Why Choose the Finder 7S.14.9.024.4220T Force-Guided Safety Relay?
The Finder 7S.14.9.024.4220T is a professional 24 V DC force-guided safety relay module from the Finder 7S Series, designed for industrial automation, machinery safety circuits and safety-related control applications. Featuring a four-contact arrangement with 2 normally open (NO) and 2 normally closed (NC) contacts, this relay provides mechanically linked contact operation for applications requiring dependable switching and contact-state monitoring.
Based on the Finder 7S.14.9.024.4220 configuration, the relay combines a 6 A contact rating, 250 V AC switching capability and a 24 V DC coil with force-guided contact technology. Its positively guided contacts are designed to prevent normally open and normally closed contacts from being simultaneously closed under specified fault conditions, supporting diagnostic monitoring within correctly engineered safety-related control systems.
The module features spring-clamp terminals, DIN rail mounting and an integrated LED status indicator. Its compact 22.5 mm housing width supports installation in industrial control cabinets, while the operating temperature range of −40 to +70 °C makes it suitable for demanding industrial environments. The exact significance of the additional T suffix should be confirmed against Finder's ordering documentation before substitution for the standard 7S.14.9.024.4220 model.
Key Advantages
- Force-guided contact technology: Supports safety-related switching and contact-state monitoring.
- 24 V DC coil: Compatible with appropriately rated industrial control supplies.
- Four-contact arrangement: Provides 2 normally open and 2 normally closed contacts.
- 6 A contact rating: Suitable for compatible industrial control loads.
- 250 V AC switching capability: Supports a wide range of appropriately rated control circuits.
- Mechanically linked contacts: Facilitates fault detection when incorporated into suitable safety monitoring architectures.
- Spring-clamp terminals: Enable convenient, vibration-resistant electrical connections.
- Integrated LED indicator: Provides immediate visual indication of relay energisation.
- Compact DIN rail construction: Saves space in industrial automation cabinets.
- Low coil power consumption: Approximately 1 W for efficient control operation.
- Fast switching response: Suitable for control and monitoring applications requiring predictable relay operation.
- Wide operating temperature range: Supports use in demanding industrial environments.
- Silver tin oxide contacts: Provide robust switching characteristics for suitable electrical loads.
- Long mechanical service life: Designed for repeated switching operations.
- Finder 7S Series design: Provides a practical relay solution for safety-related industrial control systems.
Key Features
- Finder 7S Series force-guided relay module.
- Manufacturer reference: 7S.14.9.024.4220T.
- Standard configuration reference: 7S.14.9.024.4220.
- Nominal coil voltage: 24 V DC.
- Contact configuration: 2 NO + 2 NC.
- Total number of contacts: 4.
- Force-guided contact mechanism.
- Rated contact current: 6 A.
- Nominal AC switching voltage: 250 V AC.
- Contact material: silver tin oxide (AgSnO).
- Coil power consumption: approximately 1 W.
- Typical coil current: approximately 42.2 mA.
- Typical coil resistance: approximately 568.7 Ω.
- Typical operate time: 12 ms.
- Typical release time: 10 ms.
- Mechanical endurance: approximately 10 million operations.
- Electrical endurance: approximately 100,000 operations under specified test conditions.
- Integrated LED operating status indicator.
- Spring-clamp electrical terminals.
- Standard 35 mm DIN rail mounting.
- Housing width: approximately 22.5 mm.
- IP20 ingress protection.
- Operating temperature range: −40 to +70 °C.
- Suitable for use within properly designed safety-related control architectures.
Technical Specifications
- Manufacturer: Finder
- Series: 7S Series
- Product family: 7S.14
- Requested SKU: 7S.14.9.024.4220T
- Standard configuration reference: 7S.14.9.024.4220
- Product type: Force-guided safety relay module
- Nominal coil voltage: 24 V DC
- Coil power: 1 W
- Coil current: Approximately 42.2 mA
- Coil resistance: Approximately 568.7 Ω
- Minimum operate voltage: 16.8 V DC
- Maximum release voltage: 2.4 V DC
- Contact configuration: 2 NO + 2 NC
- Number of contacts: 4
- Contact technology: Force-guided contacts
- Contact material: Silver tin oxide (AgSnO)
- Rated contact current: 6 A
- Nominal switching voltage: 250 V AC
- Rated insulation voltage: 250 V
- Switching capacity: 1.5 kVA
- Typical operate time: 12 ms
- Typical release time: 10 ms
- Mechanical endurance: 10,000,000 operations
- Electrical endurance: 100,000 operations
- Terminal type: Spring-clamp / screwless
- Mounting: 35 mm DIN rail
- Housing width: 22.5 mm
- Housing height: 86.2 mm
- Housing depth: 100.3 mm
- Ingress protection: IP20
- Operating temperature: −40 to +70 °C
- Pollution degree: 2
- Status indication: Integrated LED
- Application: Safety-related industrial control and automation
- Installation environment: Protected electrical control enclosure
Reliable Force-Guided Switching for Safety-Related Control Systems
Safety-related industrial control systems depend on predictable switching behaviour and the ability to detect potentially dangerous faults. Conventional relays may not provide the contact relationship needed for reliable diagnostic monitoring. The Finder 7S.14.9.024.4220T uses the Finder 7S force-guided relay architecture, in which normally open and normally closed contacts are mechanically linked to support monitoring of contact operation.
In a force-guided contact arrangement, the mechanical construction is intended to prevent an NO and an NC contact from being closed simultaneously, including under specified contact-welding fault conditions. This characteristic enables external safety monitoring circuits to identify certain relay faults by checking the relationship between output contacts and feedback contacts.
The 2 NO + 2 NC contact configuration allows the relay to provide switched outputs alongside feedback contacts in appropriately designed control architectures. Its 24 V DC coil is suitable for common industrial control supplies, while the 6 A contact rating supports compatible switching applications. The integrated LED indicator provides a convenient local indication of coil energisation during commissioning and maintenance.
The relay's spring-clamp terminals simplify wiring and provide secure conductor retention in environments subject to mechanical vibration. Its compact DIN rail housing makes it suitable for integration into control panels containing PLCs, safety controllers, contactors and other automation components.
Important: A force-guided relay is not, by itself, a complete safety controller or a guarantee of a particular Performance Level or Safety Integrity Level. The achieved safety performance depends on the complete system architecture, diagnostic coverage, component ratings and validation. The exact T-suffix configuration should be checked before the relay is selected for a safety-critical installation.
Typical Applications
- Industrial machinery safety: Force-guided switching within properly designed machine safety circuits.
- Emergency-stop systems: Contact switching and feedback functions within suitable monitored architectures.
- Safety interlocking: Integration with compatible machine guard and interlock control systems.
- Industrial automation: Safety-related relay switching in automated production equipment.
- Hoists and cranes: Suitable control and monitoring applications.
- Lift and escalator systems: Force-guided contact applications in properly engineered control systems.
- Conveyor systems: Switching and monitoring of safety-related control circuits.
- Automated warehouses: Integration into suitable material-handling control systems.
- Wood-processing machinery: Relay switching for monitored machine control applications.
- Packaging machinery: Safety-related switching and feedback functions.
- Industrial process equipment: Reliable relay control and contact-state monitoring.
- Control panel manufacturing: DIN rail-mounted force-guided relay assemblies.
