Manufacturer: BECKHOFF
Product No.: KL3042
Country of origin:Germany
Product Type: Bus Terminals
Payment: T/T, Western Union
Weight: 500g
Shipping port: Xiamen
Warranty: 12 months
Processing analog input signals within the Beckhoff I/O system, the BECKHOFF KL3042 Bus Terminal features two channels designed to acquire standard industrial currents ranging from 0 to 20 mA. This 12-bit resolution terminal operates on a single-ended technology scheme, providing highly reliable communication to the upper-level K-bus. By integrating an onboard sensor supply, this device minimizes the need for external distribution terminals, streamlining cabinet wiring in space-constrained industrial installations.
| Parameter | Specification Value |
|---|---|
| Manufacturer | Beckhoff Automation |
| Model Series | KL Bus Terminal Series |
| Number of Inputs | 2 channels |
| Signal Current Range | 0 to 20 mA |
| Resolution | 12-bit |
| Technology Type | Single-ended |
| Internal Resistance | 80 ohms + diode voltage 0.7 V |
| Conversion Time | approx. 2 ms |
| Measurement Uncertainty | < +/-0.3 percent (relative to full scale value) |
| Surge Voltage Resistance | max. 35 V DC |
| Electrical Isolation | 500 V (K-bus / signal voltage) |
| Current Consumption (K-bus) | typ. 65 mA |
| Process Image Bit Width | Input: 2 x 16-bit data (2 x 8-bit control/status optional) |
| Operating Temperature | -25 to +60 degC |
| Storage Temperature | -40 to +85 degC |
| Relative Humidity | 95 percent, non-condensing |
| Protection Rating | IP20 (variable installation position) |
| Approvals & Markings | CE, UL, ATEX, IECEx, DNV GL |
| Ex Marking | ATEX: II 3 G Ex ec IIC T4 Gc / IECEx: Ex ec IIC T4 Gc |
| Country of Origin | Germany |
| Shipping Weight (Calculated) | 0.07 kg (exclusive of protective packaging) |
| Terminal Connection Point | Functional Assignment |
|---|---|
| 1 | Analog Input 1 (+) |
| 2 | Sensor Supply 1 (+24 V DC) |
| 3 | 0 V Sensor Supply (connected internally with point 7) |
| 4 | Shield / Functional Earth (PE) |
| 5 | Analog Input 2 (+) |
| 6 | Sensor Supply 2 (+24 V DC) |
| 7 | 0 V Sensor Supply (connected internally with point 3) |
| 8 | Shield / Functional Earth (PE) |
For installations requiring fast-disconnect options or pre-wired cable harnesses, transition to the KS3042 model, which features pluggable connection blocks with identical technical ratings. Ensure the K-bus coupler (e.g., BK9000 or BK1100) firmware is up to date to properly map the 2 x 16-bit process image in your TwinCAT System Manager software configuration.
Because this is a single-ended input card, all channels share an internal common reference point. Connecting loop transmitters that have distinct, non-isolated grounds can generate ground-loop currents, resulting in measurement deviations or card errors. If utilizing active, externally powered 4-wire transmitters, ensure the loop signal remains isolated or shares a common 0 V DC potential with the cabinet supply bus.
Always route current loop cabling using shielded, twisted-pair lines. Terminate the shield directly to connections 4 and 8 (PE) at the terminal, or land them on an auxiliary shield clamp bus bar positioned directly at the entry of the control panel to minimize electromagnetic interference from neighboring variable frequency drives.
Mount the bus coupler on a standard 35 mm DIN rail (EN 60715) and lock it into place using the integrated rail clamp.
Slide the module along the guide slot of the adjacent terminal until the tongue-and-groove joint is fully locked.
Press the module firmly against the DIN rail until the side latching mechanism clicks, indicating secure grounding contact.
Using a standard flat-head screwdriver, insert wire leads into the tension clamp connection points and release the spring mechanism to complete the connection.
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| Country of origin |
Germany
|
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