Vibration Detector VD-10 [PDF]
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Help protect mechanical equipment F r o m d a m a g e w i t h t h e Vi b r a t i o n S w i t c h Vibration Detector The Vibration Detector is a safety device, which quickly detects abnormalities in mechanical equipment in order to help prevent breakdown. The reliable performance of the Vibration Switch is time proven it has received very favorable user response from the time it was first marketed over 30 years ago. If the detector is subjected to vibration acceleration in the "Direction of vibration", a moment will be set up around the spring joint of the armature, tending to separate the armature from magnet below it. Similarly, the adjusting spring will also generate a moment around the spring joint, tending to separate the armature from the magnet. When the sum of these moments is larger than the moment acting around the spring joint due to the magnet attracting the armature, the armature will come away from the stop pin below. As the result of the motion of the armature, a micro-switch will be actuated, triggering an alarm signal. Type of DETECTOR The Vibration Detector is available in a weather-resistant version. DETECTOR Detectors used with the Vibration Detector are installed directly on the pump, motor and fan of the piece of equipment to be monitored in order to detect abnormal vibration due to a mechanical failure of these units in terms of acceleration. Generally, if a breakdown occurs in mechanical equipment driven by an electric motor or internal combustion engine, such phenomena as temperature rise, increased noise and excessive current will occur. In addition, "Abnormal Vibration" always occurs along with these phenomena. This abnormal vibration consists of 2 elements; abnormal frequency (number of vibrations per second) and abnormal amplitude. Consequently, when safeguarding a piece of equipment by the method of detecting abnormal vibration, it is not sufficient to detect only one of these elements. For example, if the amplitude of the vibration is measured using an amplitude meter, it will not be possible to detect a frequency abnormality. Also an abnormal amplitude resulting from eccentricity of a piece of rotating machinery will not show up in the vibration frequency. A Vibration Detector detects abnormal vibration by means of acceleration, which is common to both amplitude and frequency.

Specification Type Model Setting range Recommended range Resolution Range Frequency range Accuracy Form Contact form Output Capacity Operation Reset power Reset Coil rating Power consumption Temperature Environmental Condition Humidity Protection degree Construction Ex-approval Cable connection Case material Color Mass Standard VD-10 0 ~ 44.1m/s2 (0 ~ 4.5G) 4.9 ~ 44.1m/s2 (0.5 ~ 4.5G) 0.98m/s2 (0.1G) 0 ~ 300Hz +/- 2.21m/s2 Relay output S.P.D.T. 125/250V AC (3A) 48V DC (1A) 125V DC (0.5A) 250V DC (0.25A) Manual reset : Reset button operation Remote reset: Remote reset by power supply 100 ~...