Chainbrake / Slow RPM / Stop Rotation Alarm

Our design and build electronics, giving the reliability and future service you require.

The simplest of controls to monitor any rotating shaft and alarm when the spinning slows or stops.

Small, robust, watertight, efficient and low cost.

Basic control, single sensor no ignore sensor

Comes with magnetic sensor and magnet, power lead, alarm and two led.

Magnet is fitted to the shaft and the sensor close by, every time the magnet passes the sensor the Sensor on the panel will light. This gives a manual check that the shaft is rotating as it flashes.

The unit will not be armed until the first pass of the magnet, after that it monitors the time between passes and compares to an adjustable time 0.5 to 5 seconds. If the time is exceeded then the alarm will sound for 10 seconds and the alarm led will illuminate until the next pass.

Basic control, optional second sensor, optional Headland / Ignore Sensor

Second Sensor - As the basic control but with a second sensor, totally independant of first sensor but triggers same alarm and alarm light

Headland / Ignore sensor - As the basic control but has additional sensor. When the magnet is close to this sensor the rotation sense and alarms are turned off. For example on a drill at the headland when turning around.

Specialist Bespoke Rotation Sensor Controls

As Hollin Applications build and design these controls in house in England. This allows us the flexibility to modifiy the initial design to suit your application.

For example in the control to the right, the rotation sensor has been expanded to 12 lanes for a seed drill monitoring system. The addition of the headland sensor and an external time adjust completes the package.

Each lane has individual lights for 6 left and 6 right.

The control connects to a complicated wiring junction box down on the drill.