Hansen PXVC-PT User manual

Bulletin PXVC
AUGUST 2018
Specifications, Applications,
Service Instructions & Parts
PXVC
UNIVERSAL CONTROLLER
PXVC-PT, PXVC-DX, PXVC-T,
PXVC-L, PXVC-P, PXVC-CI
INTRODUCTION
Hansen PXVC controllers offer a robust, flexible line
of controllers to meet a variety of application needs.
Primarily, the PXVC is an intelligent single-loop PI
controller designed for use with Hansen Motorized
Control Valves and Pulse Expansion Valves. The PXVC
is ordered pre-configured for the following applications:
• PXVC-PT refrigerant superheat/sub-cooling control
• PXVC-DX single point precision refrigerant superheat/
sub-cooling control
• PXVC-T temperature control
• PXVC-L refrigerant level control
• PXVC-P refrigerant pressure control
• PXVC-CI controller interface for connecting Hansen
pulse expansion valves to external control system.
KEY FEATURES
Highlights
Remote alarm output
Pre-configured temperature and pressure alarms
(Other options available contact factory for information)
Intuitive button interface
Large backlit lcd
Alternate menus to visually monitor set point and sensor
readings
Displays output signal in 10% incremental resolution
All controllers feature a two minute ramp up delay where
the controller reaction speed is slowed down.
ADVANTAGES
1. AC or DC power rated
2. Digital, pulse or analog output
3. User friendly interface
A. Intuitive easy to navigate menu buttons
B. Easy to read multi-character display
I. Ability to monitor set point and sensor values
II. Visual alarm notification
4. Optional remote interlock
5. Plug style terminal block connectors allows for
Quick connections
6. Versatile configuration options
TABLE OF CONTENTS
Introduction ...............................................................1
Key Features ..............................................................1
Applications ...............................................................2
Technical Specifications ............................................2
Advantages ................................................................2
All Models Controller Information ..............................3
Installation .................................................................3
Changing Parameters ................................................6
Model Specific Controller Details ..............................8
PXVC-PT ....................................................................8
PXVC-L .....................................................................11
PXVC-P .....................................................................12
PXVC-T .....................................................................13
PXVC-CI ....................................................................14
PXVC

2
PXVC
AUGUST 2018
APPLICATIONS
1. Superheat Control (PT or DX)
2. Level Control
3. Temperature Control
4. Pressure Control
5. Controller Interface for PXV
TECHNICAL SPECIFICATIONS
1. Connections
a. Power Supply Requirements 24VDC 3A
b. Signal Requirements
c. Output
I. Digital Output 1(Pulse Width) – D24-250VAC 3A Max
II. Digital Output 2 (Alarm) – 24-250VAC 3A Max
III. Analogue – 0-20mA, 0-10VDC
2. Product Certifications
a. CE 2004/108/EC
b. CE 2006/95/EC
c. EN60 730-1
d. EN60 730-2-9
e. EN 60 259 IP30
f. NEMA 1 /IEC 60536 class II
3. General
a. System:
I. Operating temperature range -76F – 250F
II. Refrigerants R717, R22, R134a, R507
b. Ambient Environment (IEC 721-3-3 Class 3K5):
I. operating temperature range 32F to 122F
II. <95%RH (noncondensing)
Inputs
1. Pressure
2. Temperature
3. Interlock (optional)
I. Univeral Input Configured Based on Application
(Pressure, temperature, level, etc)
II. Remote Interlock
Outputs
1. Two Digital (Pulse Width or Binary)
2. One Analogue (4-20mA, 0-20mA, 2-10V or 0-10V)
outputs
Sensors
1. Platinum RTD (PXVC-PT)
2. NTC 10K Thermistor (PXVC-T)
3. PT2 Pressure Transducer 0 – 100 PSIA
(PXVC-PT standard, contact factory for
other pressures)
4. PT3 Pressure Transducer 0-300 PSIA
(PXVC-P standard)
Selection of Control Valves
1. PXV Control Valves Hansen
2. PXV5, PXV15, PXVW60
3. Motorized Control Valves (MCV)
Wiring Diagrams –Refer to pages 7-16 for typical wiring
diagram. Also, refer to www.hantech.com for latest
wiring and support documentation
PXVC UNIVERSAL CONTROLER

3PXVC
AUGUST 2018
PXVC UNIVERSAL CONTROLER
All Models Controller information
INSTALLATION
FIGURE 1.
PXVC (-T,-L,-P,-CI,-DX) PINOUT
FIGURE 2.

PXVC - (PT)
PXVC - T
PXVC - (All
other models)
FIGURE 3.
AO1 UI3 UI1UI2
0...10V
0...20mA
0...10V 0...10V
0...20mA 0...20mA 0...20mA
0...10V
RT or contact RT or contact RT or contact
AO1 UI2 UI1
0...10V
0...20mA
0...20mA
0...20mA
RT or contact
RT or contact
RT or contact
0...10V
AO1 UI2 UI1
0...10V
0...20mA
0...20mA
0...20mA
RT or contact
RT or contact
RT or contact
0...10V
4
PXVC
AUGUST 2018
INSTALLATION:
The PXVC model controllers require careful attention to
the wiring diagrams based on the application to prevent
damage to the equipment. Failure to follow the diagrams
as presented may result in damage to the controller and
voidance of product warranty.
Review the controller specic applications and select the
application based upon your controller and application
needs for additional applications contact factory. Motorized
Control Valve Applications are available in bulletin R649b
WIRING NOTES (refer to controller specic applications
for detailed diagrams):
The controller power pins 1 and 2 accepts 24 volts DC, refer
to Hansen drawing Figure 2 for reference.
INPUTS / OUTPUTS
Digital Output #1 is set up for pulse width operation and
requiring a 24-250VAC 3A power source. The output acts
as a switch, stopping and starting the valve (pins 3 and 4)
Digital Output #2 is setup to be the user alarms and requires
a 24-250VAC 3VA power source. The output acts as a switch,
stopping and starting the electricity ow (pins 5 and 6)
The analog output control signal does not require a power
source and should be connected directly to the Motorized
Control Valve as shown in Figure 2 (pins 7 and 8)
Universal Input #1 must be setup to properly and when
used as an analog (4-20mA) input a 24VDC power source
must be applied to the sensor as indicated in the diagrams
(pins 11 and 12)
(Excludes PXVC-PT) Universal Input #2 must be a continuous
circuit (switch closed) to operate as a remote interlock pins
(13 and 14).
SENSOR INSTALLATION:
Pressure Transducers – Hansen recommends all pressure
transducers to be installed into a gauge valve which is
installed into the pressure port. This line of controller
is designed to work with transducers with a 4-20mA
signal. Pressure transducers are imprecise below -60F,
and standoffs are recommended. It is important that the
pressure transducer is installed as close to the outlet of
the heat exchanger (evaporator, shell and tube, plate and
frame, etc.) as possible to attain a precise reading.
Temperature Sensors – Sensor should be installed as
close to the pressure sensing element as possible (where
applicable), or the outlet of the heat exchanger. Thermal
compound should be used to ensure sensor lag is kept to
a minimum. Immersion wells are highly recommended for
all applications.
Superheat / Temperature Applications – When attempting
to read saturated vapor, intermittent liquid contacting the
sensing element will result in unstable sensor readings,
causing system instability. When operating a system where
liquid is present an immersion well should be used for
precise measurement. The well should be installed so
that it is constantly immersed in the liquid. Plumbing traps
are necessary to stabilize the ow of liquid and reduce
imprecision in the measurement. This is crucial for all
applications dependent on temperature measurements for
liquid or superheat control. Sensors should be installed per
wiring diagrams and as shown on the pipe at the 4’oclock
or 8’clock position as shown in Figure 5. For DX evaporator
setup, and the entire length of the pipe must be insulated.
Other Sensors – Refer to the sensorproduct bulletin
(Pressure and Temp Sensor (HPT) bulletin PT100c,
Techni-Level probes P109, Vari-Level Probes P112)
SETTING UP THE CONTROLLER:
1. Verify jumpers on back of controller are set as follows:
2. Connect sensors and power. In superheat applications.
The pressure and temperature sensors should be placed
as close to one another as possible.
3. (Optional) Congure user desired alarms. Alarms close
the circuit between pins 4 and 6, and may be linked to
any device with a power rating between 24 - 250VAC
and 3A Max Current.
4. (Optional) Connect remote interlock. Interlock is active
when switch is closed and deactivated when switch is
open.
5. Best practice is to test function the unit, verifying output
matches expectations, using a process calibrator (4-
20mA by default) measuring analog signal output.
6. Switch off power
7. Connect outputs to valves and place into service
Contact Hansen if errors are encountered
PXVC UNIVERSAL CONTROLER

20.6○C
19
Screen Indication (PXVC-PT)
1 = Superheat/subcool value
2 = Actual pressure/temperature
Up
Increase SET POINT
(Parameter setting: SCROLL menu
options and parameters)
Center (POWER)
Press > 2 sec.: turn unit OFF.
(PXVC-PT default remote interlock ON
disables manual OFF)
(Parameter setting: ENTER to select
menu option, accept parameter change)
Large Digits
Display of
measured value
Small Digits
Display of set
point value
PI sequence
ramp-up delay
active
Indicators
Active alarm
Vertical Bar
Output Status
10% resolution
Left (ESC)
Select screen 1, 2 (PXVC-PT)
Parameter setting: Escape
menu, discard parameter value
Down
Decrease SET POINT
(Parameter setting: SCROLL menu
options and parameters)
Right (Option)
Instantaneous Press (< 2 seconds)
accept menu/parameter option (enter key)
Hold Button (> 2 seconds) clear
5PXVC
AUGUST 2018
MOUNTING CONSIDERATIONS:
Ensure the controller has adequate protective enclosure
for the environment, enclosure required for wet or
condensation prone environments. Ensure the controller
has adequate heating if the environment is below 32°F
(0°C). Controller may be surface mounted with two #4
screws or controller may be mounted to a DIN rail
SYSTEM STARTUP:
1. During operation the power button is not available
to be used to stop the system, so before starting the
controller connect a remote interlock and close the
circuit to disable the controller.
2. Power on the controller and verify the screen is
ashing to indicate the controller is not active. If the
interlock is not active, try operating the switch, if this
does not work power down the system and check the
controller jumpers, switch and wiring, contact Hansen
for further support.
3. Once interlock is disabled, verify the screen indicator
displays an underscore under the number “1,” as shown
in the user menus section. Screen #1, the default
screen, displays the measured value and the set point.
Screen two is available on all of the controllers, however
only the PXVC-PT offers additional information in the
form of temperature and pressure readings.
4. Pressing the up or down arrows will increase or
decrease the set point
5. Pressing the left arrow will either escape (go back)
from a menu or if at the main menu show the second
screen on PXVC-PT models. On other models Hansen
recommends only utilizing screen 1.
6. Set the controller to the desired set point, and wait
for the controller to approach the desired set point
(%, degrees, PSI).
7. Operating conditions should be monitored closely
during startup, and the interlock may be used if
necessary to stop the controller
8. The remote interlock should be connected to the
control system and used to disable the controller for
any applicable conditions, including but not limited
to: Defrost cycles, System Shutdown, etc.
USER MENUS
CHANGING PARAMETERS:
1. Press UP/DOWN buttons simultaneously for three
seconds. The display will show rmware version and
hardware revision number. Press the OPTION button
to start login.
2. CODE is shown in small digits display.
3. Select the relevant Parameter Access Code using UP/
DOWN (refer to controller subsections with parameter
listings)
4. Press OPTION button after selecting the correct code.
5. Select the parameter required with the UP/DOWN
buttons. Change a parameter value by pressing the
OPTION button. Three arrows are displayed to indicate
that the parameter may be modied. Use UP/DOWN
buttons to adjust the value.
6. Upon completion press the OPTION button to save the
new value and return to menu selections (three arrows
should disappear), pressing the POWER button will
discard changes without saving, press the esc button
to return to the next highest level menu
7. The POWER button may be used to exit the menu
as well, otherwise the unit will return to the default
screen when no button has been pressed for longer
than 5 minutes.
8. It is recommended that only personnel experienced
in control loops adjust control settings. There are
sets of control parameters (P and I values) for direct
acting and reverse acting controllers, if adjusting
the control parameters ensure you select the correct
parameter
PXVC UNIVERSAL CONTROLER
a. PXVC-(PT,DX,T) are direct acting controllers
meaning the output is directly related to the input
(temperature increases and valve opens)
b. PXVC-(P,L) are reverse acting controllers meaning
the output is inversely related to the input (level
or pressure drops and valve opens)

PARAMETER DESCRIPTION RANGE DX LEVEL PRESS TEMP
1u 00 Input signal type:
0 = input not active
1 = 0…10V or
0…20mA
2 = 4…20mA
3 = Temperature
0 – 3 2 2 2 3
1u 01 Signal display
minimum value
50…205 -30 0 0 -40°F
1u 02 Signal display
maximum value
50…205 [phone]°F
1u 04 Unit of universal input
(For analog inputs
only):
0 = no unit 1 = %
2 = °C/ °F
3 = PSIA
0 – 3 2 1 3 2
1u 05 Samples taken for
averaging control
signal
0...100 30 30 15 30
Fu 12 Remote Interlock
0 = disable
2 = enable
0 or 2 2222
1L 27 Startup Delay 0-255 2 0 0 0
1L 11 P – band reverse
acting XPH
Acc Input 10.0°F 10.0% 10.0PSIa 10.0°F
1L 12 P – band direct acting
XPC Acc Input 10.0°F 10.0% 10.0PSIa 10.0°F
1L 13 KIH, Integral gain
reverse acting, in 0.1
steps
low value =
slow reaction
high value =
fast reaction
0…25.5 8.0 0.1 0.1 0.1
1L 14 KIC, Integral direct
acting, in 0.1 steps
0…25.5 8.0 0.1 0.1 0.1
1L 15 TI, measuring interval
integral
low value =
fast reaction
high value =
slow reaction
0…255 sec 30 15 15 30
6
PXVC
AUGUST 2018
PXVC UNIVERSAL CONTROLER
Note: Hansen controller is factory programmed to provide precise control in refrigeration applications when used in conjunction with
the PXV valve or Hansen Motorized Control Valves. If control difculties occur during startup, it is recommended to thoroughly check
system and components for proper installation, operation, and sensor location before attempting to modify and/or tune the controller.
Hansen controller is a multi-use controller and only the listed parameters should be accessed/changed. Any other parameter changes
may result in unsafe operation. Consult factory for further details if needed.
PARAMETER ACCESS CODE 0241
TABLE 1.

7PXVC
AUGUST 2018
MODEL SPECIFIC CONTROLLER DETAILS:
PXVC-PT
The PXVC-PT controller measures the superheat
temperature of the refrigerant by measuring the pressure
and temperature, from which the superheat is calculated.
The PXVC-PT controller is different from the other
controllers in that it uses the second screen to show
pressure and temperature readings from the sensors
and it has an additional universal input to accommodate
measuring pressure and temperature simultaneously as
shown in Figure 5. The controller provides proportional
control with integral error correction to digital and analog
outputs for use with Hansen Motorized Control Valves
and Pulse Expansion Valves. The PXVC-PT allows for
monitoring of the refrigerant temperature and pressure
by the secondary display screen as shown in the user
menus (please note that the pressure displayed is in PSIA
pressure and convert to PSIG appropriately).
Follow the startup instructions as written in the section
on startup, however note that the second screen (as
shown in the section on user menus) may be used to set
the suction pressure regulator pressure to control the
system superheat, please note that the pressure displayed
is in PSIA pressure and convert to PSIG appropriately.
PXVC-PT
FIGURE 5.

DX EVAPORATOR
EXPANSION VALVE
PRESSURE TRANSDUCER
(10:00 - 2:00 POSITION)
MCR
PXVC
CONTROLLER
TYPICAL APPLICATION: DIRECT EXPANSION EVAPORATOR, MCR
INSULATION
REFRIGERANT
TEMPERATURE
SENSOR AT
4 OR 8 O'CLOCK
POSITION
PIPE
REFRIGERANT
TEMPERATURE
SENSOR
TO PROTECTED SUCTION
P TRAP IS REQUIRED
AIR
TEMPERATURE
SENSOR
THERMOSTAT TO
INTERLOCK
8
PXVC
AUGUST 2018
PXVC-PT
FIGURE 6.
SYSTEM STARTUP:
1. During operation the power button is not available
to be used to stop the system, so before starting the
controller connect a remote interlock and close the
circuit to disable the controller.
2. Power on the controller and verify the screen is
flashing “OFF” to indicate the controller is not active.
If the interlock is not active, try operating the switch,
if this does not work power down the system and
check the controller jumpers, switch and wiring,
contact Hansen for further support.
3. Once interlock is disabled, verify the screen indicator
displays an underscore under the number “1,” as
shown in the user menus section. Screen #1, the
default screen, displays the measured value and the
set point. Screen two is only utilized on the PXVC-PT
which provides additional information in the form of
temperature and pressure readings.
4. Pressing the up or down arrows will increase or
decrease the set point
5. Pressing the left arrow will show the second screen
on applicable models.
6. Review the specifications for the evaporator or heat
exchanger and determine the necessary refrigerant
temperature for the equipment to function properly,
set suction pressure to appropriate value, observe
that the superheat set-point must be less than the
temperature differential between the media and the
refrigerant to attain stability.
7. Set the controller to the desired set point, and wait
for the controller to approach the desired set point
(%, degrees, PSI).
8. Replace interlock with temperature control interlock
(thermostat (dry contact) or system closed contact
control) to pins 15 and 16. Failure to do so will result
in inability to precisely control temperature and
undesirable operation. A manual interlock may be
used to override the system when wired in parallel
with the media temperature control interlock as
shown in Figure 6.
9. While controller is in operation and valve partially
open adjust the suction line pressure to attain the
desired refrigerant temperature, NOTE this will not
directly control media temperature, see step 8 for
media temperature control
10. Operating conditions should be monitored closely
during startup.
System design considerations: Where liquid may be
present, to precisely measure temperature, a trap is
required to be installed in the piping directly after the
sensing unit and an immersion well installed in the line to
allow the sensor to contact the working fluid when sensing
superheat or temperature. This allows the saturated gas/
liquid mixture level to stabilize in the trap and the sensor
to read the temperature of the liquid which conducts
heat much more readily than gas, as shown in drawing
Figure 6. Either the PXV or Motorized Control Valve may
be used in this configuration refer to Figure 7 for details.

9PXVC
AUGUST 2018
PXVC-PT
FIGURE 7.

PARAMETER DESCRIPTION RANGE DEFAULT
AL00 Subcooling Temperature out of Range OFF ON OFF
AL01 Subcooling Temperature Limit -76°F – 250°F -76°F
AL02 Superheat out of Range OFF ON OFF
AL03 Superheat Temperature Limit -76°F – 250°F 125°F
AL04 Superheat /Subcooling Differential Alarm 0°F – 100°F 10°F
AL05 Input #1 out of range (low) OFF ON ON
AL06 Input #1 Lower Limit 0 PSIA 0 PSIA
AL07 Input #1 Out of Range (high) OFF ON OFF
AL08 Input #1 Upper Limit 0 PSIA 100 PSIA
AL09 Input #1 Differential Alarm 0 PSI – 100 PSI 10 PSI
AL10 Input #2 Out of Range (low) OFF ON OFF
AL11 Input #2 Lower Limit -76°F – 250°F -76°F
AL12 Input # 2 Out of range(high) OFF ON OFF
AL13 Input #2 Upper limit -76°F – 250°F 250°F
AL14 Input #2 Differential Alarm 0°F – 100°F 10°F
PARAMETER DESCRIPTION VALUE DEFAULT
FS00
R717
R22
R134a
R507
0
1
2
3
0
10
PXVC
AUGUST 2018
PXVC-PT
PARAMETER ACCESS CODE 0015
Refrigerant Selection
PARAMETER ACCESS CODE 0030
TABLE 2.
TABLE 3.
Parameters
Alarms
Alarms can be used for a variety of needs, default configurations allow operation of external equipment, send a signal
back to a programmable logic controller, or any combination thereof. By default alarms are configured to operate on
digital output 2 and have no effect on the control system. By Default the alarm will be enabled until the controller is
reset or the value rises to an increment of 10 (degrees F , PSI, %,etc) above its set-point. this can be modified, contact
Hansen for configuration instructions.

PARAMETER DESCRIPTION RANGE DEFAULT
dIA0 Solenoid (Pulse output) Manual Con-
trol 0-100 0
dIA1 Alarm Output Manual Control ON - OFF OFF
dIA2 MCV (Analogue Output) Manual Con-
trol 0-100% 0
PARAMETER DESCRIPTION RANGE DEFAULT
Pid0 P Band (Output Increases Linearly
within this range of set point)
-76°F to 250°F 10°F
Pid1 Integral Gain (Ki) (Output increases
as multiple of P-band based on time
away from set point)
0-25.5 8.0
Pid2 Measuring (Integral Reset) Interval 0-255 Secs 30 Secs
11 PXVC
AUGUST 2018
Note: Hansen controller is factory programmed to provide precise control in refrigeration applications when used in conjunction with
the PXV valve or Hansen Motorized Control Valves. If control difculties occur during startup, it is recommended to thoroughly check
system and components for proper installation, operation, and sensor location before attempting to modify and/or tune the controller.
Hansen controller is a multi-use controller and only the listed parameters should be accessed/changed. Any other parameter changes
may result in unsafe operation. Consult factory for further details if needed.
Manual Controls
When necessary to manually operate a valve the controller can be operated by the diagnostic menu options as below.
The range column refers to the available selections of the setting, specifically for dIA0 this represents the valve duty
cycle on pulse applications or percent open on MCV applications.
PARAMETER ACCESS CODE 0020
PXVC-PT
Tuning
The Hansen PXVC-PT controller provides reasonably good control out of the box, and it is recommended that only
personnel experienced in control loops adjust these settings.
PARAMETER ACCESS CODE 0005
TABLE 4.
TABLE 5.

12
PXVC
AUGUST 2018
PXVC-DX
The PXVC –DX controller is a precision controller for
applications where superheat control is critical; offering
single point temperature and pressure sensing (sensor
sold separately), or customer supplied superheat values
via analog (4-20mA) input (Range 30°F subcooled liquid
to 30°F superheated vapor). Refer to the bulletin PT100c
for compatible superheat sensors (not included).
SYSTEM STARTUP:
1. During operation the power button is not available
to be used to stop the system, so before starting the
controller connect a remote interlock and close the
circuit to disable the controller.
2. Power on the controller and verify the screen is
flashing “OFF” to indicate the controller is not active.
If the interlock is not active, try operating the switch,
if this does not work power down the system and
check the controller jumpers, switch and wiring,
contact Hansen for further support.
3. Once interlock is disabled, verify the screen indicator
displays an underscore under the number “1,” as
shown in the user menus section. Screen #1, the
default screen, displays the measured value and the
set point. Screen two is only utilized on the PXVC-PT
which provides additional information in the form of
temperature and pressure readings.
4. Pressing the up or down arrows will increase or
decrease the set point
5. Pressing the left arrow will show the second screen
on applicable models.
6. Review the specifications for the evaporator or heat
exchanger and determine the necessary refrigerant
temperature for the equipment to function properly,
set suction pressure to appropriate value, observe
that the superheat set-point must be less than the
temperature differential between the media and the
refrigerant to attain stability.
7. Set the controller to the desired set point, and wait
for the controller to approach the desired set point
(%, degrees, PSI).
8. Replace interlock with temperature control interlock
(thermostat (dry contact) or system closed contact
control) to pins 13 and 14. Failure to do so will result
in inability to precisely control temperature and
undesirable operation. A manual interlock may be
used to override the system when wired in parallel
with the media temperature control interlock as
shown in Figure 6.
9. While controller is in operation and valve partially
open adjust the suction line pressure to attain the
desired refrigerant temperature, NOTE this will not
directly control media temperature, see step 8 for
media temperature control
10. Operating conditions should be monitored closely
during startup
System design considerations: Where liquid may be
present, to precisely measure temperature, a trap is
required to be installed in the piping directly after the
sensing unit. This allows the saturated gas/liquid mixture
level to stabilize in the trap and the sensor to read the
temperature of the liquid which conducts heat much more
readily than gas, as shown in drawing Figure 8.
PXVC-DX

13 PXVC
AUGUST 2018
PXVC-DX
FIGURE 8.

14
PXVC
AUGUST 2018
PXVC-L
FIGURE 9.
PXVC-L
The PXVC-L controller is used for liquid level control
in vessels, flooded evaporators or wherever control of
liquid level is needed and is designed to integrate easily
with the Hansen VLT line of probes. The Hansen PXVC-L
controller is optimized to control liquid within +/- 10% of
the set point.
It is important to note that the PXVC-L reacts opposite
of the input, quite simply this means as the level drops
below set point the valve opens, this is critical to remember
when adjusting set point. The possibility for liquid slugs to
present themselves in this application exist, if not properly
set. Upon startup or shutdown Hansen recommends
setting the level with adequate room for overfeed as on
initial startup the controller may overshoot the set point.
Either the PXV or Motorized Control Valve may be used
in this configuration, for wiring diagram, refer to Figure 9.

15 PXVC
AUGUST 2018
PXVC-P
The Hansen PXVC-P pressure controller is preconfigured
to provide precise control of pressure for applications
such as compressor hot gas bypass. The controller is
preconfigured for the Hansen PT3 transducer, which is
a 4-20mA transducer rated for 0-300psia. The PXVC-P
Controller is preconfigured to work with either the
pulse expansion valve (signal on digital output 1) or the
Motorized Control Valve (signal on analog output 1) It
is important to note that the PXVC-P controller reacts
opposite of the input, quite simply this means as the
pressure drops below set point the valve opens. Either
the PXV or Motorized Control Valve may be used in this
configuration, for wiring diagram, refer to Figure 10.
PXVC-P
FIGURE 10.

16
PXVC
AUGUST 2018
PXVC-T
The Hansen PXVC-T Controller is factory programmed to
provide precise control of temperature in applications
such as Heat Exchangers, or Liquid Injection for screw
compressors. A temperature sensor, NTC 10K included,
provides a temperature input to the Hansen PXVC-T
controller which pulses the Hansen PXV valve, or sends an
analog signal to the Hansen Motorized Control Valve. The
valve opens and closes at a rate equal to the refrigerant
flow necessary to maintain discharge gas temperature.
Either the PXV or Motorized Control Valve may be used in
this configuration, for wiring diagram, refer to Figure 11.
PXVC-T
FIGURE 11.

17 PXVC
AUGUST 2018
PXVC-CI
The PXVC-CI (Controller Interface) controller is designed
to allow an electronic system such as microcontroller or
PLC to interface with a Pulse Width Expansion Valve. The
Controller accepts a 4-20mA analog input and provides
pulse width signal to the PXV valve as shown in Figure 12.
PXVC-CI
FIGURE 12.

PXVC-PT Superheat/Supercooling Controller
(includes TS2 temp sensor; requires PT2
pressure transducer, not included)
PXVC-DX
PXVC-T
PXVC-L
PXVC-P
PXVC-CI
DX Controller for PXV, PXVW (HPT not
included, see below)
Temperature Controller for PXV, PXVW
(includes TS1 temp sensor)
Level Controller for PXV, PXVW (level
sensor not included)
Pressure Controller for PXV, PXVW
(transducer not included, see PT3 below)
Control Interface Module for PXV, PXVW
(4-20mA input, pulse-width output)
HPT717
HPT507
HPT134
PT2
PT3
IMW
Pressure/Temperature Transducer, NH3,
3/4” NPT
Pressure/Temperature Transducer, R-507,
3/4” NPT
Pressure/Temperature Transducer, R-
134a, 3/4” NPT
Pressure Transducer, 15” - 85 psig,
4-20mA, 1/4” MPT
Pressure Transducer, 15” - 285 psig,
4-20mA (for PXVC-P)
Immersion Well for above, SS, 4” insert,
1/2” MPT
WTE3
PSU2
TR40*
TR92
Water tight Enclosure (NEMA4), for above
controllers
Compact Power Supply (100-240VAC:
24VDC) for above enclosure
AC Transformer 115/230 VAC:24VAC (40
VA), powers PXVC only (75-0718)
AC Transformer 115/230VAC:24VAC (92
VA), powers PXVC +24V coil (35-0037)
18
PXVC
AUGUST 2018
HANSEN TECHNOLOGIES CORPORATION
681 Commerce Street, Burr Ridge, Illinois 60527 USA
Tel: [phone] Toll: 800.426.7368 Fax: [phone]
Web: www.hantech.com Email: [email protected]
USA ∙ Asia ∙ Europe ∙ India ∙ Latin America ∙ Middle East
© 2018 Hansen Technologies Corporation
CAUTION
These instructions must be completely read and
understood before selecting, using or servicing
Hansen valves and electronics. Only knowledgeable,
trained refrigeration service personnel should install,
operate, or service. Stated temperature and pressure
limits should not be exceeded. When dealing with
electricity considerable caution should be exercised
and only trained electricians should install wiring for
this component. See also Safety Precautions supplied
with product.
WARRANTY
All Hansen products, except electronics, are guaranteed
against defective materials or workmanship for one
year F.O.B. factory. Electronics are guaranteed against
defective materials or workmanship for 90 days F.O.B.
factory. No consequential damages or field labor is
included.
ORDERING INFORMATION
CONTROLLERS
SENSORS
ACCESSORIES