Schneider's Lexium MDrive® Pulse/Direction products integrate a high-torque 1.8° 2-phase stepper motor with on-board drive electronics, and closed loop performance with internal encoder option. There are three frame size available: NEMA17 (42mm), NEMA23 (57mm) and NEMA34 (85mm).
Products operate in 4 modes: pulse/direction input, variable speed control, constant velocity drive, and variable torque control in closed loop products only. Operating in pulse/direction mode requires a separate motion control master.For operation in harsh environments, IP65-rated Lexium MDrive products with industrial M12 circular connectors are sealed against water and dust ingress, excluding motor shaft. Price decreases, announced Q4 2015, make additional environmental protection more affordable for all applications.
Lexium MDrive Pulse/Direction products (LMD_P) have an RS-422/485 serial interface. Product commissioning, parameterisation and monitoring are accomplished via a user-friendly software GUI, included free as part of the Lexium MDrive Software Suite. Settings can be downloaded and stored in the product's nonvolatile memory.
Lexium MDrive Pulse/Direction closed loop products (LMDCP) are equipped with 1000 line (4000 count/rev) encoders internal to the unit, requiring no extra space in an application. Using the encoder to monitor motor shaft position, real time closed loop feedback is accomplished with hMTechnology.
Lexium MDrive Technical Overview
|Motor frame size||NEMA17||NEMA23||NEMA34|
|Input voltage||+12 to +48 VDC||+12 to +60 VDC||+12 to +70 VDC|
|Holding torque||31 ... 62 Ncm||73 ... 171 Ncm||237 ... 650 Ncm|
|Detent torque||1.2 ... 2.5 Ncm||2.7 ... 6.86 Ncm||7.7 ...14 Ncm|
|Communication protocols||RS422/485 Serial Interface|
|Motor Stack lengths||1, 2, 3|
|Steps per revolution||200, 400, 800, 1000, 1600, 2000, 3200, 5000, 6400, 10000, 12800, 20000, 25000, 25600, 40000, 50000, 51200, 36000 (0.01 deg/μstep), 21600 (1 arc minute/μstep), 25400 (0.001mm/μstep)|
|Operating modes||pulse/direction, speed control, velocity mode|
|Connectors||Pre-wired DB9 mating cable or with USB to RS-422/485 communication converer (MD-CC404-000) as an option|
|Mating connector kit||CK-14|