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RenteZhihe (Jiangsu) Equipment Technology Co., Ltd. is a national high-tech enterprise integrating the R&D and production of stage machinery, performance equipment, industrial machinery, and intelligent systems.
We are China Pilewind Winch with Slack Line Safety Sensors Manufacturers and Wholesale Pilewind Winch with Slack Line Safety Sensors OEM/ODM Suppliers, the company owns two modern production workshops covering an area of 13,000 square meters and a 7,000-square-meter office building. Since its establishment in 2012, relying on superior quality and technological innovation, it has gradually developed into a professional manufacturer of stage machinery and equipment that integrates R&D and design, production and sales, installation and commissioning, as well as technical services.
It has eight offices nationwide, covering major core cities in North China, East China, South China, Northwest China, and Southwest China. Equipped with a professional technical team and more than 30 sets of production equipment, the company always regards technological innovation as the core driving force of enterprise development. With over ten years of experience accumulation and technological innovation, it has provided high-quality stage machinery and equipment for more than 1,000 engineering projects, including cultural and art centers, gymnasiums, conference centers, theaters, school auditoriums, and entertainment performance venues, as well as long-term maintenance services for products and equipment.
In addition, the company also provides OEM processing and non-standard customization services for stage machinery and equipment. Its products sell well both at home and abroad, winning high recognition from customers, project owners, and all sectors of society.
Technical Specifications
| Model | PW-SL-500 / PW-SL-1000 |
| Load Capacity | 500 kg / 1000 kg |
| Slack Detection Threshold | Adjustable 5-15% of rated load |
| Lifting Speed | 0.15 – 0.4 m/s |
| Lifting Height | Up to 20 meters |
| Motor Power | 2.2 kW – 5.5 kW |
| Power Supply | 380V / 50Hz / 3-Phase |
| Cable Diameter | 6 mm – 10 mm steel wire rope |
| Brake System | Dual redundant electromagnetic brake |
| Sensor Output | Digital alarm and analog load signal |
| Response Time | < 100 ms |
| Protection Class | IP54 |
| Weight | Approx. 220 – 500 kg |
Applications
Performer Flying Systems – Critical safety feature for flying actor applications.
Valuable Scenery Lifting – Protects expensive and delicate scenery elements.
Live Show Productions – Enhances safety for productions with complex rigging.
Rental Applications – Provides safety confidence for rental equipment use.
Theme Park Show Systems – Safety-critical monitoring for themed attractions.
Safety-Conscious Venues – Suitable for venues with strict safety requirements.
Key Advantages
Slack Line Detection – Automatically detects and responds to cable tension loss.
Immediate Shutdown – Stops operation within 100ms of slack detection.
Operator Warning – Provides visual and audible alarms when slack is detected.
Adjustable Threshold – Can be configured for specific application requirements.
Enhanced Safety – Provides critical safety monitoring for performer-adjacent applications.
Data Output – Provides tension data for monitoring and logging.
Payment & Shipping
Payment Terms: T/T (30% + 70%), L/C at sight.
Lead Time: 30–40 working days.
Packaging: Export crating with sensor protection.
Shipping: FOB Shanghai.
Calibration Service: Sensor calibration and verification service available.
Warranty: 24 months including sensors.
Frequently Asked Questions
Q: What causes cable slack in stage hoist applications?
A: Cable slack can occur from snagging on scenery, cable entanglement, or mechanical issues. The sensors provide immediate detection and shutdown to prevent dangerous situations.
Q: Does the slack detection system require calibration?
A: Yes, we recommend annual verification of the slack detection system. Our service team provides calibration and testing services.
Q: Can the slack detection system be bypassed?
A: For safety reasons, the system cannot be permanently bypassed. A test mode is available for maintenance and fault diagnosis purposes.
