SHGV/L01/x1x+x3x Multi-Channel Safety Relay Module Robot Automation EN 61508

1. Product Overview

​
The Schmersal SHGV/L01/x1x+x3x series represents a sophisticated rope-operated emergency stop (E-stop) system engineered for safeguarding extensive machinery or conveyor lines. This modular solution consists of two core components working in tandem: the SHGV/L01/x1x control box unit and the SHGV/L01/x3x rope tensioner unit. The system utilizes a rugged stainless steel wire rope stretched along hazardous machine sections, enabling personnel to trigger an emergency stop by pulling the wire from any point along its length. Upon actuation, the tensioner detects the wire pull or slackness and sends a signal to the control box, which houses high-reliability safety contacts designed for immediate response. Built to withstand demanding industrial environments, the control box typically features a robust plastic or metallic housing with standard IP65 ingress protection, while the rope material and termination points are designed for corrosion resistance and longevity in harsh conditions like factories, warehouses, or outdoor installations.

​2. Key Technical Parameters

​
The SHGV/L01 control box variant (x1x) operates at a standard safety control voltage of 24V DC (often ranging from 24V DC to 230V AC) and features safety-rated dual-channel contacts configured in positive-break NC (Normally Closed) operation with mechanically linked contacts – essential for achieving high Safety Integrity Levels (SIL 3 per IEC 62061, PL e per ISO 13849-1). The exact contact rating depends on the specific configuration but commonly handles loads such as 6A / 250V AC. The x1x suffix denotes options like cable entry types (M20, M25 glands) and auxiliary drain plugs. The x3x suffix specifies the tensioner unit's rope material (stainless steel standard) and length signal outputs (x3x includes a dedicated signal contact indicating rope condition – taut or slack/pulled). Wire rope lengths are customizable, often supporting runs exceeding 100 meters. Both units boast high mechanical durability, with key components rated for millions of operating cycles and the rope designed for high tensile strength, ensuring reliable initiation of the emergency stop function under strenuous conditions.

​3. Primary Applications and Use Cases

​
The SHGV/L01/x1x+x3x system is predominantly deployed in scenarios requiring long-range emergency stopping capabilities along linear machine hazards. Its quintessential application is protecting extensive conveyor systems found in material handling, baggage handling, mining, and bulk goods processing, where personnel must be able to halt operations immediately from any point along the belt. It is equally vital in large press lines, automated paint shops, or assembly lines spanning significant floor space. The system ensures that workers are never more than a few steps away from a readily accessible E-stop trigger point. Furthermore, it is suitable for guarding hazardous zones around large machines, robotic workcells with extended perimeters, or automated storage and retrieval systems (AS/RS) where traditional fixed E-stop buttons are insufficient for coverage. The rope pull design provides a critical layer of safety in environments where rapid intervention is necessary to prevent injury or catastrophic damage.

​4. Product Advantages and Functional Benefits

​
This rope-operated E-stop system offers compelling advantages over discrete E-stop pushbuttons. Its primary benefit is providing ​continuous accessibility​ along an entire hazard length, drastically improving operator reaction time and coverage, leading to enhanced personnel safety. The modular design with separate control box (x1x) and tensioner (x3x) allows for ​flexible installation​ and ​centralized monitoring​ of the entire rope run via the control unit. The inclusion of the rope condition signal (x3x) provides valuable ​diagnostic capability, indicating whether the rope is correctly tensioned (taut) or slack/broken/pulled, enabling proactive maintenance and fault detection – a significant benefit for plant uptime and safety reliability. The ​high mechanical strength​ and ​corrosion-resistant​ construction ensure reliable operation in demanding environments. Compliance with ​stringent international safety standards​ (IEC/EN 60947-5-1, IEC 62061, ISO 13849-1) guarantees that it meets rigorous requirements for emergency stop devices, facilitating safety certification for machinery.

​5. Core Functionality and Safety Integration

​
The SHGV/L01 system functions through precise mechanical and electrical coordination. The stainless steel rope is anchored at both ends and kept taut by the spring-loaded x3x tensioner unit. Any pull or significant slackness caused by an operator pulling the rope or a break occurring causes the tensioner to displace. This displacement mechanically activates high-reliability, force-guided safety contacts within both the tensioner (generating the rope condition signal) and the connected SHGV/L01/x1x control box. The control box houses the primary safety relay contacts, typically employing dual-channel NC configurations with positive-break operation and direct opening action per safety standards. Immediately upon rope actuation or failure, these contacts positively open the safety circuit, sending a failsafe stop signal to the machine's Safety Controller or main PLC, demanding immediate and uncontrolled power removal from hazardous motions according to stop category 0. The system includes provisions for ​manual resetting​ only at the control box location after the emergency situation is resolved, ensuring controlled restart procedures. The dual-channel design enables diagnostic monitoring of contact welding or faults, satisfying requirements for higher Performance Levels (PL e) and Safety Integrity Levels (SIL 3) safety circuits.

Packaging & Shipping

Company Information
Xiamen ZhiCheng Automation Technology Co., Ltdit is a leading global supplier of control system components. We specialize in control systems and drives.

With many years of experience in the industrial sector, we consistently deliver the highest quality of spare parts.which make sure that all this jobs are

perfectly.

we are major in PLC,Sensors,HIM,Transmitters.

Best Supply Brands As Following:1)Bently nevada.2)+GF+.3)Rosemount.4)ABB.5)Allen-Bradley.6)Foxobro.Good working environment, perfect team, sincere cooperation →→ Achieve u and our success !!!