BECKHOFF KM2604 Bus Terminal Module

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Manufacturer: BECKHOFF
Product No.: KM2604
Country of origin:Alemanha
Product Type: Bus Terminal module
Payment: T/T, Western Union
Weight: 2000g
Dimensions: 99 mm x 100 mm x 62 mm
Shipping port: Xiamen
Warranty: 12 months

The KM2604 is a 4-channel relay output Bus Terminal module designed for switching high-voltage loads in industrial applications. Manufactured by BECKHOFF, this module features four change-over contacts capable of handling up to 16 A, making it suitable for controlling ohmic, inductive, and lamp loads. The KM2604 ensures reliable signal isolation with a rated surge voltage of 2.5 kV and is integrated directly into the I/O system, requiring no additional address or configuration settings.

Features

4-channel relay output with change-over contacts
Nominal switching voltage of 250 V AC or 30 V DC
High load capacity: 16 A nominal switching current
Integrated surge protection (overvoltage category III)
Suitable for high starting current applications (lamp loads/electronic ballasts up to 25 A)
Long operational lifespan (5 x 10^6 mechanical cycles)
Compact DIN rail mountable design

Applications

High-power actuator control
Industrial lighting and electronic ballast switching
Relay control logic for automation systems
HVAC and building automation load switching

Technical Specifications

Category	Specification
Manufacturer	BECKHOFF
Model	KM2604
Number of Outputs	4 x change-over
Max. Switching Current	16 A AC / 12 A DC
Nominal Switching Voltage	250 V AC / 30 V DC
Electrical Isolation	1.5 kV (K-bus/field potential)
Current Consumption (K-bus)	typ. 15 mA
Current Consumption (24 V DC)	50 mA per active relay
Operating Temperature	0 to +55 degC
Storage Temperature	-25 to +85 degC
Dimensions (W x H x D)	99 mm x 100 mm x 62 mm
Weight	approx. 250 g
Protection Rating	IP20

Installation Guidelines

Install the module on a 35 mm DIN rail in accordance with EN 60715 standards.
Ensure adequate spacing for heat dissipation if multiple modules are installed in high-load scenarios.
The module does not require address or configuration settings; ensure it is properly snapped onto the K-bus interface.
Operate within the specified ambient temperature of 0 to +55 degC.
Ensure wiring follows standard electrical codes, particularly when handling 230 V AC loads, to maintain safety and EMC compliance.

Key Features:

#BECKHOFF Bus Terminals #Relay Output Modules

What is the maximum starting current for lamp loads on the KM2604?

The module supports a maximum starting current of 25 A for electronic ballasts and lamp loads.

Does this relay module require software configuration?

No, the device has no address or configuration settings; it is plug-and-play within the I/O system.

What is the mechanical service life of the relays?

The relays are rated for a minimum of 5 x 10^6 mechanical operating cycles.

What is the isolation rating between the K-bus and field potential?

The electrical isolation is rated at 1.5 kV, with a 2.5 kV rated surge voltage.

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