Terminal Layout; Interpretation Of Terminal Block Layout - Mitsubishi Electric MELSEQ FX3S Series User Manual

FX Series Programmable Controllers
3S
User's Manual - Hardware Edition
4.7

Terminal Layout

The terminal layout of the main unit are explained.
4.7.1

Interpretation of terminal block layout

Power supply terminals
S/S
L N S/S
FX -30MR/ES, FX
3S
0V Y0
24V COM0 COM1 COM2
24 V DC service
power supply
• Indication of power supply terminals
The AC power supply type has [L] and [N] terminals.
The DC power supply type has [
For external wiring, make sure to read the power supply wiring described later.
• Indication of 24 V DC service power supply
The AC power supply type has [0V] and [24V] terminals, whereas the DC power supply type shows [•]
since the DC power supply type does not have the service power supply.
[•] represents vacant terminals.
Do not connect with vacant terminals.
For external wiring, make sure to read the power supply wiring described later.
• Indication of input terminal
Both AC and DC power supply type have the same input terminals, however, the external input wiring
differs from each other.
For external wiring, make sure to read the input wiring described later.
• Indication of output terminals connected to common terminal
One common terminal covers 1 or 4 output points.
The output numbers (Y) connected to a common terminal are enclosed with heavy partition lines.
For transistor output (source) type, [COM] is [+V].
4 Specifications, External Dimensions and Terminal Layout (Main Units)
Input terminals
S/S X1 X3 X5 X7
X0 X2 X4 X6 X10
-30MT/ES
3S
Y1 Y2 Y4 COM3 Y7
Y3 Y5 Y6 Y10 COM4
Output terminals
Common terminal
(4 points/common terminal)
] and [
X11 X13 X15 X17
X12 X14 X16
[•] Vacant terminal
Output terminals
(Do not use.)
connected to COM4
Y11 Y12 Y14 •
Y13 Y15
Partition
] terminals.
4.7 Terminal Layout
→ Refer to Chapter 8.
→ Refer to Chapter 8.
→ Refer to Chapter 9.
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