BAILI ERTONG SMC Series User manual

SM-22
(Read this operation manual carefully before using the product)
SMC Series Valve Electric Actuator
Operation Manual
TIANJIN BAILI ERTONG MACHINERY CO., LTD.
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Content
Part I SMC Series Basic Type Operation Manual ...............................................1
Part II SMC series integral type operation manual..............................................13
Part III SMC explosion-proof type operation manual .........................................14
Part IV SMC-04SMC-2 low-temperature operation manual...........................16
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1
Part I SMC Series Basic Type Operation Manual
1. Summary
SMC series multi-turn electric valve actuator (hereafter referred to as electric actuator) is used to operate
gate valve, globe valve, diaphragm valve and other multi-turn valves which drive valve’s disc to make linear
movement. Some of SMC series different seating numbers products could be combined with BA bevel gear
reducer or spur gear reducer, as a SMC/BA combined multi-turn electric actuator. SMC series could be
combined with HBC worm reducer or planetary reducer to form a combined quarter-turn electric actuator
which is used to operate ball valve, butterfly valve, cock valve and other quarter-turn valves.
SMC series could be electrically remotely controlled (in the control room) and could also controlled by
control buttons on site so as to be operated locally. SMC series’ manual operation mechanism realize local
manual operation against valve.
While the controlling part and modulating part of SMC/BA, SMC/HBC, SMC/JA and other combined
electric actuator are on SMC, this Operation Manual also can be used for those products above mentioned.
Fig1 to Fig9 are SMC, SMC/BA, SMC/HBC and SMC/JA basic type’s outline diagram. For the outline
dimensions and connection dimensions of the above products, please refer to the product catalog. For the
output torque, rotation speed, rotation number, motor power and other parameters, please refer to the
nameplate on the electric actuator.
2. Major technical parameter
The product complies with GB/T 24923ljBasic Type Electric Valve Actuator Technical ParameterNJ.
2.1Power supply:380V,50Hz (special orders, including 220V,415V,440V,460V,480V,660V,690V,50Hz,60Hz,
are available.) ;three-phase sine AC (for some models, single-phase 220V motor is available according to
user’s requirement.)
2.2 Enclosure protection grade:IP65IP67 (Please notify us if IP68 is required.)
2.3 Ambient temperature: -20ć70 (as user required)ć
2.4 Relative humidity: 90ˁ(at 25 )ć
2.5 Altitude: 1000m
2.6 Short-time duty: 10minǃ15minǃ30min rated time (according to motor loading)
2.7 Without strong vibration
2.8 Without strong corrosive medium and explosive mixture gas
3. Main content of the product nameplate
Some main technical features of the product are noted on the electric actuator’s nameplate. Users should
pay attention to it.
a. Model: the product’s model.
b. Nominal torque: the maximum controllable torque value (N.m) which is set before products leaves the
factory.
c. Output speed: turning numbers of the output shaft in a unit time (r/min).
d. Maximum turning numbers: the total turning numbers when the indication mechanism’s pointer starts
from 0 and ends at 100%.
e. Serial number: total serial number or serial number of this year.
f. Contract number: the product’s contract number in this year, which is helpful to search all the information
of this product and provide after-sales service.
4. Main structure
Electric actuator consists of the following components:
4.1 Special-used motor: it applies to valve’s loading performance and service condition. Type: YLT
4.2 Reducer mechanism: Used to transfer and increase the power of motor. There are 3-5 kinds of ration of
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worm and worm gear and various motor gears and worm shaft gears combination, so that can get wider output
speed range.
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4.3 Driving tubular shaft: it is the electric actuator’s power take-off component, including three types which
are 2-PC, 1-PC and jaw type. For its structure, refer to Fig.10 to Fig.12.
2-PC driving tubular shaft has a inside valve stem nut and electric actuator bears valve’s axial force.
Generally, valve stem’s inner thread is processed by user. 1-PC driving tubular shaft is applied to non-rising
stem valve; or it could be connected with input shaft of HBC, BA, JA and other reducers. Its inner hole could
be single key, double key and spline. Jaw type driving tubular shaft could be meshed with valve stem’s jaw.
The type of the driving tubular shaft is chosen by user.
1.Driving shaft 2. Worm steel 3.Valve stem nut 4. Lock master
5.Bearings 6.Bearing 7.Valvestem
SMC/BA combined multi-turn electric actuator’s driving tubular shaft has three types.
For SMC/HBC, SMC/JA quarter-turn electric actuator’s driving shaft structure, refer to Fig.13. It has a
spline joint head inside it, which makes the connection between valve and electric actuator easily.
The hole which is used to connect spline and valve is generally processed by user.
4.4 Manual-electric switching mechanism
It is used to switch the electric actuator from electric operation mode to manual operation mode and vice
versa. It called “half-electrical mode, and electric operation mode is on the priority”. Push the switch handle
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according to the arrow position before start to operate manually, and then try to turn the handwheel until the
switch handle gets 100% right place. Manual- electric mode switch is done at that time. Turn the handwheel to
begin manual operation. When electric operation is required, OPEN or CLOSE button can be pushed to make
the electric actuator in electric mode. For the deposition of manual-electric switch, refer to Fig.14.
Note: forbid to turn the switch handle forcefully to its electric mode position, which could
make the inner actuator damaged.
4.5 Manual operation mechanism: after finish switching the electric actuator into manual operation mode
and then begin to operate it manually. Manual operation mode of SMC-04 and SMC-03 is connected with
low-speed shaft. When in manual operation, turn the driving tubular shaft directly. Manual operation
mechanism is connected with high-speed shaft; while using it, manual operating by the handwheel through
worm gear shaft of reduction unit.
4.6 Torque control mechanism: it is used to control the electric actuator’s output torque. It is formed by two
parts which are worm gear, torque swing unit and torque switch unit.
Torque switch (hereafter referred as T.SW): when “Position Control” is selected, T.SW starts its protect
function. When “torque positioning” is closed, T.SW starts it control function.
4.7 Stroke control mechanism: it is used to control the valve’s end position and feedback valve’s contact
signal. It is composed of counter, middle transmission assembly, finger shape contact sheet seat and rotating
contact switch. The stroke control movement of SMC-04~2 starts from low-speed shaft(driving tubular
shaft). The limit control movement of SMC-3~5 starts from high-speed shaft(worm gear shaft).
Limit control mechanism of SMC series is also called “gear limit switch” (herein after referred as G·L·SW).
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For its structure, refer to Fig.16. It can provide two kinds of contact types which are 4R-2C and 4R-4C. 4R-2C
type has 8 self-cleaning, large capacity, swiveling contact switches. 4R-4C has 16 this kind of switches.
According to control modes, it shall be chose by user when places orders.
Each row of the swiveling contact on the G·L·SW’s position could be arranged freely. That is to say, the
rotor of the same row can be arranged as “OFF” type or “OFF””ON” type. (“OFF”“ON”type is often applied.)
Two middle rows of swiveling contact switches on the G·L·SW can be used as two certain position’s signal
output of the valve. Also, it can be set up to achieve synchronous action with other rows.
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4.8 Position indicator mechanism: it is used to show valve’s position. It is also called MDPI. Two functions:
pointer-dial scale type, indicating valve position on site; potentiometer makes feedback of valve position to
show in the control room. The above functions could be totally
or partly provided to user.
G·L·SW’s contact signal is different and MDPI’s valve
position feedback signal is continuous.
Fig.19 shows MDPI position indicator mechanism. Numerous
pairs of small modulus gears can be seen from Fig.19. This
mechanism can fulfill valves with any nominal diameters to
show a dial scale which is from 0% to 100%.
ȒAbout the electric actuator’s controller
In the general control theory, controller is a separate part from
the electric control part. The controller is always set in the
control room. If required by user, another order shall be placed
for the controller.
For the Integral electric actuator, there is no use of a separate
controller. The electric components of the control system are
totally set in the electric actuator’s controller case.
Any kind of control type shall chosen by user. Our company
provides separate controller and its instruction manual.
5. Mounting and dismantling(against the valve)
5.1 Beforehand, process the valve stem nut’s inner thread or spline jointed head’s inner hole/ key, so that will
fit with the valve(1-PC and jaw type driving tubular shaft do not need to do so.)
5.2 Mounting and dismantling methods for the electric actuator with 2-PC driving tubular shaft are as
following:
Put the processed valve stem nut in the tubular shaft and fix it by using locknut. Lift up the electric actuator
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to align the stem with the internal thread of the stem nut.(Revolve direction is left for standard stem thread.)
Turn manually the actuator for valve open and lower it down gradually until touch the valve connection
surface. When the holes of flange aligned, tighten the electric actuator with the valve by bolts.
In order to assure the bolts tightened reliably, damage a part of the meshed thread of the upper part of the
sleeve and the locknut with a tool to prevent the locknut from quitting freely.
To remove the electric actuator from the valve, the method is to hang up the electric actuator properly, then
loose the bolts which connected the valve with the electric actuator, turn the actuator manually in the direction
of the valve close, then the actuator may be lifted up. (Note: Should hang the electric actuator in any
time until it separates from the stem. Should ensure to keep the hanging balance and reliable.
Especially for greater torque and size products which should be paid more attention to.)
5.3 The mounting procedure for 1-pc and the electric actuator of jaw driving sleeve is: Hang up of the valve
stem nut aligned, and then tighten the electric actuator with the valve reliably. When dismantling, first reliable
hang the electric actuator, then loose the tightened bolts, simply take off the bolts from the flange of valve.
5.4 The mounting and dismantling procedure of SMC/HBC, SMC/JA partial turn product is as following.
Mount the spline connection onto the valve stem and turn the driving shaft of the electric actuator second
grade decelerator mechanism manually to the same position as that of the valve (It is ideal that the valve in
any of the extreme position in this case). Lift up the electric actuator, make the driving shaft with the spline
connection and tighten the valve and the electric actuator by bolts reliably.
Firstly, hang the electric actuator reliably when disassemble, then loose the tighten bolts and take them off
from the valve.
(Note: Either multi-turn of partial turn electric actuator, only allow lift the electric actuator
itself by swinging ring and must not lift them with the valve).
5.5 Before mounting the actuator, it is necessary to clean the valve stem and coat it with grease. For
multi-turn valve with exposed stem, it is necessary to ensure that the protrusion of the stem must be less than
the height of the stem cover.
5.6 Pay attention to the electric valve place in the pipe line when mounting the actuator to ensure the
reasonable space for maintenance or inspection for the electric actuator.
5.7 As to the position of the mounted electric actuator no principle requirements are prescribed in normal
case. However it is recommended to make the motor shaft in horizontal position and the G.L.SW cover of box
in horizontal or vertical position facing upward, downward. This is advantageous to lubrication, maintenance
and observation on valve position.
6. Lubrication
6.1 The actuator was filled with special grease in our workshop. The product shall be inspected for
lubrication at least once a year. If no abnormal phenomenon was discovered, the lubricant may be further
used.
6.2 In normal case, the grease in the bearing of motor need not to be changed or added.
6.3 If changing grease after maintenance, should pay attention to its antioxidation, water resistance,
heat-resistance, corrosion resistance and mechanical stability etc... And also should pay attention to the
anticompression to ensure actuator lubrication and high transmission efficiency.
6.4 Special grease is preferred.
6.5 When grease is applied, care should be taken not to bring in foreign matters. After grease is filled, the oil
plug should be would with PTFE sealing tape and then tightened.
6.6 When lubricant (thin oil)is adopted in the electric actuator for special use, the electric actuator is not
filled with oil before dispatch. It is necessary to fill it with oil before putting it into operation.
7. Electric control principle diagram and electric wiring.
Because the electric control principle of SMC series electric actuators are in wide range, the electric control
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principle diagram which used in practice behind the instruction as an attachment. The terminal contrast table,
electric element data table are on the Basic electric control principle diagram.
Procedure and precaution for wiring:
7.1 Confirm that power supply voltage is identical with motor voltage shown in the name plate.
7.2 For actuators SMC-04, 03, 00, 0, 1, 2, without field push button lamp box, before wiring, remove the
G.L.SW cover (the cover with indicator window), the G.L.SW upper and front terminal plates are visible. The
wire inlet holes are located at the lower, upper or the side of the main housing.
For actuators SMC-04, 03, 00, 0, 1, 2, with field push button lamp box, before wiring, remove the G.L.SW
cover and T.SW cover (the cover at the other side of the main housing). The wire inlet hole is also located in
T.SW housing because generally the wiring terminal board is inside the T.SW housing.
Before wiring remove front square cover for various type SMC-3,4,5 products because G.L.SW and T.SW
located in same housing for above products, wire inlet hole is located down or upper of the main housing.
7.3 Connect the core wire and power cables to corresponding terminals separately according to wire numbers
shown in the electric control principle diagram. The wiring connection should be tightly and reliably(The
wiring between the electric actuator and controller also should conform to the corresponding terminal
number.)
7.4 The external ground bolt of the electric actuator is located on the main housing. The ground connection
of the products must be secure and reliable.
7.5 Inspect the phase sequence of power supply: Turn manually the valve to its middle position. Then press
“open” or “close” push button and ensure that the valve moving direction is identical with the control
operating direction. Otherwise exchange the phase sequence connections on the motor.
7.6 Thermorelay (KH): Function of thermorelay is to protect the motor against damage when trouble occurs
on wiring switch. Value of the thermorelay is set so that the motor can be stopped when trouble occurs. It can
be adjusted as follows: With starting current: Acts about 10 sec later.
With rated current: No action within rated period, (Caution: The wire inlet hole of electric actuator is
a thread hole, normally set a coiled pipe screws into the thread hole to protect the cable and
ensure integral machine sealing performance, the position and dimension of the thread hole can
see the catalogue of our company. If it is not set the wire inlet, after wiring of product also
should provide suitable sealing measure, if it is not, that would affect its outdoor performance.)
8. Adjustment of G.L.SW
Refer to Fjg.16, 4R-2C is shown in the figure. If another set of 4R-2C is added, then a 4R-4Cmechanism is
resulted, so the volume will be increased to the place shown in dotted lines.
In case no special requirements are given and the driving sleeve is in normal rotating direction (right for
valve closed):
ƸThe rotor of row 1 is used to control Valve open position.
ƸThe rotor of row 4 is used to control value close position.
ƸThe rotor of row 2, row 3 are used separately in the processes of open-close and close-open to control
any one position or to provide signal for the end position of valve open or valve close.
ƸThe “Adjusting axle” number (1), (2),(3), and (4) corresponding to the above mentioned rotor are used to
adjust separately the corresponded rotors.
ƸNumber (5) designated “Adjusting screw” is used to control in side gear disengaged or meshing.
8.1 Close position adjusting of valve (adjustment of rotor of “row 4”).
Ensure the phase sequence of power source is identical with the direction “open” and “close” of the valve
before adjusting. If it is not clear whether the phase sequence is right, according to the above 7.5.
Be sure to cut off the power before adjustment.
a. Turn the valve toward close direction manually. Remember the direction of rotation “Adjusting axle” No.
(4), Operate the valve manually to full close position and then stop it. (Carry on the exact adjusting after
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