Elevator Speed Sensors: Instant Bucket and Shaft Rotation Control

Looking for reliable elevator speed sensors? This section features original 4B Braime Components (UK) equipment — the global leader in elevator safety systems. Our elevator speed sensors provide continuous monitoring of shaft, bucket, and belt rotation, instantly detecting slip, speed reduction, or complete stop. This prevents accidents, chain breakage, bucket fall into the shaft, and downtime at grain elevators, feed mills, and flour mills.

Advantages of 4B Elevator Speed Sensors

Why choose 4B Braime speed sensors?

• High measurement accuracy: Respond to deviations from 1 rpm (less than 1% error).

• Contactless operation: Magnetic or inductive sensors — no wear, up to 10-year lifespan.

• Harsh environment resistance: IP67 housing, -40°C to +120°C, ATEX Zone 20/21 dust.

• Easy integration: 4-20 mA, relay, PNP/NPN, Modbus output, SCADA compatible.

• Automatic shutdown: At 10–20% speed drop — instant controller signal.

How Speed Sensors Work in Elevators

Elevator speed sensors are mounted on the drive shaft, pulley, or near buckets. They detect pulses from magnetic markers (Whirligig) or metal buckets. When the belt slips (e.g., due to grain buildup), speed drops — the system triggers emergency stop in 0.5 seconds. This protects against:

• Belt or chain rupture

• Bucket fall into the shaft

• Bearing overload due to uneven load

Main Speed Sensor Models

WDB810 — Contactless Sensor on Bearing Unit

Thermal + speed control in one housing. Mounted on elevator bearing, responds to slip and heat. Ideal for chain elevators. Range: 10–3600 rpm. Output: relay, 4-20 mA. Protection: IP67, ATEX. Temperature: -40…+120°C.

MSB — Magnetic Speed Sensor

Requires Whirligig (rotating disc with magnets). Accuracy ±0.5 rpm. Suitable for belt elevators with shaft up to 500 mm. Range: 2–5000 rpm. Output: PNP/NPN. Protection: IP68, ATEX. Temperature: -30…+100°C.

P800 Proxswitch — Inductive Proximity Sensor

Responds to metal buckets without markers. Mounted near the belt, monitors speed and chain integrity. Range: 1–3000 rpm. Output: relay. Protection: IP67, ATEX. Temperature: -25…+80°C.

Watchdog™ Super Elite — Comprehensive System

Combines speed, temperature, misalignment, vibration. Display, event log, Modbus, IoT.

Application Areas

Ideal for:

• Grain elevators (50–500 t/h elevators)

• Feed mills

• Flour milling complexes

• Ports (high-speed elevators)

• Bulk material warehouses

Installation at Grain Elevator

On a 30 m elevator, WDB810 is mounted on the bottom shaft. When moisture causes 12% belt slip — the system blocks grain feed, preventing accident. Payback — 3 months.

Use at Feed Mill

In dusty ATEX environment, P800 + Whirligig is used. Sensor detects each bucket pass, ensuring uniformity. Bolt failure — instant stop.

Certification and Warranty

• ATEX Zone 20/21, IECEx, DSTU

• 24-month warranty

• Compliance certificates

Automation Integration

• Modbus RTU, Profibus, Ethernet/IP

• Connection to WinCC, Ignition, Owen Logic

• Cloud monitoring via 4B Cloud

Order elevator speed sensors from KCK.ua with delivery across Ukraine (Kyiv, Kharkiv, Odesa, Dnipro, Lviv). Official 4B Braime distributor — installation, commissioning, training.

Ensure continuous elevator operation today! Order: +38 (044) 494-33-55 | kck@kck.ua

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