Hubner FGH 6 Product guide

English
Operating and Assembly Instructions
Incremental Hollow Shaft Encoder FGH 6
Read the operating and assembly instructions prior to
assembly, starting installation and handling!
Keep for future reference!
Translation of the original Operating and Assembly Instructions FGH6_MANUAL-en_R12(2018-11-05)ID73487.docx
ID 74515

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Incremental Hollow Shaft Encoder FGH 6
Trademark
Brand names and product names are trademarks or registered trademarks of their respective owner.
Protected trademarks bearing a ™or ® symbol are not always depicted as such in the manual.
However, the statutory rights of the respective owners remain unaffected.
Manufacturer / publisher
JohannesHubner
Fabrik elektrischer Maschinen GmbH
Siemensstraße 7
35394Giessen
Germany
Phone: [phone]
Fax: [phone]
E-Mail: [e-mail]
Internet: www.huebner-giessen.com
The manual has been drawn up with the utmost care and attention. Nevertheless, we cannot exclude
the possibility of errors in form and content. It is strictly forbidden to reproduce this publication or parts
of this publication in any form or by any means without the prior written permission of Johannes
Hubner Fabrik elektrischer Maschinen GmbH.
Subject to errors and changes due to technical improvements.
Copyright © Johannes Hubner Fabrik elektrischer Maschinen GmbH.
All rights reserved.

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Incremental Hollow Shaft Encoder FGH 6
Table of contents
1 General .............................................................................................................................5
1.1 Information about the operating and assembly instructions ....................................................... 5
1.2 Scope of delivery ........................................................................................................................ 5
1.3 Explanation of symbols............................................................................................................... 5
1.4 Disclaimer................................................................................................................................... 6
1.5 Copyright..................................................................................................................................... 6
1.6 Guarantee terms......................................................................................................................... 6
1.7 Customer service........................................................................................................................ 6
2 Safety................................................................................................................................6
2.1 Responsibility of the owner......................................................................................................... 6
2.2 Intended use............................................................................................................................... 6
2.3 Non- intended use....................................................................................................................... 7
2.4 Personal protective equipment................................................................................................... 7
2.5 Personnel.................................................................................................................................... 7
2.6 Special dangers.......................................................................................................................... 7
2.6.1 Electrical current ................................................................................................................. 7
2.6.2 Rotating shafts .................................................................................................................... 7
2.6.3 Safeguarding against restart ............................................................................................... 7
3 Technical Data..................................................................................................................8
3.1 Type plate................................................................................................................................... 8
3.2 Electrical and mechanical data................................................................................................... 9
3.3 Type code................................................................................................................................. 11
4 Transport, packaging and storage................................................................................12
4.1 Safety instructions for transport................................................................................................ 12
4.2 Incoming goods inspection ....................................................................................................... 12
4.3 Packaging / (disposal)............................................................................................................... 12
4.4 Storage of packages (devices)................................................................................................. 12
5 Installation and commissioning....................................................................................12
5.1 Safety instructions..................................................................................................................... 12
5.2 Mounting of the hollow shaft encoder (mechanically)............................................................... 13
5.2.1 Assembly instruction for hollow shaft devices.................................................................. 13
5.2.2 Assembly of a hollow shaft encoder FGH 6 and additionally a further encoder in
construction type B5 onto the NDE of the FGH 6 .......................................................................... 14
5.3 Connecting the hollow shaft encoder........................................................................................ 15
5.3.1 Connections ...................................................................................................................... 15
5.3.2 Connection with integrated EGS® 4 technology in the second terminal box (option S)... 15
5.3.3 Technical notes ................................................................................................................. 16
6 Disassembly...................................................................................................................16
6.1 Safety instructions..................................................................................................................... 16
6.2 Disassembly of the encoder ..................................................................................................... 16
7 Faults..............................................................................................................................17

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7.1 Faults table ............................................................................................................................... 17
8 Testing............................................................................................................................18
8.1 Safety instructions..................................................................................................................... 18
8.2 Maintenance information .......................................................................................................... 18
8.3 Quality control plan................................................................................................................... 18
9 Disposal..........................................................................................................................18
9.1 Disposal procedure................................................................................................................... 18
10Dimension drawings......................................................................................................22
11Connection Diagrams....................................................................................................35
12Mounting instructions for coupling ..............................................................................37

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Incremental Hollow Shaft Encoder FGH 6
1 General
1.1 Information about the operating and assembly instructions
This operating manual provides important instructions for working with the device. It must be carefully
read prior to starting all tasks, and the instructions contained herein must be followed.
In addition, applicable local regulations for the prevention of industrial accidents and general safety
regulations must be complied with.
1.2 Scope of delivery
Incremental Hollow Shaft Encoder FGH 6, operating and assembly instructions.
1.3 Explanation of symbols
Warnings are indicated by symbols in this operating manual. The warnings are introduced by signal
words that express the scope of the hazard.
The warnings must be strictly heeded; you must act prudently to prevent accidents, personal injury, and
propertydamage.
WARNING!
Indicates a possible dangerous situation that can result in death or serious injury if it
is not avoided.
CAUTION!
Indicates a possible dangerous situation that can result in minor injury if it is not
avoided.
CAUTION!
Indicates a possible dangerous situation that can result in material damage if it is not
avoided.
NOTES!
Indicates useful tips and recommendations as well as information for efficient and
trouble-freeoperation.
NOTES!
Mounting and disassembly by means of a hammer or similar tools is not permitted
(warrantyvoid).
DANGER!
Life threatening danger due to electric shock!
Indicates life-threatening situation due to electric shock. If the safety instructions are
not complied with there is danger of serious injury or death. The work that must be
executed should only be performed by a qualified electrician.

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1.4 Disclaimer
All information and instructions in this operating manual have been provided under due consideration of
applicable guidelines, as well as our many years of experience.
The manufacturer assumes no liability for damages due to:
 Failure to follow the instructions in the manual
 Non-intendeduse
 Deployment of untrained personnel
 Opening of the device or conversions of the device
In all other aspects the obligations agreed in the delivery contract as well as the delivery conditions of
the manufacturer apply.
1.5 Copyright
1.6 Guarantee terms
The guarantee terms are provided in the manufacturer´s terms and conditions.
1.7 Customer service
For technical information personnel are available that can be reached per telephone, fax, email, or via
the Internet, see manufacturer´s address on page 2.
2 Safety
2.1 Responsibility of the owner
The device is used in commercial applications. Consequently the owner of the device is subject to the
legal occupational safety obligations and subject to the safety, accident prevention and environmental
protection regulations that are applicable for the device´s area of implementation.
2.2 Intended use
The device has been designed and constructed exclusively for the intended use described here.
Series FGH 6 incremental hollow-shaft encoders are used for measurement of rotations, for instance of
electrical and mechanical drives and shafts.
Claims of any type due to damage arising from non-intended use are excluded; the owner bears sole
responsibilityfor non-intended use.
NOTE!
Content information, text, drawings, graphics, and other representations are protected
by copyright and are subject to commercial property rights.
It is strictly forbidden to make copies of any kind or by any means for any purpose other
than in conjunction with using the device without the prior written agreement of the
manufacturer. Any copyright infringements will be prosecuted
This section provides an overview of all the important safety aspects that ensure
protection of personnel, as well as safe and trouble-free device operation.
If these safety instructions are not complied with significant hazard can occur.

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2.3 Non- intended use
The device may not be used in explosion-threatened areas.
On the device no other mechanical load may be exercised except his dead weight and the oscillations
without fail appearing during the company and pushes.
Examples of inadmissible mechanical charges (incomplete listing):
 Connection of transport or lifting means in the device, e.g., load hook for raising of an engine.
 Connection of packaging parts in the device, e.g., instep belts, tarpaulin, etc.
 Use of the device as a step, e.g., for going up of a person on an engine.
2.4 Personal protective equipment
For tasks such as assembly, disassembly or commissioning the use of personal protective equipment
such as safety footwear and protective work clothing is required.
The regulations specified by the owner and that are locally specified apply.
2.5 Personnel
Only skilled technical staff is allowed to perform installation, mounting, disassembly and
commissioningwork.
2.6 Special dangers
Residual risks that have been determined based on a risk analysis are cited below.
2.6.1 Electrical current
2.6.2 Rotating shafts
2.6.3 Safeguarding against restart
DANGER!
Life threatening danger due to electrical shock!
There is an imminent life-threatening hazard if live parts are touched. Damage to
insulation or to specific components can pose a life-threatening hazard.
Therefore:
Immediately switch off the device and have it repaired if there is damage to the
insulation of the power supply.
De-energize the electrical equipment and ensure that all components are connected,
for all tasks on the electrical equipment.
Keep moisture away from live parts. Moisture can cause short circuits.
WARNING!
Danger of injury due to rotating shafts!
Touching rotating shafts can cause serious injuries.
Therefore:
Do not reach into moving parts/shafts or handle moving parts/shafts during operation.
Do not open covers during operation. Prior to opening the covers ensure that all parts
have come to a standstill.
DANGER!
Life-threatening danger if restarted without authorization!
When correcting faults there is danger of the power supply being switched on without
authorization.
This poses a life-threatening hazard for persons in the danger zone.
Therefore:
Prior to starting work switch off the system and safeguard it from being switched on
again.

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3 Technical Data
3.1 Type plate
Type plate example:
The type plate is located on the side of the housing and contains the following information:
 Manufacturer,address
 Type
 CE-mark
 Serial number (S/N)
 Year of construction
 Pulse rate
 Degree of protection
 Supplyvoltage

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Incremental Hollow Shaft Encoder FGH 6
3.2 Electrical and mechanical data
Pulse rates
Value
Preferred pulse rates
(nickel disks)
1024, 2000
Pulse rates available
512, 1000, 1200, 1800, 2048, 2500
Connection data
Supplyvoltage
12 …30 V DC (Option: 5 VDC)
Noload-current
approx. 100 mA at 30 V (without Option)
Outputs
Differential line-driver, resistant to sustained short-
circuit, current limited, short-circuit.
Pulse height (HTL)
approx. as supply voltage
Internalresistance
50 Ωper output
Pulse height (TTL)
5 V to RS 422
Slew rate
50 V / µs
Pulse duty factor
1 : 1 ± 5 %
Square wave displacement 0°, 90°
to 50 KHz < 3 %
to 150 KHz < 5 %
Max.frequency
0 to 100 kHz. (to 150 kHz on request)
Encoder temperature ranges
Standard
0°C …+ 70°C
Specialtemperature
-25°C …+ 85°C
Special output voltage 5V (TTL)
Pulse height
5V, RS422 compatible (TIA/EIA-Standard)
Supplyvoltage
12 …30 V DC
Protectionclass
DIN EN 60529
Sealing
Mechanical
speed
Description
Breakaway
torque
IP 54
Special seal
≤4000 rpm
Protectionagainst
dust and water
spray
approx. 30 to 50
Ncm
IP 66
only drive side
Radial shaft seal
≤1500 rpm
Protectionagainst
dust and water
spray
approx. 60 Ncm
IP 66
both sides
Radial shaft seal
≤1100 rpm
Protectionagainst
dust and water
spray
approx. 70 Ncm
Type K
Type KK
Weight
6 kg
6,8 kg

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Signal outputs
Basic version
(n = pulses/revolution).
One pulse channel (basic) with n direct square
wave pulses, corresponding to the segment
division and LED monitoring output.
Option 90
2
nd pulse channel as basic version, bit with 90°
electrical phase shift.
Option N
Marker pulse, mechanically fixed. One square
wave pulse per revolution.
Option G
Additional inverted output signals for basic and
90° channels, marker pulse puls LED check.
Option F
With 2 or 4 times as many pulses as basic
version, No direction of motion can be derived
from the multiple number of pulses.
Required: option 90°
Option B
Fast and precise sensing of rotational direction
at each edge of the basic and 90° channels.
Required: option 90°.
Output
Option B2
As option B, but with standstill sensing.
Option V
Electronic pulse doubling of basic and 90°
channels bymultiple evaluation.
Option L2
Power output up to 150 mA for basic channel,
90° channel and the corresponding inverted
signals.
Option J
Reduced rotational frequency modulation by
means of optically adjusted pulse disk.
Option S
Electronic overspeed switch with 2 programmable
switching outputs, EGS4 version
(see operating and assembly instructions EGS 4)
L
R
cw
0
1
Option
B, B2
ccw
1
0
Still stand
0
0
Option B2

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3.3 Type code
90 G /50P
Incremental
Hollow Shaft Encoder
Syntheticbushing
Series
Connection
K: Terminal box
S: Industrial plug
R: 12 pole. round plug
C: 2 m connection cable
L: fiber optics- technic
2x connection = redundant Encoder
or Encoder with Option S
e.G.. KK = 2 terminal boxes
Pulses per revolution
Basic signal output
Basic channel 0° (A)
Pulse channel 90° (B)
Each with inverted signals
Reference pulse with
inverted signal
2 F: Option 2F
4 F: Option 4F
B: Option B
B2: Option B2
S: Option S EGS
®
4 Technic 2nd terminal box
L2: Option L2
V: Option V
J: Option J can be combined with V
Drive shaft connection
P: keyway
S: pressure sleeve
C: taper

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4 Transport, packaging and storage
4.1 Safety instructions for transport
4.2 Incoming goods inspection
Check delivery immediately upon receipt for completeness and possible transport damage.
Inform theforwarder directly onreceipt of the goods about existing transport damages (prepare pictures
for evidence).
4.3 Packaging / (disposal)
The packaging is not taken back and must be disposed of in accordance with the respective statutory
regulations and local guidelines.
4.4 Storage of packages (devices)
If stored for longer periods (> 6 months) we recommend sealing the devices in foil, possibly with a
desiccant.
5 Installation and commissioning
5.1 Safety instructions
Personnel
Installation and commissioning must be carried out by skilled technical staff only.
CAUTION!
Improper transport can cause property damage!
Protect from moisture
Keep packed goods dry and protected against moisture.
Protect from heat
Protect packaged goods from heat over 40°C and direct sunlight.
Attention:
Turn encoder shafts every 6 months 10 times to prevent a possible hardening of the
grease-filling of the ball bearings, which may lead to the destruction of the device.
It is essential to observe safety instructions of chapter 2 before starting any tasks
(installation/testing) on the device.

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5.2 Mounting of the hollow shaft encoder (mechanically)
Mounting and disassembly by means of a hammer or similar tools is not permitted (warranty void).
5.2.1 Assembly instruction for hollow shaft devices
1. Mount the adapter flange and align precisely with dial gauge; if necessary optimize the alignment
with ball pressure adjusting screws.
2. Secure the ball pressure screws with Loctite. Remove pressure screws that are not used, or
likewise secure them with a thread-lock lacquer. Max. tightening torque for M12 approximately 25
Nm; for M16 approximately 35 Nm.
The hollow shafts have tapped holes on both sides at the front. For removal use screws to attach the
mounting sleeve (Fig. 1), and the use a puller to draw off the unit. A suitable mounting sleeve is
recommended for each plant area (specify on ordering).
Remove hollow shaft encoders using mounting sleeve only.
3. Use feather keys in accordance with DIN 6885.
4. Mount the torque bracket/torque arm on the housing.
5. Check the mounting position relative to the terminal box, adjust if necessary.
6. Push the device onto the shaft that has been lightly greased.
Fig. 1 Fig. 5
1
Fig. 2
NOTE!
The radial deviation of the shaft (Fig. 2 Pos. 1) should not exceed 0,05 mm.
NOTE!
Comply with the information provided in the supplemental data sheet entitled
“Mounting Accuracy of hollow shaft encoders”.
CAUTION!
Danger of damage to shaft and hollow shaft encoder if improperly handled.
Ensure that there are no hard impacts on hollow shaft and housing.
Use the mounting sleeve.

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7. Secure the device with axial tightening plate and 4x M5 x 16-DIN 912 fastening screws.
8. Fastening Axial tightening disc with 4x M4 x 20-DIN 912 fastening screws on the adapter shaft.
9. Tighten the fastening screws on the link head of the torque bracket. Fix the nuts in place with
locknuts.
10. Check the attached torque brackets: The link rod must be easy to turn within the link head, and the
link heads should not tilt. If this instruction is not followed there is a danger of bearing damage.
11. Connect the cabling in the terminal box ( see chapter 12, connection diagrams).
5.2.2 Assembly of a hollow shaft encoder FGH 6 and additionally a further encoder in
construction type B5 onto the NDE of the FGH 6
Assembly with metal bellows coupling:
1. Mount the adapter shaft onto the motor shaft.
2. Put the coupling (metal bellows coupling) on adapter shaft extension and fix the encoder with
a set screw.
3. Put the hollow shaft encoder FGH 6 onto the shaft that has been lightly greased and fix with
suitable axial tightening disc and screw. Details see chapter 5.2.1.
4. Put the to be coupled encoder onto the B14 flange of the hollow shaft encoder FGH 6.
Put the shaft carefully in the coupling bore. (Attention: The bore in the B 14 flange must show in
the direction of the set screw). Slide the rear encoder up to the mechanical stop and tighten it
with suitable screws.
Tighten the rear set screw of the coupling through the access of the B14 flange.
Then close the access with a lock screw.
See dimension drawing HM 14 M 108191.

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5.3 Connecting the hollow shaft encoder
5.3.1 Connections
Cable glands are closed with a stopper to protect the devices on transport and storage.
Cableconnections:
Have to be executed according to the encoder type.
Connection diagrams have to be considered!
Useof connectioncables withdiameterofmin.14mm–max.15mmis essentialtoensuretheprotection
class. Cable outlet should show preferably downwards.
5.3.2 Connection with integrated EGS® 4 technology in the second terminal box (option S)
The connections for the EGS® 4 technology are accommodated in the second terminal box of the hollow
shaft encoder.
Wiring arrangement and shielding:
(EMCmeasurement)
The cable shielding must be connected on both sides.
The shield of the signal cable is directly connected to the housing of the encoder by the cable gland.
The common guidelines for EMI concerned cable routing have to be considered!
Sample Figure
Closing the terminal box cover
Check the seal of the terminal box cover, clean it if soiled. Then duly close the cover.
Importantinstruction
For the function of the hollow shaft encoder, the voltage supply for the EGS® 4
technology in the second terminal box is also to be connected.
Captive fastening
screws
Terminal box
Print-wedges with
operating whip
Terminal boxes seal
Cable gland with
plastic pins
Importantinstruction
The encoder can only be connected bycompetent persons.
Cable must not be pinched
Attention with open terminal boxes.
Moisture should not get into the terminal box when connecting the cable.

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Incremental Hollow Shaft Encoder FGH 6
5.3.3 Technical notes
Ambienttemperature
The max. perm. ambient temperature depends on speed and protection class (shaft sealing) of the
encoder as well as on frequency, signal cable length and mounting situation. See chapter 3.2
Protection class
To comply with the protection class the signal cable diameter must be appropriate to the cable gland!
See chapter 5.3.1
6 Disassembly
6.1 Safety instructions
6.2 Disassembly of the encoder
Disassembly of the hollow shaft encoder has to be done in reverse sequence to chapter 5.2.
Personnel
Only trained, specialized personnel should perform any disassembly.
Attention: Observe safety instructions in chapter 2 before starting any tasks.
(Installation/maintenance/disassembly)

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Incremental Hollow Shaft Encoder FGH 6
7 Faults
7.1 Faults table
Faults
Possible cause
Remedy
Moisture in the terminal box
Soiled terminal box gasket or
sealsurfaces
Clean terminal box gasket and
sealsurfaces
Damaged terminal box gasket
Replace terminal box gasket
Cable gland/blanking plug not
tightened
Tighten cable gland/blanking
plug
Unsuitable cable for cable gland
Use suitable cable and cable
glands
No output signals
Supply voltage not connected
Connect supply voltage
Connection cable reversed
Wirecorrectly
Output signals subject to
interference
Unsuitablecable
Use data cable with conductors
arranged as twisted pairs and
common shield
Cable shield not connected
Connect cable shield at both
ends
Cable routing not EMC
compliant
Observe applicable EMC
guidelines when routing cables
Signalinterruptions
Signal end stage overloaded
Check pin assignment; observe
connectiondiagram
Do not assign unused outputs
Outputsshort-circuited
Do not connect outputs with
supply voltage or GND
No function at hollow shaft
encoders with EGS® 4
technology in the second
terminal box (option S)
Supply voltage for the EGS® 4
technology not connected in the
second terminal box.
Connect the power supply for
the EGS® 4 technology in the
second terminal box.
Contact Hübner-Service (page 2) if none of the remedies listed above provides a solution)!

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Incremental Hollow Shaft Encoder FGH 6
8 Testing
8.1 Safety instructions
8.2 Maintenance information
The device is maintenance free. However the following tests are recommended to ensure optimal,
problem free operation.
8.3 Quality control plan
Interval
Inspections
Yearly
Inspect the coupling for damage and ensure it is free of play
Ensure the fastening screws are properly tightened
Ensure cable connections and connection terminals are
securelyseated
Following approx 16 000 …20
000 hours of operation / higher
levels of continuous load
Check deep groove ball bearings are running smoothly and
listen for running noises
9 Disposal
9.1 Disposal procedure
The manufacturer is not obliged to take back electronics waste. The device consists of hybrid
components, and in part must be disposed of as special waste (electronic scrap) according to country-
specificlegislation.
Local municipal authorities or specialized disposal companies provide information on environmentally
responsibledisposal.
Personnel
Skilled technical staff only are permitted to inspect the device and its installation.
Observe the safety instructions contained in chapter 2 when inspecting or working on
the device.

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Incremental Hollow Shaft Encoder FGH 6
11 Dimension drawings
Special dimension drawings on request or see Internet.
FGH 6 KK…/50P/B14
KK Redundant version with
B14 flange
HM 14 M 107720

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Incremental Hollow Shaft Encoder FGH 6
FGH 6 KK…/50P KK redundant version HM 14 M 107722