V I P E R ™ S E R I E S
 ELECTRIC ACTUATORS
V I P E R ™ S E R I E S
 ELECTRIC ACTUATORS
VFD Controlled Advantages Download
Features Data Sheet Linear Thrust Quarter Turn Torque
Handwheel Limit Switches Feedback
 

VFD Controlled Electric Actuators

BLAC INC. Viper Series Electric Actuators are designed for both modulating and on-off applications.

Viper actuators utilize a VFD controlled bi-directional motor to operate a linear output cylinder drive with zero backlash when changing directions.

Viper applies the BLAC INC. patented hydraulic actuator cylinder rod seal to prevent contamination of the drive cylinder internals. The VFD controller uses position feedback to indicate the controlled position while continuously maintaining the valve command position.

 

Viper Download

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Viper Electric Actuator

 

Viper Advantages

VFD Over Servo Drives

  • Cost-Effective Control: Lower cost than servo driven electric systems.

  • Application-Level Precision: Delivers precise control for most applications.

  • Simplified Integration: Directly controls the voltage and frequency supplied to the motor.

Electric Over Hydraulics/Pneumatics

  • Reduced Maintenance: Induction motor does not have the maintenance requirements of hydraulics or pneumatics.

  • Demand-Based Power: Reduced energy consumption.

  • Compact Design: Rugged, closed system.

 

Viper Features

  • Precise modulating control using VFD

  • Positioning control, accuracy, linearity and repeatability of <0.1% stroke under a varying load

  • All-electric actuator without gears

  • Linear rising stem and quarter turn actuators

  • Fail in position with zero drift

  • Fail to end of stroke position by spring or by UPS supplied system

  • On-Off applications

  • Can be wired to replace MOV applications

  • All worldwide electrical hazardous area classification

  • Corrosion free construction materials of stainless steel and anodized aluminum

  • Mounts in place of a pneumatic or hydraulic cylinder

  • Performs equivalent to electro-hydraulic actuators

 
 

Viper Linear Rising Stem

 

Viper Accessories

Available accessories include handwheel, limit switches, and external feedback devices designed for any hazardous area classification.

Shown is a Viper for FCC slide valve service.

Viper including handwheel, limit switches,
and feedback devices

 

Viper Data Sheet

Item Viper Details
Command Signals 4-20 mA, On-Off Digital
Feedback Signals 4-20 mA
Normal Thrust 2000 lbf (8896 N) to 80,000 lbf (355,680 N)
Normal Torque 3000 lb-in (339 N-m) to 750,000 lb-in (84,765 N-m)
Stroking Speed Contact us to discuss application needs
Hysteresis/Linearity/
Repeatability		 0.1% of span (under load)
Sensitivity/Dead Band 0.1% of span (under load)
Ambient Conditions -40 to 130°F (-40 to 54°C)
Area Electrical
Classification		 IECEx, ATEX and NEC
Actuator Travel 1 1/2 to 48 in. (38 to 1,220 mm)
Motor Voltage Primary 220-600 VAC, 3 Phase
Motor Voltage Option 115/230 VAC, 1 Phase
Instrument Power 24 VDC or 110/220 VAC, 1 Phase
Item Viper Details
Command Signals 4-20 mA,
On-Off Digital
Feedback Signals 4-20 mA
Normal Thrust 2000 lbf (8896 N)
to 80,000 lbf
(355,680 N)
Normal Torque 3000 lb-in (339 N-m)
to 750,000 lb-in
(84,765 N-m)
Stroking Speed Contact us
to discuss application needs
Hysteresis/Linearity/
Repeatability		 0.1% of span
(under load)
Sensitivity/Dead Band 0.1% of span
(under load)
Ambient Conditions -40 to 130°F
(-40 to 54°C)
Area Electrical
Classification		 IECEx, ATEX and NEC
Actuator Travel 1 1/2 to 48 in.
(38 to 1,220 mm)
Motor Voltage Primary 220-600 VAC,
3 Phase
Motor Voltage Option 115/230 VAC,
1 Phase
Instrument Power 24 VDC or
110/220 VAC,
1 Phase
 

Viper Linear Thrust

Please contact BLAC INC. for sizing details.

 

Viper Electric Actuator - Linear Application

Viper Quarter Turn Torque

Please contact BLAC INC. for sizing details.