Absolute rotary encoder EBM30A

magnetic12-bit14-bit

Product overview
EBM30A is an absolute multi‑turn magnetic encoder designed for industrial angle/position feedback. Available with RS485 (Modbus RTU slave) or CAN (CANopen) interfaces. Multi‑turn capability standard 30 turns; optional 60 turns or higher depending on interface and configuration.

Key features

• Magnetic absolute multi‑turn encoder
• Multi‑turn: 30 turns standard, 60 turns optional (CAN supports extended multi‑turn/14bit options)
• Single‑turn resolution: 4096 (12bit) standard; up to 16384 (14bit) on selectable versions
• Outputs: RS485 (Modbus RTU), CAN (CANopen)
• Zero point setting at any shaft position

Mechanical specifications
Mechanical angle: 360° (continuous)
Protection: IP40 standard; IP67 option
Operating torque: Standard <5 mN·m; optional 5–10 mN·m
Life expectancy: >50,000,000 cycles
Mass: approx. 65 g
Housing: zinc alloy
Shaft: 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, EN61000‑4‑3)

General electrical specifications (RS485)
Standard model: EBM30A‑E3‑W1230T485
Input voltage: 3.3–5 V DC standard; 12–30 V DC optional
Current (no load): <80 mA
Single‑turn resolution: 4096 (12bit)
Multi‑turn: 30 turns standard; 60 turns optional
Linearity tolerance: ±0.3% (independent)
Repeatability: ±1 LSB (installation dependent)
Protocol: Modbus RTU slave
Multi‑turn data bits: 8 bit
Single‑turn angle bits: 12 bit
Baud rate: default 9600, N,8,1 (configurable)
Address: default 1 (settable)
Update rate: 1 ms
Insulation resistance: >1000 MΩ (500 V DC)
Dielectric strength: 1 min (500 V AC)

General electrical specifications (CAN)
Standard model: EBM30A‑E3‑W1230TCAN
Input voltage: 3.3–5 V DC standard; 12–30 V DC optional
Current (no load): <80 mA
Single‑turn resolution: 4096 (12bit) standard; option up to 16384 (14bit)
Multi‑turn: 30 turns standard; 60 turns optional; CAN supports higher multi‑turn/bit depth options
Linearity tolerance: ±0.3%
Repeatability: ±1 LSB (installation dependent)
Protocol/communication: CANopen
Communication timing: as specified per model (min. intervals indicated in technical data)
Insulation resistance: >1000 MΩ (500 V DC)
Dielectric strength: 1 min (500 V AC)

Special specifications available

• Special connectors or customer‑specified connector assemblies
• Custom shaft lengths, diameters or special machining (slotted, flattened, drilled)
• Alternative outputs on related models: analog 0–5 V, 0–10 V, 4–20 mA or absolute SSI (see related R30M / EAM30A products)

Technical data summary

• Model: EBM30A
• Type: Absolute multi‑turn magnetic encoder
• Interfaces: RS485 (Modbus RTU slave), CAN (CANopen)
• Single‑turn resolution: 4096 (12bit) standard; up to 16384 (14bit) optional
• Multi‑turn: 30 turns standard; 60 turns optional (extended options on CAN)
• Protection: IP40 / IP67
• Operating temp.: -30°C to +85°C
• Supply: 3.3–5 V DC standard; 12–30 V DC optional
• Current: <80 mA (no load)
• Weight: ~65 g
• Housing: zinc alloy; shaft: stainless steel