Description
Designed for direct machine-mounting in demanding industrial environments, the Beckhoff IP4112-B400 establishes a ruggedized Interbus fieldbus interface without requiring an additional protective enclosure. By integrating control and processing mechanisms directly on-site, this module facilitates robust IP65/66/67-rated distributed I/O operation. It features standard M23 connection nodes for seamless network handshaking and is fully configurable using the specialized KS2000 configuration software environment.
Features
- High-integrity Interbus network communication capabilities.
- Robust IP65, IP66, and IP67 dust and liquid ingress protection.
- Direct-to-machine installation footprint, eliminating terminal box requirements.
- Dual M8 power interface configurations supporting simplified downstream daisy-chaining.
- Full configuration integration within the Beckhoff KS2000 environment.
- Exceptional vibration and shock resistance complying with European industrial standards.
Applications
- Automotive assembly lines utilizing legacy and modern Interbus networks.
- Material handling, logistics, and multi-zone conveyor systems.
- Processing plants requiring decentralized I/O distribution in high-moisture or dusty zones.
Technical Specifications
| Specification Parameter |
Technical Value |
| Manufacturer |
Beckhoff Automation |
| Model Number |
IP4112-B400 |
| Product Type |
Fieldbus Box |
| Bus Interface |
1 x M23 female 9-pin, 1 x M23 male 9-pin (Interbus) |
| Control Voltage Supply |
24 V DC (20 to 29 V DC) |
| Current Consumption (Box Supply) |
85 mA + sensor load (max. 0.5 A) |
| Power Feed Connection |
1 x M8 male socket, 4-pin |
| Power Downstream Connection |
1 x M8 female socket, 4-pin |
| Protection Rating |
IP65 / IP66 / IP67 (conforms to EN 60529) |
| Operating Temperature |
0 to +55 degC |
| Storage Temperature |
-25 to +85 degC |
| Vibration/Shock Resistance |
Conforms to EN 60068-2-6 / EN 60068-2-27 |
| EMC Immunity/Emission |
Conforms to EN 61000-6-2 / EN 61000-6-4 |
| Country of Origin |
Germany |
| Shipping Weight (Calculated) |
0.55 kg |
| Package Dimensions (Calculated) |
160 mm x 120 mm x 60 mm |
Connections and Interfaces
| M8 Power Connector Pin |
Function Assignment |
| Pin 1 |
Feed Control Voltage, +24 V DC |
| Pin 2 |
Feed Load Voltage (according to I/O configuration) |
| Pin 3 |
GND Control Voltage |
| Pin 4 |
GND Load Voltage |
Empirical Engineering Insights
Alternative Models & Compatibility
The "B400" suffix designates native integration into Interbus topologies via M23 connectors. For migration paths to modern networks such as EtherCAT or PROFINET, alternative Fieldbus Box suffixes (e.g., "-B110" or "-B310") should be sourced. If replacing older generation modules, ensure that the existing Master configuration file (GSD or device description database) matches the legacy revision of this specific firmware sequence.
Application Pitfalls & Engineering Notes
A common point of failure in distributed setups is exceeding the total physical power distribution thresholds. When daisy-chaining modules via the downstream M8 connectors, ensure the total current consumption of sensor networks and auxiliary controls does not exceed the absolute limit of 0.5 A. Excessive current draw will trigger localized power rail dips and communication drops.
Commissioning & Wiring Tips
To maintain full IP67 ingress ratings in harsh operating conditions, unused M8 or M23 ports must be sealed with official protective threaded metal caps. Standard plastic transport plugs do not prevent liquid ingress over time. When utilizing KS2000 for diagnostics, ensure you use the proper isolated serial interface adapter to prevent ground loops between the fieldbus nodes and your PC hardware.
Installation Guidelines
CRITICAL WARNING:
Always isolate the 24 V DC supply lines before starting any assembly or maintenance operations. Connecting or disconnecting active cables under load can lead to diagnostic data corruption, arc flashes, or localized transceiver hardware failure.
1
Mount the Fieldbus Box on a flat, vibration-free surface utilizing standard M4 screws. Torque the mounting hardware to 1.2 Nm.
2
Establish the Interbus incoming and outgoing physical lines using high-shielded M23 9-pin industrial cables.
3
Connect the 24 V DC power distribution via the 4-pin M8 male connector. Securely hand-tighten all knurled collars to seat the internal O-ring seal.