Absolute rotary encoder EAS40A-S1

magnetic12-bitsingle-turn

Product
Absolute single-turn magnetic encoder EAS40A-S1 for precise position feedback in industrial motion control applications.

Key characteristics

• Magnetic sensing technology with SSI differential output (TTL, binary)
• Single-turn resolution: 4096 (12 bit)
• High protection rating IP67; starting torque <1 mN·m
• Screw & servo mount compatible; includes one pair of precision ball bearings
• Housing: anodized aluminium alloy; Shaft: stainless steel; Mass: approx. 120 g

General mechanical specifications
Protection degree: IP67
Starting torque: <1 mN·m
Life expectancy: >100,000,000 revolutions
Mass: Approx. 120 g
Housing material: Anodized aluminium alloy
Shaft material: Stainless steel

Environmental specifications
Operating temperature range: -40℃～+85℃
Storage temperature range: -40℃～+85℃
Vibration: 100 m/s², 55Hz~2000Hz (EN 60068-2-6)
Shock: 1000 m/s², 6 ms (EN 60068-2-27)
ESD durability: Contact discharge ±8KV, Air discharge ±15KV (EN61000-4-2:2009)
EMS durability: 10 V/m (80MHz～1GHz, 1 kHz 80% AM) (EN61000-4-3:2006+A1:2010)

General electrical specifications
Standard model: EAS40A-S1-W12A
Supply voltage: 9V–30V
Current consumption (no-load): ≤80 mA
Single-turn resolution: 4096 (12 Bit)
Interface: SSI differential signal
Code rule: Binary
Signal level: TTL
Update time: 10 μs
Insulation resistance: >1000 MΩ (500 V DC)
Dielectric strength: 1 min (500 V AC)

Special specifications available
Custom shaft options: special shaft length, special diameter or shaft machining (e.g. slotted, flattened, drilled).

Technical summary

• Model: EAS40A-S1 (standard: EAS40A-S1-W12A)
• Type: Absolute single-turn magnetic encoder
• Output: SSI differential (TTL, binary)
• Resolution: 4096 (12 bit)
• Protection: IP67
• Supply: 9V–30V; Current ≤80 mA (no-load)
• Operating temperature: -40℃ to +85℃
• Mass: ≈120 g