ELECTRIC ACTUATORS
ELECTRIC ACTUATORS
Alternative for Sizes
Up to 4 in (100 mm) Stroke:
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 Series Download
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
Viper Quarter Turn Torque
Please contact BLAC INC. for sizing details.
Viper 100 Series
BLAC INC. Viper 100 Series Electric Actuators are engineered for precise valve control in process and oil & gas operations. Viper actuators have zero emissions, require minimal maintenance and deliver proven long-term reliable performance.
Viper applies the BLAC INC. patented hydraulic actuator cylinder rod seal to prevent contamination of the drive cylinder internals.
The Viper 100 Series uses absolute feedback positioning that enables the actuator to continuously maintain the commanded valve position. It incorporates a roller screw drive with servo design.
Viper 100 Series Download
