Bettis Installation Guide: Integrated Control modules QC41, QC42, QC43 | Bettis Manuals & Guides
Installation Guide Bettis Q-Series
APPROVED
DOC.IG.BQC44.1 Rev. 1 February 2017
Installation Guide Integrated Control Modules
QC44 Intrinsically Safe
Bettis Q-Series Installation Guide
February 2017 DOC.IG.BQC44.1 Rev. 1
1 Applicable Control modules:
QC44 - I.S. - Intrinsically Safe
Note:
This QC44 control module can be equipped with
one or two pilot valves:
* One pilot valve is default and suitable for normal
operation of double acting or spring return
actuators.
* Two pilot valves are required for Fail in Last
Position function on double acting actuators.
The enclosures of both Weather Proof and Explosion
Proof / Flame proof modules, have a IP66 or NEMA
4X, ingress protected rating.
2 Before starting
* Actuator must be isolated both pneumatically
and electrically before any (dis)assembly is
begun.
* Installation, adjustment, putting into service,
use, assembly, disassembly and maintenance of
the control module must be done by qualified
personnel.
* Be sure that the actuator is correctly mounted
before connecting air supply and electrical
wiring (see Installation & Operation Manual
Bettis Q-Series Valve Actuator, DOC .IOM.Q.E)
* Check the module label for the right execution
(see figure 2.2)
* Check the type of actuator: single or double
acting (see figure 2.2).
* For mechanical installation of the module see
installation instruction leaflet DOC.BQC4.MTI.1,
as shipped with the module.
2.1 Intended use
The Bettis Q-Series actuator is an integrated
concept for the automation of quarter turn valves,
dampers or other quarter turn applications. It
consists of two basic parts (see figure 2.1):
1. Pneumatic actuator
2. Control Module
The control module allows operation of the
actuator and supplies position feedback signals.
1
2
Fig. 2.1 Check proper mounting before connecting air
supply and electrical wiring.
2
Control Module Type Label =
QC44..P1.. = Intrinsically Safe
Actuator Type Label =
QS xxxx = Single acting (Spring Return)
QD xxxx = Double acting
Fig. 2.2 Identification
Installation Guide Bettis Q-Series
DOC.IG.BQC44.1 Rev. 1 February 2017
2.2 Mechanical alignment and mounting of
the control module
The control module is equipped with an alignmentedge on top of the module. This allows easy
alignment and mounting of the control module on
to the actuator housing.
Procedure: (see gure 2.3)
1. First take care that both mating faces from the
actuator and control module are clean and free
of dirt.
2. Check if the module has the required function
3. Remove the transparent film from the control
module.
4. Ensure seals are placed correctly.
5. Level the screws with the surface.
6. Place the alignment-edge (1) of the control
module at the top of the pneumatic interface.
7. Flip the module down taking care that the IPT
Probe (see fig 5; nr.2) on the actuator fits in the
mating hole on the control module and loosely
place the screws.
8. Tighten screws according force in sequence.
Tightening moments
The Control Module should be fastened by using
an Allen key and applying the following tightening
moments:
- Allen Key No 5: 6.1 to 6.6 Nm
(54 - 58.4 In.lbs)
Alignment-edge
Alignment-edge
IPT probe
Fig. 2.3 Alignment and mounting of control
module to actuator
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Bettis Q-Series Installation Guide
February 2017 DOC.IG.BQC44.1 Rev. 1
3 Pneumatic connections
IMPORTANT
Single acting
1 The actuator/valve combination can move
after connecting the air supply.
2 Ensure that the QC4x control modules are
mounted properly to the actuator to achieve
good functioning and the required ingress
protection, before connecting the air supply.
3 Check that the maximum supply pressure
P
= 8bar/116Psi
max
4 Be sure that the minimum required supply
pressure for the application is available at the
actuator.
5 Take appropriate measures to prevent
condensation or moisture to entering the
actuator or the control module. Condensation
or moisture can damage these components
and can result in failures.
6 The exhaust ports Ra and Rb on the module
(see gure 3.1) are shipped from the factory
with transport protection.
* If ingress protection IP66 or NEMA 4X is
required, appropriate connections must be
used in exhaust ports Ra & Rb.
3.1 Operating media :
* Air or inert gasses.
* Air filtered at 50 micron without condensate.
* Dew point at -20˚C.
* For subzero applications take appropriate
measures.
3.2 Single acting (spring return) or Double
acting actuator :
1 Remove the transport sticker from the air supply
(Ps).
2 Connect air supply to port (Ps).
Control
Module cover
Double acting
Fig. 3.1 Pneumatic connections
Ra
Ps
1/4” BSP or
1/4” NPT
Ra
Rb
Ps
1/4” BSP or
1/4” NPT
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Installation Guide Bettis Q-Series
DOC.IG.BQC44.1 Rev. 1 February 2017
4 Electric Connections
The QC44 Intrinsically Safe Control Module contains
a pilot valve for controlling the actuator and
switches for position feedback.
WARNING:
* If the Control Module is used in a manner not
specied by the manufacturer, the protection
provided by the equipment may be impaired.
* If required, mount earth wire (1) between top
(2) and stainless steel washer (3) of earth wire
connection (see gure 4.2).
* Use and mount cable glands as required by
national or local legislation.
* If IP66 or NEMA 4X ingress protection is
required, then the electrical entries must be
tted with devices rated IP66 or NEMA 4X.
Electrical safety requirements:
Use In- and outdoor.
Altitude
Maximum relative humidity
Mains supply
fluctuation
Over voltage
category
Pollution degree
Temperature see table 4.1
Operating full power available
up to 2000 meter (6000 feet).
80% for temperatures up to 31°C
(87.8°F) decreasing linearly to
50% relative humidity at 40°C
(104°F).
up to ±10% of nominal voltage
II
2 (3 when the cover remains
closed)
Caution! :
Risk of electric shock
* Installation, adjustment, putting into service,
use, assembly, disassembly and maintenance
of the control module is strictly reserved to
qualied personnel.
* Do not attempt to install or repair any electric
device without shutting off incoming power.
Terminals
Lockable
Module cover
Electrical entries:
3/4”NPT
or M20
1/2”NPT
or M20
Switch terminals
Control Module
Type Label
Pilot valve
terminals
Option: Manual
control
Option: Additional
manual control for
“Fail in Last Position”
Fig. 4.1 Terminal connections behind cover.
Fig. 4.2 Earth wire connection
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Bettis Q-Series Installation Guide
February 2017 DOC.IG.BQC44.1 Rev. 1
4.1 Connecting Pilot valve(s)
The Control Module can be equipped with one or
two pilot valves:
* One pilot valve is default and suitable for normal
operation of double acting or spring return
actuators
* Two pilot valves are required for Fail in Last
Position for double acting actuators.
IMPORTANT
For hazardous area installations see instructions in
Chapter 11.
1. Before connecting the pilot valve, check the
voltage on the control module label.
2 Remove control module cover (see figure 4.1).
3 Guide the cable(s) through the electrical
entry(ies).
- Use and mount cable glands as required by
national or local legislation.
4 For normal operation, make the electrical
connections as shown in figure 4.3.
For double acting actuators with Fail in
Last Position function, make the electrical
connections as shown in figure 4.4
5 Mount the control module cover to the housing
(see figure 4.1) or continue with chapter 5. Take
care that the cover seal is in place to comply to
dust and water tightness according to IP66 or
NEMA4X.
6 Lock the cover in position by turning the lock
screw in, until it blocks.
4.1.1 Tools
Table 4.1 Tool table
For terminals Screw driver 0.6 x 3.5
Cover lock screw Allen key nr 2
4.1.2 Typical functional ratings Pilot Valve
The pilot valve inside the Control Module sends the
actuator to its open or closed position.
IMPORTANT
The below mentioned typical functional ratings are
applicable for non-hazardous areas.
Table 4.2 Typical functional ratings Pilot Valve
Voltage Turn on V 16.4 ... 28
Turn off V 5.7
Current Turn on mA 25mA±10%
Turn off mA 7
Coil Resistance = 563 (Ta + 234 + 10)
254
0.5W
Cable range:
0.2 - 2.5mm2 or
30-12AWG
Fig. 4.3 Default Pilot valve wiring connections
0.5W
Cable range:
0.2 - 2.5mm2 or
30-12AWG
Fig. 4.4 Pilot valve wiring connections for
Fail in Last Position
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Installation Guide Bettis Q-Series
-3° 15° 75° 93°
0° 90°
DOC.IG.BQC44.1 Rev. 1 February 2017
4.2 Connecting Mechanical Feedback switches
IMPORTANT
The below mentioned typical switch specifications
are applicable for non-hazardous areas.
1. Before connecting the switches, check the
model code on the Control Module label.
QCXX.xxxMxx = Mechanical switches
QCXX.xxxGxx = Mechanical switches
(gold plated)
2 Guide the cable(s) through the electrical
entry(ies).
- Use and mount cable glands as required by
national or local legislation.
3. Make connections as shown in figure 4.6 and
table 4.3/4.4
4. Mount the Control Module cover. Take care that
the cover seal is in place to comply to dust and
water tightness according to IP66 or NEMA4X.
IMPORTANT
For hazardous area installations see instructions in
Chapter 11.
Table 4.3 Mechanical switches
Option code M
Option code G (gold contacts)
Typ e Mechanical
Voltage M: 277 VAC or 250VDC (maximum)
G: 125 VAC or 30VDC (maximum)
Contacts NO and NC
Temperature See table 4.1
Notes:
1. The mechanical (M-type) switches are rated for
3 A with inductive load.
2 The mechanical (G-type) switches have gold
contacts. For applications where the benefits
of gold contacts are required, the maximum
current is 0.1 A.
Table 4. 4 Maximum currents mechanical switches
Switch voltage M type switch G type switch
125 VAC 10 A (3 A1) 0.1 A
2
250 VAC 10 A (3 A1) 30 VDC 0.5 A 0.1 A
2
125 VDC 0.5 A 250 VDC 0.25 A -
Contact Switch signal and adjustable
Normally
Open
Contacts
Switch
operation
Switched
Unswitched
Signal
switch range
Close
switch
Rotation
Open
Switch
Fig 4.5 Adjustable switch range and factory settings
Wiring diagram:
- M = Mechanical
- G = Mechanical, gold contacts
Open Close
Cable range : 0.2 - 2.5mm2 or 30-12AWG
1 Wiring diagram shown, is applicable for actuators with
assembly code “CW”. For actuators with assembly code “CC”
(reverse acting) the “Open” and “Closed” switch connections
are also reversed.
2 Wiring diagram is shown in the actuators mid-stroke position.
Fig 4.6 Wiring diagram mechanical switches
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