Hansen VPIF Operating instructions

Specifications, Applications,
Service Instructions & Parts
VPIF
VALVE POSITION INDICATOR
Bulletin VPIFb
FEB 2008
for use with
Sealed Motor Valves
VPIF
INTRODUCTION
The Valve Position Indicator, model VPIF, is a digital
monitoring module for use with Sealed Motor Valves
(SMV). The VPIF displays the valve position during
normal (automatic) operation. It can also be used to
locally open or close the valve. This is particularly
helpful when servicing or recalibrating the valve is
required.
The large LED readout displays the valve position (in
percent). The VPIF contains an internal independent
current source, which is switch selectable for 4 mA
(close) and 20 mA (open).
The VPIF can be mounted on or near the valve for ease
of use and visibility. This provides better accessibility
for technicians when valves are mounted high in the
air or in obstructed areas. The VPIF can be mounted
up to 10 feet (3 meters) in any direction from the valve.
VPIEC Extension Cables are available where more
length is required.
KEY FEATURES
Provides local indication of the SMV valve position
Facilitates SMV recalibration
Versatile installation options
Large LED readout
Watertight corrosion resistant enclosure (NEMA 4X)
Uses same supply voltage as SMV
ADVANTAGES
The VPIF displays valve position locally while passing
the feedback signal if it is to be monitored remotely.
For recalibration of SMV, the VPIF will output either
4 mA (close) or 20 mA (open). An externally mounted,
waterproof three position switch is used for positioning
of the SMV.
The VPIF valve position feedback can alert operators
to unstable control schemes. This feature is very
important to the proper operation of the refrigeration
system and the life of the Sealed Motor Valve. The
VPIF is compact and reliable at very low temperatures.
Waterproof quick disconnect connectors allow for easy
removal of the SMV power head for service.
APPLICATIONS
The VPIF may be installed on the following Sealed
Motor Valve models:
HMMV/HMMVC
HMMR/HMMRC
HMXV/HMXVC

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MATERIAL SPECIFICATIONS
Electrical
Readout: LED, 0.0 –100.0%
Signal Output to SMV:
Automatic: Pass through
Open: 20 mA
Close: 4 mA
Power Supply: 24 VAC
VPIF Power Consumption: 3.6 VA
Housing: Watertight, NEMA 4X (IP65)
Ambient Temperature: -20ºF to +125ºF
(-30ºC to +50ºC)
Cables: 7 wires - marked every foot 1 thru 6 with
the 7th yellow/green (earth ground), 18 AWG
wire cable with waterproof, quick disconnect
connectors.
INSTALLATION
The VPIF is shipped in a box with the Sealed Motor
Valve and comes factory calibrated and tested; ready
to use. The VPIF can be mounted on the valve or to
any flat surface. The clear cover must be removed to
access the four plate bolts. These same four holes
are used to mount the VPIF on a flat surface. Replace
the clear cover when complete.
WIRING
The VPIF is provided with waterproof quick disconnect
cables. If the VPIF is mounted on the valve, the 8’
cable and the 2’ cable with pigtails can be connected
together for a total of 10’ to the customer supplied
junction box.
If the VPIF is mounted separately from the valve, the
8’ cable is connected to the SMV power head. The
VPIF can be mounted up to 10’ away from the valve.
For greater distances, additional 8’ VPIEC Extension
Cables can be connected. Refer to Figure D.
Proper wiring is very important to the operation of
the Sealed Motor Valve. Correct wire size for 24VAC
power to the power head must be selected for the
distance and number of valves. See 24 VAC Power
Wiring Table 1.
TABLE 1: 24 VAC POWER WIRING
24 VAC POWER
WIRING
(WIRES NO. 1 AND 2)
(90 VA PER VALVE
REQUIRED)
AWG WIRE GAUGE (mm2)
NUMBER OF VALVES POWERED
CABLE LENGTH
ft(m)
1234
50 (15) 18 (1,0) 16 (1,5) 14 (2,5) 12 (4,0)
100 (30) 16 (1,5) 12 (4,0) 10 (6,0) 10 (6,0)
150 (46) 12 (2,5) 10 (6,0) 8 (10,0) 8 (10,0)
200 (61) 12 (4,0) 10 (6,0) 8 (10,0)
300 (91) 10 (6,0) 8 (10,0)
TYPICAL INSTALLATION
Figure A
VPIF MOUNTED ON VALVE VPIF MOUNTED REMOTELY

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VPIF INSTALLATION DIMENSIONS, INCH (MM)
Figure B
VPIF MOUNTED REMOTELY VPIF MOUNTED ON VALVE
RECALIBRATION INSTRUCTIONS
Hansen Sealed Motor Valves are factory calibrated,
and hold their calibration during shipment, power
outages, etc. However, valve disassembly or manual
opening with the MOVT (Manual Operation Valve Tool)
does require subsequent recalibration. Therefore,
after removing or replacing the 4-20 mA power
head of a Sealed Motor Valve, recalibrate the valve.
Recalibration synchronizes the control input with
the valve position; that means, for example, a 12 mA
input (50%) would result in the valve moving to the
half-open position.
Recalibration requires the ability to control the 4-20 mA
control input to the motor between 4 and 20 milliamps,
and requires the ability to allow the valve to stroke fully
open and closed. For valves shipped after July 4, 2006,
or retrofitted valves with VPIF, the 4 mA and 20 mA
signal to calibrate the valve is part of the function of
the VPIF. If the valve is not equipped with a VPIF, then
the 4 mA and 20 mA to calibrate must come from the
computer or separate signal generator. Only qualified
refrigeration service personnel should perform this
procedure, and proper precautions taken to prevent
a hazardous or undesirable occurrence resulting from
operating the valve from open and closed.
1. Secure the refrigeration system to allow the
valve to open and close fully without causing
undesirable system problems to occur.
2. Mount and secure the motor on the sealed motor
valve. Connect electrical wiring in accordance
to the valve and controller manufacturers
specifications.
3. Install “Calibration Key” over ‘X’ on side of motor
and secure with strap.
4. Increase the control input to 20 mA or slightly
greater. Move VPIF switch to up (OPEN) position.
Maintain at least 20 mA for at least two minutes.
This will give the valve time to move to the wide
open position and calibrate its position. Note:
some computer control systems have lag times
before the control input is sent to the valve.
5. Decrease the control input to 4 mA or less. Move
VPIF switch to down (CLOSE) position. Maintain
4 mA or less for at least two minutes. This will
give the valve time to move to the completely
closed position and calibrate its zero point.
6. Again increase the control input to at least 20
mA. Move VPIF switch to up (OPEN) position.
Maintain at least 20 mA for at least two minutes.
This will give the valve time to move to the wide
open position and set its span.
7. The valve should now be calibrated and in the
wide open position.
8. Remove “Calibration Key” and store. The valve
will operate satisfactorily if the “Calibration Key”
remains over the “X”, but the valve will recalibrate
each time the control input is at 4 mA or 20 mA
for more than the two minutes.
9. Return valve operation switch to (AUTO).

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FEEDBACK MODES
There are two feedback modes for the VPIF, “Local
Display Only” or “Local Display and Remote Feedback”.
To change the setting, the VPIF must be opened and
manually set to the proper system requirements.
Improper settings can result in damage to the system
controller and/or VPIF.
The VPIF is shipped from the factory with the jumper
in the “Local Display and Remote Feedback” mode.
1) Local Display Only - This mode is used when the
controller is not equipped with a valve position
display. The VPIF always displays valve position
in the AUTO, OPEN or CLOSE switch positions.
(Jumper on pins 1 and 2).
3) Local Display and Remote Feedback – With
switch in AUTO, valve position is read at both
the VPIF and controller (with valve position
display). With switch in OPEN or CLOSE
position, valve position is displayed on both the
VPIF and customer or Hansen controllers with
valve position display. (No jumper connection
standard. Place jumper on one post for future
use).
CHANGING THE FEEDBACK MODE
Tools required: 2mm hex key, Phillips head screwdriver
and needle nose pliers.
To change the feedback mode, move the
two position jumper to the appropriate setting. Take
care not to touch the electronic components as static
electricity may damage the electronic circuits.
1. Remove power and control signal lines from the
VPIF by removing the external quick disconnect
connector labeled “TO CONTROLLER”.
2. Remove the clear cover from the VPIF.
3. Remove the black acrylic plastic faceplate by
removing the four buttonhead hex keyed screws.
Use a 2mm hex key.
4. Rotate the bottom of the plastic plate to the left.
Only lift the plate enough to clear the side of the
housing. Refer to Figure C.
5. Use needle nose pliers to make the required
changes.
6. Assemble unit in reverse order.
Local Display Only Mode: Jumper on pins 1 and 2
Local Display and Remote Feedback Mode: No
jumper connection (standard). Place jumper on one
post for future use.
VPIF FACEPLATE
Figure C

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MODEL: VPIF WIRING
Figure D

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RETRO-FIT KITS FOR EXISTING SEALED
MOTOR VALVE INSTALLATIONS
Retro-fit Kits are available to add the VPIF to existing
Sealed Motor Valve installations. Kit number 75-1210
includes the VPIF, cables and junction box with wire
nuts. The VPIF is simply spliced into the existing
wiring. All wires are numbered each foot to aid in
correct wire connections.
To add a quick disconnect connector
on Sealed Motor Valve power head, use Kit
number 75-1211, which includes a field solder male
cable connector. See Figure E for the correct
terminal.
VPIF FIELD SOLDERED CABLE CONNECTORS
(For 75-1211 VPIF Retro-fit Kit)
Figure E
MALE
(BACK SIDE)
YELLOW/GREEN
STRIP LENGTH:
A= .150”
B= .400”
1) EACH WIRE HAS A NUMBER IDENTIFIER (1-6). GROUND (YELLOW/GREEN) TO #7 PIN.
2) MATCH UP EACH WIRE TO ITS CORRESPONDING CONNECTOR POSITION AND SOLDER.

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TROUBLESHOOTING GUIDE FOR VPIF
Problem/Complaint Check/Solution
Valve stuck
– Wire size/gauge to small
– Supply power not adequate
– Cable connectors wired incorrectly
– Check signal polarity - #3 and #4, #5 and #6 wires
– Excessive dirt in valve; Use MOVT tool to check for rough
movement
No Valve Position Feedback or Display 25%
– Check 24 VDC power supply
– Check signal polarity - #3 and #4, #5 and #6 wires
– Cable connectors wired incorrectly
– VPIF in the Local and Remote Feedback Mode
No visual data on LED Display – Check 24 VAC supply power is good (+/-5%)
– Cable connectors wired incorrectly
Valve % open span is very limited – Recalibrate SMV
VPIF indicates % open greater than 100.0% – Recalibrate SMV
– +/- 3% is within tolerance
VPIF indicates % open less than 0.0% – Recalibrate SMV
– +/- 3% is within tolerance
VPIF LED Display value is greater than or less
than what is indicated by the system controller
or PLC
– If reading between the two devices are within +/- 3%, this
is normal
System computer or PLC displays open for SMV
valve position feedback
– VPIF configured in wrong feedback mode
– Cable connectors wired incorrectly
– Check signal polarity - #3 and #4, #5 and #6 wires
VPIF % open 10ths position is not stable – +/- 3% is within tolerance
VPIF % open is not stable
– Check wiring is sufficient size for the distance from 24 VAC
power supply and number of valves connected to the 24 VAC
power supply
– Check 24 VAC power source
– System controller or PLC operation is erratic
– RFI/EMI interference

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Hansen Technologies Corporation
6827 High Grove Boulevard
Burr Ridge, Illinois 60527 USA
Tel: [phone] Fax: [phone] Toll: 800.426.7368
Email: [email protected] Web: www.hantech.com
USA ∙Asia ∙Europe ∙India ∙Latin America ∙Middle East
© 2008 Hansen Technologies Corporation
CAUTION
The VPIF is designed for use with the SMV only. Read
these instructions and related safety precautions
before selecting, using, or servicing these devices.
WARRANTY
Hansen electrical and electronic parts are guaranteed
against defective materials and workmanship for
90 days F.O.B. our plant. All other components
are guaranteed for one year F.O.B. our plant. No
consequential damages or field labor is included.
WARNING
As with all electronics and mechanical components,
there is a limited life expectancy. An expected life of
seven to ten years is typical. This should be understood
as only a suggested replacement time period. Actual
ambient conditions, contaminants, quality of electric
current, voltage, etc., may necessitate a different
replacement schedule. Regardless, the VPIF should
be inspected at least annually to ensure safe and
continuous service. See also Safety Precautions in the
current List Price Bulletin and the Safety Precautions
Sheet supplied with the product.
ORDERING INFORMATION
VPIF VALVE POSITION INDICATOR KITS
CATALOG
NUMBER DESCRIPTION
75-1208
Power Head Upgrade Kit includes
Power Head, VPIF, VPIF bracket and
cables
75-1213
Power-Close Power Head Upgrade Kit
includes Power-Close Power Head,
VPIF, VPIF bracket and cables
75-1210 VPIF Retro-fit Kit includes VPIF, 2
cables and junction box
75-1211
VPIF Retro-fit Kit includes VPIF, cable
and solder quick disconnect cable
connector
VPIF
Valve Position Indicator (VPIF)
Monitor for SMV Models with 4-20mA
(less cables & bracket)
VPIEC 8’ Extension Cable