EMC Test Systems, L.P. reserves the right to make changes to any products herein to improve functioning,
design, or for any other reason. Nothing contained herein shall constitute EMC Test Systems, L.P.
assuming any liability whatsoever arising out of the application or use of any produ ct or circuit described
herein. EMC Test Systems, L.P. does not convey any license under its patent rights or the rights of others.
BELT TENSION........................................................................................................................................... 26
HAND CONTROL UNIT .......................................................................................................................... 27
NOTI CE: This product and relate d documentation must be r eviewed fo r familiarization
with safety markings and instructions before operation.
SAFETY SYMBOL DEFINITIONS
!
OR
CAUTION
WARNING
REFER TO MANUAL
instruction manual for additional information.
HIGH VOLTAGE
could result in severe personal i n jury or dea th.
PROTECTIVE EARTH GROUND (SAFETY GROUND)
Indicates protective earth terminal. You should provide uninterruptible safety
ea rth ground from the main power s ource to the pro duct input wiring
termi n a l s , power cord, or su pplied power cord set.
CAUTION
minor pe r sonal inju r y and/or property damage. Included text gives proper
procedures.
WARNING
SEVERE personal in j u r y and/or property damage. Included t e xt gives proper
procedures.
GENERAL SAFETY CONSIDERATIONS
BEFORE POWER IS APPLIED TO THIS INSTRUMENT,
GROUND IT PROPERLY
cable to a power source provided with protective earth contact. Any
inte rruption of the protecti ve (grounding) con duc tor, inside or outsi de the
ins tr um ent, or discon nection of the protective earth te r minal could result in
pers onal injury.
When product is marked with this symbol refer to
Indicates pre s ence of hazardous voltage. U nsafe practice
Denotes a hazard. Failure to follow instructions could result in
Denotes a hazard. Fa ilure to follow instructions could result in
throu gh th e prot ective conduc tor of the AC power
(or modifying) the unit by yourself may void your warranty. If you attempt to
se rvice the u ni t by yo ur s elf, disco nn e c t all elect ri cal power bef ore starti ng.
There are voltages at many points in the instrument which could, if
contacted, cause personal injury. Only trained service personnel should
perf orm adjustments and/or service procedures upon this instru ment.
Capacitors inside this instrument may still be CHARGE D even when
instrument is disconnected from its power source.
ONLY QUALIFIED PERSONNEL
STAY CLEAR
of moving components during operation of equipmen t.
should operate (or service) this equipment.
servicing
MODEL 2065 LOPRO TURNTABLE Introduction
Archived 3/18/10
INTRODUCTION
The Model 2065 is an electric-powered turntable platform system
designed to be used with the Model 2090 Positioning Controller
for EMI compliance testing. The Model 2065 Turntable is a lowprofile design which is constructed of PVC plate with a textured
ABS top and other non-metallic components. The 1.2 meter
diameter turntable is provided as an easily assembled system
which can be disassembled for service or to be moved. The
mechanical assembly, motor drive unit, and shaft kit (optional),
comprise the three basic subassemblies of the turntable.
The mechanical assembly is shipped assembled with the top, base,
gear box, support bearings and drive belt included. The bearings on
which the table rotates are integral to the top and bottom of the
turntable. Three independent bearing races provide support for the
inner and outer portions of the turntable top. These bearings are of
a completely non-metallic construction. There are four keepers
located on the outside of the turntable top. These keepers prohibit
the bearings from shifting out of position during shipment. When
the user has the table set in place and is ready to begin testing,
these should be removed.
The motor drive, encoder and limit switch assemblies are located
in a shielded enclosure with state of the art I/O provided via a fiber
optic interface. The motor drive is coupled to the drive shaft with a
flexible hose coupling. The other end of the shaft connects to the
turntable gear box with a keyed coupling that clamps between the
two shafts. The shaft assembly transmits torque from the motor
drive to the gear box at the table. The drive belt, which runs around
the underside of the turntable at its perimeter, is driven by a pulley
in the gear box.
To limit over-travel of the turntable in either direction of
movement, fixed mechanical limits are installed in the motor base
enclosure. The primary means of limiting the turntable’s rotation
are the soft (electrical) limits which are set on the front panel of the
Model 2090 Positioning Controller. These soft limits should be set
within the mechanical limits. The mechanical limits are secondary
and a safety stop to limit the turntable’s total rotation.
Overshoot of the turntable’s rotation is limited by an electric brake
which is directly attached to the drive motor. The Model 2090
Positioning Controller compensates for any remaining overshoot
by applying an overshoot compensation routine which is
accomplished automatically without any user input.
Model 2090 Positioning Controller: This controller provides
control for two separate devices (towers and turntables) in any
combination, plus the control of four auxiliary devices via a fiber
optic interface. The unit includes a GPIB connection and is
compatible with most popular EMI measurement software.
Hand Control Unit: This sturdy, hand-held controller will allow
the user to manually operate the table remotely and independently
from the Model 2090 Positioning Controller. This controller
attaches conveniently to the Motor Base Unit of the Model 2065
Low Profile Turntable. Functions include: Clockwise (CW),
Counterclockwise (CCW) and Hand/Main Control selection.
Shield Room Feed-through: This option allows the customer to
take the fiber optic control cable from the control room to the
shield room while maintaining shielding attenuation. The unit is
made of brass for conductivity and provides attenuation of greater
than 100 dB at 10 GHz. A single 22.25 mm (.875 inch) hole is
required to mount this option.
Additional Fiber Optic Cable: Various lengths of fiber optic
cable are available by custom order. The standard length provided
is 10 m (32.8 ft).
Shaft Kit (Optional): This option allows the user to position the
electric drive motor farther away from the turntable. The
extension shaft separates the turntable and the drive motor by as
much as 5 m (16.4ft). Following the detailed instructions in this
manual, it may be cut to a custom length. This option must be
specified at the time the order is placed.
Read this manual completely before starting installation. This
equipment should be installed and operated only by qualified
personnel.
Ensure correct voltage setting is selected on the Motor Base Unit.
Do not attempt to service unless qualified to do so. As with any
electrical equipment, ensure that electrical power to the unit has
been disconnected and secured when performing scheduled
maintenance or adjustments.
WARRANTY
Do not make any modifications to this unit without consulting the
factory directly.
Stay clear of all moving components on this equipment.
Do not operate this equipment with the protective covers removed.
Do not, at any time, place hands or feet in the vicinity of the drive
gears on the turntable.
Do not operate the turntable while someone is physically on the
turntable top.
Regularly inspect the equipment for loose fasteners and wear.
Conduct appropriate scheduled maintenance in accordance with
factory recommendations.
Only use replacement parts and fasteners ordered directly from the
factory.
The fiber optic cable must
on the front panel of the motor base. Failure to do so will increase
the chance of the cable being accidentally pulled, thus breaking the
fiber optic connectors.
The keepers on the outside edge of the turntable should be in place
when the turntable is to be moved or relocated. This will prevent
damage to the bearings on which the turntable top rotates.
The Model 2065 turntable is shipped partially assembled. It is
anticipated that assembly will take no longer than 1 hour. Ensure
that a clear area is available to unpack, assemble and install the
turntable. Prior to starting assembly, open the shipping container
and check all parts for any shipping damage. NOTE: Do not
discard any packing material until the turntable is fully installed
and operational.
WHAT IS INCLUDED IN SHIPMENT
Attention: Completely check all packing material for parts before
discarding.
Level
Adjustable Wrench
Phillips and flat head screwdrivers
Shims – if the floor surface is not level
MODEL 2065 LOPRO TURNTABLE Electrical Installation
Archived 3/18/10
ELECTRICAL INSTALLATION
CAUTION It is important that this electrical installation
procedure be performed by a qualified electrician, in accordance
with local and national electrical standards prior to energizing the
unit.
CAUTION Ensure power is OFF and secured before proceeding
further. The voltage select switch on the Motor Base Unit must be
set to the proper mains voltage before power is applied to the unit.
The Motor Base Unit of the Model 2065 Low Profile Turntable
allows for the selection of either 115 or 230 VAC mains input
voltage. This selection should be made during installation and prior
to connecting the Motor Base Unit to the power mains.
On the front of the enclosure for the Motor Base Unit, locate the
voltage select switch which is marked for 115 and 230. Switch to
the appropriate position which corresponds to the mains voltage to
be applied. This switch provides a means of selecting the voltage
to be applied to the drive motor, electric brake and internal power
supply.
Determine the mains voltage to be applied to the Motor Base Unit.
The branch circuit supplying power to the motor base should be
protected from excess current according to local electrical codes.
Check that the conductor size is adequate for the motor load with
respect to the distance from the mains source. Improperly sized
conductors will lead to a high voltage drop in the power
conductors and cause reduced starting torque. This condition could
lead to premature motor failure.
CAUTION Keep all body parts away from the drive gears and
drive belt when the turntable is energized. Do not operate the
turntable with the protective guards removed.
Electrical Installation MODEL 2065 LOPRO TURNTABLE
Archived 3/18/10
CONNECTING THE MODEL 2090 POSITIONING
CONTROLLER
Any combination of primary devices (towers, turntables,
reverberation paddles, MAPS, etc.) can be connected to the two
Device Interface ports located on the rear panel of the Model 2090
controller. For easy set up of an EMC facility, it is recommended
that the turntable be connected to the Device 2 interface port. The
controllers default settings are for a tower connected to the Device
1 interface port and a turntable connected to the Device 2 port.
Primary device connection is accomplished by way of a dual fiber
cable included with the device. This cable terminates into two ST
connectors that are identical at both ends. The cable is
symmetrical; either end can be connected to the controller. A fiber
optic cable that is connect to the IN port of a device should, at the
other end, be connected to the primary OUT port of the motorbase.
A fiber connected to the OUT port of the device should, at the
other end, be connected to the primary IN port of the motorbase.
Older motor base designs have only one fiber optic connector pair,
while the newest motor base interface provides a secondary
interface reserved for future expansion.
NOTE: Fiber optic cabling for each device should not be allowed
to hang unsupported from the rear panel of the controller. The
fibers and connectors are easily broken if twisted or bent. Keep the
fiber optic cables as straight as possible from the connector to the
protective sheath.
Using the Model 2090 Position Controller (or hand controller),
rotate the motor base shaft to verify proper operation. Run the
motorbase down to the lower limit CCW and then back it off from
the lower limit just a bit. This step will help after the turntable is
attached to the motorbase and it is time to set the rotation limits for
the turntable. Disconnect the power for the Model 2090 and the
motor base before proceeding with the assembly of the turntable.
Disconnect the fiber optic cables from the units so they will not be
damaged during installation.
CAUTION Ensure power is OFF and secured before proceeding
further.
1) Position the turntable mechanical assembly on the floor. The
turntable mechanical assembly has a 44 inch (112 cm) wide
base plate that needs to rest on a flat surface. To insure proper
alignment of the drive shaft, the bottom surface of all three sub
assemblies: the TT mechanical assembly, the drive shaft
assembly and the motor drive will need to be installed at the
same level with each other. It may be necessary to place shims
under the base if the floor is not flat. The table base plate has
four holes for fastening the unit to the floor using 5/16"
diameter screws but will stay in place due to its own weight.
2) After the turntable is in position, remove the plastic gear box
cover plate by loosening the 4 plastic bolts used to hold it in
place.
If the optional shaft kit was purchased please continue to the
Optional Shaft Kit Installation Instructions and disregard the
remainder of the instructions in this section.
3) Install the aluminum shaft adapter to the black shaft out of the
turntable gearbox. A ¼” phenolic (brown plastic) pin is used
to key it to the black shaft. A spacer piece fits inside the shaft
adapter, between the adapter and the pin to help secure the pin
in place. Two setscrews (size 8-32) lock the adapter in place on
the shaft.
4) The gray hose coupling with two hose clamps around it is now
slipped on to the shaft adapter.
5) The motor drive is held to the turntable base by an aluminum
bracket. The bracket attaches to the ¾” base plate of the
turntable using two ½-13 x ¾” bolts. There are two standoffs
that attach the bracket to the motor base at the correct distance.
6) Position the motor drive so that its shaft slips into the hose
coupling. The bracket installed in step 5 should now be in
place. Secure the bracket to the motorbase using the ¼ x 1-1/4”
hex head cap screws provided. Both hose clamps should be
tightened to secure the gray hose coupling around the shafts.
7) The gearbox cover can now be placed on the gearbox and the 4
bolts that hold it in place inserted and tightened.