Mitsubishi FX3U Series User Manual

FX3U Series Programmable Controllers
User’s Manual - Hardwaer Edition
85
6 Examination of System Configuration
6.5 Expansion of Main Unit (Calculation of Current Consumption)
1
Introduction
2
Features and Part Names
3
Product Introduction
4
Specifications
5
Version and Peripheral Devices
6
System Configuration
7
Input/Output Nos., Unit Nos.
8
Installation
9
Preparation and Power Supply Wiring
10
Input Wiring
6.5 Expansion of Main Unit (Calculation of Current Consumption)
The amount of connectable extension equipment to the main unit varies, depending on the power supply type
(AC/DC). For each power supply type, follow the instructions below.
AC power type main unit
• When only input/output extension devices are added, use the quick reference matrix.
→ Refer to Subsection 6.5.1 "Quick reference matrix - when only input/output devices are added (AC
Power Type)".
Caution
Except FX
2N-8ER and FX2N-8ER-ES/UL.
• When special extension devices, FX
2N-8ER or FX2N-8ER-ES/UL are added, calculate the current
consumption to ensure that the total current to be consumed by the added extension devices can be
supplied by the built-in power supply.
→ Refer to Subsection 6.5.2 "When special extension devices are also added [calculation of current
consumption] (AC Power Type)".
DC power type main unit
• When only input/output extension devices are added, use the quick reference matrix.
→ Refer to Subsection 6.5.3 "Quick reference matrix [when only input/output devices are added] (DC
Power Type)".
Caution
Except FX
2N-8ER and FX2N-8ER-ES/UL.
• When special extension devices, FX
2N-8ER or FX2N-8ER-ES/UL are added, calculate the current
consumption to ensure that the 5V DC and the internal 24V DC power can supply the total current by the
added extension devices.
When the added extension devices include FX
0N-3A, FX2N-2AD, FX2N-2DA, FX3U-4HSX-ADP or FX3U-
2HSY-ADP, calculate the current consumption (internal 24V DC) at startup.
→ Refer to Subsection 6.5.4 "When special extension devices are also added [calculation of current
consumption] (DC Power Type)".
6.5.1 Quick reference matrix - when only input/output devices are added (AC Power Type)
In the following quick reference matrix, the value at the intersection of the number of input points to be added
(horizontal axis) with the number of output points to be added (vertical axis) indicates the remaining power
supply capacity.
Caution
When FX
2N-8ER and FX2N-8ER-ES/UL are added, refer to Subsection 6.5.2.
1 Select the input/output extension block (number of points) to be connected
to the main unit.
Check that the number of input/output points can be added.
When connecting the FX
3U-1PSU-5V extension power supply unit to a system where the nearest
upstream unit to the FX
3U-1PSU-5V is a main unit, include the current consumption by the input
extension blocks connected to the FX
3U-1PSU-5V when calculating the total current consumption
of the main unit.

Mitsubishi FX3U Series Specifications

General

Model	FX3U Series
Program Memory	64k steps
Execution Speed	0.065 μs/basic instruction
Type	PLC (Programmable Logic Controller)
Power Supply	100-240V AC
I/O Points	Up to 384
Communication	USB
Expansion	Supported via expansion modules
High-Speed Counters	Up to 6 channels
Analog Input/Output	Available via expansion modules
Temperature Range	0 to 55°C
Programming Language	Ladder Logic, Structured Text
Built-in Functions	PID control
Humidity	5 to 95% (non-condensing)