The IZQ+BW actuator is based on the IZQ multi-turn actuator with a secondary reduction stage, enabling 90° opening and closing of large-diameter, high-torque butterfly valves, ball valves, etc., with a torque range of 1000Nm~63000Nm

1. Robust structure, double sealing, effectively waterproof and dustproof during on-site wiring (IP67/IP68-2m, 48 hours).

2. Three-phase, single-phase, and DC power actuators

3. Built-in data logger as a standard function.

4. Compatible with IrDATM standard, allowing local and remote analysis of the actuator via insightpc software.

5. Simple, easy-to-control and indicate functions.

6. Multilingual text display showing status and settings

7. Simple torque and position control, enhanced reliability.

8. Comprehensive control and indication flexibility

9. Waterproof or explosion-proof specifications are available

Convenient Debugging:

The IZQ can be adjusted simply, safely, and quickly using a non-invasive infrared setting tool. Using the "plug-and-play" IZQ setting tool professional version, you can access and adjust the actuator settings, such as torque value, limit, control, and display functions. The unique intrinsically safe setting tool allows for non-invasive setting of the actuator in any environment, regardless of whether the power supply is available or not.

Simple Troubleshooting:

A large-scale digital position display allows for remote real-time display of the valve position. In addition, the easy-to-read, backlit display provides valve operating status, control and actuator status, and fault information. It allows users to understand the current operating status of the actuator. Using the Ql setting tool professional version, you can access the relative position torque distribution and actuator configuration during debugging, adjustment, or local valve monitoring. The built-in data logger records operation, alarms, and valve torque distribution data, providing valuable information on operating status and operating conditions.

IZQ Actuator Display Features:

Actuator Display

The IZQ includes an LCD dot matrix display specifically designed for actuator display. The actuator operates normally under normal operating temperature conditions, and the large screen with backlight allows users to clearly see the valve position indication information under various lighting conditions.

The display shows in real time the instructions from the central control room, the valve position, the operating status of the actuator, and the torque and alarm messages during the operation. Using the setting tool, the display can be changed from position mode to setting mode, making it easy for users to view, adjust, and change the actuator parameter settings.

The display unit also provides six LED indicators to indicate forward rotation, reverse rotation, ESD, thermal protection, phase loss, and over-torque status, respectively.

Both the display and the control cover can be rotated in 90° increments to meet various valve installation directions and positions.

Setting

Setting, adjustment, and viewing can be done using the intrinsically safe IZQ dedicated remote control included with the device, allowing users to easily access the actuator configuration via the LCD display.

Help Screen

Multiple help screens can be called up using the IZQ dedicated remote control tool, allowing for real-time, grouped analysis of control signal status, valve and actuator status, and indication status.

Valve Torque Indication

The output torque limit value of the actuator can be set via the dedicated remote control buttons. The travel level of the torque switch can be checked and adjusted according to the actual valve operating torque requirements, making the setting more accurate and more in line with actual requirements, thereby reducing the possibility of future failures. Problems such as valve pinch points, bottom plates, and lifting forces can be immediately detected and checked and evaluated on site.

In remote control mode, the operation depends on two independent signals. Taking the valve closing command as an example, a remote valve closing input signal and a valve closing interlock input signal are provided simultaneously. The actuator will operate and close the valve. If only one signal is provided or one signal is lost, the actuator will hold its position or stop to prevent failure. For applications requiring ESD, a dedicated ESD input can be used. This input has higher priority than local or remote control signals, so when this signal is applied, any current or applied control signals will be ignored.

Asset Management - Data Logging

The actuator configuration and construction information can be queried using a dedicated remote control. This product also includes a data logger that can be used to capture valve, actuator, and control system status information and store this information in memory. This information includes:

Valve Torque Distribution Chart

Instantaneous and average torque at the corresponding valve position open/close. The reference distribution chart saved during the debugging phase can be compared with the torque distribution chart during operation for valve performance analysis.

Startup Log

Startup position chart at the corresponding valve position open/close. Allows process control valve operation.

Statistics

Number of operations, number of power failures, operating time, maximum torque, last limit switch operation, battery operating time, battery voltage.

Detection Log

Control system, actuator, and indication event logs. Events of interest to the user, such as "torque travel," can be replayed and filtered. The last 1024 events will be saved, noting the date and time the event occurred.

Manual Operation

A directly driven handwheel (or a gear-driven handwheel used on larger models and under IZQ) provides reliable emergency manual operation in the event of a power failure. The manual/automatic disengager ensures safe operation even when the motor is running.

Note: Unless the manual/automatic handle is intentionally locked in the "manual" position, motor operation always takes precedence. Both directly driven and independently geared handwheels have a free-stroke "hammering" effect.

Non-Invasive Setting

All actuator settings and diagnostics are performed using IrDATM communication through a sealed indicator window without the need to remove the cover on site and expose the internal control mechanism.

Local Control

The on-site control switch and local/stop/remote selector operate internal magnetic reed switches, eliminating the need for a sealed, moisture-proof through shaft.

Position Control

Hall effect magnetic pulse system, accurately measures and controls the actuator stroke without using any gears or switches.

Wiring Terminal Box

Even when the terminal box cover is open for on-site wiring, the separately sealed terminal box effectively ensures the sealing and integrity of the electric device's interior.

IZQ Motor and Drive Unit

The motor shaft and worm gear are independent, allowing for quick replacement of the actuator motor. The low-inertia, high-torque motor allows the motor to quickly reach peak torque after startup, and there is almost no over-limit movement when not energized. A precise temperature sensor inside the temperature coil is unaffected by ambient temperature, keeping the motor at optimal thermal capacity. The motor drive unit includes a stroke "hammering" device to help open and close tight valves. The worm wheel and worm gear run separately submerged in lubricating oil to accommodate the largest environmental temperature differences.

Thrust Pressure

Cast iron, water-sealed bearing housing, simple, detachable drive shaft sleeve can be machined according to the valve stem for connection to the valve.

Design Features - Reliability:

The synchronizer prevents damage to the valve due to wiring errors.

The IZQ electric actuator's unique "synchronizer" automatic rotation adjustment device prevents incorrect motor running direction due to incorrect three-phase power wiring, thus preventing valve damage, ensuring that the IZQ's three-phase motor always has the correct power phase sequence. The synchronizer detects the impending phase rotation and then energizes the appropriate contact points, ensuring that the motor runs in the correct direction to ensure that the actuator moves in the correct direction.

Phase Loss Protection

The IZQ controller monitors all three phases of the power supply. If one or more phases are lost, the controller will prevent the device from operating, preventing the motor from "single-phasing" or even burning out. The actuator will also display power phase loss information and can provide remote alarm status indication from configurable indicator nodes.

IZQ Overheat Protection

If the coil overheats, the temperature regulator in the motor coil directly detects the coil temperature and disconnects the actuator's control circuit.

Instantaneous Reversal Protection

When the actuator receives an instantaneous reversal command, an automatic time delay circuit prevents unnecessary wear and tear on the valve stem and gearbox from impact loads. This circuit can also limit surge current through the contactor.

Motor Protection When the Valve is Stuck

When the valve is loose, the operating force reaches the maximum value, or the valve in operation is occasionally stuck, the actuator faces the most severe test. IZQ's intelligent functions systematically handle these problems, ensuring reliable valve operation while providing necessary protection for the valve and actuator.

If the valve may be "stuck," a torque switch bypass can be set at 5% of the valve's correct position for wedge gate valves. This applies "extra" torque to the incorrectly positioned valve, with an average torque of 1.4 to 2 times the rated torque. In most cases, applying extra force will cause the stuck valve to start moving, allowing the equipment to continue operating. After reaching the 5% position, the torque switch returns to the correct setting until the remaining stroke is completed. If this extra torque is still insufficient to move the valve, the IZQ will consider the valve to be stuck and stop operating within seconds to prevent further damage to the valve or motor burnout.

Automatic Self-Test and Diagnostic Function (ASTD)

At any time, once the actuator is powered on, it will automatically check the operating circuit to ensure correct operation. For rare equipment failures, they can be diagnosed and automatically displayed on the screen as icons, while the actuator's electric operation will be prohibited for on-site maintenance.

Design Features - Protection:

Protection is Key

Extensive experience with electric actuators has enabled the product to achieve a world-leading position in actuator protection. The actuators operate reliably in environments ranging from deserts to tundra, from sea level to underground, where the air is humid, extremely hot or cold, and highly exposed to ultraviolet radiation and corrosion. We know that the most important factor in actuator reliability is its resistance to environmental influences - in short, the protective housing.

Double Sealing, Double Protection

The IZQ has an IP68 protection rating - underwater at 2 meters for 48 hours, NEMA4/4X16. Completely waterproof and dustproof, and does not "breathe." The "double seal" system ensures that internal components are protected because they are isolated from the internal cables and terminal box by a waterproof terminal module. Even during on-site wiring, with the terminal cover removed, protection is maintained, and the terminal module cover is sealed.

Non-Invasive - Lifetime Seal

The IZQ does not require removal of the electrical box cover during on-site commissioning. All settings and adjustments, including setting the IZQ's speed, are done using the provided infrared setting tool. After assembly in our factory's controlled environment, air convection is eliminated, and all internal components are protected for life. Non-invasive control means that no through shafts are used through the control box.

Simple, Reliable

The IZQ combines a simplified design style with expanded specifications and performance.

Valve Position Measurement

Reliable process control depends on accurate positioning at the end of the valve stroke. Hydraulic control depends on accurate positioning in the middle of the valve stroke. The IZQ's non-contact valve position measurement system is the simplest design in actuator control. A single moving part resolver converts the rotation of the output center sleeve into an electrical signal, which is then compared to the limit stored in secure, non-volatile memory.

Torque Measurement

The actuator's ability to reliably and accurately determine the force required to operate a valve is fundamental to protecting both the valve and the actuator. The IZQ series utilizes proven and industry-tested technology to achieve precise and repeatable torque measurements regardless of frequency, voltage, or temperature variations.

In recent years, integrating industrial control systems through network connectivity has become a key feature of the IZQ series actuators. Actuators using fieldbus control systems simplify, enhance reliability, and improve the convenience of control and monitoring tasks in modern factories.

All IZQ actuators offer a range of compatible components, ensuring compatibility with various communication and process control bus systems. The actuators report status feedback to the overall plant control system (DCS or PLC) and receive valve control commands via various fieldbuses.

The IZQ series actuators can be configured with Foundation Fieldbus, Profibus, Modbus, and DeviceNet buses. Combined with our company's extensive expertise in bus systems, this ensures the IZQ series actuators consistently provide the ideal and most effective solutions for diverse user control systems. Inserting the appropriate circuit board module into the actuator's electrical socket—typically done during manufacturing—simplifies operation and cost-effectively reduces costs. Combine use of the IZQ Setup Tool Professional and network testing tools for the selected protocol to test and configure modules.