Model Definition

DI16: 16 Digital Inputs

R‑IB IL: Inline series, standard I/O

S20: S20 I/O station

24: 24 V DC rated voltage

/1: 1‑wire connection; ‑HS: High‑speed (up to 100 kHz)

Technical Specifications

Electrical

Channels: 16 isolated inputs

Rated voltage: 24 V DC (‑3 V to +30 V)

Logic “0”: ‑3 V to 5 V; Logic “1”: 9.4 V to 30 V

Input current: ~2.3 mA per channel

Input filter: Standard 0.5 ms; HS version <1 µs

Isolation: 500 V AC between field and logic

Mechanical & Environmental

Mounting: DIN rail

Dimensions (W×H×D): 35 mm × 54 mm × 126 mm (S20)

Weight: ~0.25 kg

Operating temperature: ‑25 °C to +55 °C

Protection class: IP20

Connection: Push‑in terminals, 0.2–1.5 mm²

Interface and Communication

Bus: PROFIBUS, SERCOS, Ethernet/IP (by model)

Status: LED per channel (ON/OFF) and power LED

Internal bus: Backplane connection to S20 station or Inline controller

Core Functions

Collect 16‑channel digital signals (NPN/PNP compatible)

High‑speed version supports counting and pulse capture up to 100 kHz

Per‑channel isolation reduces noise and improves safety

Compact design saves cabinet space

Plug‑and‑play with Rexroth I/O systems

Application Scenarios

CNC machine tools (limit switches, door interlocks, pushbuttons)

Packaging machinery (photoelectric sensors, proximity switches)

Material handling (conveyor sensors, safety gates)

Automotive assembly lines (fixture sensors, presence detectors)

Retrofit of Indramat DDS/DDC drives with external I/O

Usage and Maintenance

Install and wire only when system is powered off

Use shielded cables for long runs to reduce EMI

Keep ambient temperature ≤55 °C for reliability

Check push‑in terminals annually for tightness

Use channel LEDs for quick fault diagnosis