A1SD70 Positioning Module Discontinuation Notice

This technical bulletin announces the discontinuation of the Mitsubishi MELSEC-AnS series positioning module A1SD70, with final order acceptance on August 30, 2013, and production ending September 30, 2013, due to obsolete parts. It specifies the replacement model QD73A1 (requiring a system upgrade to the MELSEC-Q series) and provides a detailed performance specification comparison, including differences in speed command range, feedback pulse frequency, starting times, LED indicators, and power requirements.