- 2 -
NJI-669(X)
Installation environment
Avoid the following locations to install the PLC.
- Excessive dusts, salty air, or conductive materials (iron
powder, etc.)
- Direct sunlight.
- Temperature less than 0
C or more than 55
C.
- Humidity less than 5 % or more than 95 %.
- Dew condensation.
- Direct vibration or impact to the unit.
- Corrosive, explosive or combustible gases.
- Water, chemicals or oil splashing on the PLC.
- Close to noise emission devices.
Outline
These products are option board for MICRO-EHV+ series.
Although being small size, I/O circuits are isolated from
internal circuits, and these products have equivalent
performance with analog expansion unit and RTD
expansion unit. There are three models as the following
table.
Product
name
Model
name
Specifications
Analog input
option board
OBV-AIG
・
4 Channels of analog input
Analog I/O
option board
OBV-AIOG
・
2 Channels of analog input
・
2 Channels of analog output
RTD input
option board
OBV-RTD
・
4 Channels of RTD input
(2 Channels for 3-wire)
Reference Manual
Read the following application manual carefully to use the
PLC safely and properly. Be sure to keep the latest version.
Manual name
Manual
number
MICRO-EHV+ APPLICATION MANUAL
NJI-611*(X)
The postfix of the publication number is subject to change
for revision.
Installation
!
CAUTION
- Do not attach or detach an option board with power
applied to MICRO-EHV+, otherwise this could result in
damaging module or malfunction.
(1) Remove the cover A and B.
A
C
B
A
B
C
A
B
A
(2) Set DIP switches of the back side of the option board
according to
“
Setting of the DIP switches” of the later
page. But there is no DIP switch in OBV-RTD, so it is no
need to do for OBV-RTD.
A
DIP switches
(3) Insert an option board to a basic unit as below picture.
Insert pressing down the connector area case of an
option board.
A
C
C
(4)
Attach the cover A.
Since the cover B becomes unnecessary, please keep it.
A
