Directing the precise power distribution to inductive loads, the Beckhoff KL2535 represents a high-efficiency 2-channel pulse-width modulation (PWM) output terminal integrated into the robust K-bus architecture. This industrial-grade output terminal is engineered specifically for control applications requiring current-regulated output power, such as proportional valves, solenoids, and magnetic coils. Utilizing high-frequency switching technology, it permits seamless duty-cycle adjustments from 0% to 100% with short-circuit and thermal-overload protection standard across both channels. Designed for DIN-rail deployment, the module maintains a compact form factor while providing galvanically isolated, high-resolution control signals directly from the standard PLC process image.
| Parameter | Specification Value |
|---|---|
| Manufacturer | Beckhoff Automation |
| Model / Article Number | KL2535 |
| Number of Outputs | 2 |
| Nominal Voltage | 24 V DC (-15% / +20%) |
| Load Compatibility | Inductive (> 1 mH), solenoid valves, coils |
| Max. Output Current | 2 x 1 A (short-circuit and thermal-overload proof) |
| PWM Frequency | 36 kHz |
| Duty Factor | 0% to 100% (current-controlled) |
| Resolution | Max. 12-bit |
| Electrical Isolation | 500 V (K-bus / field potential) |
| Current Consumption (K-bus) | Typically 60 mA |
| Current Consumption (Power Contacts) | Load current only |
| Process Image Width | 48 inputs/outputs (2 x 16-bit data, 2 x 8-bit control/status) |
| Configuration | Address-free; configures via Bus Coupler or controller |
| Operating Temperature Range | 0 to +55 degC |
| Storage Temperature Range | -25 to +85 degC |
| Relative Humidity Limit | 95%, non-condensing |
| Protection Rating | IP20 |
| Net Weight | 55 g |
| Shipping Weight (Calculated) | 0.25 kg |
| Package Dimensions (Calculated) | 12.5 cm x 8.0 cm x 2.4 cm |
| Terminal Connection Point | Circuit Allocation / Function |
|---|---|
| Point 1 | Output 1+ (PWM Current Output 1) |
| Point 5 | Output 1- (PWM Current Return 1) |
| Point 2 | Output 2+ (PWM Current Output 2) |
| Point 6 | Output 2- (PWM Current Return 2) |
| Point 3 | +24 V DC Field Power Supply Contact |
| Point 7 | 0 V DC Field Power Supply Contact |
| Point 4 & 8 | Shield / Protective Earth (PE) Connection |
The KL2535 operates within standard Beckhoff K-bus systems. For architectures utilizing EtherCAT protocols, the EL2535 EtherCAT Terminal serves as the natural functional migration path, matching form factors and general electrical outputs but adapting to the EtherCAT E-bus interface. If upgrading older standard terminals, verify that your active Bus Coupler (such as the BK3120, BK9000, or BC9000) is running compatible firmware to parse the 48-bit control and status registers allocated by the KL2535.
Thermal integration is a critical factor when driving both channels at their maximum 1 A current limits continuously. Under high ambient temperatures close to the 55 degC limit, proper vertical mounting and standard 10 mm lateral spacing from high-heat components are highly recommended. Note that because the PWM clock operates at 36 kHz, high-frequency current ripples can induce minor inductive heating inside solenoids if the load inductance is lower than 1 mH; verify load parameters prior to continuous cycling.
To minimize high-frequency electromagnetic emissions generated by the 36 kHz carrier signal, always utilize twisted-pair, shielded cabling for all load connections. Connect the cable shield directly to the designated PE terminal points (4 and 8) on the KL2535 housing or the system grounding rail. Avoid running output wires parallel to analog sensor cables to prevent crosstalk noise.
Isolate and lock out all electrical control and field power systems before installing, removing, or wiring the module. Handling terminals with active field potential can lead to controller-bus degradation, damage to output channels, or unexpected, hazardous actuation of connected mechanical actuators.
Global Express Shipping
Returns & Warranty
Manufacturer: BECKHOFF
Product No.: KL2535
Country of origin:Germany
Product Type: Bus Terminals
Payment: T/T, Western Union
Weight: 500g
Dimensions: 12.5 cm x 8.0 cm x 2.4 cm
Shipping port: Xiamen
Warranty: 12 months
Directing the precise power distribution to inductive loads, the Beckhoff KL2535 represents a high-efficiency 2-channel pulse-width modulation (PWM) output terminal integrated into the robust K-bus architecture. This industrial-grade output terminal is engineered specifically for control applications requiring current-regulated output power, such as proportional valves, solenoids, and magnetic coils. Utilizing high-frequency switching technology, it permits seamless duty-cycle adjustments from 0% to 100% with short-circuit and thermal-overload protection standard across both channels. Designed for DIN-rail deployment, the module maintains a compact form factor while providing galvanically isolated, high-resolution control signals directly from the standard PLC process image.
| Parameter | Specification Value |
|---|---|
| Manufacturer | Beckhoff Automation |
| Model / Article Number | KL2535 |
| Number of Outputs | 2 |
| Nominal Voltage | 24 V DC (-15% / +20%) |
| Load Compatibility | Inductive (> 1 mH), solenoid valves, coils |
| Max. Output Current | 2 x 1 A (short-circuit and thermal-overload proof) |
| PWM Frequency | 36 kHz |
| Duty Factor | 0% to 100% (current-controlled) |
| Resolution | Max. 12-bit |
| Electrical Isolation | 500 V (K-bus / field potential) |
| Current Consumption (K-bus) | Typically 60 mA |
| Current Consumption (Power Contacts) | Load current only |
| Process Image Width | 48 inputs/outputs (2 x 16-bit data, 2 x 8-bit control/status) |
| Configuration | Address-free; configures via Bus Coupler or controller |
| Operating Temperature Range | 0 to +55 degC |
| Storage Temperature Range | -25 to +85 degC |
| Relative Humidity Limit | 95%, non-condensing |
| Protection Rating | IP20 |
| Net Weight | 55 g |
| Shipping Weight (Calculated) | 0.25 kg |
| Package Dimensions (Calculated) | 12.5 cm x 8.0 cm x 2.4 cm |
| Terminal Connection Point | Circuit Allocation / Function |
|---|---|
| Point 1 | Output 1+ (PWM Current Output 1) |
| Point 5 | Output 1- (PWM Current Return 1) |
| Point 2 | Output 2+ (PWM Current Output 2) |
| Point 6 | Output 2- (PWM Current Return 2) |
| Point 3 | +24 V DC Field Power Supply Contact |
| Point 7 | 0 V DC Field Power Supply Contact |
| Point 4 & 8 | Shield / Protective Earth (PE) Connection |
The KL2535 operates within standard Beckhoff K-bus systems. For architectures utilizing EtherCAT protocols, the EL2535 EtherCAT Terminal serves as the natural functional migration path, matching form factors and general electrical outputs but adapting to the EtherCAT E-bus interface. If upgrading older standard terminals, verify that your active Bus Coupler (such as the BK3120, BK9000, or BC9000) is running compatible firmware to parse the 48-bit control and status registers allocated by the KL2535.
Thermal integration is a critical factor when driving both channels at their maximum 1 A current limits continuously. Under high ambient temperatures close to the 55 degC limit, proper vertical mounting and standard 10 mm lateral spacing from high-heat components are highly recommended. Note that because the PWM clock operates at 36 kHz, high-frequency current ripples can induce minor inductive heating inside solenoids if the load inductance is lower than 1 mH; verify load parameters prior to continuous cycling.
To minimize high-frequency electromagnetic emissions generated by the 36 kHz carrier signal, always utilize twisted-pair, shielded cabling for all load connections. Connect the cable shield directly to the designated PE terminal points (4 and 8) on the KL2535 housing or the system grounding rail. Avoid running output wires parallel to analog sensor cables to prevent crosstalk noise.
Isolate and lock out all electrical control and field power systems before installing, removing, or wiring the module. Handling terminals with active field potential can lead to controller-bus degradation, damage to output channels, or unexpected, hazardous actuation of connected mechanical actuators.
Global Express Shipping
Returns & Warranty
Orders are processed and delivered Monday-Friday (excluding public holidays).
For full eligibility, restocking fees, and international return details, please view our official Refund & Return Policy .
| Country of origin |
Germany
|
Replacing a 1756-L73 does not automatically mean upgrading its firmware. This guide compares v19.013, v21.011 and v31.011, focusing on project compatibility, HMI communications, legacy networks and...
Implement a 3-SPST switch XOR light circuit in LogixPro or RSLogix 500 using an internal relay bit. Includes truth tables, boolean equations, and verified.
Integrate Allen-Bradley CompactLogix, Caterpillar ATS, and generators into DeltaV DCS over Modbus RTU. Covers ProSoft MVI69-MCM, Miille DIN266 gateways.
ONS instruction fires but the OTE coil never latches in Studio 5000 because the one-shot is only true for one scan. Use OTL/OTU or seal-in logic instead.
Configure Allen-Bradley Kinetix 5500 servo drives on EtherNet/IP. Covers CIP Sync, IEEE 1588 V2 timing, Stratix selection, DLR topology, and HMI.
A moving-average filter is the sliding-window smoother most instrument engineers drop into DCS and PLC analog paths. Here is how the window works, how N and sample time set lag, and when a...
