System Configuration Example 1 - Mitsubishi FX3UC SERIES User Manual

FX Series Programmable Controllers
3UC
User's Manual - Hardware Edition
9.6.4

System configuration example 1

In this system configuration example using only dedicated flat cables, both the current consumption and the
voltage drop are small.
System configuration example
FX -32MT-LT
UC
3
(Built-in master+
Built-in power supply)
Terminating
resistor
Station a)
100mA
1) Current consumption calculation
Total current consumption
100mA 60mA
station station
a)
2) Voltage drop calculation
(29m (95'1")
Maximum distance : From the main unit to the farthest station, station d)
3) Confirmation related to the minimum operating voltage (20.4V DC) of the module
24V - 2.612V = 21.388V
From 1), 2) and 3) above, the system can be configured using only the built-in
power supply with regard to both the current and voltage restrictions.
24V DC
General-purpose
power supply
Power supply
5m 5m
Station b)
60mA
80mA 60mA
station station
b) c) d)
Constant : 55) Constant : 0.06
5m (16'4") 5m (16'4")
≥
20.4V
9 CC-Link/LT Built-in master ability (Only FX3UC-32MT-LT)
9.6 Selection of the power supply for CC-Link/LT
- The current consumption of each station shall include the
current consumption of the connected I/O equipment.
- It is supposed that the general-purpose power supply
satisfies the required condition.
10m
Station c)
80mA
300mA 0.30A 0.35A
0.3A 1.1V
5m (16'4") 10m (32'9")
0.5m
Terminating
resistor
Station d)
60mA
OK!!
2.612V 3.6V OK!!
4m (13'1") 29m (95'1")
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