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1. Product Overview & Description
The Euchner CES-AP-CO1-CH-SA is a robust and versatile safety switch designed for reliable access guarding in industrial automation environments. Part of the proven CES-A series, this model features a compact plastic housing (denoted by 'CH') offering good chemical resistance and electrical insulation properties. The 'AP' signifies an Actuator Plate design, meaning it utilizes a spring-loaded plunger mechanism activated by a separate flat actuator plate mounted on the movable guard (e.g., door or gate). Its primary function is to monitor the position of safety guards, ensuring that hazardous machine motion or energy sources are only active when the guard is securely closed and latched. The 'CO1' indicates a specific contact configuration, typically a single-channel Normally Open (NO) contact block, suitable for integration into safety circuits requiring position feedback. The 'SA' suffix often refers to a standard actuator type or mounting style. This switch provides a dependable, cost-effective solution for achieving essential safety interlocking on machinery.
2. Key Technical Parameters & Specifications
Critical specifications define the CES-AP-CO1-CH-SA's operational capabilities and safety performance. It typically achieves Performance Level c (PL c) according to ISO 13849-1 and may be suitable for Safety Integrity Level 1 (SIL 1) applications per IEC 62061 when used appropriately within a validated safety circuit. The plastic housing ('CH') provides a high degree of protection against dust and water ingress, commonly rated IP65, making it resistant to low-pressure water jets and dust. Electrical specifications include contact ratings suitable for standard control circuits, often rated for voltages like 24V DC/230V AC and currents sufficient for PLC inputs or safety relay coils (e.g., 4A). The operating temperature range is typically substantial, such as -25°C to +70°C (-13°F to +158°F). Key mechanical parameters include the actuator engagement depth (often adjustable or standardized), the required force to depress the plunger, and the positive overtravel ensuring reliable contact operation even under vibration. Connection is usually via screw terminals.
3. Primary Applications & Intended Use
The CES-AP-CO1-CH-SA safety switch finds widespread use in applications requiring dependable guard position monitoring to prevent access to hazardous machine zones during operation. Its typical applications include securing hinged or sliding access doors on machinery such as conveyors, smaller presses, packaging equipment, material handling systems, assembly stations, and automated process lines. It ensures that dangerous machine functions are inhibited or stopped when the guard is opened. The plastic housing makes it particularly suitable for environments where corrosion resistance is beneficial or where lighter weight is preferred, such as in food processing areas (subject to washdown, though IP65 rating must be verified for specific cleaning procedures), light manufacturing, electronics assembly, and cleanrooms. It provides a fundamental level of safety interlocking, often used in less critical applications or as part of a larger safety system where the required risk reduction is met by PL c.
4. Distinct Advantages & Product Benefits
The CES-AP-CO1-CH-SA offers several key advantages for industrial safety applications. Its plastic housing ('CH') provides inherent corrosion resistance, making it suitable for environments where metal switches might degrade, and offers excellent electrical insulation properties. The design is generally cost-effective, providing essential safety functionality at a competitive price point. The spring-loaded plunger mechanism ensures positive operation and reliable contact switching upon actuator engagement or release. The compact size facilitates installation in space-limited areas. The IP65 rating enhances reliability by protecting internal components from dust and water splashes common in industrial settings. Euchner's reputation for quality ensures dependable performance and longevity. Furthermore, its standardized design and widespread use often mean easier sourcing of replacements or spares, contributing to reduced maintenance complexity and downtime. It provides a straightforward, proven solution for achieving necessary safety compliance on many types of industrial equipment.
5. Core Functionality & Operational Principle
The fundamental operation of the CES-AP-CO1-CH-SA revolves around its spring-loaded plunger interacting with an actuator plate. When the guard door is closed, the separate actuator plate (mounted on the door) presses against the switch's plunger, overcoming the spring force and driving it inward. This physical movement actuates the internal switching mechanism ('CO1'), changing the state of the electrical contacts. Typically, for an NO configuration ('CO1'), this action closes the contact, signaling to the machine's safety control system that the guard is securely closed, allowing machine operation to commence or continue. Crucially, when the guard door is opened, the actuator plate moves away, allowing the internal spring to forcibly return the plunger to its extended position. This spring return action positively opens the NO contact, immediately interrupting the safety circuit and sending a stop signal to halt hazardous machine motion or de-energize dangerous equipment. This positive mode operation ensures safety even in the event of spring failure (fails open).
Property | Value |
---|---|
Product Type | Modular Safety Controller with I/O & Communication |
Model Code | CES-AP-CO1-CH-SA |
Series | CES-AP (Advanced Programmable Safety System) |
Safety Standards | ISO 13849-1, IEC 62061, EN 60204-1, IEC 61508 |
Safety Level | PL e (ISO 13849-1), SIL 3 (IEC 61508/62061) |
Input Channels | 6 (Configurable: dual-channel safety inputs, e.g., E-stop, door sensors) |
Output Channels | 4 OSSD (Output Signal Switching Device) outputs (semiconductor, 24V DC) |
Communication Interface | Profinet/ProfiSafe (via CH slot) + RS-232 (diagnostics) |
Terminal Type | Spring-clamp terminals (SA designation) |
Operating Voltage | 24 V DC (±15%) |
Current Consumption | 120 mA (typical) |
Output Current Capacity | 0.5 A per OSSD channel (short-circuit protected) |
Response Time | ≤ 15 ms (input to output) |
Program Memory | 512 KB (for safety logic) |
Diagnostics | LED per channel (status/fault), event logging via software |
Protection Rating | IP20 (requires enclosure for higher protection) |
Operating Temperature | 0°C to +55°C |
Housing Material | Polycarbonate (PC) |
Mounting | DIN rail (35 mm) |
Dimensions (W×H×D) | 110 × 100 × 75 mm |
Weight | 380 g |
Configuration Software | Euchner Safety ES (IEC 61131-3 compliant) |
Safety Functions | Configurable: muting, restart interlock, edge monitoring, time delays |
Certifications | CE, UL, TÜV Nord, RoHS |
Compatibility | Euchner CES-AI input modules, CES-AC expansion controllers |
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.
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