Aalborg SMV User manual

OPERATING MANUAL
SMV
Stepping Motor Valve
Technical Data Sheet No. TD0305M Rev. F
Date of Issue: April 2021
aalborg
20 CORPORATE DRIVE =ORANGEBURG, NY 10962 =PHONE: [phone] =FAX: [phone]
e-mail: [email protected] =toll free in usa or canada: 1.800.866.3837 =web site: www.aalborg.com
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CAUTION:
This product is not intended to be used in life support applications!
CAUTION:
K-Factors at best are only an approximation.
K-Factors should not be used in applications that require accuracy
better than +/- 5 to 10%.
Aalborg®reserves the right to make changes to information and
specifications in this manual without notice.

TABLE OF CONTENTS
1. UNPACKING THE SMV Motorized Valve....................
1.1 Inspect Package for External Damage.............................................
1.2 Unpack the Motorized Valve............................................................
1.3 Returning Merchandise for Repair...................................................
2. INSTALLATION..........................................................................
2.1 Primary Gas Connections.................................................................
2.2 Electrical Connections....................................................................
3. SPECIFICATIONS.....................................................................
3.1 CE Compliance................................................................................
4. OPERATING INSTRUCTIONS..............................................
4.1 Preparation and Warm Up...............................................................
4.2 Valve OFF Control (Open Collector NPN Compatible)....................
4.3 Valve Purge/Open.............................................................................
5. TROUBLESHOOTING.............................................................
5.1 Common Conditions.........................................................................
5.2 Troubleshooting Guide.....................................................................
5.3 Technical Assistance.........................................................................
APPENDIX 1 DIMENSIONAL DRAWINGS.........................
APPENDIX 2 WARRANTY........................................................
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1. UNPACKING THE SMV MOTORIZED VALVE
1.1 Inspect Package for External Damage
Your SMV Motorized Valve was carefully packed in a sturdy cardboard
carton, with anti-static cushioning materials to withstand shipping shock.
Upon receipt, inspect the package for possible external damage. In case
of external damage to the package contact the shipping company imme-
diately.
1.2 Unpack the Motorized Valve
Open the carton carefully from the top and inspect for any sign of con-
cealed shipping damage. In addition to contacting the shipping carrier
please forward a copy of any damage report to your distributor or
Aalborg®directly.
When unpacking the instrument please make sure that you have all the
items indicated on the Packing List. Please report any shortages promptly.
1.3 Returning Merchandise for Repair
Please contact the customer service representative of your distributor or
Aalborg®if you purchased your Motorized Valve directly, and request a
Return Authorization Number (RAN). Equipment returned without an
RAN will not be accepted. Aalborg®reserves the right to charge a fee to
the customer for equipment returned under warranty claims if the instru-
ments are tested to be free from warrantied defects.
Shipping charges are borne by the customer. Items returned "collect" will
not be accepted!
It is mandatory that any equipment returned for servicing be purged and
neutralized of any dangerous contents including but not limited to toxic,
bacterially infectious, corrosive or radioactive substances. No work shall
be performed on a returned product unless the customer submits a fully
executed, signed SAFETY CERTIFICATE. Please request form from the
Service Manager.
1

2. INSTALLATION
2.1 Primary Gas Connections
Prior to connecting gas lines inspect all parts of the piping system includ-
ing ferrules and fittings for dust or other contaminants. Be sure to observe
the direction of gas flow as indicated by the arrow on the front of the
meter when connecting the gas system to be monitored.
Insert tubing into the compression fittings until the ends of the properly
sized tubing home flush against the shoulders of the fittings.
Compression fittings are to be tightened according to the manufacturer's
instructions to one and one quarter turns. Avoid over tightening which will
seriously damage fittings.
SMV Motorized Valves are supplied with standard 3/8 inch (SMV-20), 1/2
inch (SMV-30), or 3/4 inch (SMV-40) inlet and outlet compression fittings.
Using a Helium Leak Detector or other equivalent method perform a thor-
ough leak test of the entire system. (All SMV's are checked prior to ship-
ment for leakage within stated limits. See specifications in this manual.)
2.2 Electrical Connections
The motorized valve requires a +12VDC or optional 24VDC supply with
a minimum current rating of 800 mA. Operating power and valve control
signals are supplied via the 9-pin "D" connector located at the side of the
valve. For normal operating the motorized valve requires at least two con-
trol signals:
lDirection (12V CMOS logic level, pin 8 on the 9-pin "D" connector)
lSpeed (0-2.5 VDC analog signal, pin 4 on the 9-pin "D" connector)
When direction is LOW (GND) valve goes down (closes), when direction
is HIGH valve goes up (opens). The "speed" voltage on pin 4 determines
how quickly the valve will operate. The signal amplitude for "speed" con-
trol signal must remain within the limits of 0 to +2.5 VDC.
It may be necessary to override "direction" and "speed" signals with a
preset (2.75 VDC) speed control signal. This can be accomplished with
valve CLOSE and PURGE control signals (open collector NPN compati-
ble). In order to CLOSE valve pin 3 on the 9-pin "D" connector has to be
connected to GND (pin 2). A GREEN light on the top of the valve will indi-
cate a CLOSE valve condition. In order to PURGE valve pin 7 on the 9-
pin "D" connector has to be connected to GND (pin 2). A RED light on
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the top of the valve will indicate a fully OPEN valve condition.
During normal operation the valve remains in the last position as it is de-
energized. After powering up, the valve will be automatically closed with-
in the first 10 seconds and after that resumes control operation.
FIG.b-1 SMV 9-PIN “D” CONNECTOR CONFIGURATION
WARNING: DO NOT CONNECT 24 Vdc POWER SUPPLY UNLESS YOUR
SMV VALVE WAS ORDERED AND CONFIGURED FOR 24Vdc VOLTAGE
(SEE POWER REQUIREMENTS LABEL). DO NOT APPLY TO THE
DIRECTION CONTROL SIGNAL (PIN 8) VOLTAGE MORE THAN 12 Vdc
Important Notes:
In general, "D" Connector numbering patterns are standardized. There
are, however, some connectors with nonconforming patterns and the
numbering sequence on your mating connector may or may not coincide
with the numbering sequence shown in our pin configuration table above.
It is imperative that you match the appropriate wires in accordance with
the correct sequence regardless of the particular numbers displayed on
your mating connector.
Make sure power is OFF when connecting or disconnecting any cables in
the system.
The power input is protected by a 1600mA M (medium time-lag) reset-
table fuse. If a shorting condition or polarity reversal occurs, the fuse will
cut power to the valve circuit. Disconnect the power to the unit, remove
the faulty condition, and reconnect the power.
3
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,
PIN FUNCTION
1(unassigned).
2Common, Power Supply Minus.
3Valve Off Control (12V CMOS Low active).
4Speed control signal (analog 0-2.5 Vdc).
5(unassigned).
6Common for Speed control.
7Valve PURGE control (12V CMOS Low Active).
8Direction control signal (digital 12Vdc CMOS logic).
9+12 Vdc (+24Vdc optional) Power Supply Plus.

The fuse will reset once the faulty condition has been removed.
Use of the SMV Motorized Valve in a manner other than that specified
in this manual or in writing from Aalborg®, may impair the protection
provided by the equipment.
3. SPECIFICATIONS
MATERIALS OF CONSTRUCTION:
ALUMINUM MODELS: Aluminum housings and valve blocks, Viton®O-Rings,
PFA closing pins.
STAINLESS/PTFE MODELS: 316 stainless steel valve blocks, PTFE-lined
Aluminum Housing blocks, Viton®O-Rings, and PFA closing pins.
MAXIMUM FLOW RATES: 1000 sL/min (air), 28 L/min (water).
CONNECTIONS: 3/8", 1/2", compression and 3/4" FNPT.
ELECTRICAL CONNECTIONS: 9-pin "D" connector, located at the side of the
valve.
POWER INPUT: +12Vdc @ 800mA standard or optional +24Vdc @ 600mA.
Power input is protected by 1600mA resetable fuse.
DIRECTIONAL CONTROL SIGNAL: 12Vdc CMOS compatible logic signal (10K
input impedance). UP: Logic High (>7.5Vdc <= 12Vdc). Do not apply more than
12 Vdc. DOWN: Logic Low (<2.3Vdc).
SPEED CONTROL SIGNAL: Analog 0 to 2.5Vdc (100K input impedance).
ON/OFF OVERRIDE: 12Vdc CMOS logic low level to pins 7 and 3 (10K input
impendence).
RESPONSE TIME: 100ms time constant.
DIFFERENTIAL PRESSURES: 700 to 1000 mbars (10 to 15 psid).
MAXIMUM OPERATING PRESSURE: 500 psig (35 bars).
MAXIMUM DIFFERENTIAL PRESSURE: 50 psig (3.45 bars).
ENVIRONMENTAL (PER IEC 664): Installation Level II; Pollution Degree II.
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GAS AND AMBIENT TEMPERATURE: 32 FF to 122 FF (0 FC to 50 FC).
LEAK INTEGRITY: 1 x 10-7 sccs He max to the outside environment.
WETTED MATERIALS:
SMV20/SMV30/SMV40: Anodized aluminum, brass, and 316 stainless
steel with VITON®O-rings seals; BUNA-N®, EPR or KALREZ®O-rings are
optional.
SMV20-S/SMV30-S/SMV40-S: 316 stainless steel with VITON®O-rings
seals; BUNA-N®, EPR or KALREZ®O-rings are optional.
Aalborg®makes no expressed or implied guarantees of corrosion resist-
ance of Motorized Valves as pertains to different flow media reacting with
components of valves. It is the customers' sole responsibility to select the
model suitable for a particular gas based on the fluid contacting (wetted)
materials offered in the different models.
3.1 CE Compliance
Any model SMV bearing a CE marking on it, is in compliance with the
below stated test standards currently accepted.
EMC Compliance with 89/336/EEC as amended;
Emission Standard: EN 55011:1991, Group 1, Class B
Immunity Standard: EN 55082 1:1992
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MODEL
NUMBERS CONSTRUCTION
MAXIMUM FLOW RATE
(at 20 psi diff. pressure, 70 FF)
Cv CONNECTIONS ORIFICE
SIZE
AIR WATER
sL/min scfh L/min GPM
SMV20-A Aluminum 200 424 5.6 1.48 0.336 3/8" Compression
Fitting, Brass 3/8"
SMV20-S 316 Stainless
Steel/PTFE 200 424 5.6 1.48 0.336
3/8" Compression
Fitting,
Stainless Steel
3/8"
SMV30-A Aluminum 500 1060 14.2 3.75 0.855 3/8" Compression
Fitting, Brass 3/8"
SMV30-S 316 Stainless
Steel/PTFE 500 1060 14.2 3.75 0.855
3/8" Compression
Fitting,
Stainless Steel
3/8"
SMV40-A Aluminum 1000 2119 28 7.4 1.735 3/4" FNPT 1/2"
SMV40-S 316 Stainless
Steel/PTFE 1000 2119 28 7.4 1.735 3/4" FNPT 1/2"
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TABLE I FLOW CONFIGURATIONS
4. OPERATING INSTRUCTIONS
The SMV motorized valve requires a +12VDC or optional 24VDC power
supply with a minimum current rating of 800 mA. The operating power
and valve control signals are supplied via the 9-pin "D" connector locat-
ed at the side of the valve.
The SMV motorized valve has three modes of operation: Valve Active
(Auto), Valve OFF Control and Valve Purge (Open).
4.1 Valve Active (Auto)
For normal operating in Auto mode the motorized valve requires at
least two control signals:

lDirection (12Vdc CMOS compatible logic level, pin 8 on the 9-pin "D" connector)
lSpeed (0-2.5 VDC analog signal, pin 4 on the 9-pin "D" connector)
When direction is LOW (GND) valve goes down (closes), when direction
is HIGH valve goes up (opens). The "speed" voltage on pin 4 determines
how quickly the valve will operate. The signal amplitude for "speed" con-
trol signal must remain within the limits of 0 to +2.5 VDC. The 2.5 Vdc
input signal corresponds to approximately 525 (±10%) steps per second.
With resolution of the stepping motor of 0.0000625"/step (in factory
default half stem mode) it results in a maximum speed about
0.0328"/sec. Valve travel distance from Home "Closed" to Home
"Opened" position is about 0.25 (+/-10%)" and it takes about 7 seconds
at speed signal equal to 2.5Vdc.
4.2 Valve OFF Control
(Open Collector NPN Compatible)
It may be necessary or desirable to set the flow and maintain that setting
while being able to turn the flow control valve off and on again. Closing
of the valve (without changing the "speed"and "direction" control signals)
can be accomplished by connecting pin 3 of the 9-pin "D" connector to
COMMON ( power ground). The Motorized valve will be given the com-
mand to close indicated by a green light on top of the unit).
Conversely, when the connection is left open or pin 3 remains unconnect-
ed the valve remains active (executes "speed"and "direction" control sig-
nals). The valve will remain active when the VALVE OFF pin remains
"floating".
This feature is compatible with open collector NPN transistor switches, as
found in DC output ports of programmable controllers and similar
devices.
The simplest means for utilizing the VALVE OFF control feature, is to con-
nect a toggle switch between the COMMON and VALVE OFF pins of the
SMV valve.
4.3 Valve Purge
At times, it may be necessary to purge the flow system with a neutraliz-
ing gas such as pure dry nitrogen. The SMV valve is capable of a full
open condition for the valve, regardless of setpoint conditions.
Connecting the PURGE pin (pin 7 on 9 pin "D" connector) to ground will
fully open the valve.
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A red light on top of the valve will indicate an OPEN valve condition,
normal for flow conditions.
Please note that the valve stays OPEN even if power is no longer
applied. To CLOSE the Motorized Control Valve, connect pins 3 and 2.
5. TROUBLESHOOTING
5.1 Common Conditions
Your SMV motorized valve was thoroughly checked at numerous quality
control points during and after manufacturing and assembly operations.
It was carefully packed to prevent damage during shipment. Should you
feel that the instrument is not functioning properly please check for the fol-
lowing common conditions first:
=Are all cables connected correctly?
=Are there any leaks in the installation?
=Is the power supply correctly selected according to requirements?
When several meters are used a power supply with appropriate cur
rent rating should be selected.
=Were the connector pinouts matched properly? When interchanging
with other manufacturers' equipment, cables and connectors must
be carefully wired for correct pin configurations.
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5.2 Troubleshooting Guide
For best results it is recommended that instruments are returned to the
factory for servicing. See section 1.3 for return procedures.
5.3 Technical Assistance
Aalborg®Instruments will provide technical assistance over the phone to
qualified repair personnel. Please call our Technical Assistance at 800-
866-3837. Please have your Serial Number and Model Number ready
when you call.
INDICATION LIKELY REASON REMEDY
no response to
"speed" and
"direction"
control signals
inadequate gas
pressure
apply appropriate gas
pressure
cable or connector
malfunction
check cables and all
connections or replace
valve out of adjustment return to factory for
repair / replacement
valve does not work
in OPEN position
incorrect valve
adjustment
return to factory for
repair / replacement
pc board defect return to factory for
repair / replacement
cable or connectors
malfunction
check cable and
connectors or replace
valve does not work
in CLOSE position
incorrect valve
adjustment
return to factory for
repair / replacement
pc board defect return to factory for
repair / replacement
cable or connectors
malfunction
check cable and
connectors or replace
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APPENDIX 1
SMV MOTORIZED VALVE
SMV20
control valve
6.425"
163 mm
1.125"
29 mm
3/8"
compression
fitting
3.000
76.2 mm
5.16"
131 mm
depth 2.000
50.8mm

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SMV30
control valve
6.800"
173 mm
3.000
76.2 mm
1/2"
compression
fittings
1.500"
38.1 mm
depth 2.00
50.8 mm
SMV40
control valve
6.800"
173 mm
3.000
76.2 mm
3/4" FNPT
1.500"
38.1 mm
depth 2.000
50.8 mm

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APPENDIX 2
WARRANTY
NOTE: Follow Return Procedures In Section 1.3.
Aalborg®SMV motorized valves are warranted against parts and
workmanship for a period of one year from the date of purchase. It
is assumed that equipment selected by the customer is construct-
ed of materials compatible with gases or liquids used. Proper
selection is the responsibility of the customer. It is understood that
gases under pressure present inherent hazards to the user and to
equipment, and it is deemed the responsibility of the customer that
only operators with basic knowledge of the equipment and its limi-
tations are permitted to control and operate the equipment covered
by this warranty. Anything to the contrary will automatically void the
liability of Aalborg®and the provisions of this warranty. Defective
products will be repaired or replaced solely at the discretion of
Aalborg®at no charge. Shipping charges are to be borne by the
customer. This warranty is void if the equipment is damaged by
accident or misuse, or has been repaired or modified by anyone
other than Aalborg®or factory authorized service facility. This war-
ranty defines the obligation of Aalborg®and no other warranties
expressed or implied are recognized.