SH1421-5241 by Sanyo Denki

The SH1421-5241 is a stepping motor module manufactured by Sanyo Denki as part of the F SANMOTION Stepping Motors series. It is intended for motion axes that need repeatable incremental rotation under fieldbus control, allowing PLCs to drive light conveyors, small gantries, or indexing fixtures without separate encoder feedback. The motor integrates power stage and network interface, so it serves as a compact actuator in distributed automation layouts where cabinet space and wiring time must be minimized.

The unit's housing measures 60×160×95 mm, giving installers a narrow width for dense panel placement. Its controller can refresh output commands every 0.25 ms, enabling smooth micro-stepping at a feedback resolution of 10,000 P/R. Shaft speed is programmable from standstill up to 0-4500 min?¹, or 0-3000 min?¹ when paired with the 60 mm² frame option, so a single part number covers slow indexing and high-throughput moves. Communication with the host PC occurs through a USB 2.0 service port and through a 100BASE-TX physical layer that moves cyclic data over the IEEE 802.3 Ethernet protocol. At the link layer the device sustains full-duplex transfers at 100 Mbit/s, supporting SM2 event, DC (SYNC0/SYNC1), or asynchronous synchronization modes for coordinated multi-axis motion.

The motor weighs 0.7 kg, a low mass that eases gantry loading while still accommodating a built-in holding-brake driver. Reliable operation is specified up to an ambient humidity of 90% RH without condensation and up to 1000 m above sea level, making the drive suitable for most factory floors. Mechanical robustness is defined by a shock limit of 20 m/s² and a vibration tolerance of 5 m/s² between 10 Hz and 55 Hz over all axes. When rapid deceleration is required, an optional regenerative resistor can return excess energy to the DC bus instead of dissipating it inside the motor.