Product Overview

The KFU8-DW-1.D is an industrial-grade speed monitor, primarily used for speed detection, alarm, and protection of rotating equipment. With its inherently safe design and high reliability, it is well-suited for speed monitoring needs in harsh industrial environments. A detailed overview follows:

I. Core Positioning and Application Scenarios

II. Core Performance and Functions

1. Signal Adaptation and Measurement Range

• Input Signal: Compatible with incremental encoder signals (HTL/TTL), sine wave signals, and supports various output types of sensors such as push-pull and open collector, offering strong adaptability.
• Measurement Specifications: Wide speed measurement range (typically 0.1~100000 min⁻¹, depending on the input signal frequency), meeting the monitoring needs of equipment at different speed levels.
• Signal Processing: Fast response time (≤ 10 ms), high measurement accuracy, accurately capturing instantaneous changes in speed, avoiding missed or false alarms.

2. Alarm and Protection Functions

• Threshold Setting: Supports configuring upper and lower speed alarm thresholds via knob or software, offering convenient operation and flexible adjustment according to the equipment's rated speed.
• Output Method: Equipped with relay output (usually DPDT contacts), capable of directly driving alarm devices (such as audible and visual alarms) or control circuits (such as equipment shutdown interlocks), with strong contact load capacity (typically 250 V AC/2 A, 40 V DC/2 A).
• Fault Detection: Some models support sensor circuit fault detection (such as open circuit, short circuit), further improving system reliability.

3. Intrinsic Safety and Power Supply Characteristics

• Explosion-proof Design: Intrinsically safe (Ex ia IIC Ga), certified by ATEX, IECEx, etc., safe for use in hazardous areas, eliminating the risk of ignition sources.
• Power Supply Specifications: Compatible with a wide voltage range of 18~30V DC, low power consumption at 24V DC (typically ≤ 1.5W), compatible with industrial standard power supply systems, and energy-efficient.

III. Physical and Environmental Characteristics

• Installation and Dimensions: Mounted on a 35 mm DIN rail, compact in size (typical dimensions 12.5 mm × 105 mm × 115 mm), weighing approximately 120~150 g, saving control cabinet space and facilitating dense layouts.
• Protection and Tolerance: IP20 protection rating, operating temperature -20~60 °C, storage temperature -40~85 °C, relative humidity 95% (non-condensing), resistant to vibration (10~2000 Hz, 10 g) and shock (100 g, 3 ms) according to EN 60068 series standards, suitable for harsh industrial environments such as dust, humidity, and vibration.

IV. Core Advantages

• Safety and Adaptability: Intrinsically safe design + authoritative explosion-proof certification, perfectly adapted for monitoring rotating equipment in hazardous areas.
• Accuracy and Reliability: Wide speed measurement range + fast response + high measurement accuracy ensures timely warning of abnormal speed.
• Convenience and Practicality: DIN rail mounting + wide voltage power supply + intuitive threshold configuration, adaptable to industrial site installation and operation needs.

Product Specifications

Key Benefits at a Glance

• Speed monitoring up to 40 kHz
• 1 pre-select value with relay output and LED indicator
• 2-, 3-, 4-wire and NAMUR sensors as well as rotary encoder connectable
• Start-up delay
• Menu driven operation via 4 front keys
• Period measurement
• Output signal can be inverted
• Display devices can be set between 0.1 ... 2.5 sec.

Delivery Information

Delivery information typically includes delivery times, shipping methods, packaging, etc., which may vary depending on the seller and the location of purchase.

Manuals & Resource

KFU8-DW-1.D Rotation Speed Monitor Datasheet.pdf

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