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- FAQ > Controllers > Programmable Controllers MELSEC > MELSEC-F Series > Main Unit
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FAQ within [ Main Unit ]
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Protection components of relay contacts
We recommend you to connecta diode for commutation to the DC load, and surge absorber (C-R) to the AC load for the protection of the relay contacts. More Details >>
- No:24999
- Release Date:2019/04/23 10:39
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Connecting a DC power supply type extension unit to an AC power supply type main unit
No, they cannot be connected. Connect the units having the same power supply type. More Details >>
- No:25008
- Release Date:2019/04/23 11:12
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Input numbers of the FX programmable controllers
Since they are octal, the number after X7 is X10 and after X77 is X100. More Details >>
- No:25000
- Release Date:2019/04/23 10:39
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Types of Batteries used in MELSEC-F
F2-40BL: Lithium thionyl chloride primary battery FX2NC-32BL: Lithium thionyl chloride primary battery FX3U-32BL: Manganese dioxide lithium primary battery F... More Details >>
- No:22265
- Release Date:2018/08/30 13:48
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Differences in the specifications between the programmable controllers used in Japan and overseas.
The input signal forms are different. All the programmable controllers for the domestic market other than the FX3G/FX3U series are the sink input. The progra... More Details >>
- No:24913
- Release Date:2019/04/17 11:39
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Connection of expansion boards and a memory cassette to the FX3G series main unit
They can be used together. * 14/24-point type FX3G series main unit ・ An expansion board can be connected to BD1 (1st position) and a memory cassette can b... More Details >>
- No:24952
- Release Date:2019/04/18 14:27
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Instruction execution complete flag
When a flag contact is not programmed directly under the instruction to be checked, the flag may be turned off depending on the execution status of another i... More Details >>
- No:24988
- Release Date:2019/04/23 07:22
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AC input type main unit in the FX3 series
FX3U-32MR/UA1 and FX3U-64MR/UA1 are AC input types. More Details >>
- No:24991
- Release Date:2019/04/23 10:37
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Models of the MELSEC-F series main units
"E" represents AC power supply and "D" represents DC power supply. The alphabets following "E" and "D" represent output types. "S" represents replay output... More Details >>
- No:24776
- Release Date:2019/02/27 15:35
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Use of latched (battery backed) type auxiliary relay
If the OUT instruction using a latched (battery backed) type auxiliary relay number exists in a sequence program, the information held may be overwritten by ... More Details >>
- No:24877
- Release Date:2019/04/15 08:07
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