BECKHOFF KS4408 Bus Terminal 8-Channel Analog Output Module

Description

Designed for high-density space-saving control cabinet layouts, the BECKHOFF KS4408 analog output terminal generates analog signals in the range of 0 to 10 V for industrial process control. This module operates on the single-ended measurement principle and houses eight outputs in an exceptionally compact 12 mm housing, significantly reducing DIN rail space requirements. The KS4408 is engineered with a pluggable wiring connection level, allowing the terminal block to be removed from the housing assembly for swift maintenance and simplified field installation without disconnecting individual signal wires.

Operating with a 12-bit resolution, the conversion stage features an processing time of approximately 8 milliseconds across all channels. Electrical isolation of 500 V between the internal K-bus and the external signal level prevents ground loops and protects backplane communication networks from field-side voltage transients. The terminal communicates directly with the Beckhoff K-bus system, enabling seamless integration into TwinCAT control architectures and diverse modular I/O configurations.

Features

• Provides 8 single-ended analog output channels within a compact 12 mm width.
• Features pluggable wiring terminals for quick assembly, removal, and field service.
• Generates standard 0 to 10 V DC control signals with short-circuit proof output stages.
• Delivers 12-bit D/A conversion resolution with a typ. 8 ms conversion interval.
• Provides 500 V electrical isolation between the internal K-bus logic and field-side signals.
• Configures dynamically through the system bus without manual address switches or complex DIP setups.

Applications

• Industrial automation and process machinery controls.
• Heating, ventilation, and air conditioning (HVAC) systems.
• Pneumatic and hydraulic valve actuation control.
• Speed reference control for low-power motor drives and inverters.
• Distributed peripheral control in heavy industrial processing plants.

Technical Specifications

Connections and Interfaces

Installation Guidelines

• Mounting: Snap the terminal securely onto a standard 35 mm DIN rail (EN 60715). Ensure the double-slot key connections lock properly with adjacent terminal modules.
• Wiring: Insert a standard flathead screwdriver into the spring release slot to actuate the clamp, insert the stripped conductor (9 to 10 mm length), and release the clamp.
• Pluggable Block Removal: To detach the wiring block for service, utilize the integral pull-release tabs without removing the bus system base housing.
• EMC Compliance: Route signal cables separately from high-voltage AC power lines to minimize potential electromagnetic noise coupling.

Compliance and Certifications

• CE Compliance
• UL Listed (US and Canada)
• ATEX Certified: II 3 G Ex nA IIC T4 Gc
• DNV GL Marine Approval