Electric Actuators – Actuators with Battery-less Absolute Encoders

SMC has introduced a line of actuators driven by 24VDC step motors fitted with battery-less absolute encoders.  An absolute encoder offers position data upon power-on, avoiding the homing routine an incremental encoder requires.  Our battery-less absolute encoder pairs orientation sensors with differently sized rotating wheels to enable position detection.  This electro-mechanical design eliminates the battery and its accompanying import and disposal restrictions common to traditional absolute encoders.  A battery-less solution is also free of memory retention limits from extended power-off situations.

LEFS Slider Type, Ball Screw Drive, Battery-less Absolute Encoder

LEYG Guided Rod, Battery-less Absolute Encoder

LESYH-X171, Electric Slide Table, High Precision Type

LEFS Slider Type, Ball Screw Drive, Battery-less Absolute Encoder

The rodless LEFS slider is an electric actuator with a load mounting platform situated above a ball screw drive.  A flexible seal band permits platform travel while preventing foreign matter from entering the drive.  Slider advantages include a low profile height, shorter length than a rod with equivalent stroke, and better positioning repeatability than a belt driven slider.  This versioin includes a 24VDC motor with a battery-less absolute encoder.  This encoder allows the actuator to be powered down without losing its positional awareness.  The machine’s PLC can access the controller’s operational and positional step data through several fieldbus protocols, IO-Link, or parallel I/O.

• Body sizes: 25, 32, 40
• Maximum work load: 65 kg
• Maximum speed: 1200 mm/s
• Stroke range: 50 to 1200mm in 50mm increments
• Positioning repeatability: ±0.02mm, or ±0.015mm (high precision)

Configuration Options

	Part Number is Partial
LEFS          E    –

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Product Options

Select Product Options

Select values from the drop down lists or make appropriate selections to configure the part number.
Accuracy	— Pick an Option — None  H (High-precision Type)
Size	— Pick an Option — 25  32  40
Motor Mounting Position	— Pick an Option — In-line  R (Right Side Parallel)  L (Left Side Parallel)
Lead	— Pick an Option — A (Size 25: 12mm, Size 32: 16mm, Size 40: 20mm)  B (Size 25: 6mm, Size 32: 8mm, Size 40: 10mm)  H (Size 25: 20mm, Size 32: 24mm, Size 40: 30mm)
Stroke	— Pick an Option — 50mm  100mm  150mm  200mm  250mm  300mm  350mm  400mm  450mm  500mm  550mm  600mm  650mm  700mm  750mm  800mm  850mm  900mm  950mm  1000mm  1100mm  1200mm
Motor Option	— Pick an Option — w/o Option  B (w/Lock)
Auto Switch Compatibility	— Pick an Option — None  C (with Includes 1 Mounting Bracket)
Grease Application	— Pick an Option — with  N (w/o, Roller Specification)
Positioning Pin Hole	— Pick an Option — Housing B Bottom  K (Body Bottom 2 Locations)
Actuator Cable Type, Length	— Pick an Option — None  R1 (1.5m)  R3 (3m)  R5 (5m)  R8 (8m)  RA (10m)  RB (15m)  RC (20m)
Controller	— Pick an Option — None  CE1 (EtherCAT®)  C91 (EtherNet/IP™ Direct Input Type)  CP1 (PROFINET)  CD1 (DeviceNet™)  CL1 (IO-Link)  CM1 (CC-Link Ver. 1. 10)  C51 [Parallel Input (NPN)]  C61 [Parallel Input (PNP)]
Mounting	— Pick an Option — None  7 (Screw Mounting)  8 (DIN Rail)
I/O Cable	— Pick an Option — w/o Cable  1 (I/O Cable, 1.5m)  3 (I/O Cable, 3m)  5 (I/O Cable, 5m)
Communication Plug Connector	— Pick an Option — None  S (Straight Type Communication Plug Connector)  T (T-branch Type Communication Plug Connector)
	Options in: Gray are not compatible with other selected option value. Red conflict with another selected option value. Amber are not recommended.

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