Frick Vyper 305 Owner's manual

Form 100-200 IOM (FEB 2009)
INSTALLATION - OPERATION - MAINTENANCE
File: SERVICE MANUAL - Section 100
Replaces: S100-200 IOM (NOV 2008)
Dist: 3, 3a, 3b, 3c
THIS MANUAL CONTAINS RIGGING, ASSEMBLY, START-UP,
AND MAINTENANCE INSTRUCTIONS. READ THOROUGHLY
BEFORE BEGINNING INSTALLATION. FAILURE TO FOLLOW THESE
INSTRUCTIONS COULD RESULT IN DAMAGE OR IMPROPER
OPERATION OF THE UNIT.
305 / 254 Horsepower
437 / 362 Horsepower
Please check www.johnsoncontrols.com for the latest version of this publication.

VYPER™VARIABLE SPEED DRIVE
INSTALLATION - OPERATION - MAINTENANCE
100-200 IOM (FEB 09)
Page 2
Indicates an imminently hazardous situation which, if not avoided, will result in death or serious
injury.
Indicates a potentially hazardous situation or practice which, if not avoided, will result in death
or serious injury.
SAFETY PRECAUTION DEFINITIONS
Indicates a potentially hazardous situation or practice which, if not avoided, will result in dam-
age to equipment and/or minor injury.
NOTE: Indicates an operating procedure, practice, etc., or portion thereof which is essential to highlight.
Contents
PREFACE..........................................................................3
JOB INSPECTION.............................................................3
TRANSIT DAMAGE CLAIMS ............................................3
UNIT IDENTIFICATION .....................................................3
INSTALLATION.................................................................4
FOUNDATION ..................................................................4
RIGGING AND HANDLING...............................................4
FRICK VYPER™MODELNUMBER DEFINITIONS ...........4
Vyper Pre-Installation Site Check List ...............................5
Vyper Pre-Operation Site Check List.................................5
Pre-startup Inspection .......................................................6
GENERAL DESCRIPTION................................................7
ELECTRICAL LIMITS........................................................7
CURRENT LIMITS ............................................................7
INPUT SHORT CIRCUIT LIMITS ......................................7
ENVIRONMENT ................................................................7
COOLANT TEMPERATURE LIMITS .................................8
HEAT EXCHANGER PRESSURE DROP .........................9
POWER WIRING.............................................................10
GROUNDING ..................................................................10
FUSES AND CIRCUIT BREAKERS................................10
ACCEPTABLE CABLE TYPES........................................10
CONTROL WIRING.........................................................10
TRANSFORMERS ..........................................................11
POWER FACTOR CAPACITORS ....................................11
SOFT-START SEQUENCE..............................................11
INTERFACING ELECTRICAL EQUIPMENT...................11
INTERFERENCE WITH ELECTRONIC EQUIPMENT ....12
SYSTEM OPERATING CONDITIONS ............................12
PNEUMATIC CONTROLS...............................................12
VYPER™SYSTEM OVERVIEW ......................................12
CONFIGURATION:..........................................................16
VYPER™COOLING LOOP..............................................16
Liquid Cooled Vyper P & I Diagram-Economized ............17
Liquid Cooled Vyper P & I Diagram-Noneconomized.. 18
PACKAGE-MOUNTED VYPER™.....................................19
VYPER™PREINSTALLATION SITE CHECKLIST...........20
BLOWER MOTOR ROTATION ........................................20
POWER AND CONTROL WIRING ENTRY LOCATIONS21
EXTERNAL POWER AND CONTROL WIRING..............22
ELECTRICAL CONDUITS...............................................23
WIRING DIAGRAM OPTIONS ........................................23
MOTOR THERMISTOR PROTECTION...........................23
MOTOR RTD THERMAL PROTECTION........................24
TEMPERATURE CONTROL VALVE WIRING .................24
MOTOR COOLING BLOWER WIRING ...........................25
DRAWING NOTES ..........................................................25
ANALOG BOARD WIRING..............................................26
QUANTUM™LX COMMUNICATIONS WIRING................27
INSTALLATION CHECK LIST..........................................27
THREE INSTALLATION STEPS......................................28
COOLANT REPLACEMENT ...........................................28
OPERATION ...................................................................30
QUANTUM™LX CONTROL PANEL .................................30
VYPER™OPERATION ....................................................30
QUANTUM™LX PANEL SET UP......................................34
ACCESSING THE VYPER™SETUP ...............................34
SETTING THE USER LEVEL..........................................35
PROGRAMMING.............................................................36
VYPER™/ QUANTUM™LX COMMUNICATIONS.............36
PID SETUP......................................................................37
SETTING THE MOTOR SCREEN...................................38
VFD and Capacity Control Settings.................................41
SETTING THE JOB FLA .................................................46
Tables C and D: Job FLA Calculation ..............................46
FRICK INTERFACE BOARDDIP SWITCH SETTINGS...47
MAINTENANCE..............................................................49
STANDARD MAINTENANCE ........................................49
REPLACEMENT OF THE VYPER™POWER MODULE...49
REPLACEMENT OF THE VYPER™HARMONIC FILTER
MODULE .........................................................................50
FREQUENTLY ASKED QUESTIONS..............................50
ADDENDUM....................................................................51
VYPER™ALARMS / SHUTDOWNS ................................51
FAULT CODE DESCRIPTIONS.......................................51
FRICK VYPER™FAULT CODES .....................................52
INDEX..............................................................................61

VYPER™VARIABLE SPEED DRIVE
INSTALLATION - OPERATION - MAINTENANCE
100-200 IOM (FEB 09)
Page 3
PREFACE
This manual has been prepared to acquaint the owner and
service person with the INSTALLATION, OPERATION, and
MAINTENANCE procedures as recommended by Johnson
Controls-Frick for the Frick Vyper™Variable Speed Drive
unit.
For information about the functions of the Quantum™LX
Control panel, communications, specifications, and wiring
diagrams, please see the applicable and most current Frick
documentation.
It is most important that these units be properly applied to an
adequately controlled refrigeration system. Your authorized
Frick representative should be consulted for expert guidance
in this determination.
Proper performance and continued satisfaction with these
units is dependent upon:
CORRECT INSTALLATION
PROPER OPERATION
REGULAR, SYSTEMATIC MAINTENANCE
To ensure correct installation and application, the equipment
must be properly selected and connected to a properly de-
signed and installed system. The Engineering plans, piping
layouts, etc. must be detailed in accordance with the best
practices and local codes, such as those outlined in ASHRAE
literature.
The Frick Vyper™is a sophisticated piece of electronic con-
trol equipment. All safety precautions consistent with opera-
tion of high current and voltage electrical equipment should
be strictly enforced.
JOB INSPECTION
Immediately upon arrival examine all crates, boxes, and
exposed compressor and component surfaces for damage.
Unpack all items and check against shipping lists for any
possible shortage. Examine all items for damage in transit.
TRANSIT DAMAGE CLAIMS
All claims must be made by consignee. This is an ICC re-
quirement.Request immediate inspection by the agent of the
carrier and be sure the proper claim forms are executed.
Contact Johnson Controls-Frick, Sales Administration
Department, in Waynesboro, PA to report damage or short-
age claims. NOTE: Damage must be photographically
documented.
UNIT IDENTIFICATION
Each Vyper™has a unit identification label located on the
right side of the cabinet. The data plate contains the John-
son Controls-Frick Part Number, the unique Serial Number,
and the basic Model Number for the unit. In addition, the
data label also has electrical information pertinent to the
individual unit.
NOTE: When inquiring about the Vyper™or ordering
spare parts, please provide the MODEL Number and
SERIAL Number from the data plate.
Figure 1 - Vyper™Data Plate
Always wait 5 minutes afterVyper™
power is off to open the cabinet.
This time allows the capacitors to
discharge. Failure to do so could result in serious in-
jury or death.

VYPER™VARIABLE SPEED DRIVE
INSTALLATION
100-200 IOM (FEB 09)
Page 4
Installation
FOUNDATION
Each Vyper™Variable Speed Drive unit is shipped mounted
on a wooden skid, or mounted to the refrigeration package.
All shipping materials must be removed prior to unit instal-
lation. NOTE: Allow space for servicing both sides of the
Vyper™Cabinet.
The Frick Vyper™is offered in two mounting configurations.
The first mounting method is Package mounted. The units
are preassembled, prewired, and tested at the factory. Please
consult standard compressor package installation procedures
for this mounting method. The second mounting method is
Remote mounting where the Vyper™cabinet is mounted on
a steel stand specifically designed for the VSD. The primary
requirement for the Vyper™foundation is that it must be able
to support the weight of the cabinet and stand. In addition,
the remote stand and Vyper™cabinet must be located so
that no more than 50 feet of motor wiring length is needed
between the VSD cabinet and the package motor.
Anchor bolts are recommended to firmly mount the unit to the
base. Anchoring the cabinet to a firm foundation by proper
leveling and employment of fastening bolts is the best as-
surance for trouble-free installation. Package-mounted units
are premounted at the factory. Remote-mounted units have
fastener holes located on the bottom feet for floor anchors,
and on the rear stand legs for wall anchoring of the stand.
Foundations must be in compliance with local building codes
and materials must be of industrial quality. All electrical
conduits must be metallic, no PVC or other materials are
permitted.
RIGGING AND HANDLING
The Vyper™cabinet unit is best moved via lifting lugs on the
top sides of the cabinet. Special care must be exercised not
to damage the pump or peripheral equipment on the rear of
the cabinet.Never move the unit by pushing or forking against
the Vyper™Cabinet.
FRICK VYPER
™
MODELNUMBER DEFINITIONS
VYA_RGF_46
Input Voltage -46 (460V)
-50 (400V)
IEEE 519 Filter Installed (F)
Or Not (Blank)
Cooling Method Liquid (G)
Mounting Package (P)
Remote (R)
Drive Type VYA 305 HP
Drive Type VYB 254 HP
Drive Type VYC 437 HP
Drive Type VYD 362 HP
Model No. Frick P/N Description
VYA_PG_-46 720C0105G05 305 HP, Liquid Cooled, 460 Volts, Package Mount
VYA_RG_-46 720C0105G06 305 HP, Liquid Cooled, 460 Volts, Remote Mount
VYA_PGF-46 720C0105G07 305 HP, Liquid Cooled, w/ Filter, 460 Volts, Package Mount
VYA_RGF-46 720C0105G08 305 HP, Liquid Cooled, w/ Filter, 460 Volts, Remote Mount
VYB_PG_-50 720C0105G17 254 HP, Liquid Cooled, 400 Volts, Package Mount
VYB_RG_-50 720C0105G18 254 HP, Liquid Cooled, 400 Volts, Remote Mount
VYB_PGF-50 720C0105G19 254 HP, Liquid Cooled, w/ Filter, 400 Volts, Package Mount
VYB_RGF-50 720C0105G20 254 HP, Liquid Cooled, w/ Filter, 400 Volts, Remote Mount
VYC_PG_-46 720C0133G05 437 HP, Liquid Cooled, 460 Volts, Package Mount
VYC_RG_-46 720C0133G06 437 HP, Liquid Cooled, 460 Volts, Remote Mount
VYC_PGF-46 720C0133G07 437 HP, Liquid Cooled, w/ Filter, 460 Volts, Package Mount
VYC_RGF-46 720C0133G08 437 HP, Liquid Cooled, w/ Filter, 460 Volts, Remote Mount
VYD_PG_-50 720C0133G17 362 HP, Liquid Cooled, 400 Volts, Package Mount
VYD_RG_-50 720C0133G18 362 HP, Liquid Cooled, 400 Volts, Remote Mount
VYD_PGF-50 720C0133G19 362 HP, Liquid Cooled, w/ Filter, 400 Volts, Package Mount
VYD_RGF-50 720C0133G20 362 HP, Liquid Cooled, w/ Filter, 400 Volts, Remote Mount
UNIT (WITH FILTER) WEIGHTS (lb)
MODEL UNIT UNIT AS SHIPPED
305/254 1,240 1,669
437/362 1,362 1,791

VYPER™VARIABLE SPEED DRIVE
INSTALLATION
100-200 IOM (FEB 09)
Page 5
Read This First
Vyper Pre-Installation and Pre-Operation Checklist
The following items MUST be checked and completed by the installer prior to the arrival of the Frick Field Service Supervisor.
Details on the checklist can be found in the I.O.M. Certain items on this checklist will be re-verified by the Frick Field Service
Supervisor prior to the actual start-up.
Vyper Pre-Installation Site Check List
Before attempting to install a Vyper Drive system, please perform a site inspection to assure that the following requirements
are met. (Where Applicable)
-- Verify that the coolant (water or glycol) is available for the Vyper heat exchanger connections. Hard-pipe the coolant sup-
ply in accordance to all local and national piping codes. Sufficient coolant flow and temperature levels must be available to
the Vyper VSD at installation. When hard-piping the coolant supply, take into consideration that room is required in order to
add coolant to the system.
-- Verify that the compressor package temperature sensors are RFI suppression type (639A0151G01).
-- Incoming power cables must enter through the access plate supplied on the top left side of the unit. This access plate
MUST BE removed, entry holes made in the plate, and then reinstalled. Power cables MUST BE in accordance with local
and national electrical codes and current safety standards. See the Power Wiring section of the S100-200 or S100-210
IOM.
-- Verify that the power cable lengths from the Vyper to the compressor motor do not exceed 50 feet (15 meters) and the
location of the Vyper is suitable for mounting.
-- Verify that the motor is suitable for Inverter duty service: 20-100% Speed (12-60 hZ) or 50-100% (30-60 hZ) The motor
must have thermal protection per NEC 2005. (RTD, Thermostat, Thermistor).
-- Verify that the ambient temperature remains within the recommended operating range of 40-135°F (4-57°C). If the drive is
to operate below 40°F (4°C), provide enclosure ambient space heating.
-- Verify that all wiring is contained in metallic conduit. Use of PVC or other materials is not acceptable UNLESS shielded UL
rated power cable is used. Follow recommendations in this manual and Frick publication S90-400 SB.
-- Verify that all control power (120 VAC), communications / analog wiring, and 460 VAC power are in separate metallic con-
duits. Properly shielded and grounded analog cables are not required to be in EMT.
Vyper Pre-Operation Site Check List
Prior to Quantum™LX setup and starting operation of the Vyper Drive system, review the following checklist to ensure all instal-
lation requirements are met. (Where Applicable)
-- Environmental:
A: Cleanliness – Keep panel doors closed and ensure that construction debris is kept out of the cabinet.
B: Use the conduit knockouts provided. Avoid metal shavings in the drive enclosure.
C: Clean out all debris with a low power magnet or a vacuum cleaner.
-- Mounting: Verify that the Vyper Drive is properly mounted: to the floor or wall for remote mounts or to the package for
package mounted units.
-- Verify that the primary water or glycol coolant supply is connected to the heat exchanger at the recommended flow and
temperature recommendations.
-- Wiring (use Frick publicaton S90-400 SB as a guideline):
A: Wiring from the drive to the motor must be enclosed in a grounded metal conduit even if poured in a concrete floor.
Use of PVC or other materials is not acceptable UNLESS shielded UL rated power cable is used.
B: Separate grounded metal conduits must be provided for input power, output power, and control wiring. Failure to provide
separate conduits could result in disruption of other electrical devices due to harmonics and RFI / EMI generated in the
drive.
C: Bond all conduit to the cabinet.
D: Protect control wires (analog and digital) from noise. Use properly shielded and grounded analog control wires. Digital
and analog control wiring must be separate from each other as well as separate from 3 phase control and power wiring.
Noisy input signals will cause erratic drive operation.
E: Verify control wiring has been connected from the Quantum™LX panel to the Vyper in accordance with the engineering
drawings for the specific installation.
F: Verify power wiring has been connected at the correct connection points and properly seated in accordance with the
provided engineering drawings for the specific installation.
-- Drain the shipping coolant from the Vyper and properly dispose. Replace with running coolant (pink) and purge air from
the cooling system. Refer to the “Adding and Replacing Coolant” portion of the S100-200 or S100-210 IOM.

VYPER™VARIABLE SPEED DRIVE
INSTALLATION
100-200 IOM (FEB 09)
Page 6
-- Apply power to the Vyper Drive system.
A: Confirm dipswitches on the Vyper Logic Board are properly set. Refer to the “VSD Logic Board Setup” section of the
S100-200 or S100-210 IOM.
B: Verify no problems exist with the unit power supply connections.
C: Verify no problems exist with the boot-up of the Quantum™LX panel and control system.
D: Set the FLA ratings on the Vyper Logic Board as per job site requirements.
E: Set up the Quantum™LX panel in accordance with job site requirements. Refer to Refer to Quantum™LX Panel Setup in
the Operation portion of the S100-200 or S100-210 IOM.
F: Confirm operation of internal cooling fans.
G: Confirm operation of the coolant pump.
H: Confirm operation of the Vyper motorized coolant temperature control mixing valve.
I: Confirm wiring, operation, and correct rotation of motor blower fans if present.
Pre-startup Inspection
After installation is complete, use the following as guide
to checks items D – I, under in the Applying power to the
Vyper™Drive system section, in the preceding Vyper™Pre-
Operation Site Checklist. Any changes to factory setpoints,
needs to be approved by Frick®. Failure to obtain approval
may void warranty. Read all steps thoroughly and contact
the factory with any questions before proceeding.
1. With power off - In the drive, remove wire 624 (com-
pressor run) on the drive side of control wiring terminal
strip.
2. Remove wire 675 (oil pump run) if the unit is equipped
with an oil pump.
3. Close the drive, turn on the disconnect using the oper-
ating handle on the door.
4. Once the Quantum™LX panel has booted go to the level
2 operating session.
5. Confirm communications between the Vyper™drive
and the Quantum™LX by going to the Vyper™screen.
If there are base-plate temperature readings that are
approximate to ambient and a value is displayed for the
JOB FLA communications is confirmed. Compare the
Job FLA value to the panel test report Special Instruc-
tions section to ensure they match. If the JOB FLA is not
listed on the panel test report, use the JOB FLA tables
in this manual to calculate.
6. Go to the motor setpoints screen to check the motor
amps safeties, relative to the motor and drive combina-
tion. If these values are not correct use the tables in this
manual to calculate what they should be.
7. Verify proper operation of the motorized coolant mixing
valve on the back of the drive.
 • LocatetheCoolantmixingvalveonthebackofthe
drive, remove the cover from the motor and check
that the dip-switches are set as 1 ON, 2 OFF, 3 ON
& 4 OFF. If a change needs to be made, the power
must be cycled at the panel for the change to be in
effect.
 • GotoPage2ofPIDsetpoints,fortheVyperCoolant
PID. Ensure the setup is per the setup in this manual.
If it is, set the Control as Always and the Direction
as Reverse. Check the indicator disc or arrow on the
shaft between the valve and the actuator motor that
it is operating. Once it has moved to one end of the
stroke, change the Direction back to Forward. This
should move the Indicator Disc or Arrow back to the
other end of the stroke.
 • SettheControlbacktoRunningandsubmit.
8. Using a screw driver at the operating handle on the
door, open the drive leaving the power on, so that the
ride side panel can be opened providing access to the
logic board.
9. Re-secure the left side panel.
10. If the Job FLA setting is not correct this can now be set
using the Job FLA pot on the control logic board. Moni-
tor the value on the Vyper screen of the Quantum™LX to
determine when the value is properly set.
11. Test the internal fan and coolant circulation pump op-
eration by removing the P2 plug from the J2 connector
on the control logic board. Removing this plug will start
these devices.You will hear the fans run. The circulation
in the coolant loop should be seen through the clear
hose, proving the circulation pumps operation. Recon-
nect the P2 plug to the J2 connector to turn off these
devices. Doing this test will create a Low Inverter Base-
Plate Temperature shutdown on the Quantum™LX that
will need to be cleared.
12. Close the drive completely and with power still on, do a
simulated run of the compressor by pressing the manu-
al start button on the Quantum™LX. This should engage
the blower motors on the compressor drive motor to
verify proper rotation and operation of the blower mo-
tors. Rotational arrows on the fan housing shows proper
rotation, correct if necessary by changing any two wires
at the blower motor connection box with power locked
out.
13. Turn power off with the operating handle on the door of
the drive. Open the drive and check to ensure the panel
is de-energized. Carefully replace wires 624 and 675.
Tighten to 12 lb. In.

VYPER™VARIABLE SPEED DRIVE
INSTALLATION
100-200 IOM (FEB 09)
Page 7
GENERAL DESCRIPTION
The Vyper™serves as the motor starter and capacity control
for a Frick screw compressor. It controls capacity by reducing
compressor speed and optimizing the compressor efficiency
at all loads.
The Vyper™varies the screw compressor speed by control-
ling the frequency and voltage of electrical power supplied
to the compressor motor. Unlike general purpose variable
speed drive units, the Vyper™is factory calibrated for maxi-
mum performance with Frick screw compressors. Because
of the specific application to commercial building systems,
the Vyper™has been designed to be electronically compat-
ible with other electronic equipment that typically operates
in the same facility.
The Vyper™can be cooled by two coolants: water or Glycol.
Both coolants can be used with either package mounted or
remotely mounted Vyper™units. Power wiring and some pip-
ing between the facility and Vyper™must be field supplied.
ELECTRICAL LIMITS
Frequency Supply Voltages VAC
60 Hz 440/460/480
50Hz 380
Supply voltage to the Vyper™must be 440/460/480V @ 60 Hz
or 380V @ 50 Hz.If a building has higher or lower supply volt-
age, consider a step-up or step-down transformer. Extreme
operating voltage ranges from a minimum of 414 VAC to a
maximum of 508 VAC , 3-phase, 60 Hz, or 342 to 423 VAC,
50 Hz.The maximum allowable voltage unbalance is 3%.The
main transformer should be sized so that the transformer
voltage does not sag more than 5% when subjected to load
excursions. The steady-state operating voltage should be
within the range of 414 to 508 VAC, 3 phase, 60 Hz, or 342
to 423 VAC, 3 phase, 50 Hz.
Frequency Operating Voltage Limits Phase
Min Max
60 Hz 414 508 3
50 Hz 342 423 3
Frequency Minimum Voltage Limits VAC
60 Hz 391
50 Hz 340
Unit controls may shut down with power interruptions up to
one cycle. Interruptions greater than one cycle will result in
a shutdown. A voltage dip below 391V, 60 Hz or 340V, 50 Hz
constitutes a power interruption.
CURRENT LIMITS
HP Freq Voltage RMS current LRA max
437 HP 60 Hz 460V 565A 3810A
362 HP 50 Hz 400V 565A 3895A
305 HP 60 Hz 460V 380A 2598A
254 HP 50 Hz 400V 380A 2727A
The drive is capable of outputting the rated full load cur-
rent over the operating frequency range of the drive. The
unit is started with the compressor fully unloaded until the
frequency reaches the minimum operating frequency range.
In addition, the drive is capable of operating without a load
for ease of service.
• Overload: 105% of full load for 7 seconds.
• Efciency:98%Typicalatratedloadandfrequency.
INPUT SHORT CIRCUIT LIMITS
The Vyper™can be affected by specific events, which can
decrease product life, and cause component damage related
to the input power conditioning.
• Thepowersourceexperiencesinterruptions.
• Thepowersystemhaspowerfactorcorrectioncapacitors
switched in and out of the system by either the power
supplier or the end user.
• Thepowersourcecontainsvoltagespikeswhichcouldbe
caused by equipment on the same line or natural phenom-
ena such as electrical storms.
If one or more of these conditions exist it is recommended
that the end user install minimum impedance between the
Vyper™and the power source. A transformer or other similar
device can supply the impedance.
Horsepower Circuit Breaker Rating (Amps)
305 / 254 400
437 / 362 600
Horsepower Input Short Circuit Rating
305 / 254 65,000 Amps @ 480 Volts
437 / 362 100,000 Amps @ 480 Volts
Drive Size Circuit Breaker Lug Sizes
305 / 254 HP 2/0 to 350 KCMIL per phase
437 / 362 HP 400 to 500 KCMIL per phase or
3/0 to 350 KCMIL per phase
A 100% rated input power circuit breaker with ground fault
protection sized by the National Electrical Code or UL require-
ments with external lockable operator is supplied as standard.
The circuit breaker is rated at 400A for 305 / 254 HP units
and 600A for 437 / 362 HP units. The maximum per phase
Total Harmonic Distortion of the input current shall not exceed
30% at 100% rated power. The Frick®Vyper™drive typically
produces between 20-30% THD.
An IEEE 519 Harmonic Filter is required if theTHD of the input
current at the installation cannot exceed 8%. The IEEE 519
Harmonic Filter is highly recommended for crucial applications
such as hospitals, computer networks, airports, etc.
ENVIRONMENT
The Vyper™is housed in a NEMA 4 indoor class enclosure.
The electronics are sealed against ambient conditions,
however it is recommended that the end user employ good
standard practices in regard to moisture exposure and ex-
treme temperature conditions. It is recommended that the
Vyper™be operated within the temperature range of 40°F
and 135°F.
Recommended Temperature Limits (°F)
Min Max
Storage -4 158
Operating 40 135

VYPER™VARIABLE SPEED DRIVE
INSTALLATION
100-200 IOM (FEB 09)
Page 8
The Vyper™can be used at altitudes up to 10,000 ft without
derating for units without the IEEE 519 Harmonic Filter. A
Vyper™with the Harmonic Filter included can be operated up
to 5,000 ft without derating. Due to less dense air at higher
altitudes, the maximum entering condenser water tempera-
ture, or supply cooling water, must be reduced as shown in
the following table.
Altitude MAX Entering
Water Temp
Vyper Coolant
Control Setpoint
0 ft 100.0°F / 37.8°C 110°F / 43.3°C
5,000 ft 95.6°F / 35.5°C 105°F / 40.5°C
10,000 ft 89.6°F / 32.0°C 100°F / 37.8°C
15,000 ft 82.3°F / 27.9°C 95°F / 35.0°C
Remotely mounted units must have the distance limited
between the Vyper™and the compressor motor to 50 feet
of wire or less. The problems that may be encountered with
wire lengths greater than 50 are as follows;
• VSDpicksupinterferenceinthecontrolwiring,causing
the VSD to intermittently trip.
• Voltage drop becomes excessive, rising above the 5%
voltage drop limit.
• Peak voltage applied to the motor windings becomes
excessive and may cause premature motor failure.
• AdV/dt filter must be installed on remote-mounted units
with motor power lead lengths between 3 to 50 feet.
Adequate service clearances, including door swing, must
be maintained around the Vyper™. Care should be taken to
ensure that the Vyper™and it’s associated piping and wiring,
do not obstruct the access to service areas.
Liquid supply cooling temperature requirements vary between
Water and Glycol cooled units.The required flow rate is based
on the maximum temperature of the coolant to be used.
COOLANT TEMPERATURE LIMITS
Entering Coolant Temperature Limits (Deg F)
Min Max
Water 40 105
Glycol 35 105
General Coolant Requirements
• Vyper™Liquid-cooled models provide 1½ NPT threaded
connections IN and OUT of the Heat Exchanger.
• Anupstreamstrainerisrecommendedtostopparticulate
matter from entering the heat exchanger. The strainer
should be cleaned several times during the first twenty-four
hours of operation.
• Sufcientclearancetoperformnormalserviceandmain-
tenance work should be provided around the entire unit.
• FlowratesareasshowninthechartinFigure2.
Water Recommendations
• JohnsonControls-Frickrecommendsaclosed-loopsystem
for the water side of the heat exchanger.
• WerecommendawaterpHlevelbetween6.0and7.4for
proper heat exchanger life.
NOTE: To reduce the potential of fouling the heat ex-
changer, recommended minimum flow rate is 5 GPM.
Glycol Recommendations
• Propylene Glycol is to be used exclusively. Glycol concen-
tration must be 50% or less by volume.
Figure 2 - Flow Rates

VYPER™VARIABLE SPEED DRIVE
INSTALLATION
100-200 IOM (FEB 09)
Page 9
Figure 4 - Pressure Drop vs. Flow Rate
HEAT EXCHANGER PRESSURE DROP
In order to adequately size piping and booster pump require-
ments, the pressure drop of the coolant across the heat
Figure 3 - Minimum Flow Rates - GLYCOL
exchanger must be known. Figure 4 provides installation
designers with pressure drop reference for different mixtures
of propylene glycol and water.

VYPER™VARIABLE SPEED DRIVE
INSTALLATION
100-200 IOM (FEB 09)
Page 10
POWER WIRING
Power wiring conductor and ground wiring for the Vyper™
must be sized in accordance with local and national electrical
codes, in addition to applicable industrial safety regulations.
Copper wire is required for all power wiring connected to the
system. Aluminum wiring is NOT acceptable.
GROUNDING
Grounding is the most important factor for successful opera-
tion and is also the most overlooked. The NEC states that
control equipment may be grounded by using the rigid conduit
as a conductor.This worked for the earlier relay systems, but
it is not acceptable for electronic control equipment. Conduit
is made of steel and is a poor conductor relative to a copper
wire. Electronic equipment reacts to very small currents and
must have a good ground in order to operate properly; there-
fore, copper grounds are required for proper operation.
The three phase power brought into the plant must also
have a ground wire, making a total of four wires.
Due to the noise (EMI) that is generated by VFDs between
the drive output and the motor, increased ground conductor
sizing is necessary to effectively steer this noise to earth
ground.
Required Main Grounding Conductor Size:
305 / 254HP = / > #1-AWG (Copper)
437 / 362HP = / > 2/0 (Copper)
Main ground conductors may be multiple with the total
rating being equal to or greater than the required. NOTE:
Grounds must be stranded copper and insulated.
In many installations that are having electronic control prob-
lems, this essential wire is usually missing. A good ground cir-
cuit must be continuous from the plant source transformer to
the electronic control panel for proper operation. See Figure
5. Driving a ground stake at the electronic control will cause
additional problems since other equipment in the plant on
the same circuits will ground themselves to the ground stake
causing large ground flow at the electronic equipment.
Figure 5 - Ground Circuit
FUSES AND CIRCUIT BREAKERS
The Frick Vyper™can be installed by using either input power
fuses or a circuit breaker. Either configuration must conform
to industrial safety regulations and both local and national
electrical codes.
ACCEPTABLE CABLE TYPES
National and local codes and standards and applicable
safety regulations govern the installation of electrical cable.
The installation must comply to the specifications regarding
disconnect devices, conductor sizes, wire types, and circuit
protection.
Unshielded cable is acceptable if it can be separated from
sensitive circuitry. Allow a spacing of 12 inches for every
33 feet of length. In all cases, long parallel runs must not
be used. If power wiring is unshielded, it needs to be
in metallic or PVC metallic conduit. Do not use a cable
insulation thickness of 15 mils (0.015 in) or less. Use copper
wire only; NO aluminum power wiring is permitted. Wire
gauge requirements and recommendations are based on 75
degrees C (167°F). Wire gauge is not to be reduced if using
higher temperature wire.
An acceptable example of unshielded wiring is THHN or
TWHN or similar wire.This wiring is only acceptable in dry en-
vironments, provided adequate free air space is provided. Do
not use THHN or similar coated wire in wet or damp locations.
The wire must have at least 15 mils (0.015 in) of insulation
and not have large variations in insulation concentricity.
Shielded cable is superior to the unshielded cable in that it
provides all the benefits of the unshielded but also prevents
against AC drive noise by the use of braided copper shield.
Shielded cable should be used in sensitive installations
such as weight scales, capacitive proximity switches, and
other devices that may be affected by stray electronic noise.
Installations with multiple VSDs should also use shielded
power cable. Shielded cable may also reduce shaft voltage
and bearing currents in some applications.
The general specification of the wire is also dictated by the
environment in which it is used.The Frick Vyper™is a NEMA 4
rated VSD and should also have power cable selection to
withstand the local environment.Moisture level, temperature,
flexibility and chemical resistance are all factors which need
to be considered in power wire selection.
A braided shield should be included and have at least 75%
coverage. Also an additional foil shield can enhance noise
containment.The CONTROL WIRING section describes the
factory recommended power cables.
CONTROL WIRING
Vyper™packaged systems have all required sensors and
transducers factory mounted.Remote systems must be wired
at the installation site.
Here are some important points to consider for control wiring:
• Use Copper wire only. Use of Aluminum wiring is not
permitted. Wire gauge requirements are based on 75°C.
DO NOT reduce wire gauge when using higher tempera-
ture wire.
• Wirewithaninsulationratingof600Vorhigherisrecom-
mended.
• Controlandsignalwiresshouldbeseparatedfrompower
wires by at least 1 foot.

VYPER™VARIABLE SPEED DRIVE
INSTALLATION
100-200 IOM (FEB 09)
Page 11
Recommended Analog signal wire
0.750 mm2 (18AWG) twisted pair, 100% shield with drain.
If the wires are short and contained within a cabinet which
has no sensitive circuits, the use of shielded wire may not
be necessary, but is always recommended.
Recommended Digital signal wire
Unshielded Per US NEC or applicable electrical code.
Shielded
0.750 mm2 (18AWG), 3 conductor, shielded.
TRANSFORMERS
In most installations the transformer that supplies the refrig-
eration equipment is the same transformer that powers most
of the other loads in the same building. These transformers
are generally very large relative to the refrigeration load.
However is some case there will be an individual transformer,
sized and dedicated to the refrigeration system alone. For
example, when a 460 VAC VSD is used and the existing
power is 208V, a 208 V to 460V step-up transformer should
be installed.
Such transformers must be specially sized whenever a
Vyper™is involved. Failure to properly size the transformer
may result in unreliable operation. NOTE: Contact the fac-
tory or power provider for transformer sizing.
NOTE: Transformer must be K4 rated.
When installing a Vyper™on an existing transformer, the
total KVA requirement of the VSD controlled system and all
branch circuits must be considered. The transformer sup-
plying the Vyper™shall be sized such that the transformer
voltage does not sag more than 5% when subjected to load
excursions. The steady-state operating voltage should be
within the range of 414 to 508 VAC, 3 phase 60 Hz, or 342-
423 VAC, 3 phase, 50 Hz.
KVA Impedance Weight (lb)
175 5%-6% 1100
220 5%-6% 1470
275 5%-6% 1750
330 5%-6% 1990
440 5.5% - 6.5% 2700
550 5.5% - 6.5% 3100
660 5.5% - 6.5% 3600
750 6% - 7% 4600
880 6% - 7% 5300
990 6% - 7% 5800
1250 6.5% - 7.5% 6200
1500 6.5% - 7.5% 6800
1750 6.5% - 7.5% 7500
2000 6.5% - 7.5% 8200
Johnson Controls offers a line of Recommended Vyper
VSD Transformers. These transformers have the following
features:
• Steelcoreforlowuxdensityoperation.
• StandardK-4rating.K-13,K-20,K-30isavailableasan
option.
• UL/CSAcertied.
• 600Voltclass
• Primary Voltage: 208V, 230V, 460V, 575V
• Conductors,40°Cambient
• Sinusoidal loading not to exceed K-4
• Secondary Voltage: 460
• NEMA2housing
• 60Hz,150°Ctemperaturerise,220°Cinsulation
• Taps:1plus,1minus@5%
POWER FACTOR CAPACITORS
Power factor correction capacitors are not required since the
Vyper™has a 0.95 minimum power factor at all operational
loads and conditions. Capacitors can be located at one or
several places on a distribution system. Solid-state motor
controllers may not run, or have difficulty starting in that
scenario. The degree of malfunction depends on the size of
the capacitors, the distance away for the solid-state controls,
and the size of the building supply transformer.
With a VSD there is no way to know in advance whether the
capacitors will cause interference. When aVSD is started and
there are problems cause by power factor capacitors, it will be
necessary to remove those capacitors. In some installations,
capacitors are switched on line as power factor drops.
The switching transients created by connecting and discon-
necting power factor capacitors may cause theVyper™to drop
off-line. High voltage power factor capacitors may be located
on the primary side of the transformer supplying power to
the Vyper™without causing any malfunction to equipment
on the secondary side.
SOFT-START SEQUENCE
At start-up, both the motor and slide valve begin to load to
a preset value.
NOTE: There is a 30 second delay at initial start-up to
charge the capacitors of the Vyper™.This delay does not
occur in Standby mode, only on initial start-up.
The Frick slide valve will load to the Variable Speed Minimum
Slide Valve Position setpoint, and the Vyper accelerates to the
speed corresponding to the Minimum Drive Output setpoint.
From this point the slide valve position and motor speed are
controlled by the Capacity Control setpoints.
During start-up, the VSD varies the voltage and frequency
to maintain the same proportion that exists between the two
at design conditions.The required inrush current to start the
motor never exceeds the FLA rating of the given motor and is
typically only 10-20% of FLA.Mechanical forces on the motor
windings and motor heating are 20% to 50% lower than with
a mechanical starter. This results in less mechanical shock
to the system and longer motor life.
INTERFACING ELECTRICAL EQUIPMENT
There are many low voltage DC signals in the Vyper™which
may be picked up from other electrical devices or wiring in the
vicinity of the electronic controls. It is essential that non-VSD
wiring is not routed through the Vyper™cabinet. It is equally
important that no external equipment is tied to the Vyper™
control wiring in any way. A control system should never be
wired to the Vyper™circuitry. Never use 120V supply to feed
the VSD control wiring. The Vyper™has it’s own internal
power supply. Using an external supply may damage the
Vyper™and may also cause hazardous working conditions
for service and operating personnel.

VYPER™VARIABLE SPEED DRIVE
INSTALLATION
100-200 IOM (FEB 09)
Page 12
INTERFERENCE WITH ELECTRONIC
EQUIPMENT
RFI / EMI are acronyms for Radio Frequency Interference
and Electro Magnetic Interference. Any electronic device
which switches currents at high speed is capable of generat-
ing RFI and EMI. Some typical sources are computers, light
dimmers, and motor speed controls. RFI refers to electrical
fields, which are transmitted through the air. EMI refers to
electrical currents, which are conducted in wiring connected
to the device.
The Vyper™generates both RFI and EMI. Most RFI energy
generated by Vyper™is contained within it’s cabinet.The EMI
energy is conducted back in to the power line, and may be
capable of causing interference to other electronic equipment
that is powered by the same electrical distribution system.
VSDs are used successfully in many installations, which uti-
lize sensitive electronic equipment. However, in some highly
sensitive cases, there may be electronic equipment that is
affected by Vyper™originated EMI. For those cases, an op-
tional Harmonic Filter is recommended to reduce conducted
EMI levels by reducing current harmonics to limits defined by
the IEEE 519-1992 standard. The filter is located within the
Vyper™cabinet and is factory installed and tested. The filter
can also be retrofitted to an existing Vyper™.
The IEEE 519 filter is required on all hospital applications, and
is strongly recommended for any installation with sensitive
electronic equipment connected to the electrical distribution
system. The filter is also required whenever a local utility
places a limit on current distortion for an electronic device.
The IEEE 519 harmonic filter is filter is required where total
harmonic current distortion must be 8% or less.
SYSTEM OPERATING CONDITIONS
Refrigeration systems considered for Vyper™application
must be in good operating condition. A site survey should be
completed with the help of a trained Frick service technician.
The technician will review the condition of the equipment and
recommend actions that must be taken to ensure that the
equipment is in good operating condition. This survey must
be taken and required repairs made prior to the application
of the Vyper™.
PNEUMATIC CONTROLS
Pneumatic controls must be replaced with electronic controls
to be compatible with the Vyper™and the Quantum LX™
control panel.
VYPER™SYSTEM OVERVIEW
The Frick Vyper™Variable Speed Drive is a liquid-cooled,
transistorized, PWM inverter in a highly integrated package.
This unit is factory designed to mount either remotely on a
stand or integrally to the compressor package. The power
section of the drive is composed of four major blocks:
• ACtoDCrectiersectionwithintegratedprecharge circuit
• DClinkltersection
• Three-phaseDCtoACinvertersection
• Outputsuppressionnetwork
An electronic circuit breaker with ground fault sensing con-
nects the AC line to an AC line choke and then to the DC
converter.The line choke will limit the amount of fault current
so that the electronic circuit breaker is sufficient for protecting
the Vyper™input fuses. (See schematic, Figure 8)
THE AC TO DC SEMI-CONVERTER uses 3 Silicon Con-
trolled Rectifiers (SCRs) and 3 diodes. One SCR and one
diode are contained in each module. Three modules are
required to covert the three-phase input AC voltage to DC
voltage (1SCR-3SCR).The modules are mounted on a liquid-
cooled heatsink. The use of the SCRs in the semiconverter
configuration permits precharge of the DC filter link capacitors
when the chiller enters the prelube cycle. It also provides fast
disconnect from the AC line.The SCR trigger board provides
the turn on and turn off commands for the SCRs.The Vyper™
logic board provides commands to the SCR trigger board
during precharge.
THE DC LINK FILTER SECTION of the drive consists of a
series of electrolytic filter capacitors (C1-C6). These capaci-
tors provide a large energy reservoir for use by the DC to
AC inverter section of the Vyper™. The capacitors are con-
tained in the Vyper™Power Unit. “Bleeder” resistors (RES1
and RES2) are mounted on the side of the Power Unit to
provide a discharge of the DC Link filter capacitors after
power is removed.
THE DC TO AC INVERTER SECTION of Vyper™serves
to convert the DC voltage back to AC voltage at the proper
magnitude and frequency as commanded by the Logic
board. The inverter section is composed of one power unit.
This power unit is composed of very fast switching transis-
tors known as an Insulated Gate Bipolar Transistor (IGBT)
module (1MOD) mounted on the same liquid-cooled heatsink
as the semiconverter modules, the DC Link filter capacitors
(C1-C6), a semiconverter, and a Vyper™Gate Driver board.
This board provides the turn on, and turn off commands
to the IGBT’s output transistors. The Vyper™Compressor
Drive Logic board determines when the turn on, and turn off
commands should occur. The gate driver board is mounted
directly on top of the IGBT module, and it is held in place with
mounting screws and soldered to the module.This improves
reliability by eliminating the gate wires and their possible
failure. In order to minimize the parasitic inductance between
the IGBT module and the capacitor bank, copper plates which
electrically connect the capacitors to one another and the
IGBT modules are connected together using a “laminated
bus” structure.This “laminated bus” structure forms a parasitic
capacitor which acts as a low valued capacitor, effectively
canceling the parasitic conductance of the copper plates.To
further cancel parasitic inductances, a series of small film
capacitors (C7-C9) are connected between the positive and
negative plates at the IGBT module.
THE VYPER™OUTPUT SUPPRESSION NETWORK is
composed of a series of capacitors (C10-C12) and resistors
(3RES-8RES).The job of the suppressor network is to reduce
the time it takes for the output voltage to switch as seen by
the motor. It also limits the peak voltage applied to the mo-
tor windings, as well as the rate of change of motor voltage.
These are problems commonly associated with PWM motor
drives such as stator winding end turn failures and electrical
fluting of motor bearings.
Other sensors and boards are used to convey information
back to the Vyper™and provide safe operation of the variable
speed drive.The IGBT transistor module contains a thermis-
tor temperature sensor that provides temperature information
back to the logic board via the gate driver board. The AC to
DC semiconverter heat sink temperature is also monitored
using a thermistor temperature sensor (RT2). The uses the
three resistors on the board to provide a safe impedance

VYPER™VARIABLE SPEED DRIVE
INSTALLATION
100-200 IOM (FEB 09)
Page 13
Figure 6 - Vyper™Elementary Wiring Diagram
NOTE: Drawings for specific units can be
found in the door of the Vyper drive or
check with Frick Engineering department.

VYPER™VARIABLE SPEED DRIVE
INSTALLATION
100-200 IOM (FEB 09)
Page 14
between the DC link filter capacitors located on the power
unit and the logic board. This provides the means to sense
the positive, midpoint, and negative voltage connection points
of the VSD’s DC Link. Three current transformers (3T-5T)
monitor the output current from the Vyper™power unit and
are used to protect the motor from over-current situations.
A HARMONIC FILTER (See Figure 8) and high frequency
trap may be added to a Vyper™system. The harmonic filter
is designed to meet the IEEE Std 519 -1992, “IEEE Recom-
mended Practices and Requirements for Harmonic Control
in Electrical Power Systems”. The filter is offered as a means
to “clean up” the input current waveform drawn by the Vyper™
from the AC line, thus reducing the possibility of causing elec-
trical interference with other sensitive electronic equipment
connected to the same power source. (See Figure 8) The
Harmonic filter provides an additional benefit that corrects
the system power factor to almost unity. The Harmonic filter
should be used on all systems that require total harmonic
current distortion to be 8% or less. It is also highly recom-
mended for critical applications such as hospitals, airports,
and radar installations.
The power section of the Harmonic Filter is composed of
three major blocks:
• Prechargesection,
• Three-phaseinductor
• FilterPowerUnit
THE FILTER PRECHARGE SECTION consists of three
resistors (9RES-11RES), and two contactors, precharge
contactor 1M and a supply contactor 2M.The precharge net-
work serves two purposes: to slowly charge the DC link filter
capacitors associated with the filter power unit and to provide
a means of disconnecting the filter power components from
the AC line. When the system is turned off, both contactors
are dropped out and the filter power unit is disconnected from
the AC line. When the system starts to run, the precharge
resistors are switched into the circuit via contactor 1M for a
fixed time period of 5 seconds.This permits the filter capaci-
tors in the filter power unit to slowly charge.
After the 5-second time period, the supply contactor is pulled
in, and the precharge contactor is dropped out, permitting
the filter power unit to completely charge to the peak of the
input power mains. Three power fuses (8FU-10FU) connect
the filter power components to the AC line. Very fast semi-
conductor power fuses are utilized to ensure that the IGBT
transistor module does not rupture if a failure were to occur
on the DC link of the Filter Power Unit.
THETHREE-PHASE INDUCTOR provides some impedance for
the filter to “work against”. It effectively limits the rate of change
of current at the input to the filter to a reasonable level.
THE FILTER POWER UNIT is the most complicated power
component in the optional filter. Its purpose is to generate
the harmonic currents required by the Vyper™AC-to-DC
converter so that these harmonic currents are not drawn
from the AC line. The Filter Power Unit is identical to the
Vyper™Power Unit, except for two less capacitors in the filter
capacitor bank (C13-C16), a smaller IGBT module, (2MOD),
mounted to a liquid-cooled heat sink, and a Harmonic Filter
gate driver board. The Harmonic Filter Gate Driver board
provides turn on and turn off commands as determined by the
Harmonic Filter Logic board.“Bleeder” resistors are mounted
on the side of the Filter Power Unit to provide a discharge
path for the DC Link filter capacitors. In order to counteract
the parasitic inductances in the mechanical structure of the
filter power unit, the filter incorporates “laminated bus” tech-
nology and a series of small film capacitors (C23-C25). The
technology is identical to that used in the DC to AC inverter
section of the drive.
Other sensors and boards are used to convey information
back to the Filter Logic board, and provide safe operation of
the Harmonic filter. The IGBT transistor module contains a
thermistor temperature sensor (RT3) that provides tempera-
ture information back to the Harmonic Filter Logic Board via
the Harmonic Filter Gate Driver Board. This sensor protects
the Filter Power Unit from over-temperature conditions. A
Bus Isolator board is used to ensure that the DC link filter
capacitors are properly charged. Transformers DCCT1 and
DCCT2 sense the current generated by the optional filter.
These two output current sensors are used to protect the
filter against an over current or overload condition.Two input
current transformers 6T and 7T sense the input current drawn
by Vyper™AC to DC converter.
LINE VOLTAGE ISOLATION BOARD provides the AC line
voltage information to the Filter Logic Board.This information
is used to determine a low bus voltage condition. The Bus
Isolation board incorporates three resistors to provide a safe
impedance between the DC Filter capacitors located on the
filter power unit and the Filter Logic board. It provides means
to sense the positive, midpoint, and negative connection
points of the filter’s DC link.
Figure 7 - Comparison of Unfiltered/Filtered Input Current

VYPER™VARIABLE SPEED DRIVE
INSTALLATION
100-200 IOM (FEB 09)
Page 15
Figure 8 - Harmonic Filter Elementary Wiring Diagram
NOTE:Typical! Check with engineering for
latest drawings.

VYPER™VARIABLE SPEED DRIVE
INSTALLATION
100-200 IOM (FEB 09)
Page 16
THE “TRAP” FILTER is standard on all Frick Vyper™units
that contain the Harmonic Filter. The trap filter is composed
of a series of capacitors, inductors, and resistors. The trap
filter is used to reduce the effects of the PWM switching
frequency of the filter (20kHz) on the AC line.
CONFIGURATION:
The Frick Vyper™is internally cooled with a factory calibrated
liquid cooling circuit which offers many advantages over tradi-
tional air-cooled systems.The liquid circuit provides precisely
controlled coolant temperatures to the heat generating com-
ponents and delivers coolant into locations that no air-over
fan could penetrate.The Vyper™liquid-cooling arrangement
performs independently of fluctuating ambient conditions.The
NEMA 4 Indoor-rated cabinet seals the internal electronics
and piping from corrosive refrigerant vapors while provid-
ing superior cooling for the internal electronic components.
Efficient liquid cooling also allows for smaller cabinet size
and longer component life than traditional air-cooled units.
Either plant condenser water or a facility supplied Glycol loop
subsequently removes the heat in the coolant via the heat
exchanger located at the back of the cabinet.
VYPER™COOLING LOOP
While the compressor is running, the Quantum™LX control
panel monitors the temperature of Vyper™drive coolant.With
this information, the Quantum™LX delivers a 4-20 mA signal
to the 3-way mixing valve, based on the setpoints of a PID
loop output from the Quantum™LX. This signal will maintain
the Vyper™coolant temperature at the control setpoint for
the PID loop. This setpoint will be set at 110°F at the factory.
There are also low and high temp alarms and shutdowns as-
sociated with the Vyper™coolant temperature reading.These
wil also be factory set for a Low Temp. alarm and shutdown
at 85°F and 80°F with a 90 second delay, when running.
The High Temp. Alarm and shutdown will be factory set at
125°F and 130°F with a 30 second delay when running. If
the Vyper™coolant temperature drops too low, condensation
may occur, damaging vital electronic components.In addi-
tion to controlling the Vyper™cabinet cooling system, the
Quantum™LX panel also monitors four temperatures from
the Vyper™cabinet. If any of these temperatures rise too
high, the Quantum™LX panel will go to a Stop Load condi-
tion, preventing either the slide valve position or motor speed
from increasing. If the temperature continues to rise, the
Quantum™LX panel will next go to a Force Unload condition.
In this situation, the slide valve will unload to lower the motor
torque required, in an effort to drop the temperature in the
panel. Below is a chart showing the Stop Load and Force
Unload temperatures as well as the temperatures where the
Vyper™cabinet will automatically shut down.
Location Stop Start Force Unload Shutdown
Base plate
Temp Converter 160°F 165°F 175°F
Heat Sink Temp 155°F 160°F 170°F
Harmonic Filter 130°F 135°F 145°F
Base plate Temp 160°F 165°F 175°F
VYPER™CONFIGURATIONS - Liquid Cooled
HP Freq A B C D E F G H J K L M N
254 50 51 42.5 4.25 47 51 5.5 17 36 70 22.5 20.4 16.4 2
305 60 51 42.5 4.25 47 51 5.5 17 36 70 22.5 20.4 16.4 2
362 50 58 49.5 4.25 54 58 5.5 19.1 41 75 24.6 22.5 18.5 2
437 60 58 49.5 4.25 54 58 5.5 19.1 41 75 24.6 22.5 18.5 2
Remote-mounted configuration is shown. Pack-
age-mount dimensions are identical except for
the elimination of the stand.Coolant connections
to the Heat Exchanger are 1½ NPT.
NOTE: Considering all applicable codes regarding
spacing and clearance, be sure to provide adequate
space behind the drive for servicing the cooling
circuit (recommended 18” minimum).

VYPER™VARIABLE SPEED DRIVE
INSTALLATION
100-200 IOM (FEB 09)
Page 17
Liquid Cooled Vyper P & I Diagram
Economized

VYPER™VARIABLE SPEED DRIVE
INSTALLATION
100-200 IOM (FEB 09)
Page 18
Liquid Cooled Vyper P & I Diagram
Noneconomized

VYPER™VARIABLE SPEED DRIVE
INSTALLATION
100-200 IOM (FEB 09)
Page 19
PACKAGE-MOUNTED VYPER™
The package-mounted version of the Frick Vyper™performs
identically to the remote-mounted versions.One advantage of
the package mounted version is that all electrical connections
have been prewired and tested at the factory which ensures
proper installation of control and power lines. In addition, the
package-mounted Vyper™does not require an additional
dV/dt filter between the FVS cabinet and the motor. Package
mounting is available for both 305 / 254 HP and 437 / 362 HP
versions. Both water or glycol connections are possible and
the optional IEEE 519 harmonic filter is also available. The
illustration below shows a 437 HPVyper™cabinet mounted on
a Frick RWF II 134 refrigeration package. Individual systems
configurations will vary according to model and horsepower
sizes selected.
The Vyper™cabinet is mounted on a rectangular welded
steel channel, which provides both an attachment point for
the cabinet’s side brackets, and also helps to maintain the
rigidity of the cabinet during service. The channel assembly
/ VSD cabinet is mounted on two extension brackets welded
to pads on the system’s oil separator. All package-mounted
units are assembled with vibration isolators located between
the Vyper™channel frame and the extension mounting brack-
ets. The isolators help to minimize the exposure of internal
components and connections to cyclic vibrations during
shipping and operation.
Power supply to the motor is made via a conduit exit from
a rear panel in the Vyper™Cabinet. Control wiring in/out is
located at the lower left side of the cabinet.
Drive Disconnect Height – covered under Exception 2,
section 8 of article 404 of the NEC, which states, Switches
and Circuit Breakers installed adjacent to motors, applianc-
es, or other equipment that they supply shall be permitted
to be located higher than 2.0 M (6 ft 7in) and to be acces-
sible by portable means.

VYPER™VARIABLE SPEED DRIVE
INSTALLATION
100-200 IOM (FEB 09)
Page 20
BLOWER MOTOR ROTATION
The Blower Motor rotation is marked on the blower assembly and is to be such that the blower draws into the assemly through
the screen and pushes down and through the motor.
Figure 9 - Blower Assembly
Figure 10 - Blower Motor Rotation