Description
Core Product Summary
The B&R 3DI695.6 (commonly referenced as the DI695) is a 16-channel digital input module engineered for the B&R modular industrial I/O and controller architecture. It functions as a high-voltage interface unit designed to acquire, isolate, and convert 120/230 VAC discrete field signals into stable internal logic data compatible with B&R programmable logic controllers.
The module features 16 individual input channels configured to process alternating current levels typical of heavy industrial machinery, limit switches, and control panels. Built-in optical and galvanic isolation barriers protect internal processing racks from transient electrical noise and voltage spikes. Each input channel includes dedicated status indication LEDs for fast visual verification of field states during operation and maintenance.
Key Technical Specifications
| Parameter | Specification |
| Product Type | Digital Input Module (DI) |
| System Series | B&R Modular I/O System Architecture |
| Model Designation | 3DI695.6 (DI695) |
| Input Channels | 16 digital input channels |
| Nominal Input Voltage | 120 / 230 VAC (50 / 60 Hz) |
| Maximum Peak Voltage | 264 VAC |
| 1-Signal Threshold | Min. 79 VAC / Min. 2 mA |
| 0-Signal Threshold | Max. 40 VAC / Max. 15 mA |
| Response / Filter Time | Max. 50 ms (0 to 1 and 1 to 0) |
| Channel Isolation | Galvanic and optical isolation (2500 VAC channel-to-bus) |
| Internal Power Consumption | Max. 1.5 W (from 5 V backplane) |
| Diagnostic Indicators | 1 green LED per input channel |
Detailed Product Overview
The B&R DI695 module bridges high-voltage alternating current field devices with low-voltage controller logic. In industrial automation setups utilizing 120 VAC or 230 VAC control power grids, standard 24 VDC inputs cannot be used directly. The DI695 safely scales, filters, and isolates these higher voltages directly at the rack level.
Input signals pass through an RC combination and optical coupling network, protecting the backplane logic from line surges. A built-in filter response time of up to 50 milliseconds prevents rapid line noise or contact bounce from triggering false state transitions. The module design allows individual channel monitoring via front-facing LEDs, helping maintenance personnel quickly troubleshoot field wiring loops or failed limit switches without multi-meter diagnostics.
System Compatibility & Integration Requirements
| Item / Dependency | Verified Compatibility or Requirement | Practical Note |
| Control Architecture | B&R Modular I/O / System platform | Designed to plug into standard B&R backplane base racks. |
| Field Input Voltage | 120 VAC or 230 VAC nominal networks | Matches standard heavy industrial AC control architectures. |
| Wiring Configuration | Multi-channel terminal connection block | Input common terminals must share the same AC phase source. |
3DI695.6
3DI695.6
Dimensions, Mounting & Connection Notes
- Form Factor: Standard single-width modular plug-in unit designed for B&R industrial I/O racks.
- Module Replacement: Supports hot-bus placement behavior where extracting or inserting the module under power causes no mechanical damage to the passive backplane bus.
- Terminal Layout: Front-accessible terminal points route field signals directly to internal optocoupler circuits.
FAQ
What is the primary function of the B&R DI695?
The B&R DI695 (3DI695.6) is a 16-channel digital input module built to process 120/230 VAC discrete signals from industrial field sensors and route them into a B&R controller.
What input voltage range does this module accept?
The module is rated for nominal 120 VAC and 230 VAC systems, handling peak voltages up to 264 VAC.
What is the filter response time of the inputs?
The signal filter and transition delay time for switching from 0-to-1 or 1-to-0 is a maximum of 50 ms.
Are the input channels isolated from the backplane?
Yes, the module features galvanic and optical channel isolation rated up to 2500 VAC between the field channels and the internal logic bus.
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