Absolute rotary encoder EBS40A-S1

magnetic14-bit12-bit

Product overview
The EBS40A-S1 is a magnetic absolute single-turn encoder designed for industrial angle measurement where high protection and long life are required.

Key features

• Magnetic single-turn absolute encoder
• High protection degree (IP67)
• One pair of precision ball bearings
• Digital outputs: RS485 (Modbus RTU) or CAN (CANopen)
• Resolution: standard 12-bit (4096); up to 14-bit (16384)

Dimensions
Dimension drawings available for installation reference (see product images).

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

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

General Electrical Specifications (RS485)
Standard model: EBS40A-S1-W12485
Applied voltage: 9 V–30 V
Current consumption (no-load): ≤ 70 mA
Single-turn resolution: 4096 (12 bit); Max 16384 (14 bit)
Protocol: Modbus RTU (slave)
Baud rate: 1200–115200 bps (default 9600 bps)
Address: 1–200 (configurable, default 1)
Insulation resistance: >1000 MΩ (500 V DC)
Dielectric strength: 1 min (500 V AC)

General Electrical Specifications (CAN)
Standard model: EBS40A-S1-W12CAN
Applied voltage: 10 V–30 V
Current consumption: < 80 mA
Single-turn resolution: 4096 (12 bit); Max 16384 (14 bit)
Independent linearity tolerance: ±0.3%
Repeatability: ±1 LSB (depending on installation accuracy)
Protocol: CANopen
Insulation resistance: >1000 MΩ (500 V DC)
Dielectric strength: 1 min (500 V AC)

Special specifications available
Special shaft: custom shaft length/diameter or special machining (slotted, flattened, drilled, etc.)
Customized protocol: protocol customization available on request

Technical specifications

• Model: EBS40A-S1
• Outputs: RS485 (Modbus RTU) or CAN (CANopen)
• Resolution (single-turn): 12–14 bit (4096–16384)
• Operating voltage: RS485 9–30 V; CAN 10–30 V
• Current consumption: RS485 ≤70 mA; CAN <80 mA
• Protection: IP67
• Housing: anodized aluminium alloy; shaft: stainless steel
• Operating temperature: -40℃ to +85℃
• Life expectancy: >100,000,000 revolutions