Description
1. Advanced
design
The HK Series
Electric actuators offers many specially performances, high
cost-effective even its applies in the general situation.
Non-intrusiveswitching:
The HK Series Electric actuators utilizes
magnetic
induction mode switching without any shafts penetrating the
shell.
Non-intrusivesetting:
The
actuators operational parameter setting are effected using the
non-intrusively, hand held, infra-red setting tool.
Double sealed:
All the HK
series actuators are housed in a double-sealed enclosure and
provide complete protection to the internal equipment even if the
terminal cover are removed during site wiring, the type of
waterproof actuator can running *8 hours while the actuator immerge
into water deep 3 meters.
Torque protection:
A sensor
serve as overload protection for the entire valve travel, and you
can setup a different torque volume between *0~**0% of rated
torque, in addition the open torque protection value can be
different from close torque.
Limitprotectionsetting:
If this
function is enable, the actuator shall be stopped automatically
while the valve position reaches the limit position.
Loss Phase protection:
The
actuators real time monitor all three phase of the power supply
during operation to prevent the motor from running when the
power supply is short of phase.
Electronic Latching :
Electronic
Latching inhibits the actuator torque protection function within 5
seconds and allows the motor to generate torque in excess of rated
torque to enable operation of jammed valves while starting
operation signal is enable , should the actuator stall when
attempting to unseat a valve stuck in its seat, the motor will be
de-energised to prevent damage.
Motor thermal
protection:
Two
thermostats are embedded in the windings for provide
thermal-protection by de-energise motor in the event of motor over
the maximum temperature.
Electric protection:
The input
and output signal channel of circuits are designed as photoelectric
isolate mode.
Valve position and torque measure:
Use hall
effect magnetic pulse system continually monitoring the valve
position and use the magnetic flux and current of the motor for
continually measures the controlling torque are to avoid the
mechanical wearing and ensure function stability.
Automatic correction for phase
sequence:
The actuators
monitor the phases and run in the correct direction regardless of
the sequence of power supply connection that is realized through a
phase rotation correction Boolean logical calculation .
Setting the
following configurations with infra-red setting tool
² Direction
to close
² Close
limit position protection function
² Close/
open operation torque value
² Open
/close limit position
² ESD
Optional function (ESD: Emergency shut down)
Digital indication of valve
position:
The
percentage digital of valve position real time indicates on LCD
display.
Power failed protection:
If main
power failed, the internal battery of the actuator should supply
power for control circuit and supports valve position control in
hand operation. In case of no battery available, actuator can save
the currently valve position Data as well.
Handwheel operation:
Direct
drive handwheel to provide reliable emergency manual operation in
the event of a power supply failure. Electric operation always has
the higher priority than manual operation, when motor is energized
that the operation state automatic switch to electric operation
mode unless hand/auto lever is purposely locked into ‘manual
operation’
Explosion proof:
The
actuators has high class enclosure which is designed according to
GB***6, it provides reliable ingress and seals guarantee. In
addition, the threaded is designed at the cable entry conduit of
the actuator for fixing explosion proof tube.
High torque, low
inertia motor:
The low
inertia and high torque motor generates peak torque rapidly after
starting but with very little overrun when it is
de-energized.
Lubrication:
HK
series are filled with high-quality gear oil, the most important
machine parts such as worm and turbine operates in an oil bath to
reduce wearing and extend life.
Standard valve/actuator
interface:
Actuator
Base of ranges HK*3 to HK*0, designed as a removable mode and
Series HK**0 to HK**0 as an integral mode, the flange and drive
bushing conforming to international standard ISO***0
Thrust bearing
configuration:
The type
‘A’ is the thrust type drive bushing that couples a fully sealed
and lubricated thrust bearing to guarantee which have not any load
effects on the actuator inner structure.
Solid state circuit
measure:
All of
Series HK provides the solid state circuit to measure the torque
without any mechanical equipments such as the spring switch or the
level.
1.1 Specification:
Power Supply:
**0VAC/*0Hz **0VAC/*0Hz
Watertight
Enclosure : IP*8
Explosion
Proof: Exd II
CT4
Ambient
Temperature: **0~**0Cº
Ambient
Humidity: ≤*5%
Frequency of Operation: To the on-off mode is *0 starts per hour;
the modulatory mode are divided into two kinds, one is **0 starts
per hour, the other is ***0 starts per hour; all series HK
actuators are maximal continuous operation time within *5 minutes
per hour.
2 .
Applications
2.1 Multi-turn control:
Series
HK on-off mode multi-turn actuators suitable the required that
within *0 starts per hour, maximal continuous operation time within
*5 minutes and duty cycle under *3%. The Series HK has also
modulatory mode actuator(the frequency of operation is under **0
starts per hour or under ***0 starts per hour) . Series HK on-off
mode actuator combined with B,S, or D gear box could control the
largest gate valve, globe valve and the reduction ratio as 4:1,
6:1, *0:1, *0:1, *0:1, *0:1 and listed go on. In this case, we can
get the largest output torque.
Rated Output
Torque:*4Nm ~ ***0Nm;
Output
speed: *8 / *4
/ *6 / *8 / *2 / *6 / **4 / **2 rmp;
Series
HK on-off mode actuators provide ‘B’ type drive bushing for output
rotate operation and ‘A’ for Linear operation.
2.2 Linear control:
Series
HK on-off mode actuator combined with X series components could
directly control linear operation valve such as slide valves.
2.3 0~*0ºQuarter Turn
control:
Series
HK on-off mode actuator combined with W gear box could carry out
valve’s quarter turn operation, the reduction ratio as *0:1, *0:1,
*0:1 and list go on, in this case, we can get a largest output
torque.
