dunkermotoren AMETEK ServoTube 11 Module User manual

User guide
Dunkermotoren GmbH | Allmendstraße 11 | D-79848 Bonndorf/ Schwarzwald
Phone [phone] | Fax [phone]/ 212 | [email protected]
Version 08/2017
Operating Manual ServoTube 11 Module
Publication Ref: UM03017/B
Betriebanaleitung ServoTube 11 Module
Publikation Ref: UM03017/B
ServoTube 11 Module

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WARRANTY
Dunkermotoren guarantees its equipment against faulty components for a period of twelve months from delivery.
Replacement components will be free of charge. Dunkermotoren shall not in any event be liable for consequential
damage or loss.
Dunkermotoren operates a customer care facility and all requests for repair and replacement should be directed to
the Customer Care Department. The serial number of the equipment should be quoted in any communications. The
right to change specication and price is reserved by Dunkermotoren.
DISCLAIMER
Dunkermotoren makes no guarantees of any kind with regard to this User Guide. Dunkermotoren shall not be liable
for errors contained herein or for consequential or incidental damages incurred as a result of acting on information
contained in the manual.
CUSTOMER CARE
For enquiries relating to the operation and use of the ServoTube 11 Module described in this User Guide, please
contact the Sales department, Telephone : [phone].

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ServoTube 11 Module
USER GUIDE
Contents
Preliminary pages
Title page ..................................................................................................................... 1
Copyright notice / disclaimer........................................................................................ 2
Contents list (this page) ............................................................................................... 3
Warnings ..................................................................................................................... 4
Reader’s notes............................................................................................................. 5
Chapters
1 Product overview ................................................................................................... 6
2 Installation.............................................................................................................. 7
3 Maintenance ........................................................................................................ 12
4 Service................................................................................................................. 20
Appendices
A Glossary of terms & Abbreviations....................................................................... 23
B Trouble Shooting.................................................................................................. 25
C Technical Specication ........................................................................................ 26

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WARNINGS
Warning symbols and meanings
In this User Manual warning symbols are used. These are intended to alert you to the potential hazards to personnel
which are associated with the equipment described, in all aspects of use, including handling, installation, operation
and maintenance.
Heart pacemakers. Personnel tted with pacemakers must not handle or work on this equipment.
Strong magnets. The thrust rod contains powerful magnets and will strongly attract ferrous objects.
Damage can occur to computer disks and credit cards.
Electric shock. Potentially lethal voltages may be present during the commissioning and servicing of
this equipment. Isolate and disconnect all sources of electrical supply before working on the equipment.
Particular care needs to be taken when working on or around forcer phase connections.
Crush hazard. The forcer may move unexpectedly. Always isolate all sources of electrical supply before
working on the equipment.
Heavy object. May need two people to lift.
General hazard. Follow the advice given.
Electrical safety
This equipment must be earthed.
EMC precautions
This equipment is intended for use in a light industrial environment. It is recommended that the following precautions
be observed during installation:
• Keep all cable lengths to a minimum.
• Provide as much physical separation as possible between power and sensor cables. In particular, avoid long,
parallel runs of cables.
• Maintain screen continuity throughout the cable run.
• Use 360 degree screen terminations where possible. “Pig-tail” terminations are not recommended.
• Ensure compliance with any local electrical and EMC regulations in force at the time of installation. This is the
responsibility of the User.

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READER’S NOTES
GENERAL
This manual describes the Installation, Maintenance and Spares of the ServoTube module.
ASSOCIATED PUBLICATIONS
The following publications are associated with the ServoTube 11 Module User Guide.
Title Reference Number
ServoTube 11 Module Data sheet DS01101/A
C-Accelnet Micro Panel User Guide -
C-Accelnet Micro Panel Data sheet -

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The ServoTube Module with fully integrated bearing
rail and position encoder o󰀨ers unprecedented value in
high performance applications. The ServoTube Module
is a cost e󰀨ective alternative to ballscrew and belt drive
systems where high speed and exibility are required.
1V pk-pk sin/cos signal. For applications requiring higher
levels of accuracy, the ServoTube Module is available
with a fully integrated optical position encoder giving a
resolution of up to 1 micron.
The non-contact nature of the direct linear drive results
in life expectancy far above that for typical belt drive
and ballscrew systems, with the added advantage of no
deterioration in accuracy or repeatability over the entire
life of the product.
The ServoTube Module is an ideal OEM solution for
easy integration into pick-and-place gantry and general
purpose material handling machines. The load is
mounted directly to the forcer giving a very stable base.
Servotube Modules can be easily integrated with each
other or with other ServoTube products to create multi
axis systems with minimal design e󰀨ort.
The ServoTube has superior thermal e󰀩ciency, radiating
heat uniformly. High duty cycles are possible without the
need for forced-air or water cooling.
Servotube is complemented by a range of matched, self
tuning servo-ampliers and indexers complete with plug
and play cabling. Ampliers interface easily to PLCs and
feature CANopen network connectivity for distributed
control applications.
Chapter 1
Product Overview
Four models deliver a continuous force of 9~27N (2~6lb)
with peak forces of up to 92N (21lb). Standard stroke
lengths of 28~825 mm are available.
The magnetic design of ServoTube generates 12 micron
repeatability and 350 micron absolute accuracy, from
a non-contact, integral position sensor. The standard
ServoTube position encoder output is an industry standard

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Chapter 2
Installation
UNPACKING
• Check packaging for signs of damage.
• Remove packaging. Do not discard. In the event of items requiring return, it is recommended that the original
packaging be used.
• Metal surfaces may be hot or below 0oC following prolonged storage.
• Ensure that the delivery note correctly reects your order and the items delivered.
• Check equipment for signs of damage. Never use the equipment if it appears damaged in any way.
• Read the User Guide before installing and using this equipment.
INSTALLATION
Intended operating environment
This equipment is intended for use in an environment within the following conditions:
Operating temperature 0 to +40 °C
Storage temperature -25 °C to +70
°C
Altitude (above mean sea
level) 1000 m
Overvoltage category II
Pollution degree 2
EMC light industrial
Mechanical
Mounting module to user’s surface
All torque gures are non lubricated i.e. no thread lock.
For all modules, ensure that the mounting surface is as at as possible. The module can be mounted by two methods:
• Using the system clamp top xings. Both sides should be clamped with a distance between clamp centres of no
more than 100 mm. Each M4 bolt should be tightened to a torque of 4 Nm.
• Using the M4 T-nut slots on the underside of the module. This requires access from underneath the mounting
surface. Both sides should be xed with a distance between xing centres of no more than 100 mm. Each M4
bolt should be tightened to a torque of 4 Nm.
Mounting user’s payload to module moving forcer
The payload is mounted to the moving forcer top surface using the M3 clearance holes.

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Length Stroke
1104 1108 1112 1116
200 28 - - -
226 54 - - -
251 79 28 - -
277 105 54 - -
303 131 80 28 -
329 157 106 54 -
354 182 131 79 29
380 208 157 105 55
406 234 183 131 81
431 259 208 156 106
457 285 234 182 132
483 311 260 208 158
508 366 285 233 183
534 362 311 259 209
560 388 337 285 235
586 414 363 311 261
Length Stroke
1104 1108 1112 1116
611 439 388 336 286
637 465 414 362 312
663 491 440 388 338
688 516 465 413 363
714 542 491 439 389
740 568 517 465 415
765 593 542 490 440
791 619 568 516 466
817 645 594 542 492
843 671 620 568 518
868 696 645 593 543
894 722 671 619 569
920 748 697 645 595
945 773 722 670 620
971 799 748 696 646
997 825 774 722 672
OUTLINE DRAWINGS
STROKE TABLES
MODELS SM1104-1116
SERVOTUBE MODULE
Dunkermotoren Linear Systems Limited
Wollaston Way • Basildon • Essex • SS13 1DJ • UK
www.dunkermotoren.com • Phone [phone] • Fax [phone]
DS01101/B
© 07/2011
Page 4
OUTLINE DRAWINGS
(STROKE)
2.5
EACH END
2
(RUBBER BUMPER)
FORCER LENGTH (STROKE)
2
(RUBBER BUFFER)
A
A
STANDARD SYSTEM LENGTH (200mm MIN TO 997mm MAX)
510.5
NOM.
22
22
64
(ADJUSTABLE
ROD SUPPORT)
CUSTOMER ADJUSTABLE LIMIT
SWITCHES (OPTIONAL)
[FACTORY SET FOR 5.0mm FROM
END OF STROKE]
LIMIT SWITCH ACTUATOR
(OPTIONAL)
STANDARD THRUST
ROD SUPPORT
(ADJUSTABLE THRUST
ROD SUPPORT OVER
508mm SYSTEM LENGTH)
SHW LM BEARING RAIL
DRAG CHAIN FOR
CABLE ROUTING
(LARGER SIZE OPTIONAL)
STB11xx FORCER
11 MAGNETIC THRUST ROD
(NOT LOAD BEARING)
RENISHAW RGH24
LINEAR ENCODER (OPTIONAL)
[DATUM ACTUATION AT
20.0mm FROM END OF STROKE]
ENCODER STRIP
(OPTIONAL)
ENCODER
REFERENCE MARK
(OPTIONAL)
SYSTEM CLAMPS
(MOUNTED NOT LESS
THAN 100mm APART)
EACH SIDE, IF REQUIRED
40
38
46
60
52
71
109
28
43
= 35 =
70
±0.5
(SYSTEM CLAMP CENTRES)
56
B
C
SECTION A-A
SCALE 1 : 1.25
321
5
8
3
5
6
DETAIL B
SCALE 2 : 1
10
6
9
4 1
DETAIL C
SCALE 2 : 1
EXTRUDED SLOTS TO SUIT
M4 SQUARE NUTS
EXTRUDED SLOTS TO SUIT
M4 T-NUTS
CABLES:
7.6 POWER CABLE 1.
5.8 SENSOR CABLE 2.
4.5 ENCODER CABLE (OPTIONAL) 3.
SYSTEM LENGTH ( 0.5mm) = STROKE REQUIRED + FORCER LENGTH + 44.0mm (THRUST ROD SUPPORTS) + 4.0mm (RUBBER BUFFERS / BUMPER)
(FOR LARGER DRAG CHAIN
SEE OPTION 3)
FORCER LENGTH (mm) WITH BUFFERS APPROXIMATE MODULE MASS (kg)
1104 123.7 127.7 0.661 + (0.003251 x System Length In mm)
1108 174.9 178.9 0.758 + (0.003251 x System Length In mm)
1112 226.1 230.1 0.958 + (0.003251 x System Length In mm)
1116 277.0 281.0 1.086 + (0.003251 x System Length In mm)
Length
Stroke
1104 1108 1112 1116
200 28 - - -
226 54 - - -
251 79 28 - -
277 105 54 - -
303 131 80 28 -
329 157 106 54 -
354 182 131 79 29
380 208 157 105 55
406 234 183 131 81
431 259 208 156 106
457 285 234 182 132
483 311 260 208 158
508 336 285 233 183
534 362 311 259 209
560 388 337 285 235
586 414 363 3 11 261
Length
Stroke
1104 1108 1112 1116
611 439 388 336 286
637 465 414 362 312
663 491 440 388 338
688 516 465 413 363
714 542 491 439 389
740 568 517 465 415
765 593 542 490 440
791 619 568 516 466
817 645 594 542 492
843 671 620 568 518
868 696 645 593 543
894 722 671 619 569
920 748 697 645 595
945 773 722 670 620
971 799 748 696 646
997 825 774 722 672
59
45
56
71

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Electrical
Connections to the forcer are made via a 15-way high density D-sub male connector which is tted to the forcer. The
pin-outs are shown in the diagram below and the pin functions shown in the table.
PIN NUMBER FUNCTION
1 +SIN
2 -SIN
3 +COS
4 -COS
5 +5Vd.c.
6 0V
7 +TH (Thermistor)
8 -TH (Thermistor)
9 Factory use only
10 Factory use only
11 No connection
12 Earth (forcer body)
13 Forcer phase U
14 Forcer phase V
15 Forcer phase W
Connector
body
SCREEN
Cable assembly
The ServoTube Module has a cable assembly that comprises power and sensor cables with a 15-way high density
D-sub female connector for direct connection to the male connector on the forcer. The cables are available in
3 metre and 5 metre lengths.
The cables are suitable for continuous ex or drag chain applications.
OPTION R SPECIFICATION POWER SENSOR
Overall diameter (nominal) 4.7mm 5.8mm
Outer jacket material PUR PUR
Number of conductors 4 4 x twisted pair
Size of conductors 0.34mm2(22 AWG) 0.14mm2(26 AWG)
Screened / Unscreened Screened Screened
Minimum bending radius - exible
routing
36mm 44mm
Operating temperature - exible
routing
-40oC to +90oC -40oC to +90oC
Operating temperature - xed
routing
-50oC to +90oC -50oC to +90oC

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Cable terminations
The ServoTube Module cable is available with two termination options. Option F has the wire ends stripped and
solder tinned ready for termination. Option C is terminated with connectors that plug directly into a Copley Accelnet
Micro Panel amplier (ACJ-S). The connections for both options are shown in the table below.
SENSOR FUNCTION F-FLYING
LEADS
C-ACCELNET
MICRO PANEL
+SIN Blue 8
-SIN Red 1
+COS White 9
-COS Brown 2
+5Vd.c. Yellow 4
0V Green 11
+TH (Thermistor) Pink 7
-TH (Thermistor) Grey 6
SCREEN SCREEN 14
Connector type - Samtec IPD1-07-D
Amplier connection -J4
POWER FUNCTION
Forcer phase U Yellow 4
Forcer phase V White 3
Forcer phase W Brown 2
Earth (forcer body) Green 1
SCREEN SCREEN 1
Connector type - Molex 39-01-4051
Amplier connection -J2
LIMIT SWITCHES
WARNING. These limit switches are not intended as safety devices or as part of a system
intended to ensure personal safety. When two switches are mounted in close proximity (as
in the case of a left and right limit switch), a minimum of 30mm spacing between sense areas
must be maintained.
If ordered, the ServoTube Module can be supplied with two limit switches tted. There are two types available, NPN
output and PNP output. Each output type is available with 5 metres of cable suitable for continuous exing. Each
limit switch position is adjustable and switching is achieved by an actuator vane mounted on the forcer. Electrical
connections are made via wire ends stripped and solder tinned ready for termination.
SPECIFICATION VALUE
minimum typical maximum units
Supply voltage 10 24 30 Vd.c.
Supply current - 15 - mA
Sink current - - 100 mA
“Closed” voltage - - 1 Vd.c.
Frequency response - - 600 Hz
The output for all types can be normally closed (NC) or normally open (NO) open collector transistor. The NC ouptuts
switch open when a limit is detected and current stops owing in the LOAD. The NO outputs switch closed when a
limit is detected and current starts owing in the LOAD.
A red indicator shows the output status.

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OVER-TEMPERATURE SENSOR
CAUTION. It is strongly recommended that the forcer over-temperature sensor is connected to
the drive amplier or servo controller at all times in order to reduce the risk of damage to the
forcer due to excessive temperatures.
OPTIONAL ENCODER
If an additional encoder (Renishaw) has been supplied, there will be a third cable to connect to the amplier. The
Renishaw encoder cable is terminated in 9-pin D-type plug. An adaptor cable is supplied to allow the sensor to
connect to the amplier at connector J5.
CONNECTING TO AN AMPLIFIER
Connection details to the Accelnet Micro Panel Amplier are shown in the diagram below.
TO J4
TO J5
TO J2
POWER CABLE
OPTIONAL
ENCODER CABLE
SENSOR CABLE
ACCELNET
MICRO PANEL
J2
J5
J4
Black (LOAD)
Blue (0V)
NPN
Brown (+V)
Black (LOAD)
Blue (0V)
PNP
LOAD
Brown (+V)
LOAD

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Chapter 3
Maintenance
WARNING
ISOLATE AND DISCONNECT ALL SOURCES OF ELECTRICAL SUPPLY BEFORE WORKING ON
THE EQUIPMENT.
PREVENTATIVE MAINTENANCE
BEARING SYSTEM
The ServoTube 11 modules are supplied as complete, ready to use mechanical systems. Each system incorporates
a prole rail re-circulating ball bearing system for support and guidance. The bearing carriages, to which the
moving forcer is attached, are fully charged with grease before delivery. This grease will last for the life of the
bearing system and there are no means to regrease the bearing carriages.
THRUST ROD
The thrust rod must be kept clean and central to the forcer bore to avoid damage to the windings inside the forcer.
Check that the thrust rod is centrally aligned by moving the forcer along the entire length of the thrust rod and
observing the gap between the thrust rod and forcer bore.
If the thrust rod is becoming polished in places, this is usually an indication that the forcer is coming into contact
with the thrust rod. Check the surface of the thrust rod for any raised areas that may damage the inside lining of
the forcer. A soft cloth can be used to clean the thrust rod and self adhesive tape can be used to lift o󰀨 any ferrous
debris that may be attracted to it.
FORCER
Forcers have a uoropolymer inner lining that does not require maintenance. However, when carrying out checks,
a visual inspection should be made to ensure there is nothing trapped in the ends of the forcer.
CABLES
Check that all connecting cables are secured and not under strain. Inspect cables for signs of wear.
ENCODER (WHERE FITTED)
The encoder scale should be cleaned with a soft, lint free cloth to remove any oil, grease or dirt. Under no
circumstances must solvents be used on optical encoder scales as the protective lacquer coating may become
damaged.

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CORRECTIVE MAINTENANCE
The corrective maintenance by the user is limited to the following items:
• Power and Sensor cable assembly
• Thrust rod
• Forcer
• Encoder readhead (integral cable)
CABLES
If a power or sensor cable needs to be replaced, it will be necessary to change the complete cable assembly.
Note. It is not possible to replace an encoder cable. If an encoder cable needs replacing, the complete encoder
assembly will have to be replaced. See ENCODER READHEAD on page 22 in this chapter.
CAUTION. If the optional Renishaw encoder is tted, it has an integral cable
that also runs through the drag chain. Take care not to damage this item when
releasing the other cables.
Removal
• Disconnect the cable assembly from the Accelnet Micro Panel Amplier, if connected.
• Unclip the covers of all links in the drag chain. These are shown coloured green in Figure3.1.
Link covers
identified by
green highlight
Figure 3.1
• They can be removed as a single item by progressively pulling up the tongue of the rst cover until all are
unclipped, see Figure 3.2.
Link covers
removed
Figure 3.2

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• Remove any cable ties that have been used to hold the cables in position.
• Release the D-type connector retaining clip as shown in Figure 3.3 and Figure 3.4
1. Connector
retaining clip
2. Release from
hook here
Figure 3.3
Figure 3.4
• Unplug the connector and remove the cable assembly from the module.
• Remove the cable assembly from the drag chain.
Replacement
Re-tting the cable assembly is the reverse of the removal procedure.
• Plug in the replacement cable15-way D-type plug into the connector on the forcer and engage the connector
retaining clip as shown in Figure 3.3.
• Place the cable assembly inside the drag chain.
• Fit new cable ties to secure the cables as originally tted.
• Re-clip the drag-chain covers that were previously unclipped.
• Reconnect the cable assembly to the Accelnet Micro Panel Amplier.

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THRUST ROD
One of two types of thrust rod end supports are tted to the module. If the thrust rod end supports
tted are as shown right, it is not recommended that thrust rod replacement is attempted. In this
case the complete module must be returned to the supplier for replacement to be carried out. For
the type of thrust rod support shown in Figure 3.5, carry out the following procedure.
Removal
• Move the forcer to the centre of the module, Figure 3.5.
Forcer
position forcer to
centre of module
Figure 3.5
• Place spacers around or under the thrust rod to prevent it coming into contact with the bearing rail or other
ferrous material. Foam pipe insulation or wooden blocks are ideal for this.
• Loosen the two M4 bolts on each of the thrust rod end supports, see Figure 3.6.
WARNING. If people with Pacemaker work with this equipment, the Pacemaker could interfere or fail.
» People with Pacemakers or metal implants must not handle or work with the thrust rod
CAUTION. Thrust Rod contains powerful magnetic components and must be handled with care. If you do
not follow the instructions below, it may cause personal injury, such as bruises, up to amputation of limbs
(e.g. ngers).
» Only handle one rod at a time
» Never remove safety sleeving if not absolutely necessary, and handle/transport the thrust rods
in the original packaging
» Never use thrust rod, if it appears damaged
CAUTION. The linear modules can be particularly heavy and can not be lifted alone.
» Lift linear modules always together with another person
NOTICE. The magnetic eld from the thrust rod can damage magnetic media and credit cards when in
close proximity.
» Keep away any magnetic media and credit cards from the thrust rod

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• Carefully slide the thrust rod out through the thrust rod supports and forcer (Figure 3.13) until it is clear of the
module assembly, see Figure 3.7.
• Store the thrust rod in a safe place away from ferrous material.
Figure 3.7
Replacement
• Carefully slide the replacement thrust rod in through the rst thrust rod support. Place spacers around or under
the thrust rod as soon as it passes through the thrust rod support.
• Continue to slide the thrust rod to pass through the forcer and into the other thrust rod support.
• When it is correctly positioned, tighten the M4 xings in each of the thrust rod supports to a torque of 2 Nm.
Thrust rod
Loosen
Loosen
Thrust rod support
Thrust rod support
Carefully slide thrust
rod out of support
Figure 3.6

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FORCER
When the forcer is removed from the module, it will have the following items attached that will need to be transferred
to the replacement forcer.
• Bearing carriage(s). There will be 1 or 2 bearing carriages depending on the particular version.
• The encoder readhead bracket tted with the encoder readhead.
• The limit switch actuator if tted.
• The drag chain upper mounting bracket.
Removal
• Remove the thrust rod as described on page 18.
• If the Renishaw encoder is tted, follow the procedure for cable removal described on page 16 and free the
cables in the drag chain and carefully withdraw the encoder cable from drag chain.
• Remove the drag chain link that secures the drag chain to the drag chain upper mounting bracket which is
tted to the forcer.
• Unplug the power /sensor cable assembly from the forcer as described on page 17.
The removal of the forcer requires a thrust rod support to be removed.
• Undo and remove the four M5 xings securing one of the thrust rod supports to the backing bar and slide the
thrust rod support out of the backing bar, see Figure 3.8.
• Remove the forcer by sliding it o󰀨 the bearing rail, Figure 3.9. Take care to keep the forcer square to the
bearing rail so that balls are not lost from the re-circulating bearing carriage. If balls do fall out they can be re-
inserted into the carriage. Push the ball bearings using a small screwdriver into the end of the re-circulating
path at the plastic end plates on the carriage.
Thrust rod support
Remove these four screws and the thrust rod support
Forcer
Bearing rail
Backing bar
Figure 3.8

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Preparation of replacement forcer
Refer to Figure 3.10. Transfer the following items from the removed forcer to the replacement forcer:
• The bearing carriage. Align the bearing carriage to be 0.5 mm below and parallel to the edge of the forcer.
• The encoder readhead bracket tted with the encoder readhead (optional items).
• The limit switch ag (optional).
• The drag chain upper mounting bracket.
Drag chain upper mounting bracket
Encoder readhead
Bearing carriage
Limit switch flag Datum edge
Power/sensor connector
Forcer
Encoder readhead bracket
Figure 3.10
Forcer
Move the forcer off the
end of the bearing rail
Figure 3.9

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Replacement
• Slide the newly assembled forcer on to the bearing rail taking care to keep the forcer square to the bearing
rail so that balls are not lost from the re-circulating bearing carriage(s). If balls do fall out they can be re-
inserted into the carriages. Push the ball bearings using a small screwdriver into the end of the re-circulating
path at the plastic end plates on the carriage.
• Ret the thrust rod support to the end of the backing bar and secure using the four M5 xings tightened to a
torque of 5 Nm.
• Replace the thrust rod as described on page 19.
• Place the encoder cable (if tted) in the drag chain.
• Reconnect the power/sensor connector to the forcer connector and clip to secure.
• Reconnect the drag chain link previously removed from the drag chain upper mounting bracket.
• Ret the drag chain covers.
ENCODER READHEAD (Optional item)
Before commencing any work, it is important to note that the encoder may require alignment to achieve optimum
performance after replacement.
Removal
• Undo the two M3 x 14 xings to remove the encoder readhead with integral cable.
Replacement
• Ret the replacement encoder readhead to the encoder bracket using the two M3 x 14 xings and tighten to a
torque of 0.7 Nm.
Alignment
The encoder may need aligning. To check:
• Connect the encoder to the control system and apply power to the encoder only.
• Move the forcer along the entire length of the module and check that the LED indicator on the back of the
readhead lights up green. It will light up red as it passes over the reference mark. If this does not happen,
alignment is necessary.
• Loosen the two M3 x 14 xings securing encoder to the encoder bracket.
Note. The xings should be loosened just enough to allow movement of the encoder.
• Using a thin piece of rigid plastic (100mm x 20mm x 1mm), adjust the encoder readhead by sliding the plastic
between the backing bar and forcer. Push the readhead until the LED on the back of the readhead lights up
green.
• Move the forcer along the entire length of the module and check that the LED indicator on the back of the
readhead lights up green. It will light up red as it passes over the reference mark.
• Tighten the two M3 x 14 xings that secure the encoder to the encoder bracket and tighten each to a torque
of 0.7 Nm.
BEARING REPLACEMENT
Should excessive play be detected in the bearing system the bearing will need replacing. It is recommended that
the bearing carriage and the bearing rail are replaced at the same time.
Due to the complex nature of the process and specialist equipment required, please contact your supplier regarding
replacement.

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Chapter 4
Service
SERVICE
Should you need to return any items to Dunkermotoren, before doing so, please call our Sales coordinator in order
to obtain an RMA (Returned Materials Authorisation) number. The RMA number should then be quoted on all items
returned and quoted for all enquiries.
Please note that when returning items it is recommended that the original packaging be used.
ACCESSORIES AND SPARES
The Accessories and Spares for the modules are listed in Tables 4.1 and Table 4.2.
Table 4.1 Accessories
Description Order Code
Mounting Hardware
M4 T Nut (10 o󰀨 pack) 91500.00088
Table 4.2 Spares
Description Length
Renishaw readhead replacements
1 µm readhead 3 metre cable
1 µm readhead 5 metre cable
Limit Switches
NPN Robotic Switch, NC 5 metre robotic cable
PNP Robotic Switch, NC 5 metre robotic cable
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