Nexen WEB CONTROL Liteguide AE50 Series User manual

(i)
Web Guide Amplifier
Liteguide AE50 Series
FORM NO. L-20165-E-0501
WEB CONTROL PRODUCTS
User Manual

(ii)
In accordance with Nexen’s established policy of constant product improvement, the specifications contained in this
manual are subject to change without notice. Technical data listed in this manual are based on the latest information
available at the time of printing and are also subject to change without notice.
Technical Support:
800-843-7445
[phone]
www.nexengroup.com
Nexen Group, Inc.
560 Oak Grove Parkway
Vadnais Heights, Minnesota 55127
ISO 9001 Certified
Copyright 2000 Nexen Group, Inc.
Read this manual carefully before installation and operation.
Follow Nexen's instructions and integrate this unit into your system with care.
This unit should be installed, operated and maintained by qualified personnel ONLY.
Improper installation can damage your system or cause injury or death.
Comply with all applicable codes.
WARNING

(iii)
TABLE OF CONTENTS
Introduction---------------------------------------------------------------------------------------------------------------------------------------- 1
Theory of Operation--------------------------------------------------------------------------------------------------------------------------- 1
Installation ---------------------------------------------------------------------------------------------------------------------------------------- 2
Electrical Connections------------------------------------------------------------------------------------------------------------------------ 2
Configuration ------------------------------------------------------------------------------------------------------------------------------------ 4
AE50 Tuning ------------------------------------------------------------------------------------------------------------------------------------- 5
Initial Test Run----------------------------------------------------------------------------------------------------------------------------------- 8
Operation ------------------------------------------------------------------------------------------------------------------------------------------ 9
Optional Controls---------------------------------------------------------------------------------------------------------------------------- 10
Maintenance ------------------------------------------------------------------------------------------------------------------------------------10
Troubleshooting--------------------------------------------------------------------------------------------------------------------------------11
Replacement Parts ---------------------------------------------------------------------------------------------------------------------------12
Parts List ----------------------------------------------------------------------------------------------------------------------------------------- 12
Test Pin Values -------------------------------------------------------------------------------------------------------------------------------- 12
Mounting Dimensions -----------------------------------------------------------------------------------------------------------------------13
Warranties ---------------------------------------------------------------------------------------------------------------------------------------14

1FORM NO. L-20165-E-0501
INTRODUCTION
Read this manual carefully, making full use of its explanations and instructions. The “Know How” of safe, continuous,
trouble-free operation depends on the degree of your understanding of the system and your willingness to keep all
components in proper operating condition. Pay particular attention to all NOTES, CAUTIONS, and WARNINGS to avoid
the risk of personal injury or property damage. It is important to understand that these NOTES, CAUTIONS, and
WARNINGS are not exhaustive. Nexen cannot possibly know or evaluate all conceivable methods in which service may
be performed, or the possible hazardous consequences of each method. Accordingly, anyone who uses a procedure
that is not recommended by Nexen must first satisfy themselves that neither their safety or the safety of the product will
be jeopardized by the service method selected.
THEORY OF OPERATION
Nexen’s Liteguide AE 50 Series Web Guide Amplifiers
are designed to provide Edge Position Control (EPC),
Center Position Control (CPC), and Line Follower Control
(LFC).
EPC is the most important form of web guiding. A sensor
is used to determine the position of the edge of a web
relative to a process. If the web is not in the correct
position, the AE 50 Amplifier issues a corrective signal to
an electrical linear actuator to move the web into correct
position. The linear actuator can move an unwind stand
to position the web entering a machine or move a guide
roll mechanism to steer the web within the machine. The
linear actuator can also be used to align the edge of a
wind up roll with a web as it leaves the machine, ensuring
a well wound roll.
CPC is used when the position of the web edge is not
important but the center of the web must be aligned with
the center of the machine. CPC is accomplished by
using two EPC type sensors, one on each side of the
web.
LFC is used when the edge position of a preprinted web
is not important but the position of the previously printed
material on the web is critical. In this situation, the sensor
is used to sense a printed guide line on the web or the
actual printed pattern.

2FORM NO. L-20165-E-0501
INSTALLATION
The AE50 can be shelf or floor mounted using mounting
feet located on the cabinet of the amplifier. For wall
mounting, remove the mounting feet from the bottom of
cabinet, remove rubber pads from the mounting feet, and
reinstall the mounting feet as wall mounting brackets in
rear holes on the sides of the cabinet. For panel
mounting, the brackets may be moved to the front holes
on the sides of the cabinet. Refer to dimensional drawing
in back of this manual for mounting dimensions and hole
locations.
The AE50 may be mounted at any angle.
NOTE: The AE50 is an electronic component and
should be mounted in a shock and vibration
free area which has an ambient temperature
of more than 32oF [0oC] and less than 122oF
[50oC].
ELECTRICAL CONNECTIONS
NOTE: All wiring may be brought into the AE50 cabinet through three 0.83 In. [21 mm] access holes in the left side of
the cabinet or three identical holes in bottom of the cabinet (See dimensional drawing on page 13 for hole
locations).
FIGURE 1
Electrical Connections

3FORM NO. L-20165-E-0501
1. SENSORS (Terminals 1 through 8)
All sensors are wired to Terminals 1through 8 (See
Figure 1). For CPC both PH16s or both AW150s
must be installed. MW 1000 is used when sensing
web edge position with a pneumatic sensor.
2. AUTO CENTERING SENSOR, Optional (Terminals
9, 10, 11, and 38)
The Auto Centering Sensor is used to realign the
guide roll mechanism or roll stand being controlled
to its mechanical center position. This sensor is not
required in all installations. If auto centering is used,
mount the sensor according to instructions provided
with the sensor and make electrical connections as
shown (See Figure 1).
3. CONTROL OUTPUT, Optional
(Terminals 14 and 16)
A ± 12 VDC, mA corrective signal is available at
Terminals 14 and 16. This signal is not isolated. It
must be interfaced through isolated input Terminals.
This Control Output is unaffected by the Output
Selector Jumper (See CONFIGURATION, Output
Select Jumper).
4. SELECTOR CONTROL, LA 20, Optional
If the Selector Control LA 20 is used, connect it to
Terminals 12, 17, 18, 19, 20, 21, 22, 26, and 39, as
shown in Figure 1, using cable provided with the
unit. This cable may be extended up to 50 Ft. [15m]
using 18 AWG [0.9 mm] cable.
5. POSITION TRANSMITTER, Optional (Terminals
23, 24, 25, and 38)
In most cases, the web guide system is operated in
integral mode and does not require a Position
Transmitter. Integral mode is more accurate than
proportional mode and is therefore preferred.
In rare cases, where good control is impossible due
to slip between the web and the steering rolls, bad
sensor positioning, low tension, or very low web
speeds, it may be necessary to add a Position
Transmitter and operate in proportional mode.
A 2K ohm Pot may be used as a Position
Transmitter.
CAUTION
Make sure P/I Selector Switch is set to
P (See CONFIGURATION, P/I Filter
Switch).
6. REMOTE FINE ADJUSTER, Optional (Terminals 27,
28, 29, and 38)
A customer supplied Remote Fine Adjustment
potentiometer, rated at 2K ohms, may be installed
(See Figure 1). Install the Remote Fine Adjuster
close to the web path to allow the operator a fine
adjustment capability without having to physically
reposition the sensor.
7. LINEAR ACTUATOR (Terminals 30 through 34
and 39)
Linear Actuator electrical connections are the same
whether the actuator is a separate unit used for
moving a roll actuator or a component of a guide roll
mechanism.
CAUTION
Observe wiring polarity at Terminals 30
and 31. When used with an actuator
without Limit Switch Leads, short Ter-
minals 32, 33, and 34.
8. ALARM CIRCUIT, Optional (Terminals 35, 36,
and 37)
An over travel alarm circuit is provided. When the
actuator has reached its full travel in either direction,
the Alarm Circuit is actuated. This over travel signal
can be picked up as a normally open signal at
Terminals 35 and 36. This signal can also be picked
up as a normally closed contact at Terminals 35 and
37. The contact ratings are: 0.5 A @ 250 VAC, 1 A
@ 24 VDC.
9. AC POWER (Terminals L, N, and G)
Choose from 100, 110, 120, 200, 220, or 240 VAC.

4FORM NO. L-20165-E-0501
Set the Sensor Voltage Switch and Sensor Voltage
Trim Potentiometer to the correct positions for the t
ype of sensor(s) used (See Table 2).
TABLE 2
a. Connect a digital voltmeter across Terminals
1 and 2 to check voltage.
b. The AWL280 voltage selection is controlled
through the AS10 Amplifier.
5. Output Select Jumper (See Figure 3 and Table 3)
NOTE: The Output Select Jumper (See Figure 3) is
set to K11 for Nexen web guide applications
and has no effect on the ± 12VDC output at
Terminals 14 and 16.
TABLE 3
CONFIGURATION
1. Sensor Compensator (See Figure 2)
The AE50 is available in three configurations.
Determine if the AE50 is the proper type of amplifier
for the sensor being used (See Table 1). The Sensor
Compensator is located on the Main Printed Circuit
Board (See Figure 2).
TABLE 1
2. P/I Filter Switch (See Figure 2)
Set the P/I Filter Switch to Pwhen operating in
proportional mode with Position Transmitter wired to
Terminals 23, 25, and 38 (See ELECTRICAL
CONNECTIONS, Position Transmitter). For all
other configurations, set the P/I Filter Switch to Ipo-
sition for integral mode.
3. Voltage Select Jumper (See Figure 3)
Make sure the Voltage Select Jumper is positioned
correctly for voltage being supplied to Terminals L, N,
and G.
4. Sensor Voltage Switch and Sensor Voltage Trim
Potentiometer (See Figure 3)
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P/I
Switch
Sensor
Compensator
Filter
Switch
Check Pins
Tuning
Panel
FIGURE 2
Main Printed Circuit Board
Main Printed
Circuit Board

5FORM NO. L-20165-E-0501
F101
AC Line
Fuse
Wiring
Terminals
F102
Output
Line
Fuse
Test Pins
Sensor
Voltage Trim
Pot
Sensor
Voltage
Switch
Voltage
Select
Jumper
Output Select
Jumper
FIGURE 3
Power Supply Board
Manual
Push
Buttons
Balance
Knob
End
Light
Error
Indicator Automatic
Switch
Mode
Switch
Power
Switch
Power
Light
FIGURE 4
Gain
Switch
AE50 TUNING
NOTE: The Tuning Panel, used to calibrate the sensors and output signals, is located on the side door of the AE 50.
The upper half of the Tuning Panel (GAIN Switch down to GUIDE POSition Selector Switch) is a preamplifier
used as a signal conditioner on all sensor types except the LH8B and PH20 (See Figure 5).
This preamplifier must be calibrated during initial system tuning. Initial system tuning should last until there is a
major change in the sensors, such as a sensor replacement or repositioning.
Gain
Knob
Auto
Light

6FORM NO. L-20165-E-0501
FIGURE 5
Fine
ADJ.
Span
GAIN
Switch
PH20
Remote
ON/OFF
1. Adjust the front panel controls (See Figure 4).
a. Set Gain Switch to LOW.
b. Set Automatic Switch to NORmal.
c. Set Mode Switch to MANual.
d. Adjust Balance Knob to midrange
(pointing up).
e. Adjust Gain Knob to midrange (pointing up).
f. Set Power Switch to ON.
2. Allow the system to warm up and temperature to
stabilize for ten minutes.
3. Recheck that all adjustments have been made
correctly for initial set up of the AE 50 (See
CONFIGURATION).
4. Preset Preamplifier Controls (See Figure 5).
a. Set the Gain Switch to HI position for all
sensors.
b. Adjust both the left and right BALance and
Gain Pots to midrange (use the adjustment
screwdriver provided with the AE 50).
NOTE: Adjustment Pots should be
approximately horizontal.
c. Set the Guide Position Selector Switch to
LEFT.
5. Left channel only preamplifier calibration (for right
channel only preamplifier calibration, follow the same
procedure but use right controls).
Preamplifier
Controls
PRO BIAS
and
PRO GAIN
GUIDE POSition
Selector Switch
MANual
NORmal
REVerse
PREAMPLIFIER TUNING (PH16, PH21, and UH20)
a. Using a sample of web material, completely
shield the sensor lamp source from the
receiving element and then completely
remove the sample from the gap.
b. As the sample is alternately inserted and
removed from the sensing gap, observe the
Error Indicator LED array on the front panel
(See Figure 4). Adjust the LEFT BALance
Pot until an equal number of red error LEDs
glow to the left and right of the center green
LED (See Figure 5).
c. Adjust the LEFT GAIN Pot until four red
LEDs glow on each side of the green LED as
the sample is inserted and removed.
d. With some materials, it may be necessary to
use the LO position.
6. Calibration using the PH16B for CPC.
NOTE: When using the PH16B for Center
Position Control (CPC), a second PH16B
must be used.
a. Switch GUIDE POSition Selector
Switch to RIGHT to tune preamplifier for
the second PH16B.
b. Follow the procedure described in AE
50 TUNING, Preamplifier Tuning, Step
5, utilizing RIGHT BALance and GAIN
Pots.
7. If using one sensor for Edge Position Control EPC,
leave the GUIDE POSition Selector Switch set to
LEFT. When using two PH16Bs for CPC, set the
switch to CPC position after both left and right
sensors have been calibrated.

7FORM NO. L-20165-E-0501
TUNING PANEL ADJUSTMENT (Lower Half)
1. The PH20 Switch defines whether the PH20 is
following a clear or opaque web edge.
When using sensors other than PH20, set Switch
to .
2. The MANual, NORmal, REVerse Switch is used to
invert the operation of Manual Push Buttons on the
front panel; set these switches to NOR position.
If the Manual Push Buttons are working backwards,
set the switch to REV.
3. The Fine ADJust and SPAN Switch is used to
control the adjustment range of a remote fine
adjustment Pot, if the machine is so equipped. Start
with midrange position (adjustment slot horizontal).
4. The Remote ON/OFF Switch controls operation of a
remote operators station, if the machine is so
equipped.
When this switch is set to the ON position, the
remote operators station is active and controls the
mode selection and manual operation of the AE 50.
At this time, the Mode Switch and Manual Push
Buttons located on the front panel are inactive and
cannot be used.
When set to the OFF position, control returns to the
Mode Switch and Manual Push Buttons located on
the front panel and the remote operators station is
inactive.
NOTE: When using the LA20 remote operators
control, the remote ON and OFF Switch
must be left in the OFF position at all times.
The ON/OFF function is controlled by the
switch located on the LA20.
5. The PRO-BIAS and PRO-GAIN Pots are effective
only when a position transmitter is included in the
system and the P/I Selector Switch is set to P.
When the P/I Selector Switch is set to I, the PRO-
BIAS and PRO-GAIN Pots have no effect.
The PRO-BIAS Pot is used to control the balance or
neutral position of the actuator when using the
controller in proportional mode. Set this pot to its
midpoint and increase or decrease as required.
The PRO-GAIN Pot is used to control system gain or
reaction speed when the controller is operated in
proportional mode (rotate clockwise to increase
reaction speed).
TUNING PH20 SENSOR
1. Install the PH20 Sensor according to Maintenance
Instructions (L-20141) provided with the PH20
Sensor.
2. With power ON, move sensor on its mounting
bracket until the light beam is centered on the edge
of a transparent web (See Figure 6).
3. Set PH20 Switch on Tuning Panel to .
4. Adjust the BALance Knob on the front panel until the
green LED in the center of the Error Indicator is lit.
5. To sense an opaque web with the PH20, set the
PH20 Switch on the Tuning Panel to the position
and repeat Step 4.
Lens
Web
FIGURE 6
Reflector

8FORM NO. L-20165-E-0501
TUNING LH8B SENSOR
1. Install the LH8B Sensor according to Maintenance
Instructions (L-20142) provided with the LH8B
Sensor.
NOTE: Make sure that the LH8B Sensor is adjusted
to the proper distance from the web surface
(SeeL-20142).
2. Select either Line Follower Mode or Edge Follower
Mode using the switch located on top of the LH8B.
Align the white dot on switch with the correct symbol
on the LH8B housing (See Figure 7).
3. For Line Follower Mode, move the LH8B on its
Mounting Bracket until the light spot from the LH8B
straddles the line to be followed. Refer to
Maintenance Instructions L-20142 provided with the
LH8B for maximum and minimum line widths that can
be followed. If the line is too wide it will be necessary
to use the LH8B as an Edge Follower and follow one
side of the line.
4. For Edge Follower Mode, move the LH8B on its
Mounting Bracket until the light spot is centered on
the edge to be followed.
5. After the light spot from LH8B has been positioned
according to Steps 3 or 4 above, adjust the BALance
Knob (located on the AE 50 front panel) until the
green LED at the center of the error indicator is lit.
FIGURE 7
INITIAL TEST RUN
1. Make sure sensor(s) are mounted securely. Sensor
movement will prevent proper positioning and may
cause hunting.
2. Check electrical connections (See ELECTRICAL
CONNECTIONS).
3. Recheck AE 50 set up (See CONFIGURATION).
4. Make sure system has been properly tuned (See
AE50 TUNING).
5. Set the Power Switch (located on the AE50 front
panel, See Figure 4) to ON. The Power Light should
glow.
6. Allow system to warm up for approximately 10
minutes.
7. Start machine.
8. Set Mode Switch (located on AE 50 front panel) to
AUTO.
9. Move sensor or web right or left.
10. Observe action of web guide as it attempts to correct
error caused by Step 9. If guide mechanism is
correcting backwards, move Automatic Switch from
NORmal to REVerse.
11. With the machine running at normal speed, adjust the
Gain Knob (located on AE 50 front panel, See
Figure 4) to achieve maximum response speed
(clockwise to increase response speed). If the web
guide system begins to hunt, decrease gain until web
stabilizes. If gain cannot be adjusted fast enough,
set the Gain Switch (located on AE 50 front panel
See Figure 4) to HIGH.

9FORM NO. L-20165-E-0501
OPERATION
1. The Gain Switch determines adjustment range of
the Gain Knob and is normally set to LOW position.
If the Gain Knob has been adjusted full clockwise
and response is still too slow, adjust Gain Switch to
HIGH.
2. The Gain Knob controls the speed with which the
web guide system reacts to changes in web
position. Adjust to achieve maximum response
speed without causing hunting or overcorrecting.
NOTE: If a web wanders so much that it is
impossible to correct fast enough without
causing hunting, the roll must run at a
reduced line speed. This can be a
particular problem when using an LH8B as
a line follower. If the line moves completely
out of the light spot, the controller has no
way of knowing which direction to correct.
3. The Mode Switch determines the control mode of
the AE50. When set to AUTO Mode, the
controller will automatically control the web to keep
the edge centered in the sensor. When placed in
MANual position, the controller will move the web
as dictated by the two Manual Push Buttons
regardless of web position in the sensor.
CENTERING Mode causes the controller to move
the web guiding mechanism to its midtravel or
center position as determined by the Auto
Centering Sensor, if so equipped.
4. The Manual Push Buttons control the movement
of the linear actuator when the controller is in
MANual Mode. These momentary contact buttons
will continue to move the linear actuator in the
desired direction until the button is released or the
linear actuator reaches the limit of its travel. When
a button is released, the linear actuator will stay in
its current position until a button is pushed or the
controller is switched to another mode.
5. The Power Switch controls supply of AC power
to the system. When the switch is pressed to the
ON position, the Power Light will light to show that
the system is active.
6. The End Light indicates when the linear actuator
has reached its travel limit in either direction.
7. The Auto Light glows when the Mode Switch is in
Automatic Mode.
8. The Error Indicator is an eleven segment LED array
(one green LED in the center with five red LEDs on
the right and left) showing web deviation from the
center of the sensor. When the web is perfectly
centered, the green LED glows. As the web moves
off center, an increasing numbers of red LEDs glow
in the direction that the web is off center.
NOTE: Due to the many possible sensor types
usable with the AE50, it is not possible to
quantify the value of each LED. The
amount of deviation necessary to move the
Error Indicator one segment left or right will
vary with the sensor type used.
Manual
Push
Buttons
Balance
Knob
End
Light
Error
Indicator Automatic
Switch
Mode
Switch
Power
Switch
Power
Light
FIGURE 8
Gain
Switch
Gain
Knob
Auto
Light

10FORM NO. L-20165-E-0501
1. A Position Lock Switch may be installed to allow
lock up of the linear actuator at any point in its travel
during automatic operation. This can be very useful
on an unwind roll stand control system when there
are one or two “rough spots” in a roll. In order to get
perfect web guiding through the rough area, the
machine speed has to be reduced to allow the web
guide to correct fast enough. The Position Lock
Switch can be used to “lock up” the system during
the rough section, which will prevent the system from
erratic operation without having to reduce line speed.
The Position Lock Switch can be released and the
system will return to normal automatic web guiding.
2. A Remote Operators Control can also be used with
the AE50. When the Remote Switch located on the
Tuning Panel is set to its ON position, the Remote
Operators Control provides the Mode Switch
function and Manual Push Button functions. The
equivalent controls on the AE50 front panel are then
disabled. When the Remote Switch is set to the
OFF position, the mode and manual functions return t
to the AE50 front panel and the Remote Operators
Control is disabled.
The Remote Operators Control can be useful when
adjusting the sensor position at the start of a new run
of product.
3. An Alarm Relay is also provided which can be wired
either normally open or normally closed. This relay
activates when the linear actuator reaches its full
travel position in either direction.
The Alarm Relay can also be used to activate a visual
or audible alarm to inform the operator that the web
guide has reached maximum travel without being
able to achieve full correction.
4. A Remote Fine Adjustment Pot can also be used
with the AE50 to allow fine adjustment of the web
position without having to move the fine adjustment
screw on the sensor mounting bracket.
MAINTENANCE
There is no required maintenance for the AE50 or the
linear actuator.
The light transmitting and receiving elements of the
sensors should be wiped clean daily or as required using
a clean, dry, soft cloth.
OPTIONAL CONTROLS
Several optional controls may be added if a specific operation requires them. These operational controls and their
functions are defined below.
CAUTION
Care must be taken to prevent scratch-
ing of lenses when cleaning.
To replace sensor lamps or receiving elements, consult
the Maintenance Instructions L-20141 provided with the
sensor.

11 FORM NO. L-20165-E-0501
TROUBLESHOOTING
SYSTEM WILL NOT OPERATE CORRECTLY IN AUTOMATIC MODE
1. Make sure Remote Switch is ON when attempting
to control with Remote Operators Control and OFF
when trying to control with the front panel controls.
2. Check Fuse F102, located on Power Supply PC
Board. This is the fuse in the output line to the linear
actuator. If Fuse F102 blows again after
replacement, check the electrical connections
between AE50 and linear actuator.
3. Select Manual Mode on AE 50 front panel. Attempt
to move linear actuator with Manual Push Buttons.
If linear actuator does not move:
a. Make sure that there is no physical
obstruction or restriction to guide roll
movement.
LINEAR ACTUATOR MOVEMENT IS JERKY OR HUNTING
1. Increase Gain Knob (See Figure 4). If gain is set to
maximum and movement is still too slow, adjust the
Gain Switch to HIGH and readjust the Gain Knob.
Do not adjust gain so high as to produce hunting or
overcorrection.
2. Check position of the sensor relative to the roll stand
or guide roll mechanism being controlled. The
sensor must come immediately after the controlled
element. Any web transport rollers between them will
cause sluggish response.
1. Decrease Gain Knob (See Figure 4) setting. If Gain
Knob is already set to minimum, set the Gain Switch
from HIGH to LOW and readjust Gain Knob.
2. Check mounting of sensor, sensor mounting bracket,
and sensor mounting bar. If any of these items are
not firmly mounted, the sensor position will vary,
preventing smooth web guiding.
LINE ACTUATOR MOVEMENT IS SLUGGISH AND SYSTEM CANNOT MAINTAIN WEB POSITION
b. Check linear actuator limit switches. Both
limit switches should be open, unless linear
actuator is at its travel limit.
4. Check LH8B and PH20 lamp. If lamp is not lit and
there is power at Terminals 1 and 2, check sensor
electrical connections or replace bulb.
5. For other sensors, move web back and forth through
sensor light beam or pressure zone, and determine if
the Error Indicator lights up symmetrically left and
right as the web moves, if not, recalibrate system for
specific Sensor involved (See AE50 TUNING).
NOTE: If web edge on unwind roll is badly
misaligned, it may be impossible to correct it
without setting Gain so high as to produce
hunting. In this case, the machine speed
must be reduced to permit proper web
guiding.
3. Check mounting of linear actuator and mechanical
components of guide roll mechanism or movable roll
stand for mechanical play. Any mechanical play will
provide lost motion which will create a jerky
movement or hunting.

12FORM NO. L-20165-E-0501
POWER BOARD
TP102 COM DC Power Supply
TP101 DC + 15V ± .6V
TP102 DC - 15V ± .6V
TP104 See Table 2 Lamp Power
Page 4 Supply
TP105 See Table 3 Power Supply
Page 4 Board Output
MAIN BOARD
TP202 COM DC Power Supply
TP201 DC + 15V ± .6V
TP203 DC - 15V ± .6V
TP204 DC - 5V ± .25 Cd bias Power Supply
TP205 LEFT (L) Detection Automatic Signal
Signal Max. DC ± 15V
TP206 RIGHT (R) Detection
Signal
TP207 TP205 + Balance/
Gain
TP208 TP206 + Balance/
Gain
TP209 TP207 + TP208
TP210 TP209 + Balance/
Gain
TP211 Low Pass Filter
Output
TP212 DC + 15 -0- -15V Centering Signal
TP213 Max. DC ± 15V Booster Input
TP214 DC ± 5V Automatic Bias
TP215 Position Transmitter
Output
TP216 Fine Adjustment
Output
DESCRIPTION P/N
Main P.C. Board (AE 50-1) 3033
Main P.C. Board (AE 50-2) 3034
Main P.C. Board (AE 50-4) 3035
Power Supply P.C. Board (All) 3032
Output Board (All) 3031
Balance Pot 2788
Gain Pot 2789
DESCRIPTION P/N
Sensor Compensator (White) 2785
Sensor Compensator (Black) 2786
Sensor Compensator (Green) 2787
Gain Switch 2790
NOR/REV Switch 2791
Manual Push Button 2792
Power Switch 2793
REPLACEMENT PARTS
When ordering replacement parts, specify model
designation, item number, and quantity. Purchase
replacement parts through your local Authorized Nexen
Web Handling Distributor.
PARTS LIST
TEST PIN VALUES

13 FORM NO. L-20165-E-0501
MOUNTING DIMENSIONS
FIGURE 9
Mounting Dimensions

14FORM NO. L-20165-E-0501
WARRANTIES
Warranties
Nexen warrants that the Products will be free from any defects in material or workmanship for a period of 12 months
from the date of shipment. NEXEN MAKES NO OTHER WARRANTY, EXPRESS OR IMPLIED, AND ALL IMPLIED
WARRANTIES, INCLUDINGWITHOUT LIMITATION, IMPLIED WARRANTIES OF MERCHANTABILITY AND
FITNESS FOR A PARTICULAR PURPOSE ARE HEREBY DISCLAIMED. This warranty applies only if (a) the Product
has been installed, used and maintained in accordance with any applicable Nexen installation or maintenance manual
for the Product; (b) the alleged defect is not attributable to normal wear and tear; (c) the Product has not been altered,
misused or used for purposes other than those for which it was intended; and (d) Buyer has given written notice of the
alleged defect to Nexen, and delivered the allegedly defective Product to Nexen, within one year of the date of
shipment.
Exclusive Remedy
The exclusive remedy of the Buyer for any breach of the warranties set out above will be, at the sole discretion of Nexen,
a repair or replacement with new, serviceably used or reconditioned Product, or issuance of credit in the amount of the
purchase price paid to Nexen by the Buyer for the Products.
Limitation of Nexen’s Liability
TO THE EXTENT PERMITTED BY LAW NEXEN SHALL HAVE NO LIABILITY TO BUYER OR ANY OTHER PERSON
FOR INCIDENTAL DAMAGES, SPECIAL DAMAGES, CONSEQUENTIAL DAMAGES OR OTHER DAMAGES OF
ANY KIND OR NATURE WHATSOEVER, WHETHER ARISING OUT OF BREACH OF WARRANTY OR OTHER
BREACH OF CONTRACT, NEGLIGENCE OR OTHER TORT, OR OTHERWISE, EVEN IF NEXEN SHALL HAVE
BEENADVISEDOFTHEPOSSIBILITY OR LIKELIHOOD OF SUCH POTENTIAL LOSS OR DAMAGE. For all of
the purposes hereof, the term “consequential damages” shall include lost profits, penalties, delay images, liquidated
damages or other damages and liabilities which Buyer shall be obligated to pay or which Buyer may incur based upon,
related to or arising out of its contracts with its customers or other third parties. In no event shall Nexen be liable for
any amount of damages in excess of amounts paid by Buyer for Products or services as to which a breach of contract
has been determined to exist. The parties expressly agree that the price for the Products and the services was
determined in consideration of the limitation on damages set forth herein and such limitation has been specifically
bargained for and constitutes an agreed allocation of risk which shall survive the determination of any court of
competent jurisdiction that any remedy herein fails of its essential purpose.
Limitation of Damages
In no event shall Nexen be liable for any consequential, indirect, incidental, or special damages of any nature whatso-
ever, including without limitation, lost profits arising from the sale or use of the Products.
Warranty Claim Procedures
To make a claim under this warranty, the claimant must give written notice of the alleged defect to whom the Product
was purchased from and deliver the Product to same within one year of the date on which the alleged defect first
became apparent.
Nexen Group, Inc.
560 Oak Grove Parkway
Vadnais Heights, MN 55127
800.843.7445
Fax: [phone]
www.nexengroup.com
ISO 9001 Certified