OMK-Ex60E Explosion-Proof Modulating Electric Actuator

Performance Parameter Type

OMK-Ex20

OMK-Ex30

OMK-Ex40

OMK-Ex60

DC24V

AC110V

AC220V

AC380V

DC24V

AC110V

AC220V

AC380V

DC24V

AC110V

AC220V

AC380V

DC24V

AC110V

AC220V

AC380V

Motor Power

35W

40W

40W

30W

50W

40W

40W

30W

70W

90W

90W

40W

70W

90W

90W

40W

Rated Current

3.57A

0.65A

0.37A

0.15A

4.62A

0.65A

0.37A

0.15A

5.13A

1.12A

0.57A

0.29A

5.13A

1.18A

0.60A

0.29A

Standard Time/Torque

25S/200NM

30S/300NM

30S/400NM

45S/600NM

Optional Time / Torque

15S/100NM

6S/80NM

15S/200NM

60S/400NM

Turning Angle

0~90° Adjustable

Total Weight (kg)

10.0Kg

10.0Kg

10.5Kg

10.5Kg

Cold Insulation Resistance(MΩ)

AC

Brand: Omkee (Wuhan Omkee)

Product Category: Explosion-Proof Valve Automation / Quarter-Turn Intelligent Modulating Electric Actuator

Compliance Standards: CE / ISO9001:2008 / ExdIIBT4 Gb / IP68

Product Overview

The OMK-Ex60E represents the flagship intelligent modulating and proportional regulation configuration within the premium OMK series of explosion-proof quarter-turn electric actuators. This model is engineered explicitly for advanced closed-loop industrial process automation that requires highly precise throttling and dynamic positional control via external analog command signals. Driven by a fully integrated, state-of-the-art servo controller with live digital diagnostics and featuring a dual cable entry interface, the OMK-Ex60E offers a ruggedized, zero-oscillation solution for modern process loops in hazardous environments.

Advanced Intelligent Servo Controller Features

The built-in intelligent servo controller of the OMK-Ex60E is uniquely engineered to provide industry-leading control stability, high immunity to interference, and precise positioning:

1. On-Site Digital Display: Features an integrated numerical screen that displays real-time valve stroke percentage (0-100% open scale) and diagnostic fault codes for rapid troubleshooting.

2. Manual / Auto Operation: Supports immediate manual/automatic switching on-site, allowing users to perform local motorized push-button calibration and configuration operations.

3. High-Speed CPU Components: Powered by an imported high-speed processing unit utilizing custom digital-analog hybrid circuitry and a structured parameter menu for effortless setup.

4. Solid-State Thyristor (SCR) Control: Replaces conventional mechanical relays with high-power thyristor outputs. This minimizes time lag, eliminates contact sparking, and permits an ultra-high operating frequency of up to 1200 actions per hour.

5. Electronic Braking & Zero Oscillation: Integrates a proprietary electronic brake design that instantly counters motor rotational inertia. It hits targets precisely in a single positioning move (0 hunting/oscillation), achieving a positioning accuracy of $\ge 0.5\%$.

6. Optoelectronic Isolation & Wide Power Design: All input and output signal paths are fully opto-isolated. Supported by a wide power input structure, it maintains immense anti-interference capability, allowing seamless interfacing with PLC, DCS, and computer systems.

7. Full Board Resin Encapsulation: The entire internal controller board is heavily resin-potted and sealed, guarding it against severe field vibration, dust infiltration, ambient heat drift, and high humidity, ensuring long-term operational stability.

Premium Mechanical & Component Features

1. High-Precision Anti-Backlash Position Sampling

• Driven by a genuine Japanese "SAKAE" conductive plastic potentiometer coupled to a specialized spring-loaded anti-backlash gear assembly. This combination entirely eliminates gear clearance, minimizes mechanical hysteresis, and delivers consistent real-time sampling for maximum control accuracy.

2. Robust Industrial Enclosure

• Material: Premium ADC12 die-cast aluminum alloy for lightweight yet heavy-duty structural integrity.

• Surface Treatment: Subjected to an exhaustive post-casting process including aging treatment, shot blasting, chemical impregnation, and surface oxidation.

• Coating: Finished with high-grade AkzoNobel powder coating (thickness $>0.2\text{ mm}$), delivering exceptional anti-corrosion properties and thermal resistance exceeding 150°C without degradation.

3. High-Torque Worm & Output Shaft Transmission

• Worm Gear: Forged from mathematically proportioned aluminum bronze alloy blanks and precision machined to microscopic tolerances.

• Output Shaft & Worm: Crafted from high-tensile 40Cr alloy steel, subjected to advanced heat treatment for superior toughness, and finished with a black oxide treatment for rust prevention.

• Connection Type: The output shaft and worm gear utilize a highly secure spline connection, completely resolving the shaft twisting and snapping failures common in single-piece machined designs under heavy load stresses.

4. Precision Quenched Reduction Gearbox

• All gear stages within the reduction box are precision-cut from premium quenched and tempered steel, delivering high precision, exceptional structural strength, ultra-low acoustic profile, high fatigue limits, and superior wear resistance.

• Both ends of the reduction gears are supported and aligned by precision deep groove ball bearings to dampen noise and absorb long-term heavy load shocks. The gearbox frame is cast from rugged ADC12 alloy for smooth power transmission.

5. High-Frequency Modulating Motor

• Engineered explicitly to handle complex field conditions and high-frequency start-stop regulations. All motors are designed to deliver 1.3 to 1.5 times the rated torque requirement.

• Key parameters—such as temperature rise, rotational inertia, and voltage insulation limits—are uniquely optimized and verified through rigorous stress testing to guarantee continuous performance under peak load or over-load cycling.

6. High-Precision Bearings & Professional Seals

• Bearings: All bearings conform strictly to the EMQ (ZV2) low-noise, low-vibration standard, satisfying the P6 precision class through extra-fine raceway polishing, optimized ball roundness, and structured cage alignment.

• Seals & O-Rings: Fully equipped with imported genuine German "Obers" dual-lip TC skeleton oil seals and premium gaskets.

• Lubrication: Pre-packed with high-performance imported Mobil grease for lifetime smooth operation.

7. Proprietary Stroke Adjustment Device

• Features an in-house developed, proprietary travel control mechanism. Through a top-accessible "Adjustment Shaft", plant operators can easily calibrate the travel limit switches, making on-site commissioning significantly simpler and more exact.

Rigorous Engineering, Manufacturing & Quality Testing

Every OMK series actuator is designed by engineers with over 10 years of professional expertise. Utilizing advanced UG 3D modeling and simulation software, potential design failure modes are solved prior to mold production. Machining is handled by imported high-precision 4-axis CNC machining centers equipped with quick-loading pneumatic clamping fixtures. Final dimensions are thoroughly audited via a 3D Coordinate Measuring Machine (CMM).

Before leaving the factory, 100% of the products must complete five strict inspection tests:

1. Torque Verification Test: Every unit is tested under rated and negative voltage configurations to guarantee a full 1.3x torque margin capability.

2. High-Voltage Dielectric Test: