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HEM Multi-turn Actuator

The HEM series is a new generation of multi-turn electric actuators developed and manufactured by the technical team of Heli based on user needs and years of development experience.

The HEM series can produce a variety of models according to user needs, such as basic, intelligent, bus, intelligent split and other forms, which are safe, stable and reliable to meet different application scenarios in various fields.

HEM series multi-turn electric actuators can be used not only with straight-stroke valves such as regulating valves, venting valves, and stop valves, but also with corner-stroke valves such as butterfly valves, ball valves, and plug valves after installing a part-turn worm gear box.

HEM series direct output torque range is 100N.m-3000N.m, output speed range is 18rpm-144rpm, according to different speeds and different speed ratios, with electric special worm gear box can be converted to greater and more torque requirements.

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  HEM-Summary


Multi-turn electric actuator

Available torque range from 60N.M to 3000N.m.

Available speed range from 18rpm to 144rpm.

Designs and controls with basic,intelligent,fieldbus and separated control box to select.

IP67 enclosure protection as standard,IP68,BT4/BT6,CT4/CT6 as options.

Suitable for ball valve,butterfly valve,plug valve,gate valve,globe valve,check valve and regulating valve.


  HEM-Advantages


Advance technology

Reliable operation

Heavy duty motor

Accurate torque measure

Continuous position tracking

Real time valve and actuator performance information

Auto self test and diagnosis

Versatile enclosure

Easy maintenance

Hardwired controls and fieldbus communication options.

Asset management


  Non intrusive setting


Command/Mode selector switch for remote or local control

Infrared remote control to set and commissioning


  Valve and Actuator Protection


Phase monitoring

Protection of change in direction

Motor thermal protection

Torque protection

Emergency shutdown protection

Failure monitor relay

Password protection

Failure Alarms indication


  User friendly &intuitive controls


High resolution LCD display(except for basic type)

Local signal

Local commands

User friendly menu


  Specificities


1.Double sealing

Two o-rings insure an optimum protection against water ingress into the electrical compartment based on GB/T4942.2-93,IP68 as option.


2.Non intrusive setting

Open/Close/Stop button and LOC/OFF/REM selector switch to achieve the close and open operation at site.

The infrared remote control to set and commissoning the data.


3.Rotatable electrical compartment and LCD display.

Possible to rotate the electrical compartment with LCD display to suit the actuator mounting.

Possible to rotate the direction of cable entries to meet the wiring requests.

The high resolution display has a wide view making it legible from a distance.


4.Heavy duty motor

Squirrel cage motor with built-in 135℃ thermostat protection,low inertia design,Class F insulated.


5.Position measure

Absolute position encoder output the accurate position to show on LCD,there is no position loss due to mains power loss or any interferences.


6.Torque sensor

The torque sensor directly measures output torque and converts value to a voltage signal.Torque of intelligent type can be set in the range 40% to 100% of rated torque with the additional facility to bypass torque switch.


7.Drive train

The drive train uses the basic design with the features of simple,reliable and robust, the components are oil lubricated with maintenance-free.


8.Explosion proof enclosure as option

In accordance with ExdIICT4,atmospheric pressure range from 86Kpa to 106Kpa,ambient temperature range from-30℃ to 60℃.

ExdIIBT4,ExdIIBT6,ExdIICT6 as options.


9.Handwheel and Declutch button

Push the red declutch button to achieve the handwheel operation when emergency or commissioning.


  Model meaning


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  Technical specifications


Intelligent type

Standard Specification

Torque

60-3000Nm(witbout worm gearbox)

Output Speed

18-144(rpm)

Ambient Temperature

-30℃-70℃(-40℃-70℃ as option)

Vibration Resistance

Comply withJB/T8219

Noise degree

Less than 70dB witin 1meter

Cable entries

Two NPT3/4,one replacement for NPT 3/4(If you have any requirement of cable entry,pls kindly contact us)

Enclosure Protection

IP67 as standard,IP68 as option

Mounting base

Standard JB2920(clutch);IS0520(trust,spline)

Technical Specification

Motor ratings

Ctass F, with135℃ thermal protection

Duty rating

ON-OFF:S2-15min, less than 600 starts/hour

Modulating:S4-50%, less than 600 starts/hour

Option:1200 starts/hour

Voltage

AC380V(±10%)/3PH;50HZ(±5%)3PH,4wire

AC220V, AC415V and other voltages as option

Fieldbus controls

Modbus, Profibus, Hart

ON-OFF

Control signal

ON-OFF signal(dry contact,24V,220V, possible to exchange between inching and keep)

Feedback signal

6 x relay contacts(5 x state relay +1 x faulit relay)

1 xanalogue feedback: 4-20mA, output impedance:≤750Ω(4~20mA as standard;0-10V,2~10V as option)

Modulating

Control signal

ON-OFF signal(dry contact,24V,220V, possible to exchange the inching and keep)

Analogue signal:4~20mA, input impedance:65Ω;(0~10V,2~10V as option)

Feedback signal

6 x relay contacts (5 x state relay+1 x fault relay)

1 x analogue feedback:4~20mA, output impedance:≤750Ω(4-20mA standard;0-10V,2-10V as option)

Deadband 

0.3-9.9% adjusted within full stroke

Polarity

Yes

Signal loss action

Yes

Operation Mode

Indication

LED display

Open/Close/Remote/Failure lamp(Digital shown in percent for position and torque)

Menu operation

Remote control or Selector switch

Configuration set(position, status feedback, Max. torque)

Local control

Command selector switch(OPEN/CLOSE/STOP)

Mode selector switch(LOC/REIM/OFF)

Data logger and diagnostics

Intrared remote control suit menu to access the fauts diagnosis

others

Functions

Automatic phase correcton(3PH only)/Alarms(Local and remote)

Torque protection/Motor thermal protection/Bypass torque switch

Space heater/ESD set(Open, Close, Keep)

Average torque

Intrared remote control

Option: Explosion proof intrared remote control


Basic type

Standard Specification

Torque

60-3000Nm(Without worm gearbox)

Output Speed

18-144 (rpm)

Ambient Temperature

-30℃-70℃

Vibration Resistance

Comply with JB/T8219

Noise Degree

Less than 7dB witin 1 meter

Cable Entries

2xNPT3/4 pus 1xNPT3/4

Enciosure Protection

IP67 as standard, IP68 as option(15m under water withoutleakage for 72nours)

Mounting Base

Comply with JB2920(Claw) or ISO5211(Thrust, Torque)

Technical Specification

Motor ratings

Class F, with 150℃ motor thermal protection.

Duty ratings

ON-OFF,S2-15min, less than 600 starts/hour

Voltage

three phase: AC380V(±10%)/50Hz(5%) three phase tour wires

Option:1PH AC220V

Fieldbus controls

None

ON-OFF

Control signal

ON-OFF, built in contact with ratings 5A@250VAC

Feedback signal

Fuly open/Fuly losed (dry contac)

open toraue switch/Close torque switch (dry contact)

Option: with potentiometer

Operation Mode

Indication

Arrow

Menu operation

None

Local control

None

ata logger and diagnostics

None

others

Functions

Space heater

Torque protection

Motor thermal protection

Option: Explosion proof infrared remote control

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