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4. Wiring
Caution:
Cut off all phases of power source before installing / removing or performing wiring work on
the expansion board in order to avoid electric shock or damage of product.
Note:
•
Do not lay signal cable near to high voltage power cable or house them in the same
trunking duct. Effects of noise or surge induction may occur. Keep signal cables a safe
distance of more than 100 mm (3.94") from these power cables.
•
Ground the shied wire or the shield of a shielded cable. Do not, however, ground at the
same point as high voltage lines.
•
Never solder the end of any cables.
Make sure that the number of connected cables is not more than the unit has been
designed for.
•
Never connect cables of a non permitted size.
•
Fix cables so that any stress is not directly applied on the terminal block or the cable
connection area.
•
Tighten the terminals to a torque of 0.5 ~ 0.6 N m. Do not tighten terminal screws
exceeding the specified torque. Failure to do so may cause equipment failures or
malfunctions.
4.1 Applicable cables
•
Use AWG26 ~ 16 for connection with input.
•
Tighten the terminals to a torque of 0.5 ~ 0.6 N m. Do not tighten terminal screws exceeding the
specified torque. Failure to do so may cause equipment failures or malfunctions.
•
When using a different type of cable, defective contact at the terminal is possible. Use a crimp
terminal to achieve a good contact.
Table 4.1: Liner and Sectional Area
Sectional
Linear
Area (mm
AWG26
0.1288
:
:
:
:
AWG16
1.309
4.2 Wiring
The channel not used is short-circuit and uses the terminal "V +" and the terminal "VI-". The channel
number enters " ".
Voltage input mode (0 ~ 10V)
Grounding
resistance
100Ω or less
Current input mode(4 ~ 20mA)
Grounding
resistance
100Ω or less
*1 Connect a 0.1 ~ 0.47µF at 25V DC capacitor in position"*1" when there is voltage ripple in the voltage
input or there will be a lot of noise.
*2 For current input, short circuit "V +" and "I +" as shown in the diagram.
5. Example Program
Analog amount (0 ~ 10V, 4 ~ 20mA) input to each channel is stored in data registers (D8112, D8113) as
digital values. The values are stored automatically at each END instruction and calculated using the
analog to digital conversion characteristic, specified with special auxiliary relays M8112 and M8113.
5.1 Allocated Device
Table 5.1: Allocation of Device
Device
Switch of input mode of Ch1 flag
M8112
OFF:
ON:
Switch of input mode of Ch2 flag
M8113
OFF:
ON:
2
)
Stranded cable: Remove sheath, twist
core wires, then connect cable.
Single cable: Remove sheath, then
connect cable.
V +
*1
I +
V +
I +
*2
VI-
Voltage input mode (0 ~ 10V)
Current input mode (4 ~ 20mA)
Voltage input mode (0 ~ 10V)
Current input mode (4 ~ 20mA)
Terminal
180kΩ
250Ω
AG
120kΩ
180kΩ
250Ω
AG
120kΩ
Description
6mm
(0.23")
FX
-2AD-BD
1N
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