Description
Interfacing 4-channel analog inputs directly to DeviceNet networks, the Beckhoff IP3112-B520 Fieldbus Box delivers high-precision decentralized signal acquisition. This module is engineered to operate without a control cabinet, allowing direct field installation on machinery in demanding industrial settings. It processes differential analog signals ranging from 0 to 10 V with a high 12-bit resolution. Its rugged IP67 construction guarantees dust and moisture exclusion, ensuring high reliability in aggressive manufacturing environments.
Features
- Four independent differential analog input channels (0 to 10 V range).
- Direct integration into DeviceNet architectures via the integrated B520 network interface.
- Automatic fieldbus baud rate detection up to 500 kbaud.
- Decentralized, cabinet-free mounting with IP67 protection rating.
- Convenient configuration via the KS2000 software tool or direct controller communication.
Applications
- Decentralized automation architectures requiring remote signal monitoring.
- Machine-level deployment without additional protective field enclosures.
- Factory floor sensor arrays utilizing standard DeviceNet infrastructure.
Technical Specifications
| Parameter |
Value / Specification |
| Manufacturer |
Beckhoff |
| Model Number |
IP3112-B520 |
| Fieldbus Type |
DeviceNet |
| Analog Inputs |
4 differential inputs (0 to 10 V) |
| Resolution |
12-bit |
| Data Transfer Rates |
Automatic detection up to 500 kbaud |
| Bus Interface |
1 x M12 plug, 5-pin |
| Power Supply Us |
24 V DC (-15% / +20%) |
| Power Connection |
Feed: 1 x M8 male (4-pin); Downstream: 1 x M8 female (4-pin) |
| Current Consumption (Us) |
45 mA + sensor load (max. 0.5 A) |
| Isolation Voltage |
500 V (Control voltage / Fieldbus) |
| Operating Temperature |
0 to +55 degC |
| Storage Temperature |
-25 to +85 degC |
| Protection Rating |
IP65 / IP66 / IP67 (conforms to EN 60529) |
| Vibration/Shock Resistance |
Conforms to EN 60068-2-6 / EN 60068-2-27 |
| Country of Origin |
Germany |
| Shipping Weight (Calculated) |
0.40 kg |
Connections and Interfaces
| Interface Type |
Pin / Terminal |
Function / Assignment |
| DeviceNet M12 (B520) |
Pin 1 |
Shield |
| Pin 2 |
V+ (24 V DC) |
| Pin 3 |
V- (0 V) |
| Pin 4 |
CAN_H |
| Pin 5 |
CAN_L |
| Power Supply M8 |
Pin 1 |
Feed 24 V DC (Control Voltage Us) |
| Pin 2 |
Feed 24 V DC (Auxiliary/Load Voltage Up) |
| Pin 3 |
GNDs |
| Pin 4 |
GNDp |
Empirical Engineering Insights
Alternative Models & Compatibility
The IP3112-B520 module operates specifically on DeviceNet network layers. For networks moving toward Ethernet standards, conversion to Beckhoff EtherCAT-based Box modules (such as the EP-series) is required. Ensure that the controller's EDS (Electronic Data Sheet) files match the hardware revision of the IP3112-B520 to prevent data structure mapping mismatch errors.
Application Pitfalls & Engineering Notes
Since this unit uses 12-bit differential inputs, avoiding ground loops is critical. Ensure that the common-mode voltage limit is strictly adhered to, as exceeding this range will induce sensor signal saturation and skew digital measurements. The integrated sensor supply is rated for a combined maximum of 0.5 A; overloading this rating will trip thermal limits, temporarily shutting down input scanning.
Commissioning & Wiring Tips
Always use high-quality shielded twisted-pair (STP) copper cabling for DeviceNet lines, ideally conforming to standard 2 x 2 x 0.25 mm2 specifications. Do not omit the standard 121-ohm terminating resistors at both absolute ends of the physical DeviceNet trunk. These are essential for mitigating signal reflection issues on high baud rate (500 kbaud) configurations.
Installation Guidelines
CRITICAL WARNING: Ensure all power lines (control and load voltages) are completely de-energized prior to installing, adjusting, or routing bus and power connections. Failure to follow electrical isolation steps may result in hardware failure or personal injury.
1
Mount the Fieldbus Box physically to a flat mounting plane using M3 or M4 hardware. Do not exceed the housing's mechanical load specifications.
2
Connect the 5-pin M12 DeviceNet cable, verifying the alignment of the keyways to prevent physical pin damage.
3
Attach the M8 control voltage input plug. Loop the downstream connection to neighboring modules only if total current limits are strictly calculated.
4
Secure and seal all unused connection terminals with appropriate IP67-rated protective caps.