Key Features
✓ 50Nm Output Torque
✓ 12 Second Operation
✓ Power Failure Failsafe
✓ 24VAC/DC or 95-265VAC
✓ ISO5211 F07 Direct Mount
✓ 14mm Female Drive
✓ Open & Closed Feedback
✓ Anti-Condensation Heater
✓ OLED Status Display
✓ Manual Override
✓ IP67 Weather Protection
✓ 20,000 Cycle Design Life
Datasheets
Description
CNX50S 50Nm Smart Failsafe Electric Valve Actuator
The Connexion CNX50S Smart Series is a powerful 50Nm quarter-turn electric actuator designed for automated ball valves, butterfly valves and other compatible ISO 5211 quarter-turn valves.
Featuring approximately 12-second 90° operation, the CNX50S combines standard open/close valve control with power-failure failsafe operation, open and closed position feedback, OLED status display, manual override and an internal anti-condensation heater.
Available in either 24VAC/DC or wide-range 95–265VAC, making the actuator suitable for industrial automation, water control, building services and remote valve isolation systems.
Smart Failsafe Operation
The CNX50S incorporates an internal energy-storage system that allows the actuator to drive the connected valve to its predetermined failsafe position following loss of electrical power.
This provides automatic valve operation without requiring a separate external battery backup system.
Failsafe Open configuration is available for applications where the valve must automatically open following loss of electrical power.
After a failsafe operation, approximately 1.5–2 minutes of restored power is required to recharge the internal capacitors before another failsafe operation is available.
Electrical Options
CNX50S-24V-OC-FAILSAFE
Voltage: 24VAC/DC
Function: Open/Close + Failsafe
Torque: 50Nm
Drive: 14mm
Heater: Included
CNX50S-95-265VAC-OC-FAILSAFE
Voltage: 95–265VAC
Function: Open/Close + Failsafe
Torque: 50Nm
Drive: 14mm
Heater: Included
The wide-range mains version is particularly useful for OEM and replacement applications because a single actuator can accommodate supplies between 95 and 265VAC.
Mechanical Specification
Torque: 50Nm
Rotation: 90° ±2°
Operating time: Approx. 12 seconds
Mounting: ISO 5211 F07
Female drive: 14mm
Manual override: Yes
Position indicator: Visual open/closed
Enclosure: IP67
Operating mode: S3-75%
Design cycle life: 20,000 operations
F05/F07 mounting.
Open & Closed Position Feedback
Independent volt-free feedback switches provide confirmation when the actuator reaches the fully open or fully closed position.
This allows valve status to be monitored remotely by:
✓ Building management systems
✓ PLC control systems
✓ Control panels
✓ Pump control systems
✓ Process automation equipment
The actuator provides separate open and closed feedback connections within its control wiring.
Anti-Condensation Heater
An integrated anti-condensation heater helps prevent moisture forming inside the actuator enclosure as environmental temperatures change.
This is particularly useful for installations in plant rooms, water treatment facilities and industrial environments subject to changing temperature or humidity.
Manual Override
A manual override allows the connected valve to be repositioned manually when electrical power is unavailable.
This provides a useful commissioning, maintenance and emergency operating facility.
ISO 5211 Direct Mount
The CNX50S is designed for direct mounting onto compatible ISO 5211 quarter-turn valves.
Mounting interface: F07
Drive: 14mm female
Rotation: 90°
It is particularly suitable for larger ball valves and butterfly valves requiring a substantial operating torque reserve.
Suitable Valve Types
✓ Brass ball valves
✓ Stainless steel ball valves
✓ WRAS ball valves
✓ Butterfly valves
✓ 2-way isolation valves
✓ 3-way ball valves
✓ ISO 5211 quarter-turn valves
For reliable operation, the actuator should always be selected with an appropriate torque safety factor above the valve's maximum operating torque.
Typical Applications
✓ Automatic water isolation
✓ Building management systems
✓ Process control systems
✓ Pump and tank control
✓ Water treatment equipment
✓ Industrial automation
✓ Remote valve operation
✓ Power failure safety systems
✓ OEM machinery
✓ Plant room automation
Important Failsafe Information
The failsafe function depends upon stored electrical energy within the actuator.
Following a power-failure operation, allow approximately 1.5–2 minutes after the electrical supply is restored for the energy-storage capacitors to recharge fully before relying upon another failsafe cycle.
Technical Specification
Brand: Connexion
Model: CNX50S
Width: 111.00 mm
Height: 121.00 mm
Depth: 132.00 mm
Weight: 1.80 kg
Valve / Product Type: Motor Actuated Valves
Voltage: 24vDC, 24vAC, 110vAC, 230VAC
Function: 2/2 Failsafe Closed, 2/2 Failsafe Open, Power Open/Power Close
Operation: Direct Acting
Approvals:: IP65, IP66
Options required: Manual Override, Position Feedback Closed, Position Feedback Open+Closed, Position indication Visual
Found in these Categories
50NM Smart Motor Actuator 90° Open/Close + Failsafe IP67
£450.51 incl. VAT £375.43 ex. VAT
-35% Was £693.10 incl. VAT