Finder 7S.14.9.024.0220 Forced Guided Contact Safety Relay Module

Segment	Code	Meaning
Series Code	7S	Finder 7S series forced guided contact safety relay module, compliant with EN 50205:2002 Type A
Contact Configuration	14	4-pole, 2 Normally Open + 2 Normally Closed contacts
Mounting & Terminal	9	DIN rail mounting, cage-clamp terminal, 22.5mm width
Coil Voltage	24	24V DC control coil
Version & Feature	220	Standard version without extra functions

Category	Parameter	Remarks
Basic Info
Manufacturer	Finder	Famous Italian relay brand
Product Type	Forced guided contact safety relay module	Non-latching type
Order Number	7S.14.9.024.0220 / 7S1490240220	Two formats are both applicable
Electrical Parameters
Coil Voltage	24V DC	Standard industrial control voltage
Coil Power Consumption	1.2W	Typical value
Contact Arrangement	2NO+2NC (4P)	Forced guided design for synchronous contact operation
Rated Current	6A @ 250V AC (AC-1)	Rated value for different load types
	6A @ 30V DC (DC-1)
	3A @ 230V AC (AC-15)
Contact Material	AgNi Silver Nickel Alloy	High conductivity and wear resistance
Mechanical & Environmental Parameters
Installation Type	DIN Rail (EN 60715)	22.5mm compact width
Terminal Type	Cage-clamp	Screwless wiring, easy installation
Protection Grade	IP20	Finger-proof, suitable for cabinet interior
Operating Temperature	-40°C ~ +70°C	Wide temperature range for industrial use
Storage Temperature	-40°C ~ +85°C
Certification	EN 50205:2002 Type A, EN 13849-1	International safety relay standards
Service Life	Mechanical: 10⁷ operations
Service Life	Electrical: 10⁵ operations at rated load

Brand	Model	Similarities	Differences
Pilz	PNOZ X2.8P 24VDC	2NO+2NC, 24VDC, forced guided contact	Professional safety relay, higher price and richer functions
Siemens	3TK2825-1BB40	2NO+2NC, 24VDC, DIN rail mount	Better compatibility in industrial automation
Schneider	Zelio SR2B121BD	2NO+2NC, 24VDC, forced guided contact	Different terminal design, cost-effective
Omron	G9SA-321-T075	2NO+2NC, 24VDC, safety certified	Compact size, ideal for limited space

5.1 Common Fault Analysis

Fault Phenomenon	Possible Causes	Inspection Steps
Coil fails to pull in	1. Insufficient or reversed coil voltage	1. Measure coil voltage to confirm 24V DC
	2. Burnt coil	2. Test coil resistance (normal: approx 480Ω)
	3. Loose wiring	3. Check terminal tightness
No contact movement	1. Jammed forced guided mechanism	1. Check mechanical flexibility after power off
	2. Oxidized or burnt contacts	2. Inspect contact surface damage
	3. Mechanical wear	3. Verify contact travel distance
Contact sticking	1. Arc burn caused by overload or short circuit	1. Check actual load exceeding rating
Contact sticking	2. Contact material fatigue	2. Replace relay module
LED indicator off	1. Damaged LED	1. Check power supply connection
	2. Power disconnection	2. Replace with identical module for test
	3. Internal circuit failure

5.2 Maintenance & Replacement Suggestion

Safety Priority: Cut off power and wait at least 5 minutes for capacitor discharge before maintenance.
Modular Structure: On-site repair is not recommended; integral replacement is preferred.
Replacement Procedure

Record wiring positions by photos or sketches

Remove old module from DIN rail

Install new module and reconnect wires accordingly

Power on and verify normal operation

Inspect terminal connection every 6 months

Avoid overload, reserve 30% current margin

Shorten replacement cycle to 2-3 years under harsh conditions

6.1 Applicable Fields

Industry	Typical Application	Safety Function
Machinery Manufacturing	Emergency stop circuit, safety door monitoring	Prevent accidental startup, protect operators
Automatic Production Line	Safety light curtain, two-hand control circuit	Secure operating area safety
Elevator & Escalator	Door lock monitoring, safety loop	Avoid unexpected elevator movement
Rail Transit	Door control, braking system	Comply with railway safety standards
Packaging Machinery	Guardrail monitoring, emergency stop	Personnel injury prevention

6.2 Inadmissible Working Conditions

High vibration environment such as stamping machines, shockproof bracket required

Humid and dusty environment, IP54+ sealed enclosure needed

Ultra-high frequent switching over 10 cycles per minute, solid state relay recommended

High current load over 6A / 250V AC, contactor required for capacity expansion

6.3 Selection Tips & Avoidance Notes

Distinguish forced guided contact from ordinary relay; EN 50205 compliant type mandatory for safety application
Confirm coil voltage, avoid AC and DC confusion; this model is 24V DC
Match load type with corresponding rated current (AC-1/AC-15/DC-1)
Reserve enough installation space for 22.5mm width module
Ensure compliance with EN 13849-1 for industrial safety usage

Application Scenarios of Finder 7S.14.9.024.0220

Equipped with forced guided safety contacts, conforming to EN13849 and EN50205 safety standards, applied for equipment safety loop control.

General Industrial Machinery
Machine tools: Emergency stop circuit, safety door interlock, tool magazine safety lock
Stamping & forging machines: Guard fence detection, slide safety limit
Injection molding machines: Mold safety door, manipulator area protection interlock
Automatic Production Line
Conveyor line: Light curtain safety protection, station access judgment
Assembly equipment: Two-hand startup circuit, robot fence access control
Sorting & packaging machines: Flip cover protection, fault emergency stop interlock
Lifting & Hoisting Equipment
Small lift, cargo elevator door control safety circuit
Crane lifting tool limit protection, power-off safety lock
Light Industry & Special Machinery
Safety stop interlock for printing and textile machinery
Safety door monitoring for wood cutting equipment
Fault power-off protection for fans and water pumps
Transportation & Building Auxiliary
Automatic door and escalator safety detection circuit
Vehicle industrial control, miniature railway equipment safety protection
Control Cabinet Internal Control
System emergency power-off safety loop
High voltage cabinet access control and leakage safety interlock