- Zero Speed Monitor is a maintenance free system.
- Variable initial by-pass delay avoids faulse tripping.
- Wide speed sensing range is available.
- Robust cast aluminium enclosure with IP55 protection, suitable for wall mounting.
- LED indication for power ON, relay ON, speed pulses.
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Circular / linear motion is sensed by Inductive Proximity Sensor. When flag is passed through the sensing face of proximity sensor, pulses are produced. These pulses are fed to the Zero Speed Monitor. These pulses are then compared with reference comparator. Whenever speed drops below the set value, digital comparator detects the same and output relay is switched on.
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| Supply Voltage |
230 V AC ± 15 % 110 V AC ± 15 % 24 V AC ± 15 % |
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| Speed Range | 1-10 / 10-100 / 100-1000 / 5-50 / 50-500 / 500-5000 | ||||||||||
| Hysterisis | 5% of the set value. | ||||||||||
| Repeat Accuracy | Within ± 1 % | ||||||||||
| Speed Setting Accuracy | Within ± 15 % of designed value. | ||||||||||
| Contact Rating | 5A / 240 V AC for resistive load. | ||||||||||
| Operating Temperature | 60o C maximum | ||||||||||
| Protection | IP55 | ||||||||||
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No. of flags |
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| On powering the Zero Speed Monitor; output relay instanteneously gets on. If the system speed reaches the set value within the initial by-pass delay period, the relay remains ON. Thus it keeps the contactor in ON condition to keep the system motor ON. Now, after initial by-pass delay period, at any time the system speed drops below the set value; the output relay gets OFF & in turn switches OFF the contactor. |
| Zero Speed Monitor is mainly useful for material handling systems, conveyors, bucket elevator, pick & place mechanism, crushers, Industrial mixers, disintigrator mills, punching machines, chain drives & other rotating machines. It can also be used as overload detector, stall detector to protect AC/DC motors, precision machine and machines drives. |
