<2. WIRING AND INSTALLATION>
2-14
IM 12A01F01-02EN 2nd Edition : Feb. 19, 2019-00
n mA input
This describes a wiring when the sux code for mA Output/Input is -A4.
FLXA 402 receives 4-20 mA analog signals inputs of pressure compensation for DO sensors, or
of temperature compensation for pH, SC, ISC, DO sensors.
Use shielded cable for input signal cable and connect the shield to terminal 89. Rated voltage
of cable is 30 V AC or greater. For wiring use multicore shielded cable. Screws for IO module
terminals are all M3 with washers.
Terminal
number
Contact
terminals
Description
87 AI+ 4-20 mA input +
88 AI-- 4-20 mA input-
89 SHILD Shield
Figure 2.14 IO module terminal assignment
n Contact input
IO module contains contact input function which is for starting WASH CYCLE or changing
RANGE of 4-20 mA output.
For input signal cable, use shielded cables. Connect the shield to terminal 63.
All screws are M3 with washers.
Terminal
number
Contact
terminals
Description
21 Dl1 Contact input 1
22 COM Contact input common
24 DI2 Contacct input 2*1
63 SHILD Shield
*1 when mA IO code -A4 is selected
Figure 2.15 IO module terminal assignment
When all wiring is complete, close the FLXA402 front cover, and turn the power on.
Check that the screen displays normally.
CAUTION
To install the front panel, tighten each screw evenly until every four of them is completely
fastened. For example turn each screw in two times and repeat it until all of the screws are evenly
tightened up
Do not use an electric screwdriver with high revolutions such as 1000 rpm. The revolutions of the
electric screwdriver should be less than 400 rpm.
Four front panel screws should be tightened to the following torque; 1.5 to 1.6 N•m
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