Beckhoff EL2535-0050 EtherCAT Terminal 2-Channel PWM Output Module

Only 10 item(s) left in stock

Manufacturer: BECKHOFF
Product No.: EL2535-0050
Country of origin:Németország
Product Type: EtherCAT Terminals
Payment: T/T, Western Union
Weight: 2000g
Dimensions: 120 mm x 80 mm x 25 mm
Shipping port: Xiamen
Warranty: 12 months

Description

Designed to deliver highly precise current-controlled modulation within distributed control networks, the Beckhoff EL2535-0050 functions as a dual-channel pulse-width modulation (PWM) output terminal for 24 V DC applications. This compact 12 mm module modulates inductive loads up to 50 mA with a default switching frequency of 30 kHz. Featuring integrated push-pull outputs and two auxiliary 24 V DC digital inputs, it enables responsive closed-loop control of thermoelectric coolers, miniature DC motors, and proportional valves directly on the EtherCAT segment.

Key Features

Dual-Channel Current Control: Two independent push-pull PWM channels operating up to ±50 mA current limits.
High-Frequency Modulation: High-speed 30 kHz default PWM clock frequency with a duty factor ranging from 0% to 100% at 10-bit resolution.
Integrated Digital Inputs: Two physical 24 V DC digital inputs for direct hardware feedback, limit sensing, or local trigger control.
Robust Protection: Built-in short-circuit current protection (limiting at less than 500 mA typical) and reverse voltage protection.
Electrical Isolation: Comprehensive 500 V isolation barrier separating the internal E-bus circuitry from the field potential.
Standardized Housing: Compact 12 mm IP20 enclosure featuring diagnostic LEDs for direct status indication of E-bus communication and channel states.

Applications

Proportional Valve Control: Smooth, hysteresis-minimized current modulation for microfluidic and industrial pneumatic valves.
Peltier Element Regulation: Precision thermoelectric heating and cooling control loop systems.
Miniature DC Motors: Current-limited speed and torque regulation of micro-motors.
Optical and Laser Systems: Dynamic adjustment of lighting arrays, excitation LEDs, and heating stages.

Technical Specifications

Parameter	Value / Specification
Manufacturer	Beckhoff Automation GmbH & Co. KG
Model Number	EL2535-0050
Connection Technology	PWM output, push-pull outputs
Number of Outputs	2
Nominal Voltage	24 V DC (-15% / +20%)
Load Type	Inductive (greater than 1 mH)
Maximum Output Current	±50 mA
Short-Circuit Current	Less than 500 mA typical
PWM Clock Frequency	30 kHz default
Duty Factor	0% to 100% (current-controlled)
Resolution	10 bit
E-Bus Current Consumption	Typical 110 mA
Power Contacts Current Consumption	Typical 30 mA + load
Process Image Bit Width	48 inputs/outputs (2 x 16 bit data, 2 x 8 bit control/status)
Digital Inputs	2 x digital 24 V inputs
Electrical Isolation	500 V (E-bus / field potential)
Operating Temperature	0 to +55 degC
Storage Temperature	-25 to +85 degC
Relative Humidity	95%, non-condensing
Protection Class	IP20
Approvals & Markings	CE, UL, ATEX (II 3 G Ex nA IIC T4 Gc), cFMus Class I Div 2
Country of Origin	Germany
Net Weight	50 g
Shipping Weight (Calculated)	0.15 kg
Dimensions (W x H x D)	12 mm x 100 mm x 68 mm
Package Dimensions (Calculated)	120 mm x 80 mm x 25 mm

Connections and Interfaces

Terminal Point	Signal Assignment	Description
1	PWM Output 1 (+)	Positive connection for PWM Channel 1
5	PWM Output 1 (-)	Negative connection (return) for PWM Channel 1
2	PWM Output 2 (+)	Positive connection for PWM Channel 2
6	PWM Output 2 (-)	Negative connection (return) for PWM Channel 2
3	Digital Input 1	24 V DC auxiliary digital input for feedback loop 1
7	Digital Input 2	24 V DC auxiliary digital input for feedback loop 2
4	+24 V DC Power Contact	Internal feed connection to positive power rail
8	0 V DC Power Contact	Internal feed connection to negative power rail

Empirical Engineering Insights

Alternative Models & Compatibility

Unlike the standard voltage-controlled PWM terminal counterparts, the specialty current-controlled EL2535-0050 regulates output current directly to compensate for temperature-dependent coil resistance variations. Ensure TwinCAT 2.11 (or higher) is configured with the correct XML device description (ESI) file to avoid driver mismatch faults during hardware scanning.

Application Pitfalls & Engineering Notes

This terminal requires a minimum inductive load of 1 mH. Connecting highly capacitive or purely resistive loads with low inductance values can cause high-frequency oscillations, trigger internal short-circuit limits (under 500 mA), and prevent steady current regulation. In high-density mounting arrays, ensure vertical installation alignment to allow adequate passive thermal dissipation across the polycarbonate terminal housing.

Commissioning & Wiring Tips

Due to the 30 kHz carrier frequency, we advise utilizing shielded twisted-pair (STP) cabling for connection to the actuator coils. Run the shield to an external grounding clamp (such as the Beckhoff KL9080 shield terminal) as close to the entry point of the electrical cabinet as possible to prevent electromagnetic interference from bleeding into parallel low-voltage analog signals.

Installation Guidelines

CRITICAL WARNING

Isolate all 24 V DC field-side power contacts and standard E-bus power supplies before installing, removing, or wiring any EtherCAT terminals. Electrostatic discharge and hot-swapping can damage sensitive internal bus components.

Align the terminal side-by-side using the double slot-and-key system, then slide it firmly onto a standard 35 mm DIN rail (conforming to EN 60715) until the lock clicks.

Strip wire leads to exactly 8 to 9 mm. Use a flathead screwdriver to depress the spring-actuated terminal mechanism, insert the wire, and release to secure. Solid or ferruled conductors can be pushed directly.

Verify connection cross-sections: use AWG 28 to 14 for solid/stranded wires, and AWG 26 to 16 for wires terminated with ferrules.

Key Features:

What is the primary difference between the standard EL2535 and the EL2535-0050 model?

The EL2535-0050 features current-controlled pulse-width modulation, regulating output current dynamically up to 50 mA. This design mitigates coil resistance fluctuations caused by temperature swings, unlike standard voltage-controlled PWM modules.

Does this terminal support Distributed Clocks (DC) synchronization?

No, the EL2535-0050 does not feature Distributed Clocks synchronization. It runs on the basic EtherCAT cycle.

What happens if I connect a resistive load with less than 1 mH inductance?

Loads with less than 1 mH inductance may cause high-frequency current oscillations, which can trigger the internal short-circuit protection (typically below 500 mA) and cause erratic output control.

Are the two auxiliary digital inputs configurable?

Yes, they are standard 24 V DC digital inputs mapped into the EtherCAT process image (2 x 8 bit control/status) and can be configured as feedback triggers within your control loop.

Globális expressz szállítás

Normál szállítás: 4-6 munkanap a DHL, FedEx és UPS szolgáltatásával.
Gyors kiszállítás: A raktáron lévő, 14:00 (GMT+8) előtt leadott megrendeléseket aznap feladjuk.
Világszintű lefedettség: Több mint 150 országban szolgálunk ki, beleértve a gyors szállítást Szaúd-Arábiába és az Egyesült Arab Emírségekbe.

Visszaküldés és garancia

30 napos garancia: Csak a raktáron lévő termékek eredeti, gyári zárt csomagolásban történő visszaküldését fogadjuk el.
12 hónapos garancia: Minden ipari alkatrészünket szakmai műszaki garancia védi.

A megrendeléseket hétfőtől péntekig dolgozzuk fel és szállítjuk (állami ünnepnapok kivételével).

A teljes jogosultság, a készletfeltöltési díjak és a nemzetközi visszaküldési részletek megtekintéséhez kérjük, tekintse meg hivatalos oldalunkat Visszatérítési és Visszaküldési Szabályzat .

TECHNICAL SPECIFICATIONS

Country of origin

Nemrég megtekintett termékek

Műszaki ismeretek

Electric Actuators Designed to Replace Fluids: Hands-on Tutorial

Elektromos működtetők, amelyek a folyadékenergia-rendszereket váltják ki: Gyakorlati ipari automatizálási útmutató

Ez a cikk bemutatja, hogyan alakítják át az integrált elektromos működtetők, például az SMC e-Actuator sorozata, az ipari mozgásvezérlést azáltal, hogy kiváltják a hagyományos pneumatikus és...

2026. június 23.

$Math Operations Using OpenPLC for Industrial Automation Applications$

Beckhoff EL2535-0050 EtherCAT Terminal 2-Channel PWM Output Module