This document describes the Koei Industry Co., Ltd. Unic Series Rotary Type Electric Actuator, an on/off and intermediate position service device designed for valve control. The manual emphasizes safety precautions, installation guidelines, operational procedures, and maintenance instructions to ensure long-term, safe, and efficient use.
Function Description
The Unic Series Electric Actuator is a quarter-turn rotary type device used to control valves by rotating an output shaft. It is suitable for both on/off operations, where the valve is fully opened or closed, and intermediate position services, allowing for partial valve openings. The actuator converts electrical energy into mechanical rotation to operate the valve, providing precise control over fluid flow.
Important Technical Specifications
The Unic Series offers several models, including Unic-Z, 05, Unic-10, Unic-20, 40, and Unic-60, 100, 150, 200, each with varying specifications.
General Features:
- Housing: NEMA 4X (to IP-66) water tightness, ensuring protection against dust, rain, splashing water, and hose-directed water.
- Body Material: Die-cast Aluminum with oxidation treatment and electrostatic coating for durability.
- Output Shaft Material: SUS 303.
- Mounting Angle: From vertical to horizontal angles.
- Position Detection: OPEN/CLOSE limit switches.
- Manual Operation: Crank handle attached for manual override.
- Stop Mechanism: Mechanical type (OPEN/CLOSE).
- Conduit Entrance: P1/2×1 with resin connector.
- Withstand Voltage: 1500V AC/1 minute.
- Insulation Resistance: 100MΩ/500DC.
- Ambient Temperature: -25°C to 55°C. An in-fit space heater is available as an option for minus temperatures.
- Fluid Temperature: Standard bracket and couplings support up to 65°C. Radiation type bracket and couplings are available for temperatures over 65°C.
Electrical Specifications:
- Rated Voltage: AC 100/110/115/120V±10% (50/60Hz) or AC 200/220/230/240V±10% (50/60Hz).
- Motor: E-class insulation.
- Unic-Z, 05: 8W
- Unic-10: 20W
- Unic-20: 30W
- Unic-40: 90W
- Unic-60: 90W
- Unic-100, 150, 200: 100W
- Rated Current (approximate values for 100V/200V):
- Unic-Z, 05: 0.75A/0.4A (100V/200V)
- Unic-10: 0.6A/0.3A (100V/200V)
- Unic-20: 1A/0.45A (100V/200V)
- Unic-40: 2A/0.9A (100V/200V)
- Unic-60: 2A/0.9A (100V/200V)
- Unic-100, 150, 200: 3.5A/1.7A (100V/200V)
- Operation Angle: 0~90°.
- Protector: Thermal protector to prevent motor burn-out.
Torque and Speed Specifications:
- Unic-Z: 9.8 N·m (1 kgf·m), 4 sec operation speed.
- Unic-05: 39 N·m (4 kgf·m), 15 sec operation speed.
- Unic-10: 98 N·m (10 kgf·m), 30 sec/50Hz operation speed.
- Unic-20: 196 N·m (20 kgf·m), 30 sec/50Hz operation speed.
- Unic-40: 392 N·m (40 kgf·m), 30 sec/50Hz operation speed.
- Unic-60: 588 N·m (60 kgf·m), 30 sec/50Hz operation speed.
- Unic-100: 981 N·m (100 kgf·m), 30 sec/50Hz operation speed.
- Unic-150: 1471 N·m (150 kgf·m), 45 sec/50Hz operation speed.
- Unic-200: 1962 N·m (200 kgf·m), 60 sec/50Hz operation speed.
Weight:
- Unic-Z, 05: 2kg
- Unic-10: 4.5kg
- Unic-20: 9kg
- Unic-40: 9.5kg
- Unic-60: 20kg
- Unic-100: 21kg
- Unic-150, 200: 22kg
Usage Features
The Unic Series actuators are designed for ease of use and reliability:
- Compact and Light Design: Facilitates installation and reduces structural load.
- Simple Structure: Minimizes potential for trouble and simplifies maintenance.
- Manual Operation: A crank handle allows for manual control of the valve, essential during power outages or for initial setup and testing.
- Thermal Protection: Integrated thermal protector prevents motor burn-out due to overheating.
- Simple Wiring: Features a terminal block for straightforward electrical connections.
- Limit Switches: Adjustable limit switches (LS1, LS2 for open/close) define the full open and full close positions of the valve. Additional contact outputs (LS3, LS4) are available for signaling.
- Intermediate Limit Switch (Option): Allows setting of intermediate valve positions for more granular control.
- Potentiometer (Option): Provides continuous position feedback (135, 500, 1000 Ω options) for precise monitoring and control.
- Mechanical Stop: Provides a physical stop for the valve's rotation, acting as a backup to the limit switches.
- Environmental Considerations: Designed for indoor and outdoor installation, with specific cautions against hazardous environments (non-explosion-proof) and direct sunlight (for outdoor use). Adequate space for manual maintenance is recommended.
Maintenance Features
The manual outlines key maintenance aspects to ensure the actuator's longevity and performance:
- Lubrication: Major parts are pre-lubricated with long-life di-sulfate molybdenum grease (MoS2) at the factory, generally eliminating the need for re-lubrication.
- Inspection:
- Before Restarting After Long Rest:
- Cut power off.
- Manually operate the valve to confirm smooth movement without eccentricity.
- Open the body cover to check for condensation and inspect wiring.
- Secure the cover after inspection to prevent water ingress.
- Troubleshooting Guide: A comprehensive table is provided to diagnose and resolve common issues, including:
- Motor Not Starting Up: Solutions include checking power supply, cables, terminal voltage, ambient temperature, valve movement, and replacing faulty limit switches, motors, or advancers (condensers).
- Lamp Not Lighting Up: Solutions involve replacing the lamp, renewing the limit switch, or re-adjusting the stop.
- Optional Extras: Available options like no-voltage extra limit switches, potentiometers, R/I converters (4-20 mA DC), torque limiters, speed controllers, and space heaters can enhance functionality and ease of maintenance. For special versions or specific needs, contact the Sales Department.
Safety Warnings:
- WARNING: Improper handling may cause injury or death. The product is not explosion-proof and should not be used in environments with flammable or corrosive gases. Do not dismantle the actuator from the valve during power operation or perform wiring when power is supplied.
- CAUTION: Improper handling may cause injury or material loss. Avoid dropping the product, giving it shocks, getting on it, or performing wiring in rain or splashing water. Always ensure power is off before manual operation, as the handle may suddenly return if power is on. Do not operate multiple actuators in parallel with a single open-close switch, as this can lead to abnormal current, chattering, and potential damage.
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