Overview
The Turck BL67-4DI4DO-PD is a modular I/O interface designed for fieldbus-independent automation systems. This compact module delivers 4 digital input channels and 4 digital output channels in a single, plug-mount unit. With galvanic isolation via optocouplers and IP67 protection, it bridges controller I/O and distributed field devices across manufacturing, automotive, and process automation applications.
Key Features
- 4 Digital Inputs — 24 VDC with channel-level diagnostics and invertible logic
- 4 PNP Digital Outputs — 24 VDC rated 0.5 A per channel
- Galvanic Isolation — Optocoupler-separated electronics protect against field-level noise and transients
- IP67 Enclosure Rating — Sealed against dust and immersion for harsh industrial environments
- Adjustable Input Filtering — Configurable debounce times reduce false signals
- LED Status Indicators — Visual diagnostics for input/output and module health
Technical Specifications
This module operates independently of fieldbus type, making it suitable for integration with EtherCAT, PROFINET, PROFIBUS, CANopen, and other networked controllers. Its compact form factor and modular design allow simple plug-in installation in BL67 series mounting frames.
Typical Applications
- Motor start/stop and solenoid valve control in production lines
- Limit switch and sensor signal acquisition in material handling systems
- Discrete device control in automotive assembly and welding cells
- Machine safety interlocks and emergency stop circuits
- Distributed I/O expansion for remote PLC or controller nodes
Compatibility & Replacements
Compatible With
- Turck BL67 series mounting frames and gateways
- EtherCAT masters and gateways supporting BL67 architecture
- PROFINET controllers with BL67 coupler modules
- PROFIBUS masters via appropriate BL67 gateway
- Industrial PCs and distributed control systems using Turck I/O modules
Replaces / Drop-In Replacement For
Verify exact interchangeability with your system integrator; this module is a direct replacement for earlier BL67-4DI4DO variants with equivalent I/O specifications. Consult the Turck user manual or distributor technical support for part-number cross-reference.
Works With
- EtherCAT networks and masters
- PROFINET controllers and switches
- PROFIBUS DP masters
- CANopen systems
- Turck control software and configuration tools
