KM2002-0004 BECKHOFF 16-Channel Digital Output Terminal Module

Product Overview

The KM2002-0004 (KM 2002-0004) is a high-density Bus Terminal module designed to bridge the gap between control logic and field-level actuators. Integrating 16 digital outputs into a compact 26.5 mm housing, this module provides 24 VDC at 0.5 A per channel, split across two 8-channel pluggable connectors. In industrial applications such as conveyor sorting systems, automated assembly stations, and high-node-count control panels, the KM2002-0004 is essential for driving ohmic, inductive, and lamp loads. By utilizing a 3-wire connection technology with integrated status LEDs, it offers superior diagnostic capabilities and simplified wiring for sensors and actuators, significantly reducing installation time and cabinet complexity compared to standard single-channel terminals.

Technical Configuration

The KM2002-0004 architecture is optimized for rapid deployment and high reliability. Unlike standard terminals, the KM series uses a pluggable wiring level, allowing for pre-wired harnesses to be connected or disconnected instantly. The "0004" variant specifically features a 3-wire connection interface, which facilitates the direct connection of actuators by providing signal, 24V, and 0V paths at the terminal level. The module is short-circuit proof with a peak current limit of < 2 A and provides 500 V of electrical isolation between the K-bus and the field potential. Its binary control signals are transferred with minimal delay, and the integrated reverse voltage protection ensures the longevity of the module even in the event of wiring errors during commissioning.

Technical Specifications

Technical FAQs

What are the specific advantages of the -0004 variant over the -0000 base model?

While the KM2002-0000 is the bare module without connectors, the KM2002-0004 includes the 3-wire pluggable connectors and integrated LEDs. The 3-wire system is particularly beneficial for actuators that require a local power supply, as it eliminates the need for external distribution blocks.

Does this module require a power feed terminal?

The KM2002-0004 draws its internal logic power (5 mA) from the K-bus. However, the field power for the 16 outputs must be supplied to the module via the external pluggable connectors. Ensure your 24 VDC field power supply can handle the potential 8 A total load (16 channels x 0.5 A).

Can the KM2002-0004 drive inductive loads like solenoid valves?

Yes, the module is rated for inductive loads with a maximum breaking energy of < 150 mJ per channel. For highly inductive loads or high-frequency switching, it is still recommended to use external flyback diodes to protect the output circuitry and extend the module's lifespan.

Engineering & Installation Guide

Pluggable Connector Maintenance:

The KM2002-0004 utilizes a specific plug-in technology. When installing or removing the connectors, ensure the DIN rail power is disconnected to prevent arcing on the contact pins. Use the integrated locking mechanism on the 35 mm DIN rail to prevent the module from shifting, which could cause intermittent contact on the K-bus.

Wiring and Cross-Section Management:

The terminal supports stranded and solid wire with a cross-section of 0.08 to 1.5 mm². For optimal signal integrity and vibration resistance, a stripping length of 8 mm is required. In high-vibration environments, using ferrules is recommended to prevent wire splaying and potential short circuits between the high-density pins.

Thermal Considerations for High-Density I/O:

When all 16 channels are active at the maximum 0.5 A load, the module generates localized heat. Ensure a minimum vertical clearance of 30 mm is maintained above and below the Bus Terminal segment to allow for natural convection. If the ambient temperature in the cabinet consistently exceeds 45 deg C, consider active cooling or spacing the KM modules with passive end caps to ensure stable operation.