REXROTH R-ILB S3 AI12 AO4 SSI-IN4

Analog Input (AI 12 Channels)

1. Signal Types: 0–10V, ±10V, 0–20mA, 4–20mA analog process signals
2. Input Impedance: Voltage input 260kΩ, current input 240Ω
3. Conversion Resolution: 16-bit high-precision AD conversion
4. Input Filter Cutoff Frequency: Configurable digital low-pass filter

Analog Output (AO 4 Channels)

1. Output Signal Types: 0–10V, ±10V, 4–20mA
2. DA Conversion Time: 75μs rapid response
3. Max Output Load: Voltage output ≤2kΩ load, current output ≤500Ω load

SSI Absolute Encoder Input (4 Channels)

1. Encoder Supply Voltage: 24VDC, max 200mA total output for encoders
2. Supported Encoder Resolution: Up to 31-bit SSI serial absolute encoders
3. Signal Transmission: Differential RS422 SSI encoder signal input

General Module Parameters

1. Fieldbus Protocol: Sercos III real-time motion control bus
2. Power Supply: 24VDC industrial control power
3. Operating Temperature: -25℃ ~ +60℃
4. Storage/Transport Temperature: -40℃ ~ +85℃
5. Ambient Humidity: 10%–90% RH, non-condensing
6. Protection Class: IP20 indoor cabinet DIN rail installation
7. Weight: 0.27kg

Functional Features

1. Three-in-one integrated I/O: analog acquisition, analog control output, absolute position encoder signal reading, reducing system I/O rack quantity
2. Sercos III real-time bus synchronization, high-precision position closed-loop control for multi-axis servo systems
3. Each analog channel independently configurable signal type (voltage/current) via Rexroth IndraWorks engineering software
4. Over-voltage, over-current, reverse polarity protection for all analog and encoder channels
5. Real-time channel fault diagnosis: open-circuit, short-circuit, encoder communication loss, fault codes uploaded to motion controller
6. LED diagnostic indicators: bus communication status, power, channel fault alarm

Working Principle

1. AI Channels: Sample analog sensor signals (pressure, temperature, force transducers), convert analog values to digital data via 16-bit AD converter, transmit digital process values to motion controller via Sercos III bus.
2. AO Channels: Receive digital control target values from motion controller, convert to analog voltage/current signals via DA circuit to drive proportional valves, variable frequency drives.
3. SSI-IN4 Channels: Receive differential serial position data from absolute SSI encoders installed on servo axes, parse 31-bit absolute position information and transmit position feedback to motion controller for full closed-loop motion control.

Structure & Material

1. Housing: Lightweight flame-retardant gray ABS plastic, compact slim Inline series form factor
2. Internal Circuit: Isolated multi-layer PCB, independent signal conditioning circuit for each AI/AO/SSI channel
3. Connectors: Front-side pluggable screw terminal blocks for sensor/actuator wiring; rear-side Sercos III bus gold-plated edge connector

Installation Requirements

1. Standard 35mm DIN rail snap mounting inside IP54 industrial control cabinet
2. All analog sensor, encoder cables must use shielded twisted-pair cables with single-point cabinet grounding
3. Separate analog signal wiring from high-power servo motor power cables (≥30cm clearance)
4. Maintain 10mm horizontal gap between adjacent Inline I/O modules for heat dissipation

Application Scenarios

• Multi-axis CNC machine tool servo motion control systems
• Automated packaging, filling, sealing production line motion control
• Robotic material handling, gantry positioning equipment closed-loop control
• Hydraulic proportional valve precision analog control for test benches
• Printing machinery high-precision register position control

Operation & Maintenance Notes

1. Configure all channel signal ranges and filter parameters via IndraWorks software before commissioning
2. Quarterly inspect all pluggable terminal block wiring tightness; vibration may loosen contact terminals
3. If SSI encoder communication fault occurs, check encoder 24V power supply and differential twisted-pair cable shielding grounding
4. Do not operate module in environments with oil mist, metal dust or corrosive chemical vapor without sealed cabinet protection