Remove the connector cover.
(Do not lose the cover.)
Expansion
connector
LA-A1AW
LB-A1AW
DP-DN
20mA
①
■
Current consumption
■
Conditions for extension
common
LA-A1AW
LB-A1AW
16 points
③
16 points
②
■
I/O points
4-20mA
4-20mA
1-5V
4-20mA
4-20mA
Other conditions:
-L*A1AW 5/12-
[Installation]
[Removal]
[Installation Location]
D
A
A
Upper side
Upper side
D
B
G
Base Extension
[Precautions when Using]
C
A
The installation and removal methods are the same for both the base
unit and the extension unit.
Put the moving claw on the A side on the DIN rail.
Push down on fixed latch D on the opposite side until you hear a click.
Push this product in direction B, removing fixed latch D from the DIN rail.
Lift up straight in direction G, lifting and removing the product.
- Location where this product is not directly subject to vibration or shock
- Location where this product is not directly exposed to dust
- Location where this product is not directly exposed to a conductor, such as
waste metal or sputter
- Location without condensation
- Location where the atmosphere is free of corrosive gas, flammable gas, and
sulfur
- Location far from high-voltage or high-current cables
- Location far from cables and controllers that generate servo, inverter, or other
high-frequency noise
If connecting this unit to a transmission line or expanding the base unit with an
extension unit, do so with supply of the transmission signal stopped.
Performing connections while wires are live may cause the unit to detect
chattering as an error upon connection and stop.
If installing vertically, bring the
movable latch below the DIN rail.
[Expansion]
An extension unit or power supply unit can be extended to a base unit
for this analog input unit.
Remove the connector cover of the base unit and connect the
extension unit with a built-in extension connector. (Power supply unit
→
Refer to P6)
Decide the maximum number of extended devices within the range
meeting the conditions below.
Extension
Base
Example)
(1) Considering based on the limit of I/O points
LA-A1AW: Input 16 points × 1 device
②
,
LB-A1AW: Input 16 points × 7 devices
③
Maximum input points: 256 points
⑦
÷ 16 points = 16
16 × 1 + 16 × 7 = 128
≦
256 points
⑦
(Maximum number of input points)
(2) Reviewing based on the limit of DP-DN current consumption per block
LA-A1AW: 20 mA × 1 device
①
, LB-A1AW: 20 mA × 7 devices
①
In other words, LA-A1AW: (1 device × 20 mA), LB-A1AW (7 devices × 20 mA = 140 mA)
Therefore, 20 mA
＋
140 mA = 160 mA
≦
800 mA
⑤
→
No problem
(3) Reviewing based on the limit of 24V-0V current consumption per block
Analog sensor: 50 mA × 8 devices
⑥
⑨
In other words, analog sensor: (8 devices × 50 mA = 400 mA)
(4) Reviewing based on the limit of DP-DN current consumption per system
Eight devices consisting of LA-A1AW: 1 device and LB-A1AW: 7 devices
→
160 mA
①
Therefore, 400 mA
≦
800 mA
⑥
→
No problem
Therefore, 160 mA
≦
2 A
⑧
→
No problem
31
④
DP-DN: 800 mA or less
⑤
24V-0V: 800 mA or less
⑥
The maximum number of extended devices in
connecting the base unit to the extension unit or
power supply unit
Total DP-DN current consumption for 1 block
(base unit + extension unit)
Input: 256 points or less
⑦
Output: 256 points or less
50 m/1.25 mm
2
: 2 A
⑧
(Refer to P2)
■
Conditions for 1 system
Make sure the total number of I/O points of
connected devices does not exceed the maximum
transmission points per one system by master setting.
Make sure the total DP-DN consumption of
connected devices does not exceed the maximum
allowable supply current per one system.
Transmission conditions: Transmission distance (total extension), transmission distance
diameter 1.25 mm
2
, I/O 256 points respectively
Device conditions: Only 1 LA-A1AW and 7 LB-A1AW are connected.
Analog sensor 24V Current consumption 50 mA × 8 devices
⑨
Total power supply unit 24V-0V current
consumption used for 1 block above
Mixed-connection of LB-A1AW and LB-A12W is possible to
LA-A1AW. The range of each channel can be mixed.
LB-F1011 cannot be connected.
