Proportion-Air QB1T Installation and operating instructions

1/5 QBT Installation Guide - 3/22/2016 | SSS
DESCRIPTION / IDENTIFICATION
The QB series valve uses Proportion- Air closed loop technology for
Pressure control. It gives an output pressure proportional to an
electrical command signal input.
The QB1 is a complete closed loop servo system consisting of
valves, manifold, housing and electronic controls. Pressure is
controlled by the use of two solenoid valves. One valve functions as
inlet control, the other as exhaust. The pressure output is measured
by a pressure transducer internal to the QB1 and provides a
feedback signal to the electronic controls. This feedback signal is
compared with the command signal input. A difference between the
two signals causes one of the solenoid valves to open, allowing flow
in or out of the system. Accurate pressure is maintained by
controlling these two valves.
The QB2 is similar to the QB1 but uses a double loop control
scheme. In addition to the internal pressure transducer, the QB2
receives an electrical signal from an external sensing device. This
primary feedback signal is compared against the command signal
input. This comparison is then summed with the internal pressure
transducer signal. The gain of the circuit is such that priority is given
to the external feedback signal. A difference between the command
signal and the feedback signal causes one of the solenoid valves to
be activated.
A monitor output is provided for the system measurement. All QB
valves come standard with an analog voltage monitor output.
QB1 monitor output is an amplified signal from the internal pressure
transducer. QB2 monitor output is a buffered signal from the primary
external transducer connected to the QB2.
For QB valves with model number TFEE or TFIE the monitor output
is voltage. The monitor output is analog current, if the valve model
number is TFEC or TFIC. See ordering information for further
details.
INSTALLATION
1. Apply a small amount of anaerobic sealant (provided) to the
male threads of the in-line filter supplied with valve.
CAUTION: USE ONLY THE THREAD SEALANT PROVIDED.
OTHER SEALANTS SUCH AS PTFE TAPE AND PIPE DOPE
CAN MIGRATE INTO THE FLUID SYSTEM CAUSING
FAILURES.
2. Install the in-line filter into the port labeled IN on QB valve.
3. Connect supply line to the in-line filter port. Connect device
being controlled to port labeled OUT on QB valve.
3. For vacuum units, the vacuum supply should be connected into
the bottom exhaust port.
4. Mount valve accordingly.
5. The valve can be mounted in any position without affecting
performance. Mounting bracket QBT-01 (ordered separately)
can be used to attach valve to a panel or wall surface.
6. Proceed with electrical connections.
INSTALLATION & MAINTENANCE INSTRUCTIONS
QB2T
with Digital Display
QB1T
† Pressure ranges are customer specified. Output pressures other
than 100% are available. ‡ Others available
ELECTRICAL
SUPPLY VOLTAGE 15-24 VDC
SUPPLY CURRENT 250 mA
COMMAND SIGNAL 0-10 VDC | 4-20 mA
COMMAND SIGNAL IMPEDANCE VDC=4.75 KΩ | Current=100 Ω
ANALOG VOLTAGE MONITOR 0-10 VDC
ANALOG CURRENT MONITOR 4-20 mA Sinking (sourcing opt)
MECHANICAL
PRESSURE RANGES Vacuum - 175 psig
(760 mmHg (Vac) - 12 Bar)
OUTPUT PRESSURE† 0-100% of range
FLOW RATE 1.2 SCFM @ 100 psig inlet
(34 L/min @ 6.89 Bar)
Cv CAPACITY 0.04
Min CLOSED END VOLUME 1 in3
PORT SIZE 1/8” NPT
FILTRATION RECOMMENDED 40 Micron (included)
LINEARITY/HYSTERESIS <±0.15% F.S. BFSL
REPEATABILITY <±0.02% F.S.
ACCURACY <±0.2% F.S.
WETTED PARTS ‡
ELASTOMERS Fluorocarbon
MANIFOLD Brass
VALVES Nickel Plated Brass
PRESSURE TRANSDUCER Silicon, Aluminum
PHYSICAL
OPERATING TEMERPATURE 32-158°F (0-70°C)
WEIGHT 1.02 lb. (0.50 Kg)
PROTECTION RATING IP65
HOUSING Aluminum
FINISH Black Anodized
SPECIFICATIONS

2/5 QBT Installation Guide - 3/22/2016 | SSS
RE-CALIBRATION PROCEDURE
All QB control valves come calibrated from the factory by trained
personnel using precision calibration equipment. The QB valve is a
closed loop control valve using a precision electronic pressure
sensor. Typical drift is less than 1% over the life of the product. If
your QB valve appears to be out of calibration by more than 1%, it is
not likely to be QB. Check the system for plumbing leakage, wiring
and electronic signal levels. Verify the accuracy of your measuring
equipment before re-calibrating. Consult factory if you have any
questions or require assistance. If the QB valve needs re-
calibration, use the procedure described below:
QB1 VALVES
1. Identify the inputs and outputs of the valve using the model
number of the valve, calibration card included with the valve, and
the information provided in this sheet.
2. Connect a precision measuring gage or pressure transducer to
the OUT port of the QB.
NOTE: THERE MUST BE A CLOSED VOLUME OF AT LEAST
1 CU. IN. (17 CC) BETWEEN THE VALVE OUTLET AND THE
MEASURING DEVICE FOR THE VALVE TO BE STABLE.
3. Connect the correct supply source to the IN port of the QB,
making sure the pressure does not exceed the rating for the
valve (See Table 1).
4. Locate the plastic calibration access cap on top of the QB valve
and completely remove it. Located underneath are two
adjustment trim pots, Zero “Z” and Span “S”. See figure 1 for
pots location.
5. NOTE: Only use this step if your device is totally out of
calibration. If it is slightly out of calibration, omit this step and
move on to paragraph 6. Using a small screwdriver, turn both
trim pots 15 turns clockwise. Then turn both trim pots 7 turns
counterclockwise. This will put the QB roughly at mid-scale.
6. Make correct electrical connections as noted. Make sure there is
a proper meter in place to measure the command input to the
QB.
7. Set the electrical command input to MAXIMUM value.
8. Adjust the SPAN pot until MAXIMUM desired pressure is reached
(clockwise increases pressure).
9. Set the electrical command input to MINIMUM value.
10.Adjust the ZERO pot until MINIMUM desired pressure is reached
(clockwise increases pressure).
11.Repeat ZERO and SPAN adjustments, which interact slightly,
until QB1 valve is calibrated back to proper range. Step 6 - 9.
12.Replace calibration access cap.
QB2 VALVES
This section assumes there is a properly scaled and
calibrated transducer for use as 2nd loop feedback signal.
1. Follow, in order, steps 1-5 as noted in the section titled QB1
VALVES .
2. Make correct electrical connections as noted. Make sure there
is a proper meter in place to measure the command input to the
QB2. Make sure the 2nd loop signal is connected.
3. Set the electrical command input to MAXIMUM value.
4. Adjust the SPAN pot until MAXIMUM desired pressure is reached
(clockwise increases pressure).
5. Set the electrical command input to MINIMUM value.
6. Adjust the ZERO pot until MINIMUM desired pressure is reached
(clockwise increases pressure).
7. Repeat ZERO and SPAN adjustments, which interact slightly,
until QB2 valve is calibrated back to proper range. Steps 3 - 6.
8. Replace calibration access cap.
ELECTRICAL CONNECTIONS
1. Turn off all power to valve.
2. Identify the valve’s command input and analog output using the calibra-
tion card included in the package and the ordering information section
on the last page of this sheet.
3. Proceed to the appropriate section corresponding to the type of valve
being installed.
NOTE: ALL COLOR CODES RELATE TO QB'S ORDERED
FROM THE FACTORY WITH WIRE LEADS.
VOLTAGE COMMAND VALVES
All voltage command QB's use common mode voltage, meaning the DC
Common pin (Pin 1) is the common reference for both power and command.
Pin 1 is used as both the command signal common and power supply
common. The following diagram shows the proper connections.
CURRENT COMMAND VALVES
All current command QB's use a differential current loop scheme (not
isolated), meaning current flow is from Pin 4 to Pin 2 on the QB valve. Some
applications may require the common of the power supply that provides loop
power for the 4-20mA command to be tied to power supply common. The
following diagram shows the correct connection for conventional current flow.
PIN 4 {WHITE}
0-10 COMMAND (+)
PIN 1 {GREEN}
DC COMMON (-)
(POWER & COMMAND)
PIN 6 {BLACK}
DC POWER (+)
VOLTAGE MONITOR (EE OR IE)
Use the following wiring diagram for QB valves with a voltage monitor output.
PIN 1 {GREEN}
DC COMMON (-)
(POWER & COMMAND) METER
-
+
PIN 5 {RED}
0-10V MONITOR (+)
V
CURRENT MONITOR SINKING(EC OR IC)
Use the following wiring diagram for QB valves with a current sinking monitor
output.
-
+
PIN 6 {BLACK}
DC POWER (+)
PIN 5 {RED}
4-20mA MONITOR (-)
MA METER
PIN 2 {BLUE}
4-20MA COMMAND (-)
PIN 4 {WHITE}
4-20MA COMMAND (+)
PIN 1 {GREEN}
DC COMMON (-)
(POWER & COMMAND)
PIN 6 {BLACK}
DC POWER (+)
Figure 1

3/5 QBT Installation Guide - 3/22/2016 | SSS
DIMENSIONS in [mm]
MOUNTING BRACKET
QB2 SECOND LOOP CONNECTIONS
All QB2 valves are designed to accept a 0-10 volt second loop input signal,
unless ordered with special option C2 (4-20 mA second loop input).
Reference the following wiring diagrams for details.
Standard QB2 valves
Second loop signal is wired into the main electrical connector.
PIN 3 {BROWN}
2ND LOOP IN (-)
PIN 6 {BLACK}
DC POWER (+)
3-wire
transducer
w/ 0-10 Vdc
output
PIN 1 {GREEN}
DC COMMON (-)
(POWER & COMMAND
PIN 6 {BLACK}
DC POWER (+)
PIN 1 {GREEN}
DC COMMON (-)
METER
-
+
PIN 5 {RED}
SIGNAL OUT
MA
CURRENT SOURCING MONITOR (ES OR TS)
QB2-C2 option valves
PIN 3 {BROWN}
2ND LOOP IN (-)
PIN 6 {BLACK}
DC POWER (+)
2-wire
transducer
w/ 4-20 mA
output
QB2-3D OPTION VALVES
Second loop signal is plugged into auxiliary receptacle on opposite side.
QB2-3D
Proportion-Air
DSY pressure
transducer
H23 COLOR CODE
RECEPTACLE
WHITE SIGNAL IN
BLACK DC POWER
GREEN DC COMMON
RATED INLET PRESSURE FOR STANDARD QBS VALVES
TABLE 1
MAX. calibrated pressure: Max. inlet pressure:
Vacuum only 5 PSIG
Vacuum up to 10 PSIG 15 PSIG
10.1 up to 30 PSIG 35 PSIG
31 up to 100 PSIG 110 PSIG
101 up to 150 PSIG 165 PSIG

4/5 QBT Installation Guide - 3/22/2016 | SSS
Safety Precauons
Please read all of the following Safety Precauons before installing or
operang any Proporon-Air, Inc. equipment or accessories. To conrm safety,
be sure to observe ‘ISO 4414: Pneumac Fluid Power - General rules relang to
systems’ and other safety pracces.
Improper operaon could result in serious injury to persons or loss of life!
1. PRODUCT COMPATIBILITY
Proporon-Air, Inc. products and accessories are for use in industrial pneumac
applicaons with compressed air media. The compability of the equipment is the
responsibility of the end user. Product performance and safety are the responsibility of
the person who determined the compability of the system. Also, this person is
responsible for connuously reviewing the suitability of the products specied for the
system, referencing the latest catalog, installaon manual, Safety Precauons and all
materials related to the product.
2. EMERGENCY SHUTOFF
Proporon-Air, Inc. products cannot be used as an emergency shuto. A redundant safety
system should be installed in the system to prevent serious injury or loss of life.
3. EXPLOSIVE ATMOSPHERES
Products and equipment should not be used where harmful, corrosive or explosive
materials or gases are present. Unless cered, Proporon-Air, Inc. products cannot be
used with ammable gases or in hazardous environments.
4. AIR QUALITY
Clean, dry air is not required for Proporon-Air, Inc. products. However, a 40 micron
parculate lter is recommended to prevent solid contaminaon from entering the
product.
5. TEMPERATURE
Products should be used with a media and ambient environment inside of the specied
temperature range of 32°F to 158°F. Consult factory for expanded temperature ranges.
6. OPERATION
Only trained and cered personnel should operate electronic and pneumac machinery
and equipment. Electronics and pneumacs are very dangerous when handled
incorrectly. All industry standard safety guidelines should be observed.
7. SERVICE AND MAINTENANCE
Service and maintenance of machinery and equipment should only be handled by trained
and experienced operators. Inspecon should only be performed aer safety has been
conrmed. Ensure all supply pressure has been exhausted and residual energy
(compressed gas, springs, gravity, etc.) has been released in the enre system prior to
removing equipment for service or maintenance.
Warning
Improper operaon could result in serious injury to persons or damages to equipment!
1. PNEUMATIC CONNECTION
All pipes, pneumac hose and tubing should be free of all contaminaon, debris and chips
prior to installaon. Flush pipes with compressed air to remove any loose parcles.
2. THREAD SEALANT
To prevent product contaminaon, thread tape is not recommended. Instead, a non-
migrang thread sealant is recommended for installaon. Apply sealant a couple threads
from the end of the pipe thread to prevent contaminaon.
3. ELECTRICAL CONNECTION
To prevent electronic damage, all electrical specicaons should be reviewed and all
electrical connecons should be veried prior to operaon.
Exempon from Liability
1. Proporon-Air, Inc. is exempted from any damages resulng from any operaons not
contained within the catalogs and/or instrucon manuals and operaons outside the
range of its product specicaons.
2. Proporon-Air, Inc. is exempted from any damage or loss whatsoever caused by
malfuncons of its products when combined with other devices or soware.
3. Proporon-Air, Inc. and its employees shall be exempted from any damage or loss
resulng from earthquakes, re, third person acons, accidents, intenonal or
unintenonal operator error, product misapplicaon or irregular operang condions.
4. Proporon-Air, Inc. and its employees shall be exempted from any damage or loss,
either direct or indirect, including consequenal damage or loss, claims, proceedings,
demands, costs, expenses, judgments, awards, loss of prots or loss of chance and any
other liability whatsoever including legal expenses and costs, which may be suered or
incurred, whether in tort (including negligence), contract, breach of statutory duty, equity
or otherwise.
Warranty
Proporon-Air, Inc. products are warranted to the original purchaser only against defects in
material or workmanship for one (1) year from the date of manufacture. The extent of
Proporon-Air’s liability under this warranty is limited to repair or replacement of the defecve
unit at Proporon-Air’s opon. Proporon-Air shall have no liability under this warranty where
improper installaon or ltraon occurred.
Cauon