4 Ton Hoist Overload Limiter
Product Introduction:
The overload limiter is a safeguarding device, which is specially designed for buidling hoist/construction elevator. The overload limiter can make alarm with sound and light, protecting the building hoist/construction elevator from being overloaded.
Technical Patrameters
| Item | Parameter | Item | Parameter |
| Display mode | 4-digit display | Rated load | 1-6t |
| Working temperature | -20~60℃ | Sensor working voltage | DC5-12V |
| Operating humidity | 95% | Sensitivity of the sensor | 1.0000Mv/v |
| Comprehensive error | ≤1%F.S | Installation | Slot type |
| Alarm output | AC250V/7A | Action error | ≤1%F.S |
| Buzzer | ≥90dB | ||
| Overload early warning |
≥ 95% of the rated weight(resettable); Relay status: coil power-off; normally-closed contact on; Buzzer status: intermittent ringing (one second with two seconds interval) |
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| Overload alarm |
≥ one second power-off (resettable) when 100% of the rated weight ; Relay status: coil is powered, normally-closed contact is off; Buzzer status: rapid ringing for two seconds. |
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| Instant alarm |
≥ at 105% of the rated weight (immediate power off); Relay status: coil is powered, normally-closed contact is off |
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| Alarm release | Alarm relieves automatically when the load is less than rated weight. | ||
Sensor installation
Product Features:
1. Perfect solution for building hoist/construction elevator's overload protection, with classic plastic shell, the load limiter is easy for installation;
2. High accuracy: Controller's measurement accuracy is better than 1%, which is much better than analog singal indicator;
3. Display: 4 digit display, 00.00-99.99, the limiter can acheive high accuracy weighing results;
4. Wide voltage range: AC110-440V, suitable for 99% of the construction site, which is more suitable than tranditional indicator
5. Single way normally closed contact for power cut-off;
6. Support RS232/485 communications, can be connected with monitor screen or PC.
7. Black box function: the overload limiter can record the data up to 4,000messages of load/overload during operation
8. Easy debugging, just press one button to correct all the weighing date without actual weights;
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