Beckhoff KL6831 Bus Terminal

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Manufacturer: BECKHOFF
Product No.: KL6831
Country of origin:Германия
Product Type: Bus Terminals
Payment: T/T, Western Union
Weight: 1000g
Dimensions: 120 mm x 80 mm x 25 mm
Shipping port: Xiamen
Warranty: 12 months

Description

Directly integrating Standard Motor Interface drives into the modular K-bus terminal system, the Beckhoff KL6831 enables high-precision coordination of up to 16 SMI LoVo actuators. This single-channel terminal serves as a dedicated communication gateway, facilitating bilateral data transfer between the control processor and intelligent roller shutter or solar protection drives. Operating on the low-voltage SMI LoVo physical layer, the Beckhoff KL6831 minimizes system wiring overhead and bridges the field level directly to the controller process image using 24-byte input and output maps. Additionally, the integration of local hardware inputs permits commissioning sequences prior to network software configuration.

Features

Supports connection of up to 16 SMI LoVo (Low Voltage 24 V DC) actuator slaves.
Features two integrated 24 V DC digital inputs on the terminal body for simplified local commissioning and manual testing.
Provides galvanic isolation up to 1500 V DC between the SMI bus and the internal K-bus.
Implements continuous diagnostic monitoring of motor state feedback via the TwinCAT PLC SMI library.
Supports flexible line topologies extending up to a maximum aggregate cable distance of 200 meters.

Applications

Automated solar shading, louver control, and blind adjustment in high-exposure commercial facades.
Industrial cleanroom shading systems utilizing 24 V DC Low Voltage motors.
Integration of automated window and ventilation actuators in building management networks.

Technical Specifications

Parameter	Specification Value
Manufacturer	Beckhoff Automation
Model Number	KL6831
Product Type	SMI Bus Terminal (LoVo)
Number of Channels	1
Supported SMI Slaves	Maximum 16
Data Transfer Rate	2400 baud
SMI Bus Topology	Line topology
Maximum Cable Length	200 m
Process Image Width	24 Byte input / 24 Byte output
Nominal Input Voltage	24 V DC (-15% / +20%)
Current Consumption (K-bus)	Typically 55 mA
Electrical Isolation	500 V (K-bus to SMI-bus)
Insulation Voltage	1500 V DC (SMI to K-bus); 1500 V AC (SMI to Power Contacts)
Protection Rating	IP20
Operating Temperature	0 to +55 degC
Storage Temperature	-25 to +85 degC
Relative Humidity	95% non-condensing
Country of Origin	Germany
Shipping Weight (Calculated)	0.15 kg
Package Dimensions (Calculated)	120 mm x 80 mm x 25 mm

Connections and Interfaces

Terminal Point	Signal Assignment	Description
1	SMI I+	SMI Bus positive connection
2	SMI I-	SMI Bus negative connection
3	Input 1	Digital input 1 (24 V DC) for local actuator commissioning
4	Input 2	Digital input 2 (24 V DC) for local actuator commissioning
5	24 V DC	SMI external supply input (positive contact)
6	0 V	SMI external supply input (ground contact)

Empirical Engineering Insights

Alternative Models & Compatibility

The KL6831 is specifically built for 24 V DC SMI LoVo standard actuators. If your installation utilizes standard line-voltage (230 V AC) SMI actuators, you must deploy the alternative KL6832 module to prevent irreversible hardware damage. Both terminals share the same TwinCAT PLC library blocks, allowing straightforward porting of PLC application code between 24 V and 230 V architectures.

Application Pitfalls & Engineering Notes

While the theoretical SMI bus limit is 200 meters, signal integrity degrades in high-EMI environments when run parallel to medium-voltage power lines. Always route the SMI communication pairs in shielded, twisted-pair cables. To avoid voltage dropouts across LoVo lines, recalculate the supply wire cross-section based on the cumulative peak inrush currents of all 16 connected drives during simultaneous startup cycles.

Commissioning & Wiring Tips

The integrated digital inputs 1 and 2 allow commissioning personnel to drive the SMI actuators up and down directly at the terminal strip before configuring the TwinCAT software or mapping the bus coupler. This minimizes on-site commissioning timelines by isolating physical wiring faults from PLC code issues. Ensure the 24 V DC power contacts are correctly linked via the adjacent terminal power feed-in points.

Installation Guidelines

CRITICAL WARNING: De-energize all primary field power supplies and K-bus coupler modules before inserting or removing the terminal block. Hot-plugging any I/O terminals into the active backplane can cause transient voltage spikes, resulting in logic corruption or permanently damaging the K-bus transceivers.

1 Mount the terminal by sliding it onto a standard 35 mm DIN rail (EN 60715) until the lock release latch clicks firmly.

2 Ensure physical side-by-side locking connections with adjacent terminals to maintain internal K-bus contact integrity.

3 Strip field wires to the specified length and insert them into the spring-clamp terminals using a suitable flathead tool.

4 Apply 24 V DC external supply voltage to power contacts to energize the SMI LoVo bus system.

Key Features:

What is the main functional difference between the KL6831 and KL6832?

The KL6831 is engineered specifically for Low Voltage (24 V DC) SMI LoVo actuator installations, while the KL6832 is built for 230 V AC line-voltage SMI installations.

Can I test the actuator movements without setting up the PLC software configuration?

Yes. The KL6831 features 2 built-in digital inputs which are pre-configured to allow manual up/down movement of connected SMI actuators during pre-commissioning phases.

How many SMI actuators can be addressed by a single KL6831 terminal?

A single KL6831 Bus Terminal supports a maximum connection limit of 16 SMI LoVo actuator slaves on its single physical channel.

What software blocks are needed to integrate this terminal into TwinCAT?

Integration requires the TwinCAT PLC SMI library, which handles data exchanges, commands, and diagnostic updates with the SMI motors through the K-bus process image.

Глобална експресна доставка

Стандартна доставка: 4-6 работни дни чрез DHL, FedEx и UPS.
Експресна изпращане: Изпращане в същия ден за налични поръчки, направени преди 14:00 ч. (GMT+8).
Глобално покритие: Обслужваме над 150 държави, включително бърза доставка до Саудитска Арабия и ОАЕ.

Връщания и гаранция

30-дневна гаранция: Връщания се приемат за налични продукти в оригинална, фабрично запечатана опаковка.
12-месечна гаранция: Всеки индустриален компонент е подкрепен с нашата професионална техническа гаранция.

Поръчките се обработват и доставят от понеделник до петък (с изключение на официалните празници).

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Beckhoff KL6831 Bus Terminal