Mitsubishi Electric MELSEC iQ-F Series Handbook page 56

Precautions Regarding the Hardware
Comparison of FX3U and FX5UJ and Precautions for Replacement
The following list shows precautions of the hardware. Check details in the manuals of each model when replacing existing
models.
■Difference and precautions regarding the main hardware of FX3U and FX5UJ
Item
Extension of FX2N and FX3U
Input hardware filter
(When the digital filter is 0)
• High-speed counter
• Input interruption function
• Pulse catch function
Input signal current
■External dimension drawing
There are some differences in the external dimensions of the FX3U and the FX5UJ. Be careful when replacing the modules.
• FX3U
2-φ4.5-diam mounting hole (16M, 32M)
4-φ4.5-diam mounting hole (48M to 128M)
There is no mounting hole * for 16M and 32M.
*
22 W1 (mounting hole pitch)
Model name
FX3U-16M
FX3U-32M
FX3U-48M, FX3U-32MR/UA1
FX3U-64M
FX3U-80M, FX3U-64MR/UA1
FX3U-128M
4 Replacement from FX3U to FX5UJ
54
4.3 Selection of Substitute Models
Difference
FX3U
Extension possible
X0 to X5: 5 s
X6 and X7: 50 s
X10 to X17: 200 s
X0 to X5: 6 mA
X6 and X7: 7 mA
X10 or later: 5 mA
*
W
W: mm
130
150
182
220
285
350
FX5UJ
Extension not possible
■FX5UJ-24M
X0, X1, X3, and X4: 5 s or less
when ON and 5 s or less when
OFF
X2, X5, X6, and X7: 30 s or
less when ON and 50 s or less
when OFF
X10 to X15: 50 s or less when
ON and 150 s or less when
OFF
■FX5UJ-40M and FX5UJ-
60M
X0, X1, X3, and X4: 5 s or less
when ON and 5 s or less when
OFF
X2, X5, X6, and X7: 30 s or
less when ON and 50 s or less
when OFF
X10 to X17: 50 s or less when
ON and 150 s or less when
OFF
X0 to X7: 5.3 mA
X10 or later: 4 mA
86
(When FX3U-7DM installed: 88.5)
W1: mm
103
123
155
193
258
323
Precautions

Noises that were not detected by FX3U may
possibly be captured as an input. Take external
measures against noise, or set an appropriate
input response time parameter.
The input signal current has been lowered, so it
is necessary to check the specification of the
external devices when replacing.
External color: Munsell 0.08GY/7.64/0.81
Top cover: Munsell N1.5
Unit: mm
The terminal block uses M3 terminal
screws
35 mm width DIN rail can be installed
9
Weight: kg
Approx. 0.60
Approx. 0.65
Approx. 0.85
Approx. 1.00
Approx. 1.20
Approx. 1.80