QT-50 Quarter Turn Marine Electric Valve Actuator

Featured Specifications

  • Compact Footprint
  • Low Power Consumption
  • Versatile Communication Protocols
  • 50NM of Instant Torque
  • Inexpensive and Maintenance Free
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QT50_Small_Actuator

Description

QT50 is the most compact quarter-turn actuator.. With an operating torque of 50 Nm, the QT50 is ideal for use with butterfly and ball valves from DN25 to DN80. IP68 protection rating and maritime type approval ensures robustness and durability. The QT50 is designed in line with Eltorque`s Lifelong Intelligent Control philosophy, meaning a maintenance free product with improved functionality and real-time feedback.

NAG electric valve actuators are designed to be maintenance free, and feature completely enclosed, permanently lubricated transmissions to ensure extended reliable service in the harshest operating conditions.

Technical Specifications

Technical Data 

Torque*  10-50 Nm
Valve Stem Connector Valve Spindle Adaptor SQ11
Valve Applications Butterfly and Ball Valves with partial turn operation
Valve Flange F04, F05, F07. According to ISO5211
Min-Max Closing Time 0-100% / 0-90° / Min: 5 sec. / Min Recommended: 8 sec. / Max: 15 sec

 

*Configurable using Eltorque Manager download free at: www.eltorque.no/downloads

 

Mechanical

Dimensions (H,W,D)

6.42, 4.6, 6.45 in (163, 118, 164 mm) 
Weight  9.92 lbs (4.5 kg) 
Housing  IP68 (continous submersion, 32ft/10m - 72hr)
Corrosion resistant aluminum housing 
Operating Temperature -13° to 158°F (-25° to +70°C) 
Over Temp. Protection  Current controlled 
Under Temp. Protection Stator coils used as heating element 
Finish  Black

 

 

Electrical

Supply Voltage 
  • 110-240 V AC/DC (50/60 Hz)
Power Consumption

Max: 60VA

Standby: 25W

 

Cables & Cable Glands 

  • Up to four (4) M20 cable glands allow for serial connection of power supply and fieldbus wiring
  • Actuator housing includes threaded mounting holes
  • Use IP68 glands for all wires to maintain IP rating
  • Optimized for fieldbus installation (refer to installation manual for specific requirements)
  • Circular MIL connectors for power/control/configuration

 

​Control 

Interface Options

Digital: 2x digital input (Open & Close)
            3x digital output (Open, Closed & Alarm)

Analog: analog input (set position) analog output (feedback position) digital output (open, closed & alarm)
CANopen Fieldbus: Max. 127 nodes/network, allows positioning and other extended controls. 
                                 *Number of Nodes will be limited by control system
Network Valve-Position Sensor
 

Absolute position sensor; provides correct feedback even after power failure. 
 
Resolution

0.39% / 0.35° & 360° range 

Configuration /
Set-Up 

USB connection to PC with Eltorque Manager v.3
Configurable
Parameters 
  • Open & Closed Postions 
  • Speed, torque, valve postion, valve seat region postion.
  • Inverted I/O or fieldbus parameters depending on control interface.  

 

Emergency & Safety 

Manual Operation 

Standard fixed hand wheel, mechanical valve-position indicator
Apprx. Number of Turns 
Closed - Open 
19: 0-100% / 0-90° 

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