete, then step 3 - 7 are not needed.
1) To begin the offset calibration for channel 1, turn off the power to the α2 controller and the
AL2-2PT-ADP, remove the temperature sensor and shorten the pins L1- and I1-.
2) Remove the top cover from the jumper area and move the jumper to the pins labeled -50°C
as in "Hardware Setup" below. The external wiring should be performed as in the Hardware
Setup below.
Caution
The jumper should be installed correctly, otherwise, on occasion
electrical contact may not occur.
Figure 12.5: AL2-2PT-ADP Offset Adjustment
3) Turn the power on and select "Others..." from the TopMenu while in Stop Mode.
4) Select "Analog In" from the "Others..." menu.
5) Select the Input that is connected to the AL2-2PT-ADP module.
Hardware Setup
-50°C -50°C
L1+ L1- I1-
Controller Setup
Ca l i b r a t e
- 5 0 ° C
2 0 0 ° C
AL2-2PT-ADP 12
TOP
Bottom
OK
T o p M e n u
C l o c k S e t
L A N G U A G E
O t h e r s . . .
O t h e r s . . .
L i g h t T i me
A n a l o g I n
P r o g C l e a r
A n a l o g I n
I 0 1
I 0 2
I 0 3

ENG-67

ENG