Programmable Controllers MELSEC-A Series Renewal
Use high current input compatible module for existing proximity sensors
Modules for Easy Replacement
Supported series: 
Plentiful Q Series modules facilitate the replacement
DC input module
DC input modules compatible with 6 mA rated input current are available.
When replacing the A/QnA Series modules and utilizing the external devices as they are, the existing Q Series modules may not receive signals sent from external devices, such as proximity sensors, due to incompatibility with low-rated input current, and thus, external resistors need to be installed.
With the QX41-S2 and QX81-S2 modules, which are compatible with 6 mA rated input current, external resistors are no longer required. (The existing external devices can be utilized after replacing modules.)
Comparison of QX41-S2/QX81-S2 with large type A/QnA Series modules
| Item | Specification | ||||
|---|---|---|---|---|---|
| A/QnA Series model | Q Series replacement model | ||||
| Model | Positive common type | AX41 | AX42 | QX41-S2*1 | QX41 |
| Negative common type | AX81 | AX82 | QX81-S2*1 | QX81 | |
| Number of input points | 32 | 64 | 32 | 32 | |
| Rated input current | 24 V DC | Approx. 10mA | Approx. 7mA | Approx. 6mA | Approx. 4mA |
| 12 V DC | Approx. 4mA | Approx. 3mA | (N/A) | (N/A) | |
*1.The pin arrangement is same as that of the existing A/QnA Series connector type module.
Use Conversion Adapter manufactured by Mitsubishi Electric Engineering Co., Ltd. when replacing the A/QnA Series 32-point terminal block module.