Beckhoff KL3204 4-Channel Analog Input Terminal

Overview

KL3204 Original New in Stock

Parameters

Note: Specifications are indicative. The KL3204 is a K-Bus RTD input terminal with 4 channels. Exact supported sensor types, wiring modes, resolution, accuracy, temperature range, terminal width, and diagnostic functions must be verified against the current Beckhoff datasheet for your revision. The KL series differs from the EtherCAT EL series in the bus system used.

Core Advantages

1. Four RTD Inputs in One Terminal
Four independent RTD input channels in a single Bus Terminal housing — higher channel density for multi-point temperature measurement in K-Bus systems, reducing cabinet space compared to multiple 2-channel terminals.

2. Direct RTD Connection
Connects PT100/PT1000 resistance temperature detectors directly to the Bus Terminal, providing temperature measurement without external transmitters.

3. 2-/3-/4-Wire Connection Support
Supports multiple wiring modes, with 3- and 4-wire connection compensating for line resistance to improve measurement accuracy. Confirm the exact supported modes in the datasheet.

4. High-Resolution Temperature Measurement
Typically 0.1 °C resolution for fine temperature measurement. Confirm the exact resolution in the datasheet.

5. K-Bus System Integration
Integrates into the Beckhoff Bus Terminal system via the K-Bus, working with Bus Couplers and Bus Terminal Controllers for fieldbus connectivity.

6. Channel-Wise Diagnostic Capability
Status LEDs and wire-break detection (where supported) support commissioning and fault identification.

7. Compact and Robust Industrial Design
IP20-rated, DIN-rail mounted, with electrical isolation between the input channels and the K-Bus.

Applications

• Machine building — multi-point temperature monitoring of bearings, motors, and gearboxes.

• Process technology — temperature measurement in process plants.

• HVAC and building automation — duct and pipe temperature measurement.

• Legacy K-Bus systems — expansion and maintenance of existing Bus Terminal installations.

• OEM equipment — embedded multi-point temperature sensing in industrial machines.

• Test benches — precise temperature acquisition in validation and R&D rigs.

• Food and pharmaceutical — temperature monitoring in regulated processes.

FAQ

Q1: What is the KL3204 used for?
It is a 4-channel RTD input terminal for the Beckhoff K-Bus Bus Terminal system, used to measure temperature with PT100/PT1000 resistance temperature detectors.

Q2: What is the difference between KL3202 and KL3204?
The KL3202 provides 2 RTD input channels; the KL3204 provides 4 channels. Choose based on the number of temperature measurement points required.

Q3: What is the difference between KL3204 and KL3208?
The KL3204 provides 4 channels; the KL3208 provides 8 channels. Choose based on the number of temperature measurement points required.

Q4: Which sensor types are supported?
PT100 and PT1000 are typically supported. Confirm the exact supported sensor types in the current datasheet.

Q5: Does it support 3-wire and 4-wire connection?
2-, 3-, and 4-wire connection are typically supported; 3- and 4-wire modes compensate for line resistance. Confirm the exact supported modes in the current datasheet.

Q6: How is the terminal configured?
Configuration is performed through the Bus Coupler or Bus Terminal Controller (e.g., via KS2000 or TwinCAT). Confirm the exact workflow in the datasheet.

Q7: Does it require an external 24 V supply?
The terminal logic is powered from the K-Bus. Confirm the exact supply requirements in the datasheet.

Q8: Is the KL3204 suitable for safety functions?
No. It is a standard automation terminal and is not a certified safety component. Use appropriately certified hardware for safety-related temperature monitoring.

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