Beckhoff KL4021 Analog Output Terminal

Description

The KL4021 is a high-precision, 1-channel analog output terminal designed for the Beckhoff Bus Terminal system. It generates standard industry signals ranging from 0 to 20 mA, utilizing single-ended output technology. With a 12-bit resolution and a fast conversion time of approximately 1.5 ms, this terminal is ideal for controlling analog actuators or process instrumentation in industrial automation environments. The module provides robust electrical isolation between the K-bus and field signals, ensuring reliable data transmission.

Features

• 1-channel analog output (0…20 mA)
• Single-ended technology
• 12-bit resolution for precise signal control
• Fast conversion time (~ 1.5 ms)
• Robust electrical isolation (500 V)
• Certified for hazardous areas (ATEX/IECEx)

Technical Specifications

Installation Guidelines

• Mounting: Secure the KL4021 onto a standard 35 mm DIN rail (EN 60715). Ensure the locking mechanism is engaged for proper power contact with the terminal bus.
• Power Supply: Operates on 24 V DC via power contacts. If 15 V DC operation is required for specific application needs, a KL9515 power supply terminal must be used.
• Wiring: Use shielded twisted-pair cables for analog signal connections to minimize electromagnetic interference (EMI). Ground the shield correctly at the signal source or load to maintain signal integrity.
• Safety: In hazardous environments (ATEX/IECEx Zone 2), ensure the terminal is housed in an enclosure that meets the requirements for the specific area classification.
• Environment: Maintain operating temperatures between 0 degC and +55 degC and keep relative humidity below 95% (non-condensing).