Summary of Contents for Mea Hawk
- Page 1 2600 American Lane | Elk Grove Village, IL 60007 | USA T +1 847 766 9040 | F +1 847 350 1951 COMPLETE CONTROL www.meaincorporated.com MEA Hawk Instruction and Operation Manual...
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Page 2: Table Of Contents
CONTROL www.meaincorporated.com TABLE OF CONTENTS i. Safety Information .................................... 5 ii. Intended Use of the Hawk Actuator ............................6 iii. Environmental Considerations ..............................7 1. GENERAL DESCRIPTION ................................7 1-1 About MEA Inc..................................7 1-2 Customer Support .................................. 7 1-3 The Hawk Actuator ................................ - Page 3 5-10 Safe Seat Adjustment ..............................37 5-11 Safety Precautions ................................38 5-11.1 Releasing Accumulator/Reservoir Stored Energy ..................38 5-11.2 Releasing Safe Seat Stored Energy ........................39 6. MAINTENANCE ....................................40 6-1 Quarterly Inspection/Maintenance ..........................40 MEA Incorporated | Hawk Actuator Instruction and Operation Manual 02/2018...
- Page 4 T +1 847 766 9040 | F +1 847 350 1951 COMPLETE CONTROL www.meaincorporated.com 6-2 Five Year Inspection/Maintenance ..........................40 6-3 Ten Year Inspection/Maintenance ..........................41 7. TROUBLESHOOTING ................................... 41 MEA Incorporated | Hawk Actuator Instruction and Operation Manual 02/2018...
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Page 5: Safety Information
Safety Information As with any powered industrial equipment, when installing, operating, or servicing a Hawk actuator the technician or operator needs to be aware of potential safety risks prior to performing any operation. Hawk actuators contain hydraulic fluids under high pressure, hazardous electrical voltage, and can develop large forces. -
Page 6: Intended Use Of The Hawk Actuator
Lock Out and Tag Out procedures to prevent personal injury or process interruption. ii. Intended Use of the Hawk Actuator Under no circumstances should the Hawk actuator be used for any purposes outside of its intended use. Misuse of the unit can lead to harmful consequences including damage to critical components and serious injury to the operator. -
Page 7: Environmental Considerations
In addition to our factory service and sales departments, MEA also employs a worldwide team of representatives to ensure help is never far away. For service, sales, warranty or technical support, please contact our facility at the following:... -
Page 8: The Hawk Actuator
1-3 The Hawk Actuator The Hawk is a high-performance, rugged line of linear and rotary electro-hydraulic actuators and drives. It is ideal for applications requiring high duty cycles, large thrust and torques, or fast stroking speeds. The Hawk’s modular electro-hydraulic system is easily configurable to suit specific valve or damper control requirements while at the same time providing safe and virtually maintenance free performance. -
Page 9: Optional Features
1-5.2 Fail to Position The Hawk Actuator can be configured to fail in one of three positions: Extend/Clockwise, Retract/Counter- Clockwise, or Last Position. The Extend/Clockwise and Retract/Counter-Clockwise failure positions are achieved via compressed mechanical springs or charged hydraulic accumulators. -
Page 10: 1-5.3 Seat Protection
The Hawk’s Safe Seat feature protects the valve in two ways, by hydraulically limiting the maximum force the actuator applies to the valve in the seated position and by maintaining a constant force on the seated valve. -
Page 11: Area Approvals
Deadband Adjustable from 0.05% to 5% of Stroke 1-7 Area Approvals The Hawk actuator and control enclosure must only be installed in areas which are appropriate for each item’s respective area approval. Actuator Cl 1, Div 2, Groups A, B, C, D (Standard) -
Page 12: Operating Temperatures
T +1 847 766 9040 | F +1 847 350 1951 COMPLETE CONTROL www.meaincorporated.com 1-8 Operating Temperatures The Hawk actuator and control enclosure must only be installed in areas which are appropriate for each item’s respective temperature rating. Actuator Standard -20 °F to +130 °F (-29 °C to +55 °C) Cold Weather Package -40 °F to +110 °F (-40 °C to +43 °C) -
Page 13: Special Tool Requirements
Figure 1-8.1 Heat Trace Output 1-9 Special Tool Requirements The following tools required for Hawk installation and maintenance may be considered special. Standard hand tools are used for all other installation and maintenance procedures. Hydraulic Fluid Fill Gun ... -
Page 14: Shipping, Handling, Storage
It is highly recommended that all MEA products are stored in a controlled environment and remain in their original shipping container during the duration of storage. The recommended storage environment for all MEA products shall be clean, non-corrosive, dry, and at a temperature between +32 °F and +100 °F (0 °C and +38 °C). -
Page 15: Theory Of Operation & Design
3. THEORY OF OPERATION & DESIGN 3-1 Design Principle The Hawk’s Hydraulic Power Source (HPS) design utilizes a bi-directional gear pump directly coupled to a servo motor. In conjunction with the pump & motor, electronically controlled solenoid valves are used to sequence flow operations. -
Page 16: Linear Actuator
3-2 Linear Actuator The linear version of the Hawk actuator consists of a single, double-acting, equal displacement cylinder, which in combination with pressurized fluid from the HPS, creates linear movement of the driven device. In Control mode, the actuator receives a desired position signal from the DCS. This signal is compared to the current position signal provided by the actuator’s position feedback. -
Page 17: Rotary Actuator
3-3 Rotary Actuator The rotary version of the Hawk actuator consists, depending on required torque output, of either one or two double-acting, equal displacement cylinders which in combination with a rack and pinion linkage and pressurized fluid from the HPS, creates rotary movement of the driven device. In Control mode, the actuator receives a desired position signal from the DCS. -
Page 18: Multiple Motor/Pump Units
The solution is to utilize both a large displacement and small displacement pump in the same system utilizing the advantages of both and neutralizing the disadvantages of using either individually. MEA Incorporated | Hawk Actuator Instruction and Operation Manual 02/2018... -
Page 19: Hawk Model Number
2600 American Lane | Elk Grove Village, IL 60007 | USA T +1 847 766 9040 | F +1 847 350 1951 COMPLETE CONTROL www.meaincorporated.com 3-5 Hawk Model Number MEA Incorporated | Hawk Actuator Instruction and Operation Manual 02/2018... -
Page 20: Controls
The Hawk speed and response tuning can be configured by the user within the Setup menu. Intermediate Window All Hawk actuators operate in two speed modes. A faster speed for large position changes and a slower speed for fine-positioning. This setting determines the point at which the actuator switches from the faster to the slower speed and is entered as a percentage of actuator movement. -
Page 21: 4-2.1 Multiple Motor/Pump Speed & Response Tuning
Not in Position Alarm Time The Hawk actuator controls monitor the duration of time needed for the actuator to move to a new position after receiving a control signal. If the actuator is unable to reach the new position the motor/pump are de-energized to prevent damage to the actuator or driven device. - Page 22 Intermediate Speed mode. Run Max All Hawk motors/pumps have the ability to operate in two speed modes. A faster speed for large position changes and a slower speed for fine-positioning. The faster, large position change speed is referred to as the Max Speed.
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Page 23: Control Signal And Position Calibration
The Hawk controls will scale the input accordingly. To set the actuator position calibration perform the following procedure: 1) Power the Hawk Control Enclosure and confirm the HMI boots up. Press the Login button and login using the Admin username and password. - Page 24 Change the control signal to match the desired signal for this actuator position. (For example, if the actuator was Retract on Increasing signal, set the control signal to 20 mA) MEA Incorporated | Hawk Actuator Instruction and Operation Manual 02/2018...
- Page 25 Press the “Next” button. Note: It is possible that the Position Feedback display will not match the Control Signal (or Manual Signal) display. That is normal. The Hawk controls will scale the input accordingly after both calibration teach points are set.
- Page 26 “Teach Complete” box will appear in the upper right of the screen. Actuator position calibration is now complete. Press the “Next” button to proceed to the Failure Modes & Limit Switch Settings screen. MEA Incorporated | Hawk Actuator Instruction and Operation Manual 02/2018...
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Page 27: Failure Modes & Limit Switches
CONTROL www.meaincorporated.com 4-4 Failure Modes & Limit Switches The Hawk behavior on loss of control signal and loss of main power can be configured by the user within the Setup menu. Loss of Control Signal Upon loss of control signal the Hawk actuator can be configured to fail to one of four positions: Fail to the 4 mA Position ... -
Page 28: Installation
5-1.1 Proper Protective Earthing If the MEA field wiring diagram is adhered to, the HPS will be grounded to the Control Enclosure. Grounding of the Control Enclosure must then be performed per applicable local electrical and hazardous area codes. -
Page 29: 5-2.2 Rotary Actuator Alignment
The hydraulic fluid level indicator for each Hawk actuator is located inside the lower portion of the HPS enclosure. The HPS cover, ¼-20 x 1 socket head cap screws which is secured by eight (8) (3/16”... -
Page 30: Hydraulic Power Source (Hps) & Actuator Fluid Fill Procedure
Trapped air may quickly exhaust or could present itself as foaming hydraulic oil. 6) Re-check fluid level indicator and add hydraulic fluid until it again moves to the fully extended position. MEA Incorporated | Hawk Actuator Instruction and Operation Manual 02/2018... - Page 31 ¼” from the fully extended position. The container will catch approximately 1 cubic inch of hydraulic fluid. 15) The actuator is now properly filled with hydraulic fluid. 16) If applicable, re-open the accumulator system shutoff ball valves. MEA Incorporated | Hawk Actuator Instruction and Operation Manual 02/2018...
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Page 32: Accumulator/Reservoir System
Large HPS units the duration of the recharge cycle is roughly equal to the 1.5 times the normal stroke time of the actuator. For XL, Mega and Mega XL units, the larger, second pump does not run during the MEA Incorporated | Hawk Actuator Instruction and Operation Manual 02/2018... -
Page 33: Accumulator/Reservoir Fluid And Nitrogen Drain Procedure
If leaking gas is discovered, extra care should be taken to avoid risk associated with ejection of fittings or hoses. 1) Close the shutoff ball valves located upstream of the accumulator and reservoir. MEA Incorporated | Hawk Actuator Instruction and Operation Manual 02/2018... -
Page 34: Accumulator/Reservoir Fluid And Nitrogen Fill Procedure
MEA recommends that the reservoir hold a volume of hydraulic fluid that is 1.25x the actuator cylinder volume. Using a spare piece of 3/8” tubing inserted into the hydraulic fluid fill port of the reservoir push the piston downward a distance equal to the “Reservoir Initial Piston Distance”... - Page 35 Note: For this first accumulator failure cycle, the unit will most likely not fully stroke to the accumulator fail position. 18) Return the actuator to the non-failure state, whether that be by restoring control signal, main power, or ESD power. MEA Incorporated | Hawk Actuator Instruction and Operation Manual 02/2018...
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Page 36: Safe Seat System
This slowing of the pressure rise allows the pump motor to change system pressure over a greater length of time, thus allowing more accurate actuator pressure control. MEA Incorporated | Hawk Actuator Instruction and Operation Manual 02/2018... -
Page 37: Safe Seat Adjustment
Safe Seat Speed while monitoring the Safe Seat pressure switch. 3) Determine the appropriate Safe Seat pressure switch setpoint. Note: The Hawk actuator is designed to produce maximum output, torque or thrust, when the actuator fluid pressure is 2000 psi. There is a proportional relationship between pressure and... -
Page 38: Safety Precautions
5-11 Safety Precautions Due to the presence of potentially dangerous electrical and mechanical energy, prior to performing installation and maintenance of any Hawk actuator appropriate safety precautions must be taken. These precautions should include, but not be limited to the following: Adherence to site specific permitting and safety guidelines ... -
Page 39: 5-11.2 Releasing Safe Seat Stored Energy
COMPLETE CONTROL www.meaincorporated.com 2) For linear Hawk units, use the Manual mode on the HMI to decouple the actuator from the valve/damper. 3) Disconnect the power supply to the actuator. 4) Vent nitrogen from the accumulator and reservoir through the nitrogen fill port. -
Page 40: Maintenance
6. MAINTENANCE The Hawk actuator is designed to provide robust and precise operation while keeping maintenance to a minimum. However, adequate preventative maintenance procedures are paramount to extending the life of any mechanical device, including the Hawk, and are highly recommended. - Page 41 6-3 Ten Year Inspection/Maintenance It is recommended that the following, more extensive, maintenance is performed at ten (10) year intervals to ensure the proper, long term, working condition of the Hawk actuator: Quarterly visual inspection Install soft goods repair kit (includes cylinder, manifold, and HPS soft goods) ...
- Page 42 Over time general wear and tear may cause pump slip to increase. Actuator stroke speeds have The pump is slipping This can lead to lost pump efficiency and actuator speeds will become slower become slower as a result. MEA Incorporated | Hawk Actuator Instruction and Operation Manual 02/2018...
- Page 43 An ESD condition may be triggered by improperly landed field ESD is active alarm 24 VDC ESD power has been lost wiring, physical damage to wiring, or a loss of 24 VDC ESD power. MEA Incorporated | Hawk Actuator Instruction and Operation Manual 02/2018...