Absolute rotary encoder EAM30A

magnetic12-bit14-bit

Product overview
The EAM30A is a magnetic absolute multi-turn encoder providing reliable multi-turn position feedback with SSI differential output for industrial applications.

Key features

• Magnetic absolute multi-turn encoder
• Multi-turn options: 30 turns standard, 60 turns optional
• Single-turn resolution: standard 4096 (12-bit), up to 14-bit selectable
• Output/interface: SSI differential signal, TTL levels
• Zero-point can be set at any shaft position

Dimensions
Dimension drawing available on product page (example file name: 尺寸图_SENTOP_EAM30A.jpg).

Mechanical specifications

• Mechanical angle: 360° (endless)
• Protection degree: IP40 (standard) / IP67 (option)
• Operating torque: <5 mN·m
• Life expectancy: >50,000,000 revolutions
• Mass: approx. 65 g
• Housing material: zinc alloy; shaft material: stainless steel
• Connection: 8-pin connector (2 mm, 2x4P)

Environmental specifications

• Operating temperature: -30°C to +85°C
• Storage temperature: -30°C to +85°C
• ESD: contact ±8 kV, air ±15 kV (EN61000-4-2)
• EMS: 10 V/m (80 MHz–1 GHz, 1 kHz 80% AM) (EN61000-4-3)

Electrical specifications

• Standard model example: EAM30A-E3-W1230TA
• Input voltage: standard 3.3V–5V DC; optional 12V–30V DC
• Current consumption (no-load): <80 mA
• Single-turn resolution: 4096 (12-bit)
• Multi-turn: 30 turns standard; 60 turns optional
• Independent linearity tolerance: ±0.3%
• Repeatability: ±1 LSB (installation dependent)
• Interface: SSI differential; code: binary; multi-turn data bits: 8 bit; single-turn angle bits: 12 bit
• Signal levels: TTL; update time: 1 ms
• Insulation resistance: >1000 MΩ (500 V DC); dielectric strength: 1 min (500 V AC)

Special options

• Customer-specified connectors and shielded cable options
• Custom shaft lengths, diameters or machining (slots, flats, drilling)
• Alternative outputs (analog 0–5V, 0–10V, 4–20 mA or bus RS485/CAN) available via equivalent product lines

Technical specifications (summary)

• Model: EAM30A (standard example: EAM30A-E3-W1230TA)
• Type: Magnetic absolute multi-turn encoder
• Multi-turn: 30 / 60 turns
• Single-turn resolution: 4096 (12-bit)
• Interface: SSI differential, TTL
• Operating voltage: 3.3–5V DC (standard), 12–30V DC (optional)
• Protection: IP40 / IP67
• Operating temperature: -30°C to +85°C