Check if 24 VDC power is supplied to "1A7" (pin No.) of the external input signal connector.

Alarm 2149 (Main circuit OFF warning) occurs when the servo system turns ON with no power supplied to the servo main cir

Major error 1201 occurs when the absolute position is erased.Execute the home position return after checking the batteri

Minor error 120 occurs in the following case:The zero pass signal (M2406+20n) is OFF when the re-movement to the home po

Error 2035 (Command frequency error) occurs when the servo amplifier detects a command frequency error. (1) When the com

Error 3012 occurs when the multiple CPU setting of PLC CPU (CPU No.1) does not match that of Motion CPU. (1) Check if th

Check the following signals. • Start accept flag (M2001 to M2032) • Positioning start complete signal (M4000+20n (n: A

The following shows the devices for the battery errors. • [SM51] Battery low latch Turn ON when the voltage of battery

The PCPU READY complete flag (SM500) turns ON when no error is detected in the fixed parameters, servo parameters, and l

No, the time cannot be changed during operation. (Note): The following is the modules that support the acceleration/dec

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MELSEC-Q Series

Positioning Modules(74)

QD75M(29)
QD75MH(33)
QD75H(1)
QD74MH(11)

FAQ within [ MELSEC-Q Series ]

41-50 of Total 59

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Input/output signal

Check if 24 VDC power is supplied to "1A7" (pin No.) of the external input signal connector. More Details >>
- No：23594
- Release Date：2018/09/14 15:09
- Category： RD77MS , QD77MS , QD75MH , QD75M
Alarm 2149

Alarm 2149 (Main circuit OFF warning) occurs when the servo system turns ON with no power supplied to the servo main circuit. Review the condition of servo O... More Details >>
- No：23566
- Release Date：2018/09/14 15:09
- Category： Q17nDSCPU , Q17nDCPU , Q170MSCPU , Q170MCPU , Q17nHCPU , Q17nCPUN
Major error 1201

Major error 1201 occurs when the absolute position is erased.Execute the home position return after checking the batteries of the Motion CPU module and the s... More Details >>
- No：23561
- Release Date：2018/09/14 15:09
- Category： Q17nDSCPU , Q17nDCPU , Q170MSCPU , Q170MCPU , Q17nHCPU , Q17nCPUN
Minor error120

Minor error 120 occurs in the following case:The zero pass signal (M2406+20n) is OFF when the re-movement to the home position is performed by proximity dog,... More Details >>
- No：23559
- Release Date：2018/09/14 15:09
- Category： Q17nDSCPU , Q17nDCPU , Q170MSCPU , Q170MCPU , Q17nHCPU , Q17nCPUN
Error 2035

Error 2035 (Command frequency error) occurs when the servo amplifier detects a command frequency error. (1) When the command is the permissible speed or high... More Details >>
- No：23577
- Release Date：2018/09/14 15:09
- Category： Q17nDSCPU , Q17nDCPU , Q170MSCPU , Q170MCPU , Q17nHCPU , Q17nCPUN
Error 3012

Error 3012 occurs when the multiple CPU setting of PLC CPU (CPU No.1) does not match that of Motion CPU. (1) Check if the multiple CPU setting of the Multipl... More Details >>
- No：23563
- Release Date：2018/09/14 15:09
- Category： Q17nDSCPU , Q17nDCPU , Q170MSCPU , Q170MCPU , Q17nHCPU , Q17nCPUN
Virtual servomotor

Check the following signals. • Start accept flag (M2001 to M2032) • Positioning start complete signal (M4000+20n (n: Axis No.-1)) More Details >>
- No：23552
- Release Date：2018/09/14 15:09
- Update：2023/02/08 10:39
- Category： Q17nDSCPU , Q17nDCPU , Q170MSCPU , Q170MCPU , Q17nHCPU , Q17nCPUN
Battery error

The following shows the devices for the battery errors. • [SM51] Battery low latch Turn ON when the voltage of battery reduces to less than 2.5[V]. Remains O... More Details >>
- No：23558
- Release Date：2018/09/14 15:09
- Category： Q17nDSCPU , Q17nDCPU , Q170MSCPU , Q170MCPU
PCPU READY complete flag (SM500)

The PCPU READY complete flag (SM500) turns ON when no error is detected in the fixed parameters, servo parameters, and limit switch output data, which are ch... More Details >>
- No：23564
- Release Date：2018/09/14 15:09
- Category： Q17nDSCPU , Q17nDCPU , Q170MSCPU , Q170MCPU
Acceleration/deceleration time change

No, the time cannot be changed during operation. (Note): The following is the modules that support the acceleration/deceleration change function. • Q17nDSCP... More Details >>
- No：23570
- Release Date：2018/09/14 15:09
- Category： Q17nDCPU , Q170MCPU , Q17nHCPU , Q17nCPUN

41-50 of Total 59

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